Merge branch 'repackage' of github.com:sfilippone/amg4psblas into repackage

This reverts commit a17f503486.

.gitignore

@@ -12,11 +12,13 @@ config.log
 config.status
 
 # generated folder
-include/
-modules/
-docs/src/tmp
+/include/
+/modules/
+/docs/src/tmp
 autom4te.cache
 
 # the executable from tests
 runs
 
+# Documentation temporary files
+docs/src/userguide.pdf

Changelog

@@ -1,5 +1,6 @@
 Changelog. A lot less detailed than usual, at least for past
 	history.
+2022/05/20: Restart ChangeLog. Updated to new name AMG4PSBLAS, now using PSB3.8	
 2018/10/28: Fix interface to MUMPS and configry machinery. Require PSB 3.6.
 2018/10/10: ICTXT argument in prec%init().	
 2018/07/30: Fixes for Intel compilers. BootCMatch interface in examples. 	

LICENSE

@@ -1,10 +1,10 @@
   
    
-                             AMG4PSBLAS version 1.0
+                             AMG4PSBLAS version 1.1
     Algebraic Multigrid Package
-               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+               based on PSBLAS (Parallel Sparse BLAS version 3.8)
     
-    (C) Copyright 2021
+    (C) Copyright 2022
   
         Salvatore Filippone  
         Pasqua D'Ambra   

Make.inc.in

@@ -75,7 +75,7 @@ CDEFINES=$(AMGCDEFINES)
 AMGFDEFINES=@AMGFDEFINES@ $(PSBFDEFINES)
 FDEFINES=$(AMGFDEFINES)
 
-CXXDEFINES=@AMGCXXDEFINES@
+CXXDEFINES=@AMGCXXDEFINES@ $(PSBCXXDEFINES)
 
 @COMPILERULES@
 

Make_n.inc.in

@@ -49,7 +49,7 @@ PSBLAS_INCLUDES=@PSBLAS_INCLUDES@
 PSBLAS_LIBS=@PSBLAS_LIBS@	
 PSBBASEMODNAME=psb_base_mod
 PSBPRECMODNAME=psb_prec_mod
-PSBMETHDMODNAME=psb_krylov_mod
+PSBMETHDMODNAME=psb_linsolve_mod
 PSBUTILMODNAME=psb_util_mod
 
 

Makefile

@@ -1,10 +1,13 @@
 include Make.inc
 
 
-all:  library 
+all:  objs lib
 
-library: libdir amgp cbnd
-#cbnd
+objs: libdir amgp cbnd
+
+lib:  objs
+	cd amgprec && $(MAKE) lib
+	cd cbind && $(MAKE)  lib
 
 libdir:
 	(if test ! -d lib ; then mkdir lib; fi)
@@ -14,10 +17,11 @@ libdir:
         
 
 amgp:
-	$(MAKE) -C amgprec all
+	cd amgprec && $(MAKE) objs
 cbnd: amgp
-	$(MAKE) -C cbind all
-install: all
+	cd cbind && $(MAKE)  objs
+
+install: lib
 	mkdir -p $(INSTALL_LIBDIR) &&\
 	   $(INSTALL_DATA) lib/*.a  $(INSTALL_LIBDIR)
 	mkdir -p  $(INSTALL_INCLUDEDIR) &&\
@@ -41,14 +45,16 @@ cleanlib:
 	(cd modules; /bin/rm -f *.a *$(.mod) *$(.fh))
 
 veryclean: cleanlib
-	(cd amgprec; make veryclean)
-	(cd samples/simple/fileread; make clean)
-	(cd samples/simple/pdegen; make clean)
-	(cd samples/advanced/fileread; make clean)
-	(cd samples/advanced/pdegen; make clean)
+	(cd amgprec && $(MAKE) veryclean)
+	(cd cbind && $(MAKE) veryclean)
+	(cd samples/simple/fileread && $(MAKE) clean)
+	(cd samples/simple/pdegen && $(MAKE) clean)
+	(cd samples/advanced/fileread && $(MAKE) clean)
+	(cd samples/advanced/pdegen && $(MAKE) clean)
 
 check: all
 	make check -C samples/advanced/pdegen
 
 clean:
-	(cd amgprec; make clean)
+	(cd amgprec && $(MAKE) clean)
+	(cd cbind && $(MAKE) clean)

README.md

@@ -1,55 +1,76 @@
+# AMG4PSBLAS  v1.2
+Algebraic Multigrid Package  based on [PSBLAS](https://github.com/sfilippone/psblas3) (Parallel Sparse BLAS version 3.9)
 
-                         AMG4PSBLAS  
- Algebraic Multigrid Package  based on PSBLAS (Parallel Sparse BLAS version 3.7)
-    
-Salvatore Filippone    (University of Rome Tor Vergata and IAC-CNR)
-Pasqua D'Ambra         (IAC-CNR, Naples, IT)
-Fabio Durastante       (IAC-CNR, Naples, IT)
+AMG4PSBLAS is a package of parallel algebraic multilevel preconditioners included in the PSCToolkit (Parallel Sparse Computation Toolkit) software framework.
 
----------------------------------------------------------------------
+It is a progress of a software development project started in 2007, named MLD2P4, which originally implemented a multilevel version of some domain decomposition preconditioners of additive-Schwarz type and was based on a parallel decoupled version of the well known smoothed aggregation method to generate the multilevel hierarchy of coarser matrices.
 
-AMG4PSBLAS is a package of Algebraic MultiGrid (AMG)
-preconditioners for  the iterative solution of large and sparse linear systems.
+In the last years the package was extended for including new algorithms and functionalities for the setup and application new AMG preconditioners with the final aims of improving efficiency and scalability when tens of thousands cores are used and of boosting reliability in dealing with general symmetric positive definite linear systems.
 
-It is an evolution of MLD2P4 (see LICENSE.MLD2P4), but it has been
-thoroughly reworked, and it is sufficiently different to warrant a new
-project name.
+It is an evolution of MLD2P4 (see [LICENSE.MLD2P4](LICENSE.MLD2P4)), but due to the significant number of changes and the increase in scope, we decided to rename the package as AMG4PSBLAS.
 
+AMG4PSBLAS has been designed to provide scalable and easy-to-use preconditioners in the context of the PSBLAS (Parallel Sparse Basic Linear Algebra Subprograms) computational framework and can be used in conjuction with the Krylov solvers available in this framework. Our package is based on a completely algebraic approach; therefore users level interfaces assume that the system matrix and preconditioners are represented as PSBLAS distributed sparse matrices.
 
-MAIN REFERENCES:
+AMG4PSBLAS enables the user to easily specify different features of an algebraic multilevel preconditioner, thus allowing to experiment with different preconditioners for the problem and parallel computers at hand.
 
-     
+The package employs object-oriented design techniques in Fortran 2008, with interfaces to additional third party libraries such as MUMPS, UMFPACK, SuperLU, and SuperLU_Dist, which can be exploited in building multilevel preconditioners. The parallel implementation is based on a Single Program Multiple Data (SPMD) paradigm; the inter-process communication is based on MPI and is managed mainly through PSBLAS.
 
-P. D'Ambra, D. di Serafino, S. Filippone,
-MLD2P4: a Package of Parallel Algebraic Multilevel Domain Decomposition
-Preconditioners in Fortran 95,
-ACM Transactions on Mathematical Software, 37 (3), 2010, art. 30,
-doi: 10.1145/1824801.1824808.
+## Main Refrerences:
 
+The main reference for this project is
+> D'Ambra, P., Durastante, F., & Filippone, S. (2021). AMG preconditioners for linear solvers towards extreme scale. SIAM Journal on Scientific Computing, 43(5), S679-S703.
 
-TO COMPILE
+AMG4PSBLAS is the suite of preconditioners for the Parallel Sparse Computation Toolkit ([PSCToolkit](https://psctoolkit.github.io/)) suite of libraries. See the paper:
+> D’Ambra, P., Durastante, F., & Filippone, S. (2023). Parallel Sparse Computation Toolkit. Software Impacts, 15, 100463.
+
+The main reference for features inherited from MLD2P4 is
+> P. D'Ambra, D. di Serafino, S. Filippone,
+> MLD2P4: a Package of Parallel Algebraic Multilevel Domain Decomposition
+> Preconditioners in Fortran 95,
+> ACM Transactions on Mathematical Software, 37 (3), 2010, art. 30,
+> doi: 10.1145/1824801.1824808.
+
+## Installing
+
+Installation requires having a working version of the [PSBLAS](https://github.com/sfilippone/psblas3) library installed.
+AMG4PSBLAS has several interfaces to third-party libraries that can be used in the construction and application phases of preconditioners. 
+In particular, it is possible to link AMG4PSBLAS with the libraries: MUMPS, SuperLU, SuperLU_Dist, UMFPACK. This is _not mandatory_ and the library can run 
+in isolation and without these features.
 
 0. Unpack the tar file in a directory of your choice (preferrably
    outside the main PSBLAS directory).
-1. run configure --with-psblas=<ABSOLUTE path of the PSBLAS install directory>
+1. run configure `--with-psblas=<ABSOLUTE path of the PSBLAS install directory>`
    adding the options for MUMPS, SuperLU, SuperLU_Dist, UMFPACK as desired.
-   See MLD2P4 User's and Reference Guide (Section 3) for details.
-2. Tweak Make.inc if you are not satisfied.
-3. make; 
+   See [AMG4PSBLAS User's and Reference Guide](docs/amg4psblas_1.0-guide.pdf) (Section 3) for details.
+2. Tweak `Make.inc` if you are not satisfied.
+3. run `make`; 
 4. Go into the test subdirectory and build the examples of your choice.
-5. (if desired): make install 
+5. (if desired): `make install` 
 
+>[!CAUTION]
+>The single precision version is supported only by MUMPS and SuperLU;
+>thus, even if you specify at configure time to use UMFPACK or SuperLU_Dist,
+>the corresponding preconditioner options will be available only from
+>the double precision version.
 
-NOTES
+### CUDA, OpeMP, OpenACC
 
-- The single precision version is supported only by MUMPS and SuperLU;
-  thus, even if you specify at configure time to use UMFPACK or SuperLU_Dist, 
-  the corresponding preconditioner options will be available only from
-  the double precision version.
+CUDA, OpenMP and OpenACC features are transparently inherited by PSBLAS installation. If PSBLAS has been configured (and installed) with these supports then AMG4PSBLAS will transparently inherit them. It will then be possible to move the computation to GPU accelerator simply by selecting the appropriate variable types. If these have not been activated or installed for PSBLAS then they will not be available for AMG4PSBLAS either and the operation will be purely on CPU/MPI.
 
+### EoCoE - Software as service portal
+
+In the European project “Energy oriented Center of Excellence: toward exascale for energy” we made available a software as service portal: [https://eocoe.psnc.pl/](https://eocoe.psnc.pl/). This permits to test several cutting-edge computational methods for accelerating the transition to the production, storage and management of clean, decarbonized energy. Among them you have the possibility of running PSBLAS+AMG4PSBLAS on some test problems to become familiar with using the software.
+
+## TODO and bugs
+ 
+- [X] Fix all reamining bugs. Bugs? We dont' have any ! 🤓
+
+> [!NOTE]
+> To report bugs 🐛 or issues ❓ please use the [GitHub issue system](https://github.com/sfilippone/amg4psblas/issues).
+
+## The AMG4PSBLAS team. 
+
+- Pasqua D'Ambra         (IAC-CNR, Naples, IT)
+- Fabio Durastante       (University of Pisa and IAC-CNR, IT)
+- Salvatore Filippone    (University of Rome Tor Vergata and IAC-CNR, IT)
 
-The AMG4PSBLAS team. 
----------------
-Salvatore Filippone
-Pasqua     D'Ambra
-Fabio     Durastante

amgprec/Makefile

@@ -9,9 +9,10 @@ FINCLUDES=$(FMFLAG)$(HERE) $(FMFLAG)$(INCDIR) $(PSBLAS_INCLUDES)
 
 DMODOBJS=amg_d_prec_type.o \
 	amg_d_inner_mod.o amg_d_ilu_solver.o amg_d_diag_solver.o amg_d_jac_smoother.o amg_d_as_smoother.o \
+        amg_d_poly_smoother.o amg_d_poly_coeff_mod.o\
 	amg_d_umf_solver.o amg_d_slu_solver.o amg_d_sludist_solver.o amg_d_id_solver.o\
 	amg_d_base_solver_mod.o amg_d_base_smoother_mod.o amg_d_onelev_mod.o \
-	amg_d_gs_solver.o amg_d_mumps_solver.o \
+	amg_d_gs_solver.o amg_d_mumps_solver.o amg_d_jac_solver.o \
 	amg_d_base_aggregator_mod.o \
 	amg_d_dec_aggregator_mod.o amg_d_symdec_aggregator_mod.o \
 	amg_d_ainv_solver.o amg_d_base_ainv_mod.o \
@@ -20,9 +21,9 @@ DMODOBJS=amg_d_prec_type.o \
 
 SMODOBJS=amg_s_prec_type.o amg_s_ilu_fact_mod.o \
 	amg_s_inner_mod.o amg_s_ilu_solver.o amg_s_diag_solver.o amg_s_jac_smoother.o amg_s_as_smoother.o \
-	amg_s_slu_solver.o amg_s_id_solver.o\
+	amg_s_poly_smoother.o amg_s_slu_solver.o amg_s_id_solver.o\
 	amg_s_base_solver_mod.o amg_s_base_smoother_mod.o amg_s_onelev_mod.o  \
-	amg_s_gs_solver.o amg_s_mumps_solver.o \
+	amg_s_gs_solver.o amg_s_mumps_solver.o  amg_s_jac_solver.o \
 	amg_s_base_aggregator_mod.o  \
 	amg_s_dec_aggregator_mod.o amg_s_symdec_aggregator_mod.o \
 	amg_s_ainv_solver.o amg_s_base_ainv_mod.o \
@@ -33,7 +34,7 @@ ZMODOBJS=amg_z_prec_type.o amg_z_ilu_fact_mod.o \
 	amg_z_inner_mod.o amg_z_ilu_solver.o amg_z_diag_solver.o amg_z_jac_smoother.o amg_z_as_smoother.o \
 	amg_z_umf_solver.o amg_z_slu_solver.o amg_z_sludist_solver.o amg_z_id_solver.o\
 	amg_z_base_solver_mod.o amg_z_base_smoother_mod.o amg_z_onelev_mod.o \
-	amg_z_gs_solver.o amg_z_mumps_solver.o \
+	amg_z_gs_solver.o amg_z_mumps_solver.o  amg_z_jac_solver.o \
 	amg_z_base_aggregator_mod.o  \
 	amg_z_dec_aggregator_mod.o amg_z_symdec_aggregator_mod.o \
 	amg_z_ainv_solver.o amg_z_base_ainv_mod.o \
@@ -43,7 +44,7 @@ CMODOBJS=amg_c_prec_type.o amg_c_ilu_fact_mod.o \
 	amg_c_inner_mod.o amg_c_ilu_solver.o amg_c_diag_solver.o amg_c_jac_smoother.o amg_c_as_smoother.o \
 	amg_c_slu_solver.o amg_c_id_solver.o\
 	amg_c_base_solver_mod.o amg_c_base_smoother_mod.o amg_c_onelev_mod.o  \
-	amg_c_gs_solver.o amg_c_mumps_solver.o \
+	amg_c_gs_solver.o amg_c_mumps_solver.o  amg_c_jac_solver.o \
 	amg_c_base_aggregator_mod.o  \
 	amg_c_dec_aggregator_mod.o amg_c_symdec_aggregator_mod.o \
 	amg_c_ainv_solver.o amg_c_base_ainv_mod.o \
@@ -62,17 +63,20 @@ OBJS=$(MODOBJS)
 LOCAL_MODS=$(MODOBJS:.o=$(.mod))
 LIBNAME=libamg_prec.a
 
-all: lib impld
+all: objs impld
 
-impld: $(OBJS)
-	$(MAKE) -C impl
+objs: $(OBJS)
+	/bin/cp -p amg_const.h $(INCDIR)
+	/bin/cp -p *$(.mod) $(MODDIR)
+
+impld: objs
+	cd impl && $(MAKE) 
 
 lib: $(OBJS) impld
+	cd impl && $(MAKE) lib
 	$(AR) $(HERE)/$(LIBNAME) $(OBJS)
 	$(RANLIB) $(HERE)/$(LIBNAME)
 	/bin/cp -p $(HERE)/$(LIBNAME) $(LIBDIR)
-	/bin/cp -p amg_const.h $(INCDIR)
-	/bin/cp -p *$(.mod) $(MODDIR)
 
 
 $(MODOBJS): $(PSBLAS_MODDIR)/$(PSBBASEMODNAME)$(.mod)
@@ -152,7 +156,7 @@ amg_z_base_ainv_mod.o: amg_z_base_solver_mod.o amg_base_ainv_mod.o
 amg_s_base_solver_mod.o amg_d_base_solver_mod.o amg_c_base_solver_mod.o amg_z_base_solver_mod.o: amg_base_prec_type.o
 
 amg_d_mumps_solver.o amg_d_gs_solver.o amg_d_id_solver.o amg_d_sludist_solver.o amg_d_slu_solver.o \
-amg_d_umf_solver.o amg_d_diag_solver.o amg_d_ilu_solver.o: amg_d_base_solver_mod.o  amg_d_prec_type.o
+amg_d_umf_solver.o amg_d_diag_solver.o amg_d_ilu_solver.o amg_d_jac_solver.o: amg_d_base_solver_mod.o  amg_d_prec_type.o
 
 #amg_d_ilu_fact_mod.o: amg_base_prec_type.o  amg_d_base_solver_mod.o
 #amg_d_ilu_solver.o amg_d_iluk_fact.o: amg_d_ilu_fact_mod.o
@@ -161,9 +165,11 @@ amg_d_jac_smoother.o: amg_d_diag_solver.o
 amg_dprecinit.o amg_dprecset.o: amg_d_diag_solver.o amg_d_ilu_solver.o \
 		amg_d_umf_solver.o amg_d_as_smoother.o amg_d_jac_smoother.o \
 	        amg_d_id_solver.o amg_d_slu_solver.o amg_d_sludist_solver.o
+amg_d_poly_smoother.o: amg_d_base_smoother_mod.o amg_d_poly_coeff_mod.o
+amg_s_poly_smoother.o: amg_s_base_smoother_mod.o amg_d_poly_coeff_mod.o	
 
 amg_s_mumps_solver.o amg_s_gs_solver.o amg_s_id_solver.o amg_s_slu_solver.o \
-amg_s_diag_solver.o amg_s_ilu_solver.o: amg_s_base_solver_mod.o  amg_s_prec_type.o
+amg_s_diag_solver.o amg_s_ilu_solver.o amg_s_jac_solver.o: amg_s_base_solver_mod.o  amg_s_prec_type.o
 amg_s_ilu_fact_mod.o: amg_base_prec_type.o  amg_s_base_solver_mod.o
 amg_s_ilu_solver.o amg_s_iluk_fact.o: amg_s_ilu_fact_mod.o
 amg_s_as_smoother.o amg_s_jac_smoother.o: amg_s_base_smoother_mod.o
@@ -173,7 +179,7 @@ amg_sprecinit.o amg_sprecset.o: amg_s_diag_solver.o amg_s_ilu_solver.o \
 	        amg_s_id_solver.o amg_s_slu_solver.o
 
 amg_z_mumps_solver.o amg_z_gs_solver.o amg_z_id_solver.o amg_z_sludist_solver.o amg_z_slu_solver.o \
-amg_z_umf_solver.o amg_z_diag_solver.o amg_z_ilu_solver.o: amg_z_base_solver_mod.o  amg_z_prec_type.o
+amg_z_umf_solver.o amg_z_diag_solver.o amg_z_ilu_solver.o amg_z_jac_solver.o: amg_z_base_solver_mod.o  amg_z_prec_type.o
 amg_z_ilu_fact_mod.o: amg_base_prec_type.o  amg_z_base_solver_mod.o
 amg_z_ilu_solver.o amg_z_iluk_fact.o: amg_z_ilu_fact_mod.o
 amg_z_as_smoother.o amg_z_jac_smoother.o: amg_z_base_smoother_mod.o
@@ -183,7 +189,7 @@ amg_zprecinit.o amg_zprecset.o: amg_z_diag_solver.o amg_z_ilu_solver.o \
 	        amg_z_id_solver.o amg_z_slu_solver.o amg_z_sludist_solver.o
 
 amg_c_mumps_solver.o amg_c_gs_solver.o amg_c_id_solver.o amg_c_sludist_solver.o amg_c_slu_solver.o \
-amg_c_diag_solver.o amg_c_ilu_solver.o: amg_c_base_solver_mod.o  amg_c_prec_type.o
+amg_c_diag_solver.o amg_c_ilu_solver.o amg_c_jac_solver.o: amg_c_base_solver_mod.o  amg_c_prec_type.o
 amg_c_ilu_fact_mod.o: amg_base_prec_type.o  amg_c_base_solver_mod.o
 amg_c_ilu_solver.o amg_c_iluk_fact.o: amg_c_ilu_fact_mod.o
 amg_c_as_smoother.o amg_c_jac_smoother.o: amg_c_base_smoother_mod.o
@@ -218,4 +224,4 @@ clean: implclean
 	/bin/rm -f $(OBJS) $(LOCAL_MODS) *$(.mod)
 
 implclean:
-	$(MAKE) -C impl clean
+	cd impl && $(MAKE) clean

amgprec/amg_base_prec_type.F90

@@ -64,7 +64,7 @@ module amg_base_prec_type
   !
   use psb_const_mod
   use psb_base_mod, only :&
-       & psb_desc_type, psb_i_vect_type, psb_i_base_vect_type,&
+       & psb_desc_type, psb_ctxt_type,&
        & psb_ipk_, psb_dpk_, psb_spk_, psb_epk_,  &
        & psb_cdfree, psb_halo_, psb_none_, psb_sum_, psb_avg_, &
        & psb_nohalo_, psb_square_root_, psb_toupper, psb_root_,&
@@ -81,9 +81,9 @@ module amg_base_prec_type
   !
   ! Version numbers
   !
-  character(len=*), parameter   :: amg_version_string_ = "1.0.0"
+  character(len=*), parameter   :: amg_version_string_ = "1.1.0"
   integer(psb_ipk_), parameter  :: amg_version_major_  = 1
-  integer(psb_ipk_), parameter  :: amg_version_minor_  = 0
+  integer(psb_ipk_), parameter  :: amg_version_minor_  = 1
   integer(psb_ipk_), parameter  :: amg_patchlevel_     = 0
 
   type amg_ml_parms
@@ -94,6 +94,7 @@ module amg_base_prec_type
     integer(psb_ipk_) :: aggr_omega_alg, aggr_eig, aggr_filter
     integer(psb_ipk_) :: coarse_mat, coarse_solve
   contains
+    procedure, pass(pm) :: get_coarse_mat  => ml_parms_get_coarse_mat
     procedure, pass(pm) :: get_coarse  => ml_parms_get_coarse
     procedure, pass(pm) :: clone       => ml_parms_clone
     procedure, pass(pm) :: descr       => ml_parms_descr
@@ -214,7 +215,8 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_fbgs_     = 6
   integer(psb_ipk_), parameter :: amg_l1_gs_    = 7
   integer(psb_ipk_), parameter :: amg_l1_fbgs_  = 8
-  integer(psb_ipk_), parameter :: amg_max_prec_ = 8
+  integer(psb_ipk_), parameter :: amg_poly_     = 9
+  integer(psb_ipk_), parameter :: amg_max_prec_ = 9
   !
   ! Constants for pre/post signaling. Now only used internally
   !
@@ -232,9 +234,9 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_diag_scale_    = amg_slv_delta_+1
   integer(psb_ipk_), parameter :: amg_l1_diag_scale_ = amg_slv_delta_+2
   integer(psb_ipk_), parameter :: amg_gs_            = amg_slv_delta_+3
-  ! !$  integer(psb_ipk_), parameter :: amg_ilu_n_         = amg_slv_delta_+4
-  ! !$  integer(psb_ipk_), parameter :: amg_milu_n_        = amg_slv_delta_+5
-  ! !$  integer(psb_ipk_), parameter :: amg_ilu_t_         = amg_slv_delta_+6
+  integer(psb_ipk_), parameter :: amg_ilu_n_         = amg_slv_delta_+4
+  integer(psb_ipk_), parameter :: amg_milu_n_        = amg_slv_delta_+5
+  integer(psb_ipk_), parameter :: amg_ilu_t_         = amg_slv_delta_+6
   integer(psb_ipk_), parameter :: amg_slu_           = amg_slv_delta_+7
   integer(psb_ipk_), parameter :: amg_umf_           = amg_slv_delta_+8
   integer(psb_ipk_), parameter :: amg_sludist_       = amg_slv_delta_+9
@@ -286,17 +288,19 @@ module amg_base_prec_type
   !
   ! Legal values for entry: amg_aggr_prol_
   !
-  integer(psb_ipk_), parameter :: amg_no_smooth_   = 0
-  integer(psb_ipk_), parameter :: amg_smooth_prol_ = 1
-  integer(psb_ipk_), parameter :: amg_min_energy_  = 2
+  integer(psb_ipk_), parameter :: amg_no_smooth_      = 0
+  integer(psb_ipk_), parameter :: amg_smooth_prol_    = 1
+  integer(psb_ipk_), parameter :: amg_l1_smooth_prol_ = 2
+  integer(psb_ipk_), parameter :: amg_min_energy_     = 3
   ! Disabling min_energy  for the time being.
-  integer(psb_ipk_), parameter :: amg_max_aggr_prol_=amg_smooth_prol_
+  integer(psb_ipk_), parameter :: amg_max_aggr_prol_= amg_l1_smooth_prol_
   !
   ! Legal values for entry: amg_aggr_filter_
   !
-  integer(psb_ipk_), parameter :: amg_no_filter_mat_  = 0
-  integer(psb_ipk_), parameter :: amg_filter_mat_     = 1
-  integer(psb_ipk_), parameter :: amg_max_filter_mat_ = amg_filter_mat_
+  integer(psb_ipk_), parameter :: amg_no_filter_mat_   = 0
+  integer(psb_ipk_), parameter :: amg_filter_mat_      = 1
+  integer(psb_ipk_), parameter :: amg_filter_prow_mat_ = 2
+  integer(psb_ipk_), parameter :: amg_max_filter_mat_  = amg_filter_prow_mat_
   !
   ! Legal values for entry: amg_aggr_ord_
   !
@@ -318,6 +322,16 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_distr_mat_      = 0
   integer(psb_ipk_), parameter :: amg_repl_mat_       = 1
   integer(psb_ipk_), parameter :: amg_max_coarse_mat_ = amg_repl_mat_
+  !
+  ! Legal values for entry: amg_poly_variant_
+  !
+  integer(psb_ipk_), parameter :: amg_cheb_4_     = 0
+  integer(psb_ipk_), parameter :: amg_cheb_4_opt_ = 1
+  integer(psb_ipk_), parameter :: amg_cheb_1_opt_ = 2
+  integer(psb_ipk_), parameter :: amg_poly_dbg_   = 8
+  
+  integer(psb_ipk_), parameter :: amg_poly_rho_est_power_ = 0
+
   !
   ! Legal values for entry: amg_prec_status_
   !
@@ -364,10 +378,11 @@ module amg_base_prec_type
   character(len=19), parameter, private :: &
        &  eigen_estimates(0:0)=(/'infinity norm     '/)
   character(len=15), parameter, private :: &
-       &  aggr_prols(0:3)=(/'unsmoothed    ','smoothed      ',&
-       &           'min energy    ','bizr. smoothed'/)
+       &  aggr_prols(0:4)=(/'unsmoothed    ','smoothed      ',&
+       &  'l1-smoothed   ','min energy    ','bizr. smoothed'/)
   character(len=15), parameter, private :: &
-       &  aggr_filters(0:1)=(/'no filtering  ','filtering     '/)
+       &  aggr_filters(0:2)=(/'no filtering  ','filtering     ',&
+       &  'filtering rsum'/)
   character(len=15), parameter, private :: &
        &  matrix_names(0:1)=(/'distributed   ','replicated    '/)
   character(len=18), parameter, private :: &
@@ -389,12 +404,12 @@ module amg_base_prec_type
        &  ml_names(0:7)=(/'none          ','additive      ',&
        &  'multiplicative', 'VCycle        ','WCycle        ',&
        &  'KCycle        ','KCycleSym     ','new ML        '/)
-  character(len=15), parameter :: &
+  character(len=16), parameter :: &
        &  amg_fact_names(0:amg_max_sub_solve_)=(/&
        & 'none          ','Jacobi        ',&
        & 'L1-Jacobi     ','none          ','none          ',&
        & 'none          ','none          ','L1-GS         ',&
-       & 'L1-FBGS       ','none          ','Point Jacobi  ',&
+       & 'L1-FBGS       ','Polynomial    ','none          ','Point Jacobi  ',&
        & 'L1-Jacobi     ','Gauss-Seidel  ','ILU(n)        ',&
        & 'MILU(n)       ','ILU(t,n)      ',&
        & 'SuperLU       ','UMFPACK LU    ',&
@@ -456,12 +471,12 @@ contains
     character(len=*), parameter :: name='amg_stringval'
   ! Local variable
     integer :: index_tab
-    character(len=15) ::string2
+    character(len=128) ::string2
     index_tab=index(string,char(9))
     if (index_tab.NE.0)  then
-       string2=string(1:index_tab-1)
+      string2=string(1:index_tab-1)
     else
-       string2=string
+      string2=string
     endif
     select case(psb_toupper(trim(string2)))
     case('NONE')
@@ -481,11 +496,11 @@ contains
     case('BGS','BWGS')
       val = amg_bwgs_
     case('ILU')
-      val = psb_ilu_n_
+      val = amg_ilu_n_
     case('MILU')
-      val = psb_milu_n_
+      val = amg_milu_n_
     case('ILUT')
-      val = psb_ilu_t_
+      val = amg_ilu_t_
     case('MUMPS')
       val = amg_mumps_
     case('UMF')
@@ -536,6 +551,8 @@ contains
       val = amg_no_smooth_
     case('SMOOTHED')
       val = amg_smooth_prol_
+    case('L1-SMOOTHED','L1SMOOTHED')
+      val = amg_l1_smooth_prol_
     case('MINENERGY')
       val = amg_min_energy_
     case('NOPREC')
@@ -556,6 +573,18 @@ contains
       val = amg_krm_
     case('AS')
       val = amg_as_
+    case('POLY')
+      val = amg_poly_
+    case('CHEB_4')
+      val = amg_cheb_4_
+    case('CHEB_4_OPT')
+      val = amg_cheb_4_opt_
+    case('CHEB_1_OPT')
+      val = amg_cheb_1_opt_
+    case('POLY_DBG')
+      val = amg_poly_dbg_
+    case('POLY_RHO_EST_POWER')
+      val =  amg_poly_rho_est_power_
     case('A_NORMI')
       val = amg_max_norm_
     case('USER_CHOICE')
@@ -564,6 +593,8 @@ contains
       val = amg_eig_est_
     case('FILTER')
       val = amg_filter_mat_
+    case('FILTERROWSUM')
+      val = amg_filter_prow_mat_
     case('NOFILTER','NO_FILTER')
       val = amg_no_filter_mat_
     case('OUTER_SWEEPS')
@@ -577,6 +608,33 @@ contains
     end select
   end function amg_stringval
 
+  function amg_get_coarse_mat_name(val) result(res)
+    character(len=15) :: res
+    integer :: val
+    select case(val)
+    case (0,1)
+      res = matrix_names(val)
+    case default
+      res = 'Unknown '
+    end select
+  end function amg_get_coarse_mat_name
+
+  subroutine amg_warn_coarse_mat(val,expected)
+    integer(psb_ipk_) :: val, expected
+    if (val /= expected) then
+      write(0,*) 'Warning: resetting COARSE_MAT on an existing hierarchy from ',&
+           & amg_get_coarse_mat_name(val), ' to ',amg_get_coarse_mat_name(expected)
+    end if
+  end subroutine amg_warn_coarse_mat
+
+  
+  function  ml_parms_get_coarse_mat(pm) result(res)
+    implicit none
+    class(amg_ml_parms), intent(in)    :: pm
+    integer(psb_ipk_) :: res
+    res   = pm%coarse_mat
+  end function ml_parms_get_coarse_mat
+
   subroutine  ml_parms_get_coarse(pm,pmin)
     implicit none
     class(amg_ml_parms), intent(inout) :: pm
@@ -639,53 +697,62 @@ contains
            &   ml_names(pm%ml_cycle)
       select case (pm%ml_cycle)
       case (amg_add_ml_)
-        write(iout,*) '  Number of smoother sweeps : ',&
+        write(iout,*) '  Number of smoother sweeps/degree : ',&
              & pm%sweeps_pre
       case (amg_mult_ml_,amg_vcycle_ml_, amg_wcycle_ml_, amg_kcycle_ml_, amg_kcyclesym_ml_)
-        write(iout,*) '  Number of smoother sweeps : pre: ',&
+        write(iout,*) '  Number of smoother sweeps/degree : pre: ',&
              &  pm%sweeps_pre ,'  post: ', pm%sweeps_post
       end select
 
     end if
   end subroutine ml_parms_mlcycledsc
 
-  subroutine ml_parms_mldescr(pm,iout,info)
+  subroutine ml_parms_mldescr(pm,iout,info,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_ml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
+    class(amg_ml_parms), intent(in)        :: pm
+    integer(psb_ipk_), intent(in)          :: iout
+    integer(psb_ipk_), intent(out)         :: info
+    character(len=*), intent(in), optional :: prefix
+
+    character(1024)  :: prefix_ 
     info = psb_success_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+    
     if ((pm%ml_cycle>=amg_no_ml_).and.(pm%ml_cycle<=amg_max_ml_cycle_)) then
 
 
-      write(iout,*) '  Parallel aggregation algorithm: ',&
+      write(iout,*) trim(prefix),'  Parallel aggregation algorithm: ',&
            &   par_aggr_alg_names(pm%par_aggr_alg)
-      if (pm%aggr_type>0) write(iout,*) '  Aggregation type: ',&
+      if (pm%aggr_type>0) write(iout,*) trim(prefix),'  Aggregation type: ',&
            & aggr_type_names(pm%aggr_type)
       !if (pm%par_aggr_alg /= amg_ext_aggr_) then
         if ( pm%aggr_ord /= amg_aggr_ord_nat_) &
-             & write(iout,*) '               with initial ordering: ',&
+             & write(iout,*) trim(prefix),'               with initial ordering: ',&
              &   ord_names(pm%aggr_ord)
-        write(iout,*) '  Aggregation prolongator: ', &
+        write(iout,*) trim(prefix),'  Aggregation prolongator: ', &
              &  aggr_prols(pm%aggr_prol)
         if (pm%aggr_prol /= amg_no_smooth_) then
-          write(iout,*) '              with: ', aggr_filters(pm%aggr_filter)
+          write(iout,*) trim(prefix),'              with: ', aggr_filters(pm%aggr_filter)
           if (pm%aggr_omega_alg == amg_eig_est_) then
-            write(iout,*) '  Damping omega computation: spectral radius estimate'
-            write(iout,*) '  Spectral radius estimate: ', &
+            write(iout,*) trim(prefix),'  Damping omega computation: spectral radius estimate'
+            write(iout,*) trim(prefix),'  Spectral radius estimate: ', &
                  & eigen_estimates(pm%aggr_eig)
           else if (pm%aggr_omega_alg == amg_user_choice_) then
-            write(iout,*) '  Damping omega computation: user defined value.'
+            write(iout,*) trim(prefix),'  Damping omega computation: user defined value.'
           else
-            write(iout,*) '  Damping omega computation: unknown value in iprcparm!!'
+            write(iout,*) trim(prefix),'  Damping omega computation: unknown value in iprcparm!!'
           end if
         end if
       !end if
     else
-      write(iout,*) '  Multilevel type: Unkonwn value. Something is amiss....',&
+      write(iout,*) trim(prefix),'  Multilevel type: Unkonwn value. Something is amiss....',&
            & pm%ml_cycle
     end if
 
@@ -693,15 +760,16 @@ contains
 
   end subroutine ml_parms_mldescr
 
-  subroutine ml_parms_descr(pm,iout,info,coarse)
+  subroutine ml_parms_descr(pm,iout,info,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_ml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
-    logical, intent(in), optional   :: coarse
+    class(amg_ml_parms), intent(in)        :: pm
+    integer(psb_ipk_), intent(in)          :: iout
+    integer(psb_ipk_), intent(out)         :: info
+    logical, intent(in), optional          :: coarse
+    character(len=*), intent(in), optional :: prefix
     logical :: coarse_
 
     info = psb_success_
@@ -712,7 +780,7 @@ contains
     end if
 
     if (coarse_) then
-      call pm%coarsedescr(iout,info)
+      call pm%coarsedescr(iout,info,prefix=prefix)
     end if
 
     return
@@ -720,81 +788,126 @@ contains
   end subroutine ml_parms_descr
 
 
-  subroutine ml_parms_coarsedescr(pm,iout,info)
+  subroutine ml_parms_coarsedescr(pm,iout,info,prefix)
 
 
     Implicit None
 
     ! Arguments
-    class(amg_ml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
+    class(amg_ml_parms), intent(in)       :: pm
+    integer(psb_ipk_), intent(in)         :: iout
+    integer(psb_ipk_), intent(out)        :: info
+    character(len=*), intent(in), optional :: prefix
+
+    character(1024)  :: prefix_ 
 
     info = psb_success_
-    write(iout,*) '  Coarse matrix: ',&
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix),'  Coarse matrix: ',&
          & matrix_names(pm%coarse_mat)
     select case(pm%coarse_solve)
     case (amg_bjac_,amg_as_)
-      write(iout,*) '  Number of sweeps : ',&
-           & pm%sweeps_pre
-      write(iout,*) '  Coarse solver: ',&
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
            & 'Block Jacobi'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
     case (amg_l1_bjac_)
-      write(iout,*) '  Number of sweeps : ',&
-           & pm%sweeps_pre
-      write(iout,*) '  Coarse solver: ',&
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
            & 'L1-Block Jacobi'
-    case (amg_jac_)
-      write(iout,*) '  Number of sweeps : ',&
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
            & pm%sweeps_pre
-      write(iout,*) '  Coarse solver: ',&
+    case (amg_jac_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
            & 'Point Jacobi'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
+    case (amg_l1_jac_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
+           & 'L1-Jacobi'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
+    case (amg_l1_fbgs_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
+           & 'L1 Forward-Backward Gauss-Seidel (Hybrid)'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
+    case (amg_l1_gs_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
+           & 'L1 Gauss-Seidel (Hybrid)'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
+    case (amg_fbgs_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
+           & 'Forward-Backward Gauss-Seidel (Hybrid)'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
     case default
-      write(iout,*) '  Coarse solver: ',&
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
            & amg_fact_names(pm%coarse_solve)
     end select
-
+    
   end subroutine ml_parms_coarsedescr
 
-  subroutine s_ml_parms_descr(pm,iout,info,coarse)
+  subroutine s_ml_parms_descr(pm,iout,info,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_sml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
-    logical, intent(in), optional   :: coarse
+    class(amg_sml_parms), intent(in)       :: pm
+    integer(psb_ipk_), intent(in)          :: iout
+    integer(psb_ipk_), intent(out)         :: info
+    logical, intent(in), optional          :: coarse
+    character(len=*), intent(in), optional :: prefix
+
+    character(1024)  :: prefix_ 
 
     info = psb_success_
-
-    call pm%amg_ml_parms%descr(iout,info,coarse)
-    if (pm%aggr_prol /= amg_no_smooth_) then
-      write(iout,*) '  Damping omega value  :',pm%aggr_omega_val
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
     end if
-    write(iout,*) '  Aggregation threshold:',pm%aggr_thresh
+
+    call pm%amg_ml_parms%descr(iout,info,coarse,prefix=prefix)
+    if (pm%aggr_prol /= amg_no_smooth_) then
+      write(iout,*) trim(prefix),'  Damping omega value  :',pm%aggr_omega_val
+    end if
+    write(iout,*) trim(prefix),'  Aggregation threshold:',pm%aggr_thresh
 
     return
 
   end subroutine s_ml_parms_descr
 
-  subroutine d_ml_parms_descr(pm,iout,info,coarse)
+  subroutine d_ml_parms_descr(pm,iout,info,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_dml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
-    logical, intent(in), optional   :: coarse
+    class(amg_dml_parms), intent(in)       :: pm
+    integer(psb_ipk_), intent(in)          :: iout
+    integer(psb_ipk_), intent(out)         :: info
+    logical, intent(in), optional          :: coarse
+    character(len=*), intent(in), optional :: prefix
+
+    character(1024)  :: prefix_ 
 
     info = psb_success_
-
-    call pm%amg_ml_parms%descr(iout,info,coarse)
-    if (pm%aggr_prol /= amg_no_smooth_) then
-      write(iout,*) '  Damping omega value  :',pm%aggr_omega_val
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
     end if
-    write(iout,*) '  Aggregation threshold:',pm%aggr_thresh
+
+    call pm%amg_ml_parms%descr(iout,info,coarse,prefix=prefix)
+    if (pm%aggr_prol /= amg_no_smooth_) then
+      write(iout,*) trim(prefix),'  Damping omega value  :',pm%aggr_omega_val
+    end if
+    write(iout,*) trim(prefix),'  Aggregation threshold:',pm%aggr_thresh
 
     return
 
@@ -953,8 +1066,8 @@ contains
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ilu_fact
 
-    is_legal_ilu_fact = ((ip==psb_ilu_n_).or.&
-         & (ip==psb_milu_n_).or.(ip==psb_ilu_t_))
+    is_legal_ilu_fact = ((ip==amg_ilu_n_).or.&
+         & (ip==amg_milu_n_).or.(ip==amg_ilu_t_))
     return
   end function is_legal_ilu_fact
   function is_legal_d_omega(ip)

amgprec/amg_c_ainv_solver.F90

@@ -58,6 +58,7 @@ module amg_c_ainv_solver
     procedure, pass(sv) :: check   => amg_c_ainv_solver_check
     procedure, pass(sv) :: build   => amg_c_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_c_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_c_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_c_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_c_ainv_solver_csetr
@@ -85,6 +86,16 @@ module amg_c_ainv_solver
     end subroutine amg_c_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_dpk_, amg_c_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_ainv_solver_type), intent(inout) :: sv
+      class(amg_c_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_c_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_c_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -198,7 +209,7 @@ module amg_c_ainv_solver
 !!$  end interface
 
   interface
-    subroutine amg_c_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_c_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -208,7 +219,7 @@ module amg_c_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_ainv_solver_descr
   end interface
 

amgprec/amg_c_as_smoother.f90

@@ -396,21 +396,23 @@ contains
   end subroutine c_as_smoother_default
 
 
-  subroutine c_as_smoother_descr(sm,info,iout,coarse)
+  subroutine c_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_c_base_aggregator_mod.f90

@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_c_base_aggregator_xt_desc
 
-  subroutine  amg_c_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_base_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_base_aggregator_descr

amgprec/amg_c_base_smoother_mod.f90

@@ -272,7 +272,7 @@ module amg_c_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_c_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
            & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
            & amg_c_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_c_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_c_base_smoother_descr
   end interface
   

amgprec/amg_c_base_solver_mod.f90

@@ -270,7 +270,7 @@ module amg_c_base_solver_mod
   end interface
   
   interface
-    subroutine amg_c_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
            & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
            & amg_c_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_c_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_c_base_solver_descr
   end interface 
   

amgprec/amg_c_dec_aggregator_mod.f90

@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_c_dec_aggregator_fmt
   
-  subroutine  amg_c_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_dec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_dec_aggregator_descr

amgprec/amg_c_diag_solver.f90

@@ -219,7 +219,7 @@ contains
 
   end subroutine c_diag_solver_free
 
-  subroutine c_diag_solver_descr(sv,info,iout,coarse)
+  subroutine c_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_c_l1_diag_solver
   
 contains
 
-  subroutine c_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine c_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_c_gs_solver.f90

@@ -433,20 +433,22 @@ contains
     return
   end subroutine c_gs_solver_free
 
-  subroutine c_gs_solver_descr(sv,info,iout,coarse)
+  subroutine c_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function c_gs_solver_is_iterative
     
-  subroutine c_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine c_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_c_id_solver.f90

@@ -157,7 +157,7 @@ contains
     return
   end subroutine c_id_solver_free
 
-  subroutine c_id_solver_descr(sv,info,iout,coarse)
+  subroutine c_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_c_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_c_ilu_solver.f90

@@ -234,7 +234,7 @@ contains
     ! Arguments
     class(amg_c_ilu_solver_type), intent(inout) :: sv
 
-    sv%fact_type = psb_ilu_n_
+    sv%fact_type = amg_ilu_n_
     sv%fill_in   = 0
     sv%thresh    = szero
 
@@ -255,13 +255,13 @@ contains
     info = psb_success_
 
     call amg_check_def(sv%fact_type,&
-         & 'Factorization',psb_ilu_n_,is_legal_ilu_fact)
+         & 'Factorization',amg_ilu_n_,is_legal_ilu_fact)
 
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
+    case(amg_ilu_n_,amg_milu_n_)      
       call amg_check_def(sv%fill_in,&
            & 'Level',izero,is_int_non_negative)
-    case(psb_ilu_t_)                 
+    case(amg_ilu_t_)                 
       call amg_check_def(sv%thresh,&
            & 'Eps',szero,is_legal_s_fact_thrs)
     end select
@@ -406,7 +406,7 @@ contains
     return
   end subroutine c_ilu_solver_free
 
-  subroutine c_ilu_solver_descr(sv,info,iout,coarse)
+  subroutine c_ilu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -414,12 +414,14 @@ contains
     class(amg_c_ilu_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
-
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
+      
     ! Local variables
     integer(psb_ipk_) :: err_act
     character(len=20), parameter :: name='amg_c_ilu_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -428,15 +430,20 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout_,*) '  Incomplete factorization solver: ',&
+    write(iout_,*) trim(prefix_), '  Incomplete factorization solver: ',&
          &  amg_fact_names(sv%fact_type)
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
-      write(iout_,*) '  Fill level:',sv%fill_in
-    case(psb_ilu_t_)         
-      write(iout_,*) '  Fill level:',sv%fill_in
-      write(iout_,*) '  Fill threshold :',sv%thresh
+    case(amg_ilu_n_,amg_milu_n_)      
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+    case(amg_ilu_t_)         
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+      write(iout_,*) trim(prefix_), '  Fill threshold :',sv%thresh
     end select
 
     call psb_erractionrestore(err_act)
@@ -489,7 +496,7 @@ contains
     implicit none 
     integer(psb_ipk_)  :: val
     
-    val = psb_ilu_n_
+    val = amg_ilu_n_
   end function c_ilu_solver_get_id
 
   function c_ilu_solver_get_wrksize() result(val)

amgprec/amg_c_inner_mod.f90

@@ -109,11 +109,12 @@ module amg_c_inner_mod
   end interface amg_map_to_tprol
 
   abstract interface
-    subroutine amg_caggrmat_var_bld(a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_caggrmat_var_bld(dol1smoothing,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: psb_cspmat_type, psb_desc_type, psb_spk_, psb_ipk_, psb_lpk_, psb_lcspmat_type
       import ::  amg_c_onelev_type, amg_sml_parms
       implicit none 
+      integer(psb_ipk_), intent(in)               :: dol1smoothing
       type(psb_cspmat_type), intent(in)         :: a
       type(psb_desc_type), intent(inout)          :: desc_a
       integer(psb_lpk_), intent(inout)            :: ilaggr(:), nlaggr(:)

amgprec/amg_c_invk_solver.f90

@@ -52,6 +52,7 @@ module amg_c_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_c_invk_solver_check
     procedure, pass(sv) :: clone   => amg_c_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_c_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_c_invk_solver_cseti
     procedure, pass(sv) :: descr   => amg_c_invk_solver_descr
@@ -73,6 +74,17 @@ module amg_c_invk_solver
     end subroutine amg_c_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_spk_, amg_c_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_invk_solver_type), intent(inout) :: sv
+      class(amg_c_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_c_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_c_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
@@ -123,7 +135,7 @@ module amg_c_invk_solver
   end interface
 
   interface
-    subroutine amg_c_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_c_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -133,7 +145,7 @@ module amg_c_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_invk_solver_descr
   end interface
 

amgprec/amg_c_invt_solver.f90

@@ -52,6 +52,7 @@ module amg_c_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_c_invt_solver_check
     procedure, pass(sv) :: clone   => amg_c_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_c_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_c_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_c_invt_solver_csetr
@@ -73,6 +74,17 @@ module amg_c_invt_solver
     end subroutine amg_c_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_spk_, amg_c_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_invt_solver_type), intent(inout) :: sv
+      class(amg_c_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_c_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_c_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
@@ -134,16 +146,17 @@ module amg_c_invt_solver
   end interface
 
   interface
-    subroutine amg_c_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_c_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_c_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_c_invt_solver_descr
   end interface

amgprec/amg_c_jac_smoother.f90

@@ -203,8 +203,8 @@ module amg_c_jac_smoother
     subroutine amg_c_jac_smoother_clone_settings(sm,smout,info)
       import :: amg_c_jac_smoother_type, psb_spk_, &
            & amg_c_base_smoother_type, psb_ipk_
-      class(amg_c_jac_smoother_type), intent(inout)               :: sm
-      class(amg_c_base_smoother_type), allocatable, intent(inout) :: smout
+      class(amg_c_jac_smoother_type), intent(inout)  :: sm
+      class(amg_c_base_smoother_type), intent(inout) :: smout
       integer(psb_ipk_), intent(out)                :: info
     end subroutine amg_c_jac_smoother_clone_settings
   end interface
@@ -219,12 +219,13 @@ module amg_c_jac_smoother
   end interface
 
   interface
-    subroutine amg_c_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_c_jac_smoother_type, psb_ipk_
       class(amg_c_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_c_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_c_jac_smoother
   end interface
 
   interface
-    subroutine amg_c_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_c_l1_jac_smoother_type, psb_ipk_
       class(amg_c_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_c_l1_jac_smoother_descr
   end interface
 

amgprec/amg_c_jac_solver.f90

@@ -0,0 +1,585 @@
+!  
+!   
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante        
+!   
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!   
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!   
+!  
+!
+!
+! File: amg_c_jac_solver_mod.f90
+!
+! Module: amg_c_jac_solver_mod
+!
+!  This module defines: 
+!  - the amg_c_jac_solver_type data structure containing the ingredients
+!    for a local Jacobi  iteration. The iterations are local to a process
+!    (they operate on the block diagonal).
+!    
+!
+module amg_c_jac_solver
+
+  use amg_c_base_solver_mod
+
+  type, extends(amg_c_base_solver_type) :: amg_c_jac_solver_type
+    type(psb_cspmat_type)      :: a
+    type(psb_c_vect_type), allocatable :: dv
+    complex(psb_spk_), allocatable        :: d(:)
+    integer(psb_ipk_)          :: sweeps
+    real(psb_spk_)             :: eps
+  contains
+    procedure, pass(sv) :: dump    => amg_c_jac_solver_dmp
+    procedure, pass(sv) :: check   => c_jac_solver_check
+    procedure, pass(sv) :: clone   => amg_c_jac_solver_clone
+    procedure, pass(sv) :: clone_settings => amg_c_jac_solver_clone_settings
+    procedure, pass(sv) :: clear_data     => amg_c_jac_solver_clear_data
+    procedure, pass(sv) :: build   => amg_c_jac_solver_bld
+    procedure, pass(sv) :: cnv     => amg_c_jac_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_c_jac_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_c_jac_solver_apply
+    procedure, pass(sv) :: free    => c_jac_solver_free
+    procedure, pass(sv) :: cseti   => c_jac_solver_cseti
+    procedure, pass(sv) :: csetc   => c_jac_solver_csetc
+    procedure, pass(sv) :: csetr   => c_jac_solver_csetr
+    procedure, pass(sv) :: descr   => c_jac_solver_descr
+    procedure, pass(sv) :: default => c_jac_solver_default
+    procedure, pass(sv) :: sizeof  => c_jac_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => c_jac_solver_get_nzeros
+    procedure, nopass   :: get_wrksz  => c_jac_solver_get_wrksize
+    procedure, nopass   :: get_fmt    => c_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => c_jac_solver_get_id
+    procedure, nopass   :: is_iterative => c_jac_solver_is_iterative
+  end type amg_c_jac_solver_type
+
+  type, extends(amg_c_jac_solver_type) :: amg_c_l1_jac_solver_type
+  contains
+    procedure, pass(sv) :: build   => amg_c_l1_jac_solver_bld
+    procedure, pass(sv) :: descr   => c_l1_jac_solver_descr
+    procedure, nopass   :: get_fmt    => c_l1_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => c_l1_jac_solver_get_id
+  end type amg_c_l1_jac_solver_type
+
+
+  private :: c_jac_solver_bld, c_jac_solver_apply, &
+       &  c_jac_solver_free,   &
+       &  c_jac_solver_descr,  c_jac_solver_sizeof, &
+       &  c_jac_solver_default, c_jac_solver_dmp, &
+       &  c_jac_solver_apply_vect, c_jac_solver_get_nzeros, &
+       &  c_jac_solver_get_fmt, c_jac_solver_check,&
+       &  c_jac_solver_is_iterative, &
+       &  c_jac_solver_get_id, c_jac_solver_get_wrksize
+
+  interface 
+    subroutine amg_c_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+         & trans,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_c_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)             :: desc_data
+      class(amg_c_jac_solver_type), intent(inout) :: sv
+      type(psb_c_vect_type),intent(inout)         :: x
+      type(psb_c_vect_type),intent(inout)         :: y
+      complex(psb_spk_),intent(in)                    :: alpha,beta
+      character(len=1),intent(in)                   :: trans
+      complex(psb_spk_),target, intent(inout)         :: work(:)
+      type(psb_c_vect_type),intent(inout)         :: wv(:)
+      integer(psb_ipk_), intent(out)                :: info
+      character, intent(in), optional                :: init
+      type(psb_c_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_c_jac_solver_apply_vect
+  end interface
+
+  interface 
+    subroutine amg_c_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info,init,initu)
+      import :: psb_desc_type, amg_c_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)      :: desc_data
+      class(amg_c_jac_solver_type), intent(inout) :: sv
+      complex(psb_spk_),intent(inout)         :: x(:)
+      complex(psb_spk_),intent(inout)         :: y(:)
+      complex(psb_spk_),intent(in)            :: alpha,beta
+      character(len=1),intent(in)           :: trans
+      complex(psb_spk_),target, intent(inout) :: work(:)
+      integer(psb_ipk_), intent(out)        :: info
+      character, intent(in), optional       :: init
+      complex(psb_spk_),intent(inout), optional :: initu(:)
+    end subroutine amg_c_jac_solver_apply
+  end interface
+
+  interface 
+    subroutine amg_c_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_c_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_cspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_c_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_cspmat_type), intent(in), target, optional :: b
+      class(psb_c_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_c_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_c_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_c_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_c_l1_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_cspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_c_l1_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_cspmat_type), intent(in), target, optional :: b
+      class(psb_c_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_c_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_c_l1_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_c_jac_solver_cnv(sv,info,amold,vmold,imold)
+      import :: amg_c_jac_solver_type, psb_spk_, &
+           & psb_c_base_sparse_mat, psb_c_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      class(amg_c_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_c_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_c_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_c_jac_solver_cnv
+  end interface
+  
+  interface 
+    subroutine amg_c_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+      import :: psb_desc_type, amg_c_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type, &
+           & psb_ipk_
+      implicit none 
+      class(amg_c_jac_solver_type), intent(in) :: sv
+      type(psb_desc_type), intent(in)             :: desc
+      integer(psb_ipk_), intent(in)              :: level
+      integer(psb_ipk_), intent(out)             :: info
+      character(len=*), intent(in), optional     :: prefix, head
+      logical, optional, intent(in)              :: solver, global_num
+    end subroutine amg_c_jac_solver_dmp
+  end interface
+  
+  interface
+    subroutine amg_c_jac_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
+           & amg_c_base_solver_type, amg_c_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_c_jac_solver_type), intent(inout)               :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)              :: info
+    end subroutine amg_c_jac_solver_clone
+  end interface
+  
+!!$  interface
+!!$    subroutine amg_c_l1_jac_solver_clone(sv,svout,info)
+!!$      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+!!$           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
+!!$           & amg_c_base_solver_type, amg_c_l1_jac_solver_type, psb_ipk_
+!!$      Implicit None
+!!$      
+!!$      ! Arguments
+!!$      class(amg_c_l1_jac_solver_type), intent(inout)               :: sv
+!!$      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+!!$      integer(psb_ipk_), intent(out)              :: info
+!!$    end subroutine amg_c_l1_jac_solver_clone
+!!$  end interface
+
+  interface
+    subroutine amg_c_jac_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
+           & amg_c_base_solver_type, amg_c_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_c_jac_solver_type), intent(inout) :: sv
+      class(amg_c_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_c_jac_solver_clone_settings
+  end interface
+
+  interface
+    subroutine amg_c_jac_solver_clear_data(sv,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
+           & amg_c_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_c_jac_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_c_jac_solver_clear_data
+  end interface
+
+contains
+
+  subroutine c_jac_solver_default(sv)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv
+
+    sv%sweeps = ione
+    sv%eps    = dzero
+    
+    return
+  end subroutine c_jac_solver_default
+
+  subroutine c_jac_solver_check(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='c_jac_solver_check'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call amg_check_def(sv%sweeps,&
+         & 'Jacobi sweeps',ione,is_int_positive)
+
+    if (info /= psb_success_) goto 9999
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine c_jac_solver_check
+
+  subroutine c_jac_solver_cseti(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='c_jac_solver_cseti'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+    select case(psb_toupper(what))
+    case('SOLVER_SWEEPS')
+      sv%sweeps = val      
+    case default
+      call sv%amg_c_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_cseti
+
+  subroutine c_jac_solver_csetc(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv
+    character(len=*), intent(in)                  :: what 
+    character(len=*), intent(in)                  :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, ival
+    character(len=20)  :: name='c_jac_solver_csetc'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+
+    call sv%amg_c_base_solver_type%set(what,val,info,idx=idx)
+  
+    if (info /= psb_success_) then
+      info = psb_err_from_subroutine_
+      call psb_errpush(info, name)
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_csetc
+  
+  subroutine c_jac_solver_csetr(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    real(psb_spk_), intent(in)                     :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='c_jac_solver_csetr'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    select case(psb_toupper(what))
+    case('SOLVER_EPS') 
+      sv%eps = val
+    case default
+      call sv%amg_c_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_csetr
+
+  subroutine c_jac_solver_free(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='c_jac_solver_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call sv%a%free()
+    if (allocated(sv%dv)) then
+      call sv%dv%free(info)
+      deallocate(sv%dv)
+    end if
+    if (allocated(sv%d)) deallocate(sv%d)
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_free
+
+  subroutine c_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_c_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_descr
+
+  function c_jac_solver_get_nzeros(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+    
+    val = 0 
+    val = val + sv%a%get_nzeros()
+    val = val + sv%dv%get_nrows()
+
+    return
+  end function c_jac_solver_get_nzeros
+
+  function c_jac_solver_sizeof(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = psb_sizeof_ip 
+    val = val + sv%a%sizeof()
+    val = val + sv%dv%sizeof()
+
+    return
+  end function c_jac_solver_sizeof
+
+  function c_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "Jacobi solver"
+  end function c_jac_solver_get_fmt
+
+  function c_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_jac_
+  end function c_jac_solver_get_id
+
+  !
+  ! If this is true, then the solver needs a starting
+  ! guess. Currently only handled in JAC smoother. 
+  ! 
+  function c_jac_solver_is_iterative() result(val)
+    implicit none 
+    logical  :: val
+
+    val = .true.
+  end function c_jac_solver_is_iterative
+    
+  function c_jac_solver_get_wrksize() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = 2
+  end function c_jac_solver_get_wrksize
+
+  subroutine c_l1_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_l1_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_c_l1_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_l1_jac_solver_descr
+
+  function c_l1_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "L1-Jacobi solver"
+  end function c_l1_jac_solver_get_fmt
+
+  function c_l1_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_l1_jac_
+  end function c_l1_jac_solver_get_id
+  
+end module amg_c_jac_solver

amgprec/amg_c_krm_solver.f90

@@ -436,7 +436,7 @@ contains
     val = "KRM solver"
   end function c_krm_solver_get_fmt
 
-  subroutine c_krm_solver_descr(sv,info,iout,coarse)
+  subroutine c_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -444,12 +444,14 @@ contains
     class(amg_c_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -458,23 +460,22 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_c_mumps_solver.F90

@@ -78,7 +78,8 @@ module amg_c_mumps_solver
     !
     ! Controls to be set before MUMPS instantiation:
     !
-    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: LOCAL   1==amg_global_solver_: GLOBAL
+    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: 'LOCAL_SOLVER
+    !                            1==amg_global_solver_: 'GLOBAL_SOLVER'
     ! IPAR(2) : MUMPS_PRINT_ERR  print verbosity (see MUMPS)
     ! IPAR(3) : MUMPS_SYM        0: non-symmetric   2: symmetric
     integer(psb_ipk_), dimension(3) :: ipar
@@ -313,22 +314,24 @@ subroutine c_mumps_solver_finalize(sv)
 
 end subroutine c_mumps_solver_finalize
 
-subroutine c_mumps_solver_descr(sv,info,iout,coarse)
+subroutine c_mumps_solver_descr(sv,info,iout,coarse,prefix)
 
   Implicit None
 
   ! Arguments
   class(amg_c_mumps_solver_type), intent(in) :: sv
-  integer(psb_ipk_), intent(out)                     :: info
-  integer(psb_ipk_), intent(in), optional            :: iout
-  logical, intent(in), optional       :: coarse
-
+  integer(psb_ipk_), intent(out)               :: info
+  integer(psb_ipk_), intent(in), optional      :: iout
+  logical, intent(in), optional                :: coarse
+  character(len=*), intent(in), optional       :: prefix
+      
   ! Local variables
   integer(psb_ipk_)   :: err_act
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: me, np
   character(len=20), parameter :: name='amg_z_mumps_solver_descr'
   integer(psb_ipk_) :: iout_
+  character(1024)    :: prefix_
 
   call psb_erractionsave(err_act)
   info = psb_success_
@@ -337,8 +340,13 @@ subroutine c_mumps_solver_descr(sv,info,iout,coarse)
   else
     iout_ = psb_out_unit
   endif
+  if (present(prefix)) then
+    prefix_ = prefix
+  else
+    prefix_ = ""
+  end if
 
-  write(iout_,*) '  MUMPS  Solver. '
+  write(iout_,*) trim(prefix_), '  MUMPS  Solver. '
 
   call psb_erractionrestore(err_act)
   return

amgprec/amg_c_onelev_mod.f90

@@ -187,8 +187,10 @@ module amg_c_onelev_mod
     procedure, pass(lv) :: clone   => c_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_c_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_c_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_c_base_onelev_memory_use
     procedure, pass(lv) :: default => c_base_onelev_default
     procedure, pass(lv) :: free    => amg_c_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_c_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => c_base_onelev_nullify
     procedure, pass(lv) :: check => amg_c_base_onelev_check
     procedure, pass(lv) :: dump  => amg_c_base_onelev_dump
@@ -257,7 +259,7 @@ module amg_c_onelev_mod
   end interface
 
   interface
-    subroutine amg_c_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
+    subroutine amg_c_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
@@ -268,9 +270,27 @@ module amg_c_onelev_mod
       integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_base_onelev_descr
   end interface
 
+  interface
+    subroutine amg_c_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
+           & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_c_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_c_base_onelev_memory_use
+  end interface
+
   interface
     subroutine amg_c_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_c_onelev_type, psb_c_base_vect_type, psb_spk_, &
@@ -284,7 +304,7 @@ module amg_c_onelev_mod
     end subroutine amg_c_base_onelev_cnv
   end interface
 
-interface
+  interface
     subroutine amg_c_base_onelev_free(lv,info)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
@@ -296,6 +316,18 @@ interface
     end subroutine amg_c_base_onelev_free
   end interface
 
+  interface
+    subroutine amg_c_base_onelev_free_smoothers(lv,info)
+      import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
+           & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_c_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_c_base_onelev_free_smoothers
+  end interface
+
   interface
     subroutine amg_c_base_onelev_check(lv,info)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &

amgprec/amg_c_prec_type.f90

@@ -135,8 +135,11 @@ module amg_c_prec_type
     procedure, pass(prec)               :: build        => amg_cprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_c_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_c_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_c_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_c_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_c_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_cfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_cfile_prec_memory_use
   end type amg_cprec_type
 
   private :: amg_c_dump, amg_c_get_compl,  amg_c_cmp_compl,&
@@ -155,18 +158,35 @@ module amg_c_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_cfile_prec_descr(prec,info,iout,root,verbosity)
+    subroutine amg_cfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_cprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_cprec_type), intent(in)      :: prec
-      integer(psb_ipk_), intent(out) :: info
+      class(amg_cprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_cfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_cfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_cprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_cprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_cfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_cprec_sizeof
   end interface
@@ -344,6 +364,14 @@ module amg_c_prec_type
     end subroutine amg_c_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_c_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_c_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -617,6 +645,68 @@ contains
 
   end subroutine amg_c_prec_free
 
+  subroutine amg_c_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_cprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_c_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_c_smoothers_free
+
+  subroutine amg_c_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_cprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_c_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_c_hierarchy_free
 
 
   !

amgprec/amg_c_slu_solver.F90

@@ -385,20 +385,22 @@ contains
   
   end subroutine c_slu_solver_finalize
 
-  subroutine c_slu_solver_descr(sv,info,iout,coarse)
+  subroutine c_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_c_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_c_symdec_aggregator_mod.f90

@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_c_symdec_aggregator_fmt
   
-  subroutine  amg_c_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_symdec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_symdec_aggregator_descr

amgprec/amg_d_ainv_solver.F90

@@ -58,6 +58,7 @@ module amg_d_ainv_solver
     procedure, pass(sv) :: check   => amg_d_ainv_solver_check
     procedure, pass(sv) :: build   => amg_d_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_d_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_d_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_d_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_d_ainv_solver_csetr
@@ -85,6 +86,16 @@ module amg_d_ainv_solver
     end subroutine amg_d_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_ainv_solver_type), intent(inout) :: sv
+      class(amg_d_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_d_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_d_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -198,7 +209,7 @@ module amg_d_ainv_solver
 !!$  end interface
 
   interface
-    subroutine amg_d_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -208,7 +219,7 @@ module amg_d_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_ainv_solver_descr
   end interface
 

amgprec/amg_d_as_smoother.f90

@@ -396,21 +396,23 @@ contains
   end subroutine d_as_smoother_default
 
 
-  subroutine d_as_smoother_descr(sm,info,iout,coarse)
+  subroutine d_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_d_base_aggregator_mod.f90

@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_d_base_aggregator_xt_desc
 
-  subroutine  amg_d_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_base_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_base_aggregator_descr

amgprec/amg_d_base_smoother_mod.f90

@@ -272,7 +272,7 @@ module amg_d_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_d_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
            & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
            & amg_d_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_d_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_d_base_smoother_descr
   end interface
   

amgprec/amg_d_base_solver_mod.f90

@@ -270,7 +270,7 @@ module amg_d_base_solver_mod
   end interface
   
   interface
-    subroutine amg_d_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
            & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
            & amg_d_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_d_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_d_base_solver_descr
   end interface 
   

amgprec/amg_d_dec_aggregator_mod.f90

@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_d_dec_aggregator_fmt
   
-  subroutine  amg_d_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_dec_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_dec_aggregator_descr

amgprec/amg_d_diag_solver.f90

@@ -219,7 +219,7 @@ contains
 
   end subroutine d_diag_solver_free
 
-  subroutine d_diag_solver_descr(sv,info,iout,coarse)
+  subroutine d_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_d_l1_diag_solver
   
 contains
 
-  subroutine d_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine d_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_d_gs_solver.f90

@@ -433,20 +433,22 @@ contains
     return
   end subroutine d_gs_solver_free
 
-  subroutine d_gs_solver_descr(sv,info,iout,coarse)
+  subroutine d_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function d_gs_solver_is_iterative
     
-  subroutine d_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine d_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_d_id_solver.f90

@@ -157,7 +157,7 @@ contains
     return
   end subroutine d_id_solver_free
 
-  subroutine d_id_solver_descr(sv,info,iout,coarse)
+  subroutine d_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_d_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_d_ilu_solver.f90

@@ -234,7 +234,7 @@ contains
     ! Arguments
     class(amg_d_ilu_solver_type), intent(inout) :: sv
 
-    sv%fact_type = psb_ilu_n_
+    sv%fact_type = amg_ilu_n_
     sv%fill_in   = 0
     sv%thresh    = dzero
 
@@ -255,13 +255,13 @@ contains
     info = psb_success_
 
     call amg_check_def(sv%fact_type,&
-         & 'Factorization',psb_ilu_n_,is_legal_ilu_fact)
+         & 'Factorization',amg_ilu_n_,is_legal_ilu_fact)
 
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
+    case(amg_ilu_n_,amg_milu_n_)      
       call amg_check_def(sv%fill_in,&
            & 'Level',izero,is_int_non_negative)
-    case(psb_ilu_t_)                 
+    case(amg_ilu_t_)                 
       call amg_check_def(sv%thresh,&
            & 'Eps',dzero,is_legal_d_fact_thrs)
     end select
@@ -406,7 +406,7 @@ contains
     return
   end subroutine d_ilu_solver_free
 
-  subroutine d_ilu_solver_descr(sv,info,iout,coarse)
+  subroutine d_ilu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -414,12 +414,14 @@ contains
     class(amg_d_ilu_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
-
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
+      
     ! Local variables
     integer(psb_ipk_) :: err_act
     character(len=20), parameter :: name='amg_d_ilu_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -428,15 +430,20 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout_,*) '  Incomplete factorization solver: ',&
+    write(iout_,*) trim(prefix_), '  Incomplete factorization solver: ',&
          &  amg_fact_names(sv%fact_type)
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
-      write(iout_,*) '  Fill level:',sv%fill_in
-    case(psb_ilu_t_)         
-      write(iout_,*) '  Fill level:',sv%fill_in
-      write(iout_,*) '  Fill threshold :',sv%thresh
+    case(amg_ilu_n_,amg_milu_n_)      
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+    case(amg_ilu_t_)         
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+      write(iout_,*) trim(prefix_), '  Fill threshold :',sv%thresh
     end select
 
     call psb_erractionrestore(err_act)
@@ -489,7 +496,7 @@ contains
     implicit none 
     integer(psb_ipk_)  :: val
     
-    val = psb_ilu_n_
+    val = amg_ilu_n_
   end function d_ilu_solver_get_id
 
   function d_ilu_solver_get_wrksize() result(val)

amgprec/amg_d_inner_mod.f90

@@ -109,11 +109,12 @@ module amg_d_inner_mod
   end interface amg_map_to_tprol
 
   abstract interface
-    subroutine amg_daggrmat_var_bld(a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_daggrmat_var_bld(dol1smoothing,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: psb_dspmat_type, psb_desc_type, psb_dpk_, psb_ipk_, psb_lpk_, psb_ldspmat_type
       import ::  amg_d_onelev_type, amg_dml_parms
       implicit none 
+      integer(psb_ipk_), intent(in)               :: dol1smoothing
       type(psb_dspmat_type), intent(in)         :: a
       type(psb_desc_type), intent(inout)          :: desc_a
       integer(psb_lpk_), intent(inout)            :: ilaggr(:), nlaggr(:)

amgprec/amg_d_invk_solver.f90

@@ -52,6 +52,7 @@ module amg_d_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_d_invk_solver_check
     procedure, pass(sv) :: clone   => amg_d_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_d_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_d_invk_solver_cseti
     procedure, pass(sv) :: descr   => amg_d_invk_solver_descr
@@ -73,6 +74,17 @@ module amg_d_invk_solver
     end subroutine amg_d_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_invk_solver_type), intent(inout) :: sv
+      class(amg_d_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_d_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_d_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
@@ -123,7 +135,7 @@ module amg_d_invk_solver
   end interface
 
   interface
-    subroutine amg_d_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -133,7 +145,7 @@ module amg_d_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_invk_solver_descr
   end interface
 

amgprec/amg_d_invt_solver.f90

@@ -52,6 +52,7 @@ module amg_d_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_d_invt_solver_check
     procedure, pass(sv) :: clone   => amg_d_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_d_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_d_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_d_invt_solver_csetr
@@ -73,6 +74,17 @@ module amg_d_invt_solver
     end subroutine amg_d_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_invt_solver_type), intent(inout) :: sv
+      class(amg_d_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_d_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_d_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
@@ -134,16 +146,17 @@ module amg_d_invt_solver
   end interface
 
   interface
-    subroutine amg_d_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_d_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_d_invt_solver_descr
   end interface

amgprec/amg_d_jac_smoother.f90

@@ -203,8 +203,8 @@ module amg_d_jac_smoother
     subroutine amg_d_jac_smoother_clone_settings(sm,smout,info)
       import :: amg_d_jac_smoother_type, psb_dpk_, &
            & amg_d_base_smoother_type, psb_ipk_
-      class(amg_d_jac_smoother_type), intent(inout)               :: sm
-      class(amg_d_base_smoother_type), allocatable, intent(inout) :: smout
+      class(amg_d_jac_smoother_type), intent(inout)  :: sm
+      class(amg_d_base_smoother_type), intent(inout) :: smout
       integer(psb_ipk_), intent(out)                :: info
     end subroutine amg_d_jac_smoother_clone_settings
   end interface
@@ -219,12 +219,13 @@ module amg_d_jac_smoother
   end interface
 
   interface
-    subroutine amg_d_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_d_jac_smoother_type, psb_ipk_
       class(amg_d_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_d_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_d_jac_smoother
   end interface
 
   interface
-    subroutine amg_d_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_d_l1_jac_smoother_type, psb_ipk_
       class(amg_d_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_d_l1_jac_smoother_descr
   end interface
 

amgprec/amg_d_jac_solver.f90

@@ -0,0 +1,585 @@
+!  
+!   
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante        
+!   
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!   
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!   
+!  
+!
+!
+! File: amg_d_jac_solver_mod.f90
+!
+! Module: amg_d_jac_solver_mod
+!
+!  This module defines: 
+!  - the amg_d_jac_solver_type data structure containing the ingredients
+!    for a local Jacobi  iteration. The iterations are local to a process
+!    (they operate on the block diagonal).
+!    
+!
+module amg_d_jac_solver
+
+  use amg_d_base_solver_mod
+
+  type, extends(amg_d_base_solver_type) :: amg_d_jac_solver_type
+    type(psb_dspmat_type)      :: a
+    type(psb_d_vect_type), allocatable :: dv
+    real(psb_dpk_), allocatable        :: d(:)
+    integer(psb_ipk_)          :: sweeps
+    real(psb_dpk_)             :: eps
+  contains
+    procedure, pass(sv) :: dump    => amg_d_jac_solver_dmp
+    procedure, pass(sv) :: check   => d_jac_solver_check
+    procedure, pass(sv) :: clone   => amg_d_jac_solver_clone
+    procedure, pass(sv) :: clone_settings => amg_d_jac_solver_clone_settings
+    procedure, pass(sv) :: clear_data     => amg_d_jac_solver_clear_data
+    procedure, pass(sv) :: build   => amg_d_jac_solver_bld
+    procedure, pass(sv) :: cnv     => amg_d_jac_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_d_jac_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_d_jac_solver_apply
+    procedure, pass(sv) :: free    => d_jac_solver_free
+    procedure, pass(sv) :: cseti   => d_jac_solver_cseti
+    procedure, pass(sv) :: csetc   => d_jac_solver_csetc
+    procedure, pass(sv) :: csetr   => d_jac_solver_csetr
+    procedure, pass(sv) :: descr   => d_jac_solver_descr
+    procedure, pass(sv) :: default => d_jac_solver_default
+    procedure, pass(sv) :: sizeof  => d_jac_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => d_jac_solver_get_nzeros
+    procedure, nopass   :: get_wrksz  => d_jac_solver_get_wrksize
+    procedure, nopass   :: get_fmt    => d_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => d_jac_solver_get_id
+    procedure, nopass   :: is_iterative => d_jac_solver_is_iterative
+  end type amg_d_jac_solver_type
+
+  type, extends(amg_d_jac_solver_type) :: amg_d_l1_jac_solver_type
+  contains
+    procedure, pass(sv) :: build   => amg_d_l1_jac_solver_bld
+    procedure, pass(sv) :: descr   => d_l1_jac_solver_descr
+    procedure, nopass   :: get_fmt    => d_l1_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => d_l1_jac_solver_get_id
+  end type amg_d_l1_jac_solver_type
+
+
+  private :: d_jac_solver_bld, d_jac_solver_apply, &
+       &  d_jac_solver_free,   &
+       &  d_jac_solver_descr,  d_jac_solver_sizeof, &
+       &  d_jac_solver_default, d_jac_solver_dmp, &
+       &  d_jac_solver_apply_vect, d_jac_solver_get_nzeros, &
+       &  d_jac_solver_get_fmt, d_jac_solver_check,&
+       &  d_jac_solver_is_iterative, &
+       &  d_jac_solver_get_id, d_jac_solver_get_wrksize
+
+  interface 
+    subroutine amg_d_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+         & trans,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_d_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)             :: desc_data
+      class(amg_d_jac_solver_type), intent(inout) :: sv
+      type(psb_d_vect_type),intent(inout)         :: x
+      type(psb_d_vect_type),intent(inout)         :: y
+      real(psb_dpk_),intent(in)                    :: alpha,beta
+      character(len=1),intent(in)                   :: trans
+      real(psb_dpk_),target, intent(inout)         :: work(:)
+      type(psb_d_vect_type),intent(inout)         :: wv(:)
+      integer(psb_ipk_), intent(out)                :: info
+      character, intent(in), optional                :: init
+      type(psb_d_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_d_jac_solver_apply_vect
+  end interface
+
+  interface 
+    subroutine amg_d_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info,init,initu)
+      import :: psb_desc_type, amg_d_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)      :: desc_data
+      class(amg_d_jac_solver_type), intent(inout) :: sv
+      real(psb_dpk_),intent(inout)         :: x(:)
+      real(psb_dpk_),intent(inout)         :: y(:)
+      real(psb_dpk_),intent(in)            :: alpha,beta
+      character(len=1),intent(in)           :: trans
+      real(psb_dpk_),target, intent(inout) :: work(:)
+      integer(psb_ipk_), intent(out)        :: info
+      character, intent(in), optional       :: init
+      real(psb_dpk_),intent(inout), optional :: initu(:)
+    end subroutine amg_d_jac_solver_apply
+  end interface
+
+  interface 
+    subroutine amg_d_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_d_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_dspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_d_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_dspmat_type), intent(in), target, optional :: b
+      class(psb_d_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_d_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_d_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_d_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_d_l1_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_dspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_d_l1_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_dspmat_type), intent(in), target, optional :: b
+      class(psb_d_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_d_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_d_l1_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_d_jac_solver_cnv(sv,info,amold,vmold,imold)
+      import :: amg_d_jac_solver_type, psb_dpk_, &
+           & psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      class(amg_d_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_d_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_d_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_d_jac_solver_cnv
+  end interface
+  
+  interface 
+    subroutine amg_d_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+      import :: psb_desc_type, amg_d_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, &
+           & psb_ipk_
+      implicit none 
+      class(amg_d_jac_solver_type), intent(in) :: sv
+      type(psb_desc_type), intent(in)             :: desc
+      integer(psb_ipk_), intent(in)              :: level
+      integer(psb_ipk_), intent(out)             :: info
+      character(len=*), intent(in), optional     :: prefix, head
+      logical, optional, intent(in)              :: solver, global_num
+    end subroutine amg_d_jac_solver_dmp
+  end interface
+  
+  interface
+    subroutine amg_d_jac_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
+           & amg_d_base_solver_type, amg_d_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_d_jac_solver_type), intent(inout)               :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)              :: info
+    end subroutine amg_d_jac_solver_clone
+  end interface
+  
+!!$  interface
+!!$    subroutine amg_d_l1_jac_solver_clone(sv,svout,info)
+!!$      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+!!$           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
+!!$           & amg_d_base_solver_type, amg_d_l1_jac_solver_type, psb_ipk_
+!!$      Implicit None
+!!$      
+!!$      ! Arguments
+!!$      class(amg_d_l1_jac_solver_type), intent(inout)               :: sv
+!!$      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+!!$      integer(psb_ipk_), intent(out)              :: info
+!!$    end subroutine amg_d_l1_jac_solver_clone
+!!$  end interface
+
+  interface
+    subroutine amg_d_jac_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
+           & amg_d_base_solver_type, amg_d_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_d_jac_solver_type), intent(inout) :: sv
+      class(amg_d_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_d_jac_solver_clone_settings
+  end interface
+
+  interface
+    subroutine amg_d_jac_solver_clear_data(sv,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
+           & amg_d_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_d_jac_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_d_jac_solver_clear_data
+  end interface
+
+contains
+
+  subroutine d_jac_solver_default(sv)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv
+
+    sv%sweeps = ione
+    sv%eps    = dzero
+    
+    return
+  end subroutine d_jac_solver_default
+
+  subroutine d_jac_solver_check(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='d_jac_solver_check'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call amg_check_def(sv%sweeps,&
+         & 'Jacobi sweeps',ione,is_int_positive)
+
+    if (info /= psb_success_) goto 9999
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine d_jac_solver_check
+
+  subroutine d_jac_solver_cseti(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='d_jac_solver_cseti'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+    select case(psb_toupper(what))
+    case('SOLVER_SWEEPS')
+      sv%sweeps = val      
+    case default
+      call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_cseti
+
+  subroutine d_jac_solver_csetc(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv
+    character(len=*), intent(in)                  :: what 
+    character(len=*), intent(in)                  :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, ival
+    character(len=20)  :: name='d_jac_solver_csetc'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+
+    call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
+  
+    if (info /= psb_success_) then
+      info = psb_err_from_subroutine_
+      call psb_errpush(info, name)
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_csetc
+  
+  subroutine d_jac_solver_csetr(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    real(psb_dpk_), intent(in)                     :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='d_jac_solver_csetr'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    select case(psb_toupper(what))
+    case('SOLVER_EPS') 
+      sv%eps = val
+    case default
+      call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_csetr
+
+  subroutine d_jac_solver_free(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='d_jac_solver_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call sv%a%free()
+    if (allocated(sv%dv)) then
+      call sv%dv%free(info)
+      deallocate(sv%dv)
+    end if
+    if (allocated(sv%d)) deallocate(sv%d)
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_free
+
+  subroutine d_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_d_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_descr
+
+  function d_jac_solver_get_nzeros(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+    
+    val = 0 
+    val = val + sv%a%get_nzeros()
+    val = val + sv%dv%get_nrows()
+
+    return
+  end function d_jac_solver_get_nzeros
+
+  function d_jac_solver_sizeof(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = psb_sizeof_ip 
+    val = val + sv%a%sizeof()
+    val = val + sv%dv%sizeof()
+
+    return
+  end function d_jac_solver_sizeof
+
+  function d_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "Jacobi solver"
+  end function d_jac_solver_get_fmt
+
+  function d_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_jac_
+  end function d_jac_solver_get_id
+
+  !
+  ! If this is true, then the solver needs a starting
+  ! guess. Currently only handled in JAC smoother. 
+  ! 
+  function d_jac_solver_is_iterative() result(val)
+    implicit none 
+    logical  :: val
+
+    val = .true.
+  end function d_jac_solver_is_iterative
+    
+  function d_jac_solver_get_wrksize() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = 2
+  end function d_jac_solver_get_wrksize
+
+  subroutine d_l1_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_l1_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_d_l1_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_l1_jac_solver_descr
+
+  function d_l1_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "L1-Jacobi solver"
+  end function d_l1_jac_solver_get_fmt
+
+  function d_l1_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_l1_jac_
+  end function d_l1_jac_solver_get_id
+  
+end module amg_d_jac_solver

amgprec/amg_d_krm_solver.f90

@@ -436,7 +436,7 @@ contains
     val = "KRM solver"
   end function d_krm_solver_get_fmt
 
-  subroutine d_krm_solver_descr(sv,info,iout,coarse)
+  subroutine d_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -444,12 +444,14 @@ contains
     class(amg_d_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -458,23 +460,22 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_d_matchboxp_mod.f90

@@ -143,9 +143,10 @@ contains
     type(psb_ld_coo_sparse_mat) :: tmpcoo
     logical  :: display_out_, print_out_, reproducible_
     logical, parameter  :: dump=.false., debug=.false., dump_mate=.false., &
-         & debug_ilaggr=.false., debug_sync=.false.
+         & debug_ilaggr=.false., debug_sync=.false., debug_mate=.false.
     integer(psb_ipk_), save :: idx_bldmtc=-1, idx_phase1=-1, idx_phase2=-1, idx_phase3=-1
     logical, parameter :: do_timings=.true.
+    integer, parameter :: ilaggr_neginit=-1, ilaggr_nonlocal=-2
 
     ictxt = desc_a%get_ctxt()
     call psb_info(ictxt,iam,np)
@@ -187,7 +188,7 @@ contains
     call desc_a%l2gip(ilv,info,owned=.false.)
 
     call psb_geall(ilaggr,desc_a,info)
-    ilaggr = -1
+    ilaggr = ilaggr_neginit
     call psb_geasb(ilaggr,desc_a,info)
     nr = a%get_nrows()
     nc = a%get_ncols()
@@ -213,7 +214,20 @@ contains
       call psb_barrier(ictxt)
       if (iam == 0) write(0,*)' out from buildmatching:', info
     end if
-
+    if (debug_mate) then
+      block
+        integer(psb_lpk_), allocatable :: ckmate(:)
+        allocate(ckmate(nr))
+        ckmate(1:nr) = mate(1:nr)
+        call psb_msort(ckmate(1:nr))
+        do i=1,nr-1
+          if ((ckmate(i)>0) .and. (ckmate(i) == ckmate(i+1))) then
+            write(0,*) iam,' Duplicate mate entry  at',i,' :',ckmate(i)
+          end if
+        end do
+      end block
+    end if
+     
     if (info == 0) then
       if (do_timings) call psb_tic(idx_phase2)
       if (debug_sync) then
@@ -259,7 +273,7 @@ contains
           cycle
         else
 
-          if (ilaggr(k) == -1) then
+          if (ilaggr(k) == ilaggr_neginit) then
 
             wk   = w(k)
             widx = w(idx)
@@ -267,7 +281,7 @@ contains
             nrmagg = wmax*sqrt((wk/wmax)**2+(widx/wmax)**2)
             if (nrmagg > epsilon(nrmagg)) then
               if (idx <= nr) then
-                if (ilaggr(idx) == -1) then
+                if (ilaggr(idx) == ilaggr_neginit) then
                   ! Now, if both vertices are local, the aggregate is local
                   ! (kinda obvious).
                   nlaggr(iam) = nlaggr(iam) + 1
@@ -275,6 +289,9 @@ contains
                   ilaggr(idx) = nlaggr(iam)
                   wtemp(k)    = w(k)/nrmagg
                   wtemp(idx)  = w(idx)/nrmagg
+                else
+                  write(0,*) iam,' Inconsistent mate? ',k,mate(k),idx,&
+                       &mate(idx),ilaggr(idx)
                 end if
                 nlpairs = nlpairs+1
               else if (idx <= nc) then
@@ -294,7 +311,7 @@ contains
                     ilaggr(k)   = nlaggr(iam)
                     nlpairs = nlpairs+1
                   else
-                    ilaggr(k) = -2
+                    ilaggr(k) = ilaggr_nonlocal
                   end if
                 else
                   ! Use a statistically unbiased tie-breaking rule,
@@ -309,7 +326,7 @@ contains
                     ilaggr(k)   = nlaggr(iam)
                     nlpairs = nlpairs+1
                   else
-                    ilaggr(k) = -2
+                    ilaggr(k) = ilaggr_nonlocal
                   end if
                 end if
               end if
@@ -325,6 +342,12 @@ contains
                 nlsingl     = nlsingl + 1
               end if
             end if
+            if (ilaggr(k) == ilaggr_neginit) then
+              write(0,*) iam,' Error: no update to ',k,mate(k),&
+                   & abs(w(k)),nrmagg,epsilon(nrmagg),wtemp(k)
+            end if
+          else
+            if (ilaggr(k)<0) write(0,*) 'Strange? ',k,ilaggr(k)
           end if
         end if
       end do
@@ -332,7 +355,7 @@ contains
       if (do_timings) call psb_tic(idx_phase3)
 
       ! Ok, now compute offsets, gather halo and fix non-local
-      ! aggregates  (those where ilaggr == -2)
+      ! aggregates  (those where ilaggr == ilaggr_nonlocal)
       call psb_sum(ictxt,nlaggr)
       ntaggr  = sum(nlaggr(0:np-1))
       naggrm1 = sum(nlaggr(0:iam-1))
@@ -347,7 +370,7 @@ contains
       call psb_halo(wtemp,desc_a,info)
       ! Cleanup as yet unmarked entries
       do k=1,nr
-        if (ilaggr(k) == -2) then
+        if (ilaggr(k) == ilaggr_nonlocal) then
           idx = mate(k)
           if (idx > nr) then
             i   = ilaggr(idx)
@@ -359,9 +382,14 @@ contains
           else
             write(0,*) 'Error : unresolved (paired) index ',k,idx,i,nr,nc, ilv(k),ilv(idx)
           end if
-        end if
-        if (ilaggr(k) <0) then
-          write(0,*) 'Matchboxp: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
+        else if (ilaggr(k) <0) then
+          write(0,*) iam,'Matchboxp: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
+          write(0,*) iam,'         :             : ',nr,nc,mate(k)
+          if (mate(k) <= nr) then
+            write(0,*) iam,'         :             : ',ilaggr(mate(k)),mate(mate(k)),&
+                 & ilv(k),ilv(mate(k)), ilv(mate(mate(k))),ilaggr(mate(mate(k)))
+          end if
+          flush(0)
         end if
       end do
       if (debug_sync) then
@@ -414,7 +442,7 @@ contains
 
       end block
       if (iam == 0) then
-        write(0,*) 'Matching statistics: Unmatched nodes ',&
+        write(0,*) iam,'Matching statistics: Unmatched nodes ',&
              & nunmatched,' Singletons:',nlsingl,' Pairs:',nlpairs
       end if
 

amgprec/amg_d_mumps_solver.F90

@@ -78,7 +78,8 @@ module amg_d_mumps_solver
     !
     ! Controls to be set before MUMPS instantiation:
     !
-    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: LOCAL   1==amg_global_solver_: GLOBAL
+    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: 'LOCAL_SOLVER
+    !                            1==amg_global_solver_: 'GLOBAL_SOLVER'
     ! IPAR(2) : MUMPS_PRINT_ERR  print verbosity (see MUMPS)
     ! IPAR(3) : MUMPS_SYM        0: non-symmetric   2: symmetric
     integer(psb_ipk_), dimension(3) :: ipar
@@ -313,22 +314,24 @@ subroutine d_mumps_solver_finalize(sv)
 
 end subroutine d_mumps_solver_finalize
 
-subroutine d_mumps_solver_descr(sv,info,iout,coarse)
+subroutine d_mumps_solver_descr(sv,info,iout,coarse,prefix)
 
   Implicit None
 
   ! Arguments
   class(amg_d_mumps_solver_type), intent(in) :: sv
-  integer(psb_ipk_), intent(out)                     :: info
-  integer(psb_ipk_), intent(in), optional            :: iout
-  logical, intent(in), optional       :: coarse
-
+  integer(psb_ipk_), intent(out)               :: info
+  integer(psb_ipk_), intent(in), optional      :: iout
+  logical, intent(in), optional                :: coarse
+  character(len=*), intent(in), optional       :: prefix
+      
   ! Local variables
   integer(psb_ipk_)   :: err_act
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: me, np
   character(len=20), parameter :: name='amg_z_mumps_solver_descr'
   integer(psb_ipk_) :: iout_
+  character(1024)    :: prefix_
 
   call psb_erractionsave(err_act)
   info = psb_success_
@@ -337,8 +340,13 @@ subroutine d_mumps_solver_descr(sv,info,iout,coarse)
   else
     iout_ = psb_out_unit
   endif
+  if (present(prefix)) then
+    prefix_ = prefix
+  else
+    prefix_ = ""
+  end if
 
-  write(iout_,*) '  MUMPS  Solver. '
+  write(iout_,*) trim(prefix_), '  MUMPS  Solver. '
 
   call psb_erractionrestore(err_act)
   return

amgprec/amg_d_onelev_mod.f90

@@ -188,8 +188,10 @@ module amg_d_onelev_mod
     procedure, pass(lv) :: clone   => d_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_d_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_d_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_d_base_onelev_memory_use
     procedure, pass(lv) :: default => d_base_onelev_default
     procedure, pass(lv) :: free    => amg_d_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_d_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => d_base_onelev_nullify
     procedure, pass(lv) :: check => amg_d_base_onelev_check
     procedure, pass(lv) :: dump  => amg_d_base_onelev_dump
@@ -258,7 +260,7 @@ module amg_d_onelev_mod
   end interface
 
   interface
-    subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
+    subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
@@ -269,9 +271,27 @@ module amg_d_onelev_mod
       integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_base_onelev_descr
   end interface
 
+  interface
+    subroutine amg_d_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_d_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_d_base_onelev_memory_use
+  end interface
+
   interface
     subroutine amg_d_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_d_onelev_type, psb_d_base_vect_type, psb_dpk_, &
@@ -285,7 +305,7 @@ module amg_d_onelev_mod
     end subroutine amg_d_base_onelev_cnv
   end interface
 
-interface
+  interface
     subroutine amg_d_base_onelev_free(lv,info)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
@@ -297,6 +317,18 @@ interface
     end subroutine amg_d_base_onelev_free
   end interface
 
+  interface
+    subroutine amg_d_base_onelev_free_smoothers(lv,info)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_d_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_base_onelev_free_smoothers
+  end interface
+
   interface
     subroutine amg_d_base_onelev_check(lv,info)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &

amgprec/amg_d_parmatch_aggregator_mod.F90

@@ -244,11 +244,12 @@ module amg_d_parmatch_aggregator_mod
   end interface
 
   interface
-    subroutine amg_d_parmatch_unsmth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_d_parmatch_unsmth_bld(dol1smoothing,ag,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
            & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
       implicit none
+      integer(psb_ipk_), intent(in) :: dol1smoothing
       class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
       type(psb_dspmat_type), intent(in)       :: a
       type(psb_desc_type), intent(inout)      :: desc_a
@@ -262,11 +263,12 @@ module amg_d_parmatch_aggregator_mod
   end interface
 
   interface
-    subroutine amg_d_parmatch_smth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_d_parmatch_smth_bld(dol1smoothing,ag,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
            & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
       implicit none
+      integer(psb_ipk_), intent(in) :: dol1smoothing
       class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
       type(psb_dspmat_type), intent(in)       :: a
       type(psb_desc_type), intent(inout)      :: desc_a
@@ -390,18 +392,25 @@ contains
 
   end function amg_d_parmatch_aggregator_sizeof
 
-  subroutine  amg_d_parmatch_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_parmatch_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none
     class(amg_d_parmatch_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Parallel Matching Aggregator'
-    write(iout,*) '   Number of matching  sweeps: ',ag%n_sweeps
-    write(iout,*) '   Matching algorithm         : MatchBoxP (PREIS)'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Parallel Matching Aggregator'
+    write(iout,*) trim(prefix_),' ','   Number of matching  sweeps: ',ag%n_sweeps
+    write(iout,*) trim(prefix_),' ','   Matching algorithm         : MatchBoxP (PREIS)'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
 
     return
   end subroutine amg_d_parmatch_aggregator_descr

amgprec/amg_d_poly_coeff_mod.f90

@@ -0,0 +1,548 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_d_poly_smoother_mod.f90
+!
+! Module: amg_d_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_d_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_d_poly_coeff_mod
+  use psb_base_mod
+
+  real(psb_dpk_), parameter :: amg_d_poly_a_vect(30) = [ &
+       & 0.3333333333333333_psb_dpk_, &
+       & 0.1805359927403007_psb_dpk_, &
+       & 0.1159278464862213_psb_dpk_, &
+       & 0.0820780659590383_psb_dpk_, &
+       & 0.0618496002413377_psb_dpk_, &
+       & 0.0486605823426062_psb_dpk_, &
+       & 0.0395132986024057_psb_dpk_, &
+       & 0.0328701017544880_psb_dpk_, &
+       & 0.0278702862721800_psb_dpk_, &
+       & 0.0239987409600620_psb_dpk_, &
+       & 0.0209304400432259_psb_dpk_, &
+       & 0.0184513099045066_psb_dpk_, &
+       & 0.0164152586042591_psb_dpk_, &
+       & 0.0147195638076874_psb_dpk_, &
+       & 0.0132901324757843_psb_dpk_, &
+       & 0.0120723317737698_psb_dpk_, &
+       & 0.0110250964606384_psb_dpk_, &
+       & 0.0101170330064859_psb_dpk_, &
+       & 0.0093237789039835_psb_dpk_, &
+       & 0.0086261728849515_psb_dpk_, &
+       & 0.0080089618703679_psb_dpk_, &
+       & 0.0074598709610601_psb_dpk_, &
+       & 0.0069689238144320_psb_dpk_, &
+       & 0.0065279387776372_psb_dpk_, &
+       & 0.0061301503808627_psb_dpk_, &
+       & 0.0057699215598864_psb_dpk_, &
+       & 0.0054425224281914_psb_dpk_, &
+       & 0.0051439584672521_psb_dpk_, &
+       & 0.0048708358327268_psb_dpk_, &
+       & 0.0046202548314912_psb_dpk_ ];
+  
+  real(psb_dpk_), parameter :: amg_d_poly_beta_vect(900) = [ &
+       & 1.1250000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0238728757031315_psb_dpk_, 1.2640890537108553_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0084254478202830_psb_dpk_, 1.0886783920873087_psb_dpk_, &
+       & 1.3375312590961856_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0039131042728535_psb_dpk_, 1.0403581118859304_psb_dpk_, &
+       & 1.1486349854625493_psb_dpk_, 1.3826886924100055_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0021293014616472_psb_dpk_, 1.0217371154926094_psb_dpk_, &
+       & 1.0787243319260302_psb_dpk_, 1.1981006529266300_psb_dpk_, &
+       & 1.4132254279168215_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0012851725594023_psb_dpk_, 1.0130429303523338_psb_dpk_, &
+       & 1.0467821512411335_psb_dpk_, 1.1161648941967548_psb_dpk_, &
+       & 1.2382902021844453_psb_dpk_, 1.4352429710674484_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0008346439791242_psb_dpk_, 1.0084394943012289_psb_dpk_, &
+       & 1.0300870776871385_psb_dpk_, 1.0740838409200377_psb_dpk_, &
+       & 1.1503618670736642_psb_dpk_, 1.2711647404613990_psb_dpk_, &
+       & 1.4518665864936395_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0005724663119766_psb_dpk_, 1.0057742766241562_psb_dpk_, &
+       & 1.0205018792294143_psb_dpk_, 1.0501980344456543_psb_dpk_, &
+       & 1.1011557298494106_psb_dpk_, 1.1808604280685657_psb_dpk_, &
+       & 1.2983858538257604_psb_dpk_, 1.4648607315109978_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0004096007283281_psb_dpk_, 1.0041243950610661_psb_dpk_, &
+       & 1.0146021214826659_psb_dpk_, 1.0356111362667175_psb_dpk_, &
+       & 1.0713997252919425_psb_dpk_, 1.1268827371096291_psb_dpk_, &
+       & 1.2078521914072933_psb_dpk_, 1.3212193071674674_psb_dpk_, &
+       & 1.4752964282069962_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0003031222965291_psb_dpk_, 1.0030484066079688_psb_dpk_, &
+       & 1.0107702271538761_psb_dpk_, 1.0261901159764004_psb_dpk_, &
+       & 1.0523172493375519_psb_dpk_, 1.0925574320754976_psb_dpk_, &
+       & 1.1508337666397197_psb_dpk_, 1.2317225087089441_psb_dpk_, &
+       & 1.3406080202445980_psb_dpk_, 1.4838612440701109_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0002305859520939_psb_dpk_, 1.0023167502402850_psb_dpk_, &
+       & 1.0081724539630488_psb_dpk_, 1.0198298656634219_psb_dpk_, &
+       & 1.0395021023532465_psb_dpk_, 1.0696504270054137_psb_dpk_, &
+       & 1.1130575429574259_psb_dpk_, 1.1729087627556418_psb_dpk_, &
+       & 1.2528830057679230_psb_dpk_, 1.3572557991951903_psb_dpk_, &
+       & 1.4910167256413891_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0001794720082837_psb_dpk_, 1.0018018913961957_psb_dpk_, &
+       & 1.0063486190730762_psb_dpk_, 1.0153786456630600_psb_dpk_, &
+       & 1.0305694283076039_psb_dpk_, 1.0537601969394355_psb_dpk_, &
+       & 1.0869986259207296_psb_dpk_, 1.1325918309791341_psb_dpk_, &
+       & 1.1931627335817252_psb_dpk_, 1.2717129367511055_psb_dpk_, &
+       & 1.3716933796979953_psb_dpk_, 1.4970841857556243_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0001424192155957_psb_dpk_, 1.0014290693262966_psb_dpk_, &
+       & 1.0050302898629815_psb_dpk_, 1.0121691051849540_psb_dpk_, &
+       & 1.0241487434279255_psb_dpk_, 1.0423815888082042_psb_dpk_, &
+       & 1.0684200812870084_psb_dpk_, 1.1039901093675994_psb_dpk_, &
+       & 1.1510274824264566_psb_dpk_, 1.2117181191012512_psb_dpk_, &
+       & 1.2885426486512805_psb_dpk_, 1.3843261938099158_psb_dpk_, &
+       & 1.5022941875736890_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0001149053826193_psb_dpk_, 1.0011524637691460_psb_dpk_, &
+       & 1.0040535733326481_psb_dpk_, 1.0097959057315313_psb_dpk_, &
+       & 1.0194130047299461_psb_dpk_, 1.0340142503543679_psb_dpk_, &
+       & 1.0548059960662932_psb_dpk_, 1.0831142030181304_psb_dpk_, &
+       & 1.1204089166089239_psb_dpk_, 1.1683309565544606_psb_dpk_, &
+       & 1.2287212228823874_psb_dpk_, 1.3036530570781755_psb_dpk_, &
+       & 1.3954681405367855_psb_dpk_, 1.5068164620958386_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000940475075257_psb_dpk_, 1.0009429169634352_psb_dpk_, &
+       & 1.0033144905644482_psb_dpk_, 1.0080029483381612_psb_dpk_, &
+       & 1.0158423625914039_psb_dpk_, 1.0277208331770495_psb_dpk_, &
+       & 1.0445953542283146_psb_dpk_, 1.0675076120612534_psb_dpk_, &
+       & 1.0976009254588965_psb_dpk_, 1.1361385536615733_psb_dpk_, &
+       & 1.1845236142623621_psb_dpk_, 1.2443208730447588_psb_dpk_, &
+       & 1.3172806908339272_psb_dpk_, 1.4053654389356023_psb_dpk_, &
+       & 1.5107787250184523_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000779482817921_psb_dpk_, 1.0007812684725339_psb_dpk_, &
+       & 1.0027448797440124_psb_dpk_, 1.0066229101701514_psb_dpk_, &
+       & 1.0130985883697137_psb_dpk_, 1.0228944832933697_psb_dpk_, &
+       & 1.0367832140998394_psb_dpk_, 1.0555987571989653_psb_dpk_, &
+       & 1.0802484840556024_psb_dpk_, 1.1117260713149764_psb_dpk_, &
+       & 1.1511254343107276_psb_dpk_, 1.1996558461497355_psb_dpk_, &
+       & 1.2586584174494597_psb_dpk_, 1.3296241265666493_psb_dpk_, &
+       & 1.4142136069557629_psb_dpk_, 1.5142789173034623_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000653242183546_psb_dpk_, 1.0006545722939437_psb_dpk_, &
+       & 1.0022987777448662_psb_dpk_, 1.0055432691173583_psb_dpk_, &
+       & 1.0109550075016893_psb_dpk_, 1.0191301541168694_psb_dpk_, &
+       & 1.0307019481191382_psb_dpk_, 1.0463489778000818_psb_dpk_, &
+       & 1.0668039321569163_psb_dpk_, 1.0928629244731740_psb_dpk_, &
+       & 1.1253954850882542_psb_dpk_, 1.1653553270075827_psb_dpk_, &
+       & 1.2137919954743157_psb_dpk_, 1.2718635211544003_psb_dpk_, &
+       & 1.3408502062615073_psb_dpk_, 1.4221696838526183_psb_dpk_, &
+       & 1.5173934027630227_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000552858792859_psb_dpk_, 1.0005538659610900_psb_dpk_, &
+       & 1.0019444166743086_psb_dpk_, 1.0046864301776393_psb_dpk_, &
+       & 1.0092557508630260_psb_dpk_, 1.0161502674772371_psb_dpk_, &
+       & 1.0258958148322650_psb_dpk_, 1.0390523408953256_psb_dpk_, &
+       & 1.0562203973533295_psb_dpk_, 1.0780480145522537_psb_dpk_, &
+       & 1.1052380250439366_psb_dpk_, 1.1385559038570177_psb_dpk_, &
+       & 1.1788381980793483_psb_dpk_, 1.2270016234308427_psb_dpk_, &
+       & 1.2840529112630572_psb_dpk_, 1.3510994958895055_psb_dpk_, &
+       & 1.4293611393851839_psb_dpk_, 1.5201825990516680_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000472036358790_psb_dpk_, 1.0004728102642675_psb_dpk_, &
+       & 1.0016593577469159_psb_dpk_, 1.0039976891368516_psb_dpk_, &
+       & 1.0078911941833455_psb_dpk_, 1.0137601583069535_psb_dpk_, &
+       & 1.0220462561721002_psb_dpk_, 1.0332172281153209_psb_dpk_, &
+       & 1.0477717791157513_psb_dpk_, 1.0662447417325256_psb_dpk_, &
+       & 1.0892125464929936_psb_dpk_, 1.1172990456131733_psb_dpk_, &
+       & 1.1511817386833911_psb_dpk_, 1.1915984520803475_psb_dpk_, &
+       & 1.2393545273929878_psb_dpk_, 1.2953305781018039_psb_dpk_, &
+       & 1.3604908781568688_psb_dpk_, 1.4358924509939206_psb_dpk_, &
+       & 1.5226949329440265_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000406232569254_psb_dpk_, 1.0004068351374691_psb_dpk_, &
+       & 1.0014274431564170_psb_dpk_, 1.0034377175807407_psb_dpk_, &
+       & 1.0067826854070978_psb_dpk_, 1.0118204999571436_psb_dpk_, &
+       & 1.0189259121271075_psb_dpk_, 1.0284938700470616_psb_dpk_, &
+       & 1.0409432748132981_psb_dpk_, 1.0567209210598594_psb_dpk_, &
+       & 1.0763056524407055_psb_dpk_, 1.1002127636100871_psb_dpk_, &
+       & 1.1289986820268283_psb_dpk_, 1.1632659648787138_psb_dpk_, &
+       & 1.2036686486408621_psb_dpk_, 1.2509179912601627_psb_dpk_, &
+       & 1.3057886497146727_psb_dpk_, 1.3691253387497200_psb_dpk_, &
+       & 1.4418500199624611_psb_dpk_, 1.5249696741164267_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000352114440929_psb_dpk_, 1.0003525892395289_psb_dpk_, &
+       & 1.0012368357172980_psb_dpk_, 1.0029777430511673_psb_dpk_, &
+       & 1.0058727830027672_psb_dpk_, 1.0102297507781717_psb_dpk_, &
+       & 1.0163694815733537_psb_dpk_, 1.0246286588536329_psb_dpk_, &
+       & 1.0353627340015590_psb_dpk_, 1.0489489776835172_psb_dpk_, &
+       & 1.0657896841306789_psb_dpk_, 1.0863155505114006_psb_dpk_, &
+       & 1.1109892546943501_psb_dpk_, 1.1403092559728156_psb_dpk_, &
+       & 1.1748138447471401_psb_dpk_, 1.2150854687543668_psb_dpk_, &
+       & 1.2617553651999671_psb_dpk_, 1.3155085300984379_psb_dpk_, &
+       & 1.3770890582780710_psb_dpk_, 1.4473058898645985_psb_dpk_, &
+       & 1.5270390016420912_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000307198714835_psb_dpk_, 1.0003075769178242_psb_dpk_, &
+       & 1.0010787281022711_psb_dpk_, 1.0025963829693492_psb_dpk_, &
+       & 1.0051188625231162_psb_dpk_, 1.0089126974249720_psb_dpk_, &
+       & 1.0142547789760521_psb_dpk_, 1.0214345766593154_psb_dpk_, &
+       & 1.0307564364069204_psb_dpk_, 1.0425419742322541_psb_dpk_, &
+       & 1.0571325804249445_psb_dpk_, 1.0748920501551993_psb_dpk_, &
+       & 1.0962093570737961_psb_dpk_, 1.1215015873309027_psb_dpk_, &
+       & 1.1512170523743910_psb_dpk_, 1.1858385999327761_psb_dpk_, &
+       & 1.2258871437439198_psb_dpk_, 1.2719254338660289_psb_dpk_, &
+       & 1.3245620908078453_psb_dpk_, 1.3844559282498121_psb_dpk_, &
+       & 1.4523205908039656_psb_dpk_, 1.5289295350887884_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000269609460124_psb_dpk_, 1.0002699137181752_psb_dpk_, &
+       & 1.0009464748475532_psb_dpk_, 1.0022775198638552_psb_dpk_, &
+       & 1.0044888368184179_psb_dpk_, 1.0078128087804721_psb_dpk_, &
+       & 1.0124901352066715_psb_dpk_, 1.0187716022931539_psb_dpk_, &
+       & 1.0269199126829005_psb_dpk_, 1.0372115852204526_psb_dpk_, &
+       & 1.0499389358225151_psb_dpk_, 1.0654121509688057_psb_dpk_, &
+       & 1.0839614658147161_psb_dpk_, 1.1059394594887115_psb_dpk_, &
+       & 1.1317234807654135_psb_dpk_, 1.1617182180038959_psb_dpk_, &
+       & 1.1963584280123116_psb_dpk_, 1.2361118393501820_psb_dpk_, &
+       & 1.2814822465106404_psb_dpk_, 1.3330128124440397_psb_dpk_, &
+       & 1.3912895979940381_psb_dpk_, 1.4569453380258381_psb_dpk_, &
+       & 1.5306634853375161_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000237911597230_psb_dpk_, 1.0002381585998457_psb_dpk_, &
+       & 1.0008349974382460_psb_dpk_, 1.0020088476285827_psb_dpk_, &
+       & 1.0039582343156432_psb_dpk_, 1.0068870298152559_psb_dpk_, &
+       & 1.0110058445931565_psb_dpk_, 1.0165334547611182_psb_dpk_, &
+       & 1.0236982737890488_psb_dpk_, 1.0327398763510158_psb_dpk_, &
+       & 1.0439105824804926_psb_dpk_, 1.0574771105088172_psb_dpk_, &
+       & 1.0737223076000839_psb_dpk_, 1.0929469670793606_psb_dpk_, &
+       & 1.1154717421787756_psb_dpk_, 1.1416391663018148_psb_dpk_, &
+       & 1.1718157904303341_psb_dpk_, 1.2063944488757254_psb_dpk_, &
+       & 1.2457966652063013_psb_dpk_, 1.2904752108716941_psb_dpk_, &
+       & 1.3409168297942540_psb_dpk_, 1.3976451430108305_psb_dpk_, &
+       & 1.4612237483301715_psb_dpk_, 1.5322595309246121_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000210994601235_psb_dpk_, 1.0002111968041199_psb_dpk_, &
+       & 1.0007403694573151_psb_dpk_, 1.0017808593384865_psb_dpk_, &
+       & 1.0035081686576977_psb_dpk_, 1.0061021720448531_psb_dpk_, &
+       & 1.0097482505685551_psb_dpk_, 1.0146384533048582_psb_dpk_, &
+       & 1.0209726922414943_psb_dpk_, 1.0289599764553270_psb_dpk_, &
+       & 1.0388196916802268_psb_dpk_, 1.0507829315895938_psb_dpk_, &
+       & 1.0650938873538003_psb_dpk_, 1.0820113022982043_psb_dpk_, &
+       & 1.1018099987843295_psb_dpk_, 1.1247824847650900_psb_dpk_, &
+       & 1.1512406478277994_psb_dpk_, 1.1815175449359154_psb_dpk_, &
+       & 1.2159692965153148_psb_dpk_, 1.2549770940040335_psb_dpk_, &
+       & 1.2989493304988182_psb_dpk_, 1.3483238646890843_psb_dpk_, &
+       & 1.4035704288718982_psb_dpk_, 1.4651931924923849_psb_dpk_, &
+       & 1.5337334933563860_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000187989989242_psb_dpk_, 1.0001881567984481_psb_dpk_, &
+       & 1.0006595227084085_psb_dpk_, 1.0015861311895899_psb_dpk_, &
+       & 1.0031239047778964_psb_dpk_, 1.0054323694760092_psb_dpk_, &
+       & 1.0086755868504005_psb_dpk_, 1.0130231071421940_psb_dpk_, &
+       & 1.0186509477893992_psb_dpk_, 1.0257426018654052_psb_dpk_, &
+       & 1.0344900810652515_psb_dpk_, 1.0450949980170887_psb_dpk_, &
+       & 1.0577696928624343_psb_dpk_, 1.0727384092356933_psb_dpk_, &
+       & 1.0902385249817814_psb_dpk_, 1.1105218431816117_psb_dpk_, &
+       & 1.1338559493090710_psb_dpk_, 1.1605256406217599_psb_dpk_, &
+       & 1.1908344341913664_psb_dpk_, 1.2251061603103259_psb_dpk_, &
+       & 1.2636866483695495_psb_dpk_, 1.3069455126904677_psb_dpk_, &
+       & 1.3552780462128098_psb_dpk_, 1.4091072303921326_psb_dpk_, &
+       & 1.4688858701459975_psb_dpk_, 1.5350988632115488_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000168211938973_psb_dpk_, 1.0001683505351420_psb_dpk_, &
+       & 1.0005900360142315_psb_dpk_, 1.0014188084960041_psb_dpk_, &
+       & 1.0027938311393803_psb_dpk_, 1.0048572584314193_psb_dpk_, &
+       & 1.0077550080990554_psb_dpk_, 1.0116375492127350_psb_dpk_, &
+       & 1.0166607098595459_psb_dpk_, 1.0229865078405374_psb_dpk_, &
+       & 1.0307840079371537_psb_dpk_, 1.0402302093961155_psb_dpk_, &
+       & 1.0515109674005423_psb_dpk_, 1.0648219524284319_psb_dpk_, &
+       & 1.0803696515480321_psb_dpk_, 1.0983724158638981_psb_dpk_, &
+       & 1.1190615585080472_psb_dpk_, 1.1426825077681895_psb_dpk_, &
+       & 1.1694960201606786_psb_dpk_, 1.1997794584895700_psb_dpk_, &
+       & 1.2338281401870808_psb_dpk_, 1.2719567615042522_psb_dpk_, &
+       & 1.3145009034164739_psb_dpk_, 1.3618186254259919_psb_dpk_, &
+       & 1.4142921537855777_psb_dpk_, 1.4723296710339275_psb_dpk_, &
+       & 1.5363672141264497_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000151113991291_psb_dpk_, 1.0001512299115287_psb_dpk_, &
+       & 1.0005299814085029_psb_dpk_, 1.0012742317597600_psb_dpk_, &
+       & 1.0025087130476142_psb_dpk_, 1.0043606572645858_psb_dpk_, &
+       & 1.0069604400315522_psb_dpk_, 1.0104422369100252_psb_dpk_, &
+       & 1.0149446949285030_psb_dpk_, 1.0206116219981500_psb_dpk_, &
+       & 1.0275926969588451_psb_dpk_, 1.0360442030716124_psb_dpk_, &
+       & 1.0461297878595799_psb_dpk_, 1.0580212522952626_psb_dpk_, &
+       & 1.0718993724396861_psb_dpk_, 1.0879547567564958_psb_dpk_, &
+       & 1.1063887424550545_psb_dpk_, 1.1274143343577541_psb_dpk_, &
+       & 1.1512571899424711_psb_dpk_, 1.1781566543781672_psb_dpk_, &
+       & 1.2083668495540898_psb_dpk_, 1.2421578212983135_psb_dpk_, &
+       & 1.2798167491932815_psb_dpk_, 1.3216492236219661_psb_dpk_, &
+       & 1.3679805949228399_psb_dpk_, 1.4191573997915068_psb_dpk_, &
+       & 1.4755488703473389_psb_dpk_, 1.5375485315807513_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000136257096588_psb_dpk_, 1.0001363546506836_psb_dpk_, &
+       & 1.0004778107488095_psb_dpk_, 1.0011486612681773_psb_dpk_, &
+       & 1.0022611433613271_psb_dpk_, 1.0039295964948667_psb_dpk_, &
+       & 1.0062710027404669_psb_dpk_, 1.0094055369479136_psb_dpk_, &
+       & 1.0134571288503909_psb_dpk_, 1.0185540391932908_psb_dpk_, &
+       & 1.0248294520252528_psb_dpk_, 1.0324220853457433_psb_dpk_, &
+       & 1.0414768223656390_psb_dpk_, 1.0521453657079123_psb_dpk_, &
+       & 1.0645869169533493_psb_dpk_, 1.0789688840227822_psb_dpk_, &
+       & 1.0954676189818162_psb_dpk_, 1.1142691889576817_psb_dpk_, &
+       & 1.1355701829701565_psb_dpk_, 1.1595785576006521_psb_dpk_, &
+       & 1.1865145245551894_psb_dpk_, 1.2166114833191515_psb_dpk_, &
+       & 1.2501170022543431_psb_dpk_, 1.2872938516530203_psb_dpk_, &
+       & 1.3284210924391027_psb_dpk_, 1.3737952243949607_psb_dpk_, &
+       & 1.4237313979931023_psb_dpk_, 1.4785646941265451_psb_dpk_, &
+       & 1.5386514762605854_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000123285767939_psb_dpk_, 1.0001233683396147_psb_dpk_, &
+       & 1.0004322711781202_psb_dpk_, 1.0010390719329101_psb_dpk_, &
+       & 1.0020451337350940_psb_dpk_, 1.0035535979966428_psb_dpk_, &
+       & 1.0056698406248343_psb_dpk_, 1.0085019360540697_psb_dpk_, &
+       & 1.0121611307132341_psb_dpk_, 1.0167623275769953_psb_dpk_, &
+       & 1.0224245834847208_psb_dpk_, 1.0292716209515502_psb_dpk_, &
+       & 1.0374323562422998_psb_dpk_, 1.0470414455308106_psb_dpk_, &
+       & 1.0582398510249318_psb_dpk_, 1.0711754290010183_psb_dpk_, &
+       & 1.0860035417614331_psb_dpk_, 1.1028876956049132_psb_dpk_, &
+       & 1.1220002069820316_psb_dpk_, 1.1435228990979547_psb_dpk_, &
+       & 1.1676478313209715_psb_dpk_, 1.1945780638597872_psb_dpk_, &
+       & 1.2245284602839432_psb_dpk_, 1.2577265305821996_psb_dpk_, &
+       & 1.2944133175813315_psb_dpk_, 1.3348443296857557_psb_dpk_, &
+       & 1.3792905230439911_psb_dpk_, 1.4280393364047606_psb_dpk_, &
+       & 1.4813957820911738_psb_dpk_, 1.5396835966986973_psb_dpk_ ]
+
+
+
+
+!!$  [1.1250000000000000_psb_dpk_, 0.0_psb_dpk_, 0.0_psb_dpk__psb_dpk_,,&
+!!$       & 1.0238728757031315_psb_dpk_, 1.2640890537108553_psb_dpk_,  0.0_psb_dpk_,&
+!!$       & 1.0084254478202830_psb_dpk_, 1.0886783920873087_psb_dpk_, 1.3375312590961856_psb_dpk_]
+
+  real(psb_dpk_), parameter  :: amg_d_poly_beta_mat(30,30)=reshape(amg_d_poly_beta_vect,[30,30])
+
+end module amg_d_poly_coeff_mod

amgprec/amg_d_poly_smoother.f90

@@ -0,0 +1,374 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_d_poly_smoother_mod.f90
+!
+! Module: amg_d_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_d_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_d_poly_smoother
+  use amg_d_base_smoother_mod
+  use amg_d_poly_coeff_mod
+  
+  type, extends(amg_d_base_smoother_type) :: amg_d_poly_smoother_type
+    ! The local solver component is inherited from the
+    ! parent type.
+    !    class(amg_d_base_solver_type), allocatable :: sv
+    !
+    integer(psb_ipk_)              :: pdegree, variant
+    integer(psb_ipk_)              :: rho_estimate=amg_poly_rho_est_power_
+    integer(psb_ipk_)              :: rho_estimate_iterations=10
+    type(psb_dspmat_type), pointer :: pa => null()
+    real(psb_dpk_), allocatable    :: poly_beta(:)
+    real(psb_dpk_)                 :: cf_a = dzero
+    real(psb_dpk_)                 :: rho_ba = -done
+  contains
+    procedure, pass(sm) :: apply_v => amg_d_poly_smoother_apply_vect
+!!$    procedure, pass(sm) :: apply_a => amg_d_poly_smoother_apply
+    procedure, pass(sm) :: dump    => amg_d_poly_smoother_dmp
+    procedure, pass(sm) :: build   => amg_d_poly_smoother_bld
+    procedure, pass(sm) :: cnv     => amg_d_poly_smoother_cnv
+    procedure, pass(sm) :: clone   => amg_d_poly_smoother_clone
+    procedure, pass(sm) :: clone_settings => amg_d_poly_smoother_clone_settings
+    procedure, pass(sm) :: clear_data     => amg_d_poly_smoother_clear_data  
+    procedure, pass(sm) :: free    => d_poly_smoother_free
+    procedure, pass(sm) :: cseti   => amg_d_poly_smoother_cseti
+    procedure, pass(sm) :: csetc   => amg_d_poly_smoother_csetc
+    procedure, pass(sm) :: csetr   => amg_d_poly_smoother_csetr
+    procedure, pass(sm) :: descr   => amg_d_poly_smoother_descr
+    procedure, pass(sm) :: sizeof  => d_poly_smoother_sizeof
+    procedure, pass(sm) :: default => d_poly_smoother_default
+    procedure, pass(sm) :: get_nzeros => d_poly_smoother_get_nzeros
+    procedure, pass(sm) :: get_wrksz => d_poly_smoother_get_wrksize
+    procedure, nopass   :: get_fmt    => d_poly_smoother_get_fmt
+    procedure, nopass   :: get_id     => d_poly_smoother_get_id
+  end type amg_d_poly_smoother_type
+  private :: d_poly_smoother_free, &
+       & d_poly_smoother_sizeof,  d_poly_smoother_get_nzeros, &
+       & d_poly_smoother_get_fmt, d_poly_smoother_get_id, &
+       & d_poly_smoother_get_wrksize
+
+
+  interface
+    subroutine amg_d_poly_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
+         & sweeps,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_
+
+      type(psb_desc_type), intent(in)                 :: desc_data
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      type(psb_d_vect_type),intent(inout)           :: x
+      type(psb_d_vect_type),intent(inout)           :: y
+      real(psb_dpk_),intent(in)                      :: alpha,beta
+      character(len=1),intent(in)                     :: trans
+      integer(psb_ipk_), intent(in)                   :: sweeps
+      real(psb_dpk_),target, intent(inout)           :: work(:)
+      type(psb_d_vect_type),intent(inout)           :: wv(:)
+      integer(psb_ipk_), intent(out)                  :: info
+      character, intent(in), optional                :: init
+      type(psb_d_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_d_poly_smoother_apply_vect
+  end interface
+
+!!$  interface
+!!$    subroutine amg_d_poly_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
+!!$         & sweeps,work,info,init,initu)
+!!$      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+!!$           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, &
+!!$           & psb_ipk_
+!!$      type(psb_desc_type), intent(in)      :: desc_data
+!!$      class(amg_d_poly_smoother_type), intent(inout) :: sm
+!!$      real(psb_dpk_),intent(inout)         :: x(:)
+!!$      real(psb_dpk_),intent(inout)         :: y(:)
+!!$      real(psb_dpk_),intent(in)            :: alpha,beta
+!!$      character(len=1),intent(in)           :: trans
+!!$      integer(psb_ipk_), intent(in)         :: sweeps
+!!$      real(psb_dpk_),target, intent(inout) :: work(:)
+!!$      integer(psb_ipk_), intent(out)        :: info
+!!$      character, intent(in), optional       :: init
+!!$      real(psb_dpk_),intent(inout), optional :: initu(:)
+!!$    end subroutine amg_d_poly_smoother_apply
+!!$  end interface
+!!$
+  
+  interface
+    subroutine amg_d_poly_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
+      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      type(psb_dspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_d_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_d_base_sparse_mat), intent(in), optional :: amold
+      class(psb_d_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_d_poly_smoother_bld
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_cnv(sm,info,amold,vmold,imold)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      class(amg_d_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_d_base_sparse_mat), intent(in), optional :: amold
+      class(psb_d_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_d_poly_smoother_cnv
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_dmp(sm,desc,level,info,prefix,head,smoother,solver,global_num)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, &
+           & psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(in) :: sm
+      type(psb_desc_type), intent(in)               :: desc
+      integer(psb_ipk_), intent(in)               :: level
+      integer(psb_ipk_), intent(out)              :: info
+      character(len=*), intent(in), optional :: prefix, head
+      logical, optional, intent(in)    :: smoother, solver, global_num
+    end subroutine amg_d_poly_smoother_dmp
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clone(sm,smout,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout)               :: sm
+      class(amg_d_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clone
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clone_settings(sm,smout,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      class(amg_d_base_smoother_type), intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clone_settings
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clear_data(sm,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout)               :: sm
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clear_data
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_descr(sm,info,iout,coarse,prefix)
+      import :: amg_d_poly_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(in) :: sm
+      integer(psb_ipk_), intent(out)               :: info
+      integer(psb_ipk_), intent(in), optional      :: iout
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
+    end subroutine amg_d_poly_smoother_descr
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_cseti(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      integer(psb_ipk_), intent(in)                  :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_cseti
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_csetc(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      character(len=*), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_csetc
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_csetr(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      real(psb_dpk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_csetr
+  end interface
+
+
+contains
+
+
+  subroutine d_poly_smoother_free(sm,info)
+
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_), intent(out)                  :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20)  :: name='d_poly_smoother_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+
+
+    if (allocated(sm%sv)) then
+      call sm%sv%free(info)
+      if (info == psb_success_) deallocate(sm%sv,stat=info)
+      if (info /= psb_success_) then
+        info = psb_err_alloc_dealloc_
+        call psb_errpush(info,name)
+        goto 9999
+      end if
+    end if
+    if (allocated(sm%poly_beta))  deallocate(sm%poly_beta)
+    sm%pa => null()
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_poly_smoother_free
+
+  function d_poly_smoother_sizeof(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+
+    val = psb_sizeof_dp
+    if (allocated(sm%sv)) val = val + sm%sv%sizeof()
+    if (allocated(sm%poly_beta)) val = val + psb_sizeof_dp * size(sm%poly_beta)
+
+    return
+  end function d_poly_smoother_sizeof
+
+  subroutine d_poly_smoother_default(sm)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+
+    !
+    ! Default: BJAC with no residual check
+    !
+    sm%pdegree      = 1
+    sm%rho_ba       = -done
+    sm%variant      = amg_cheb_4_
+    sm%rho_estimate = amg_poly_rho_est_power_
+    sm%rho_estimate_iterations = 20
+    if (allocated(sm%sv)) then
+      call sm%sv%default()
+    end if
+
+    return
+  end subroutine d_poly_smoother_default
+
+  function d_poly_smoother_get_nzeros(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = 0
+    if (allocated(sm%sv)) val = val + sm%sv%get_nzeros()
+
+    return
+  end function d_poly_smoother_get_nzeros
+
+  function d_poly_smoother_get_wrksize(sm) result(val)
+    implicit none
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_)  :: val
+
+    val = 4
+    if (allocated(sm%sv)) val = val + sm%sv%get_wrksz()
+
+  end function d_poly_smoother_get_wrksize
+
+  function d_poly_smoother_get_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Polynomial smoother"
+  end function d_poly_smoother_get_fmt
+
+  function d_poly_smoother_get_id() result(val)
+    implicit none
+    integer(psb_ipk_)  :: val
+
+    val = amg_poly_
+  end function d_poly_smoother_get_id
+
+
+end module amg_d_poly_smoother

amgprec/amg_d_prec_type.f90

@@ -135,8 +135,11 @@ module amg_d_prec_type
     procedure, pass(prec)               :: build        => amg_dprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_d_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_d_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_d_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_d_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_d_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_dfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_dfile_prec_memory_use
   end type amg_dprec_type
 
   private :: amg_d_dump, amg_d_get_compl,  amg_d_cmp_compl,&
@@ -155,18 +158,35 @@ module amg_d_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_dfile_prec_descr(prec,info,iout,root,verbosity)
+    subroutine amg_dfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_dprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_dprec_type), intent(in)      :: prec
-      integer(psb_ipk_), intent(out) :: info
+      class(amg_dprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_dfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_dfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_dprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_dprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_dfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_dprec_sizeof
   end interface
@@ -344,6 +364,14 @@ module amg_d_prec_type
     end subroutine amg_d_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_d_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_d_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -617,6 +645,68 @@ contains
 
   end subroutine amg_d_prec_free
 
+  subroutine amg_d_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_dprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_d_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_d_smoothers_free
+
+  subroutine amg_d_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_dprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_d_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_d_hierarchy_free
 
 
   !

amgprec/amg_d_slu_solver.F90

@@ -385,20 +385,22 @@ contains
   
   end subroutine d_slu_solver_finalize
 
-  subroutine d_slu_solver_descr(sv,info,iout,coarse)
+  subroutine d_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_d_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_d_sludist_solver.F90

@@ -270,13 +270,13 @@ contains
     ! Local variables
     type(psb_dspmat_type) :: atmp
     type(psb_d_csr_sparse_mat) :: acsr
-    integer(psb_lpk_), allocatable :: gia(:), gja(:)
     type(psb_ctxt_type) :: ctxt
+    integer(psb_lpk_), allocatable :: gia(:), gja(:)
     integer(psb_lpk_) :: lfrst
     integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota, nglob, nzt, npr, npc
     integer(psb_ipk_) :: ifrst, ibcheck
     integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
-    character(len=20) :: name='d_sludist_solver_bld', ch_err
+    character(len=20)  :: name='d_sludist_solver_bld', ch_err
     
     info=psb_success_
     call psb_erractionsave(err_act)
@@ -325,7 +325,6 @@ contains
     acsr%ja(:)  = acsr%ja(:)  - 1
     acsr%irp(:) = acsr%irp(:) - 1
     ifrst = lfrst - 1
-    
     info = amg_dsludist_fact(nglob,nrow_a,nztota,ifrst,&
          & acsr%val,acsr%irp,acsr%ja,sv%lufactors,&
          & npr,npc)
@@ -422,15 +421,16 @@ contains
   
   end subroutine d_sludist_solver_finalize
 
-  subroutine d_sludist_solver_descr(sv,info,iout,coarse)
+  subroutine d_sludist_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_sludist_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                           :: info
+    integer, intent(in), optional                  :: iout
+    logical, intent(in), optional                  :: coarse
+    character(len=*), intent(in), optional         :: prefix
 
     ! Local variables
     integer      :: err_act
@@ -438,6 +438,7 @@ contains
     integer      :: me, np
     character(len=20), parameter :: name='amg_d_sludist_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -446,8 +447,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU_Dist Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU_Dist Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_d_symdec_aggregator_mod.f90

@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_d_symdec_aggregator_fmt
   
-  subroutine  amg_d_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_symdec_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_symdec_aggregator_descr

amgprec/amg_d_umf_solver.F90

@@ -390,20 +390,22 @@ contains
   
   end subroutine d_umf_solver_finalize
 
-  subroutine d_umf_solver_descr(sv,info,iout,coarse)
+  subroutine d_umf_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_umf_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_d_umf_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -412,8 +414,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  UMFPACK Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  UMFPACK Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_s_ainv_solver.F90

@@ -58,6 +58,7 @@ module amg_s_ainv_solver
     procedure, pass(sv) :: check   => amg_s_ainv_solver_check
     procedure, pass(sv) :: build   => amg_s_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_s_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_s_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_s_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_s_ainv_solver_csetr
@@ -85,6 +86,16 @@ module amg_s_ainv_solver
     end subroutine amg_s_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_dpk_, amg_s_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_ainv_solver_type), intent(inout) :: sv
+      class(amg_s_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_s_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_s_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -198,7 +209,7 @@ module amg_s_ainv_solver
 !!$  end interface
 
   interface
-    subroutine amg_s_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_s_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -208,7 +219,7 @@ module amg_s_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_ainv_solver_descr
   end interface
 

amgprec/amg_s_as_smoother.f90

@@ -396,21 +396,23 @@ contains
   end subroutine s_as_smoother_default
 
 
-  subroutine s_as_smoother_descr(sm,info,iout,coarse)
+  subroutine s_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_s_base_aggregator_mod.f90

@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_s_base_aggregator_xt_desc
 
-  subroutine  amg_s_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_base_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_base_aggregator_descr

amgprec/amg_s_base_smoother_mod.f90

@@ -272,7 +272,7 @@ module amg_s_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_s_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
            & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
            & amg_s_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_s_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_s_base_smoother_descr
   end interface
   

amgprec/amg_s_base_solver_mod.f90

@@ -270,7 +270,7 @@ module amg_s_base_solver_mod
   end interface
   
   interface
-    subroutine amg_s_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
            & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
            & amg_s_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_s_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_s_base_solver_descr
   end interface 
   

amgprec/amg_s_dec_aggregator_mod.f90

@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_s_dec_aggregator_fmt
   
-  subroutine  amg_s_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_dec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_dec_aggregator_descr

amgprec/amg_s_diag_solver.f90

@@ -219,7 +219,7 @@ contains
 
   end subroutine s_diag_solver_free
 
-  subroutine s_diag_solver_descr(sv,info,iout,coarse)
+  subroutine s_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_s_l1_diag_solver
   
 contains
 
-  subroutine s_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine s_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_s_gs_solver.f90

@@ -433,20 +433,22 @@ contains
     return
   end subroutine s_gs_solver_free
 
-  subroutine s_gs_solver_descr(sv,info,iout,coarse)
+  subroutine s_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function s_gs_solver_is_iterative
     
-  subroutine s_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine s_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_s_id_solver.f90

@@ -157,7 +157,7 @@ contains
     return
   end subroutine s_id_solver_free
 
-  subroutine s_id_solver_descr(sv,info,iout,coarse)
+  subroutine s_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_s_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_s_ilu_solver.f90

@@ -234,7 +234,7 @@ contains
     ! Arguments
     class(amg_s_ilu_solver_type), intent(inout) :: sv
 
-    sv%fact_type = psb_ilu_n_
+    sv%fact_type = amg_ilu_n_
     sv%fill_in   = 0
     sv%thresh    = szero
 
@@ -255,13 +255,13 @@ contains
     info = psb_success_
 
     call amg_check_def(sv%fact_type,&
-         & 'Factorization',psb_ilu_n_,is_legal_ilu_fact)
+         & 'Factorization',amg_ilu_n_,is_legal_ilu_fact)
 
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
+    case(amg_ilu_n_,amg_milu_n_)      
       call amg_check_def(sv%fill_in,&
            & 'Level',izero,is_int_non_negative)
-    case(psb_ilu_t_)                 
+    case(amg_ilu_t_)                 
       call amg_check_def(sv%thresh,&
            & 'Eps',szero,is_legal_s_fact_thrs)
     end select
@@ -406,7 +406,7 @@ contains
     return
   end subroutine s_ilu_solver_free
 
-  subroutine s_ilu_solver_descr(sv,info,iout,coarse)
+  subroutine s_ilu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -414,12 +414,14 @@ contains
     class(amg_s_ilu_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
-
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
+      
     ! Local variables
     integer(psb_ipk_) :: err_act
     character(len=20), parameter :: name='amg_s_ilu_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -428,15 +430,20 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout_,*) '  Incomplete factorization solver: ',&
+    write(iout_,*) trim(prefix_), '  Incomplete factorization solver: ',&
          &  amg_fact_names(sv%fact_type)
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
-      write(iout_,*) '  Fill level:',sv%fill_in
-    case(psb_ilu_t_)         
-      write(iout_,*) '  Fill level:',sv%fill_in
-      write(iout_,*) '  Fill threshold :',sv%thresh
+    case(amg_ilu_n_,amg_milu_n_)      
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+    case(amg_ilu_t_)         
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+      write(iout_,*) trim(prefix_), '  Fill threshold :',sv%thresh
     end select
 
     call psb_erractionrestore(err_act)
@@ -489,7 +496,7 @@ contains
     implicit none 
     integer(psb_ipk_)  :: val
     
-    val = psb_ilu_n_
+    val = amg_ilu_n_
   end function s_ilu_solver_get_id
 
   function s_ilu_solver_get_wrksize() result(val)

amgprec/amg_s_inner_mod.f90

@@ -109,11 +109,12 @@ module amg_s_inner_mod
   end interface amg_map_to_tprol
 
   abstract interface
-    subroutine amg_saggrmat_var_bld(a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_saggrmat_var_bld(dol1smoothing,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: psb_sspmat_type, psb_desc_type, psb_spk_, psb_ipk_, psb_lpk_, psb_lsspmat_type
       import ::  amg_s_onelev_type, amg_sml_parms
       implicit none 
+      integer(psb_ipk_), intent(in)               :: dol1smoothing
       type(psb_sspmat_type), intent(in)         :: a
       type(psb_desc_type), intent(inout)          :: desc_a
       integer(psb_lpk_), intent(inout)            :: ilaggr(:), nlaggr(:)

amgprec/amg_s_invk_solver.f90

@@ -52,6 +52,7 @@ module amg_s_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_s_invk_solver_check
     procedure, pass(sv) :: clone   => amg_s_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_s_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_s_invk_solver_cseti
     procedure, pass(sv) :: descr   => amg_s_invk_solver_descr
@@ -73,6 +74,17 @@ module amg_s_invk_solver
     end subroutine amg_s_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_spk_, amg_s_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_invk_solver_type), intent(inout) :: sv
+      class(amg_s_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_s_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_s_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
@@ -123,7 +135,7 @@ module amg_s_invk_solver
   end interface
 
   interface
-    subroutine amg_s_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_s_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -133,7 +145,7 @@ module amg_s_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_invk_solver_descr
   end interface
 

amgprec/amg_s_invt_solver.f90

@@ -52,6 +52,7 @@ module amg_s_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_s_invt_solver_check
     procedure, pass(sv) :: clone   => amg_s_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_s_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_s_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_s_invt_solver_csetr
@@ -73,6 +74,17 @@ module amg_s_invt_solver
     end subroutine amg_s_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_spk_, amg_s_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_invt_solver_type), intent(inout) :: sv
+      class(amg_s_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_s_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_s_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
@@ -134,16 +146,17 @@ module amg_s_invt_solver
   end interface
 
   interface
-    subroutine amg_s_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_s_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_s_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_s_invt_solver_descr
   end interface

amgprec/amg_s_jac_smoother.f90

@@ -203,8 +203,8 @@ module amg_s_jac_smoother
     subroutine amg_s_jac_smoother_clone_settings(sm,smout,info)
       import :: amg_s_jac_smoother_type, psb_spk_, &
            & amg_s_base_smoother_type, psb_ipk_
-      class(amg_s_jac_smoother_type), intent(inout)               :: sm
-      class(amg_s_base_smoother_type), allocatable, intent(inout) :: smout
+      class(amg_s_jac_smoother_type), intent(inout)  :: sm
+      class(amg_s_base_smoother_type), intent(inout) :: smout
       integer(psb_ipk_), intent(out)                :: info
     end subroutine amg_s_jac_smoother_clone_settings
   end interface
@@ -219,12 +219,13 @@ module amg_s_jac_smoother
   end interface
 
   interface
-    subroutine amg_s_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_s_jac_smoother_type, psb_ipk_
       class(amg_s_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_s_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_s_jac_smoother
   end interface
 
   interface
-    subroutine amg_s_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_s_l1_jac_smoother_type, psb_ipk_
       class(amg_s_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_s_l1_jac_smoother_descr
   end interface
 

amgprec/amg_s_jac_solver.f90

@@ -0,0 +1,585 @@
+!  
+!   
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante        
+!   
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!   
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!   
+!  
+!
+!
+! File: amg_s_jac_solver_mod.f90
+!
+! Module: amg_s_jac_solver_mod
+!
+!  This module defines: 
+!  - the amg_s_jac_solver_type data structure containing the ingredients
+!    for a local Jacobi  iteration. The iterations are local to a process
+!    (they operate on the block diagonal).
+!    
+!
+module amg_s_jac_solver
+
+  use amg_s_base_solver_mod
+
+  type, extends(amg_s_base_solver_type) :: amg_s_jac_solver_type
+    type(psb_sspmat_type)      :: a
+    type(psb_s_vect_type), allocatable :: dv
+    real(psb_spk_), allocatable        :: d(:)
+    integer(psb_ipk_)          :: sweeps
+    real(psb_spk_)             :: eps
+  contains
+    procedure, pass(sv) :: dump    => amg_s_jac_solver_dmp
+    procedure, pass(sv) :: check   => s_jac_solver_check
+    procedure, pass(sv) :: clone   => amg_s_jac_solver_clone
+    procedure, pass(sv) :: clone_settings => amg_s_jac_solver_clone_settings
+    procedure, pass(sv) :: clear_data     => amg_s_jac_solver_clear_data
+    procedure, pass(sv) :: build   => amg_s_jac_solver_bld
+    procedure, pass(sv) :: cnv     => amg_s_jac_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_s_jac_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_s_jac_solver_apply
+    procedure, pass(sv) :: free    => s_jac_solver_free
+    procedure, pass(sv) :: cseti   => s_jac_solver_cseti
+    procedure, pass(sv) :: csetc   => s_jac_solver_csetc
+    procedure, pass(sv) :: csetr   => s_jac_solver_csetr
+    procedure, pass(sv) :: descr   => s_jac_solver_descr
+    procedure, pass(sv) :: default => s_jac_solver_default
+    procedure, pass(sv) :: sizeof  => s_jac_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => s_jac_solver_get_nzeros
+    procedure, nopass   :: get_wrksz  => s_jac_solver_get_wrksize
+    procedure, nopass   :: get_fmt    => s_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => s_jac_solver_get_id
+    procedure, nopass   :: is_iterative => s_jac_solver_is_iterative
+  end type amg_s_jac_solver_type
+
+  type, extends(amg_s_jac_solver_type) :: amg_s_l1_jac_solver_type
+  contains
+    procedure, pass(sv) :: build   => amg_s_l1_jac_solver_bld
+    procedure, pass(sv) :: descr   => s_l1_jac_solver_descr
+    procedure, nopass   :: get_fmt    => s_l1_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => s_l1_jac_solver_get_id
+  end type amg_s_l1_jac_solver_type
+
+
+  private :: s_jac_solver_bld, s_jac_solver_apply, &
+       &  s_jac_solver_free,   &
+       &  s_jac_solver_descr,  s_jac_solver_sizeof, &
+       &  s_jac_solver_default, s_jac_solver_dmp, &
+       &  s_jac_solver_apply_vect, s_jac_solver_get_nzeros, &
+       &  s_jac_solver_get_fmt, s_jac_solver_check,&
+       &  s_jac_solver_is_iterative, &
+       &  s_jac_solver_get_id, s_jac_solver_get_wrksize
+
+  interface 
+    subroutine amg_s_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+         & trans,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_s_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)             :: desc_data
+      class(amg_s_jac_solver_type), intent(inout) :: sv
+      type(psb_s_vect_type),intent(inout)         :: x
+      type(psb_s_vect_type),intent(inout)         :: y
+      real(psb_spk_),intent(in)                    :: alpha,beta
+      character(len=1),intent(in)                   :: trans
+      real(psb_spk_),target, intent(inout)         :: work(:)
+      type(psb_s_vect_type),intent(inout)         :: wv(:)
+      integer(psb_ipk_), intent(out)                :: info
+      character, intent(in), optional                :: init
+      type(psb_s_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_s_jac_solver_apply_vect
+  end interface
+
+  interface 
+    subroutine amg_s_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info,init,initu)
+      import :: psb_desc_type, amg_s_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)      :: desc_data
+      class(amg_s_jac_solver_type), intent(inout) :: sv
+      real(psb_spk_),intent(inout)         :: x(:)
+      real(psb_spk_),intent(inout)         :: y(:)
+      real(psb_spk_),intent(in)            :: alpha,beta
+      character(len=1),intent(in)           :: trans
+      real(psb_spk_),target, intent(inout) :: work(:)
+      integer(psb_ipk_), intent(out)        :: info
+      character, intent(in), optional       :: init
+      real(psb_spk_),intent(inout), optional :: initu(:)
+    end subroutine amg_s_jac_solver_apply
+  end interface
+
+  interface 
+    subroutine amg_s_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_s_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_sspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_s_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_sspmat_type), intent(in), target, optional :: b
+      class(psb_s_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_s_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_s_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_s_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_s_l1_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_sspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_s_l1_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_sspmat_type), intent(in), target, optional :: b
+      class(psb_s_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_s_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_s_l1_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_s_jac_solver_cnv(sv,info,amold,vmold,imold)
+      import :: amg_s_jac_solver_type, psb_spk_, &
+           & psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      class(amg_s_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_s_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_s_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_s_jac_solver_cnv
+  end interface
+  
+  interface 
+    subroutine amg_s_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+      import :: psb_desc_type, amg_s_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, &
+           & psb_ipk_
+      implicit none 
+      class(amg_s_jac_solver_type), intent(in) :: sv
+      type(psb_desc_type), intent(in)             :: desc
+      integer(psb_ipk_), intent(in)              :: level
+      integer(psb_ipk_), intent(out)             :: info
+      character(len=*), intent(in), optional     :: prefix, head
+      logical, optional, intent(in)              :: solver, global_num
+    end subroutine amg_s_jac_solver_dmp
+  end interface
+  
+  interface
+    subroutine amg_s_jac_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
+           & amg_s_base_solver_type, amg_s_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_s_jac_solver_type), intent(inout)               :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)              :: info
+    end subroutine amg_s_jac_solver_clone
+  end interface
+  
+!!$  interface
+!!$    subroutine amg_s_l1_jac_solver_clone(sv,svout,info)
+!!$      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+!!$           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
+!!$           & amg_s_base_solver_type, amg_s_l1_jac_solver_type, psb_ipk_
+!!$      Implicit None
+!!$      
+!!$      ! Arguments
+!!$      class(amg_s_l1_jac_solver_type), intent(inout)               :: sv
+!!$      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+!!$      integer(psb_ipk_), intent(out)              :: info
+!!$    end subroutine amg_s_l1_jac_solver_clone
+!!$  end interface
+
+  interface
+    subroutine amg_s_jac_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
+           & amg_s_base_solver_type, amg_s_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_s_jac_solver_type), intent(inout) :: sv
+      class(amg_s_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_s_jac_solver_clone_settings
+  end interface
+
+  interface
+    subroutine amg_s_jac_solver_clear_data(sv,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
+           & amg_s_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_s_jac_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_s_jac_solver_clear_data
+  end interface
+
+contains
+
+  subroutine s_jac_solver_default(sv)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv
+
+    sv%sweeps = ione
+    sv%eps    = dzero
+    
+    return
+  end subroutine s_jac_solver_default
+
+  subroutine s_jac_solver_check(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='s_jac_solver_check'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call amg_check_def(sv%sweeps,&
+         & 'Jacobi sweeps',ione,is_int_positive)
+
+    if (info /= psb_success_) goto 9999
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine s_jac_solver_check
+
+  subroutine s_jac_solver_cseti(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='s_jac_solver_cseti'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+    select case(psb_toupper(what))
+    case('SOLVER_SWEEPS')
+      sv%sweeps = val      
+    case default
+      call sv%amg_s_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_cseti
+
+  subroutine s_jac_solver_csetc(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv
+    character(len=*), intent(in)                  :: what 
+    character(len=*), intent(in)                  :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, ival
+    character(len=20)  :: name='s_jac_solver_csetc'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+
+    call sv%amg_s_base_solver_type%set(what,val,info,idx=idx)
+  
+    if (info /= psb_success_) then
+      info = psb_err_from_subroutine_
+      call psb_errpush(info, name)
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_csetc
+  
+  subroutine s_jac_solver_csetr(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    real(psb_spk_), intent(in)                     :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='s_jac_solver_csetr'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    select case(psb_toupper(what))
+    case('SOLVER_EPS') 
+      sv%eps = val
+    case default
+      call sv%amg_s_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_csetr
+
+  subroutine s_jac_solver_free(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='s_jac_solver_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call sv%a%free()
+    if (allocated(sv%dv)) then
+      call sv%dv%free(info)
+      deallocate(sv%dv)
+    end if
+    if (allocated(sv%d)) deallocate(sv%d)
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_free
+
+  subroutine s_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_s_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_descr
+
+  function s_jac_solver_get_nzeros(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+    
+    val = 0 
+    val = val + sv%a%get_nzeros()
+    val = val + sv%dv%get_nrows()
+
+    return
+  end function s_jac_solver_get_nzeros
+
+  function s_jac_solver_sizeof(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = psb_sizeof_ip 
+    val = val + sv%a%sizeof()
+    val = val + sv%dv%sizeof()
+
+    return
+  end function s_jac_solver_sizeof
+
+  function s_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "Jacobi solver"
+  end function s_jac_solver_get_fmt
+
+  function s_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_jac_
+  end function s_jac_solver_get_id
+
+  !
+  ! If this is true, then the solver needs a starting
+  ! guess. Currently only handled in JAC smoother. 
+  ! 
+  function s_jac_solver_is_iterative() result(val)
+    implicit none 
+    logical  :: val
+
+    val = .true.
+  end function s_jac_solver_is_iterative
+    
+  function s_jac_solver_get_wrksize() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = 2
+  end function s_jac_solver_get_wrksize
+
+  subroutine s_l1_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_l1_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_s_l1_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_l1_jac_solver_descr
+
+  function s_l1_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "L1-Jacobi solver"
+  end function s_l1_jac_solver_get_fmt
+
+  function s_l1_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_l1_jac_
+  end function s_l1_jac_solver_get_id
+  
+end module amg_s_jac_solver

amgprec/amg_s_krm_solver.f90

@@ -436,7 +436,7 @@ contains
     val = "KRM solver"
   end function s_krm_solver_get_fmt
 
-  subroutine s_krm_solver_descr(sv,info,iout,coarse)
+  subroutine s_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -444,12 +444,14 @@ contains
     class(amg_s_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -458,23 +460,22 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_s_matchboxp_mod.f90

@@ -143,9 +143,10 @@ contains
     type(psb_ls_coo_sparse_mat) :: tmpcoo
     logical  :: display_out_, print_out_, reproducible_
     logical, parameter  :: dump=.false., debug=.false., dump_mate=.false., &
-         & debug_ilaggr=.false., debug_sync=.false.
+         & debug_ilaggr=.false., debug_sync=.false., debug_mate=.false.
     integer(psb_ipk_), save :: idx_bldmtc=-1, idx_phase1=-1, idx_phase2=-1, idx_phase3=-1
     logical, parameter :: do_timings=.true.
+    integer, parameter :: ilaggr_neginit=-1, ilaggr_nonlocal=-2
 
     ictxt = desc_a%get_ctxt()
     call psb_info(ictxt,iam,np)
@@ -187,7 +188,7 @@ contains
     call desc_a%l2gip(ilv,info,owned=.false.)
 
     call psb_geall(ilaggr,desc_a,info)
-    ilaggr = -1
+    ilaggr = ilaggr_neginit
     call psb_geasb(ilaggr,desc_a,info)
     nr = a%get_nrows()
     nc = a%get_ncols()
@@ -213,7 +214,20 @@ contains
       call psb_barrier(ictxt)
       if (iam == 0) write(0,*)' out from buildmatching:', info
     end if
-
+    if (debug_mate) then
+      block
+        integer(psb_lpk_), allocatable :: ckmate(:)
+        allocate(ckmate(nr))
+        ckmate(1:nr) = mate(1:nr)
+        call psb_msort(ckmate(1:nr))
+        do i=1,nr-1
+          if ((ckmate(i)>0) .and. (ckmate(i) == ckmate(i+1))) then
+            write(0,*) iam,' Duplicate mate entry  at',i,' :',ckmate(i)
+          end if
+        end do
+      end block
+    end if
+     
     if (info == 0) then
       if (do_timings) call psb_tic(idx_phase2)
       if (debug_sync) then
@@ -259,7 +273,7 @@ contains
           cycle
         else
 
-          if (ilaggr(k) == -1) then
+          if (ilaggr(k) == ilaggr_neginit) then
 
             wk   = w(k)
             widx = w(idx)
@@ -267,7 +281,7 @@ contains
             nrmagg = wmax*sqrt((wk/wmax)**2+(widx/wmax)**2)
             if (nrmagg > epsilon(nrmagg)) then
               if (idx <= nr) then
-                if (ilaggr(idx) == -1) then
+                if (ilaggr(idx) == ilaggr_neginit) then
                   ! Now, if both vertices are local, the aggregate is local
                   ! (kinda obvious).
                   nlaggr(iam) = nlaggr(iam) + 1
@@ -275,6 +289,9 @@ contains
                   ilaggr(idx) = nlaggr(iam)
                   wtemp(k)    = w(k)/nrmagg
                   wtemp(idx)  = w(idx)/nrmagg
+                else
+                  write(0,*) iam,' Inconsistent mate? ',k,mate(k),idx,&
+                       &mate(idx),ilaggr(idx)
                 end if
                 nlpairs = nlpairs+1
               else if (idx <= nc) then
@@ -294,7 +311,7 @@ contains
                     ilaggr(k)   = nlaggr(iam)
                     nlpairs = nlpairs+1
                   else
-                    ilaggr(k) = -2
+                    ilaggr(k) = ilaggr_nonlocal
                   end if
                 else
                   ! Use a statistically unbiased tie-breaking rule,
@@ -309,7 +326,7 @@ contains
                     ilaggr(k)   = nlaggr(iam)
                     nlpairs = nlpairs+1
                   else
-                    ilaggr(k) = -2
+                    ilaggr(k) = ilaggr_nonlocal
                   end if
                 end if
               end if
@@ -325,6 +342,12 @@ contains
                 nlsingl     = nlsingl + 1
               end if
             end if
+            if (ilaggr(k) == ilaggr_neginit) then
+              write(0,*) iam,' Error: no update to ',k,mate(k),&
+                   & abs(w(k)),nrmagg,epsilon(nrmagg),wtemp(k)
+            end if
+          else
+            if (ilaggr(k)<0) write(0,*) 'Strange? ',k,ilaggr(k)
           end if
         end if
       end do
@@ -332,7 +355,7 @@ contains
       if (do_timings) call psb_tic(idx_phase3)
 
       ! Ok, now compute offsets, gather halo and fix non-local
-      ! aggregates  (those where ilaggr == -2)
+      ! aggregates  (those where ilaggr == ilaggr_nonlocal)
       call psb_sum(ictxt,nlaggr)
       ntaggr  = sum(nlaggr(0:np-1))
       naggrm1 = sum(nlaggr(0:iam-1))
@@ -347,7 +370,7 @@ contains
       call psb_halo(wtemp,desc_a,info)
       ! Cleanup as yet unmarked entries
       do k=1,nr
-        if (ilaggr(k) == -2) then
+        if (ilaggr(k) == ilaggr_nonlocal) then
           idx = mate(k)
           if (idx > nr) then
             i   = ilaggr(idx)
@@ -359,9 +382,14 @@ contains
           else
             write(0,*) 'Error : unresolved (paired) index ',k,idx,i,nr,nc, ilv(k),ilv(idx)
           end if
-        end if
-        if (ilaggr(k) <0) then
-          write(0,*) 'Matchboxp: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
+        else if (ilaggr(k) <0) then
+          write(0,*) iam,'Matchboxp: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
+          write(0,*) iam,'         :             : ',nr,nc,mate(k)
+          if (mate(k) <= nr) then
+            write(0,*) iam,'         :             : ',ilaggr(mate(k)),mate(mate(k)),&
+                 & ilv(k),ilv(mate(k)), ilv(mate(mate(k))),ilaggr(mate(mate(k)))
+          end if
+          flush(0)
         end if
       end do
       if (debug_sync) then
@@ -414,7 +442,7 @@ contains
 
       end block
       if (iam == 0) then
-        write(0,*) 'Matching statistics: Unmatched nodes ',&
+        write(0,*) iam,'Matching statistics: Unmatched nodes ',&
              & nunmatched,' Singletons:',nlsingl,' Pairs:',nlpairs
       end if
 

amgprec/amg_s_mumps_solver.F90

@@ -78,7 +78,8 @@ module amg_s_mumps_solver
     !
     ! Controls to be set before MUMPS instantiation:
     !
-    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: LOCAL   1==amg_global_solver_: GLOBAL
+    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: 'LOCAL_SOLVER
+    !                            1==amg_global_solver_: 'GLOBAL_SOLVER'
     ! IPAR(2) : MUMPS_PRINT_ERR  print verbosity (see MUMPS)
     ! IPAR(3) : MUMPS_SYM        0: non-symmetric   2: symmetric
     integer(psb_ipk_), dimension(3) :: ipar
@@ -313,22 +314,24 @@ subroutine s_mumps_solver_finalize(sv)
 
 end subroutine s_mumps_solver_finalize
 
-subroutine s_mumps_solver_descr(sv,info,iout,coarse)
+subroutine s_mumps_solver_descr(sv,info,iout,coarse,prefix)
 
   Implicit None
 
   ! Arguments
   class(amg_s_mumps_solver_type), intent(in) :: sv
-  integer(psb_ipk_), intent(out)                     :: info
-  integer(psb_ipk_), intent(in), optional            :: iout
-  logical, intent(in), optional       :: coarse
-
+  integer(psb_ipk_), intent(out)               :: info
+  integer(psb_ipk_), intent(in), optional      :: iout
+  logical, intent(in), optional                :: coarse
+  character(len=*), intent(in), optional       :: prefix
+      
   ! Local variables
   integer(psb_ipk_)   :: err_act
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: me, np
   character(len=20), parameter :: name='amg_z_mumps_solver_descr'
   integer(psb_ipk_) :: iout_
+  character(1024)    :: prefix_
 
   call psb_erractionsave(err_act)
   info = psb_success_
@@ -337,8 +340,13 @@ subroutine s_mumps_solver_descr(sv,info,iout,coarse)
   else
     iout_ = psb_out_unit
   endif
+  if (present(prefix)) then
+    prefix_ = prefix
+  else
+    prefix_ = ""
+  end if
 
-  write(iout_,*) '  MUMPS  Solver. '
+  write(iout_,*) trim(prefix_), '  MUMPS  Solver. '
 
   call psb_erractionrestore(err_act)
   return

amgprec/amg_s_onelev_mod.f90

@@ -188,8 +188,10 @@ module amg_s_onelev_mod
     procedure, pass(lv) :: clone   => s_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_s_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_s_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_s_base_onelev_memory_use
     procedure, pass(lv) :: default => s_base_onelev_default
     procedure, pass(lv) :: free    => amg_s_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_s_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => s_base_onelev_nullify
     procedure, pass(lv) :: check => amg_s_base_onelev_check
     procedure, pass(lv) :: dump  => amg_s_base_onelev_dump
@@ -258,7 +260,7 @@ module amg_s_onelev_mod
   end interface
 
   interface
-    subroutine amg_s_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
+    subroutine amg_s_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
@@ -269,9 +271,27 @@ module amg_s_onelev_mod
       integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_base_onelev_descr
   end interface
 
+  interface
+    subroutine amg_s_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_s_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_s_base_onelev_memory_use
+  end interface
+
   interface
     subroutine amg_s_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_s_onelev_type, psb_s_base_vect_type, psb_spk_, &
@@ -285,7 +305,7 @@ module amg_s_onelev_mod
     end subroutine amg_s_base_onelev_cnv
   end interface
 
-interface
+  interface
     subroutine amg_s_base_onelev_free(lv,info)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
@@ -297,6 +317,18 @@ interface
     end subroutine amg_s_base_onelev_free
   end interface
 
+  interface
+    subroutine amg_s_base_onelev_free_smoothers(lv,info)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_s_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_base_onelev_free_smoothers
+  end interface
+
   interface
     subroutine amg_s_base_onelev_check(lv,info)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &

amgprec/amg_s_parmatch_aggregator_mod.F90

@@ -244,11 +244,12 @@ module amg_s_parmatch_aggregator_mod
   end interface
 
   interface
-    subroutine amg_s_parmatch_unsmth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_s_parmatch_unsmth_bld(dol1smoothing,ag,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
            & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
       implicit none
+      integer(psb_ipk_), intent(in) :: dol1smoothing
       class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
       type(psb_sspmat_type), intent(in)       :: a
       type(psb_desc_type), intent(inout)      :: desc_a
@@ -262,11 +263,12 @@ module amg_s_parmatch_aggregator_mod
   end interface
 
   interface
-    subroutine amg_s_parmatch_smth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_s_parmatch_smth_bld(dol1smoothing,ag,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
            & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
       implicit none
+      integer(psb_ipk_), intent(in) :: dol1smoothing
       class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
       type(psb_sspmat_type), intent(in)       :: a
       type(psb_desc_type), intent(inout)      :: desc_a
@@ -390,18 +392,25 @@ contains
 
   end function amg_s_parmatch_aggregator_sizeof
 
-  subroutine  amg_s_parmatch_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_parmatch_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none
     class(amg_s_parmatch_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Parallel Matching Aggregator'
-    write(iout,*) '   Number of matching  sweeps: ',ag%n_sweeps
-    write(iout,*) '   Matching algorithm         : MatchBoxP (PREIS)'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Parallel Matching Aggregator'
+    write(iout,*) trim(prefix_),' ','   Number of matching  sweeps: ',ag%n_sweeps
+    write(iout,*) trim(prefix_),' ','   Matching algorithm         : MatchBoxP (PREIS)'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
 
     return
   end subroutine amg_s_parmatch_aggregator_descr

amgprec/amg_s_poly_smoother.f90

@@ -0,0 +1,374 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_s_poly_smoother_mod.f90
+!
+! Module: amg_s_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_s_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_s_poly_smoother
+  use amg_s_base_smoother_mod
+  use amg_d_poly_coeff_mod
+  
+  type, extends(amg_s_base_smoother_type) :: amg_s_poly_smoother_type
+    ! The local solver component is inherited from the
+    ! parent type.
+    !    class(amg_s_base_solver_type), allocatable :: sv
+    !
+    integer(psb_ipk_)              :: pdegree, variant
+    integer(psb_ipk_)              :: rho_estimate=amg_poly_rho_est_power_
+    integer(psb_ipk_)              :: rho_estimate_iterations=10
+    type(psb_sspmat_type), pointer :: pa => null()
+    real(psb_spk_), allocatable    :: poly_beta(:)
+    real(psb_spk_)                 :: cf_a = szero
+    real(psb_spk_)                 :: rho_ba = -sone
+  contains
+    procedure, pass(sm) :: apply_v => amg_s_poly_smoother_apply_vect
+!!$    procedure, pass(sm) :: apply_a => amg_s_poly_smoother_apply
+    procedure, pass(sm) :: dump    => amg_s_poly_smoother_dmp
+    procedure, pass(sm) :: build   => amg_s_poly_smoother_bld
+    procedure, pass(sm) :: cnv     => amg_s_poly_smoother_cnv
+    procedure, pass(sm) :: clone   => amg_s_poly_smoother_clone
+    procedure, pass(sm) :: clone_settings => amg_s_poly_smoother_clone_settings
+    procedure, pass(sm) :: clear_data     => amg_s_poly_smoother_clear_data  
+    procedure, pass(sm) :: free    => s_poly_smoother_free
+    procedure, pass(sm) :: cseti   => amg_s_poly_smoother_cseti
+    procedure, pass(sm) :: csetc   => amg_s_poly_smoother_csetc
+    procedure, pass(sm) :: csetr   => amg_s_poly_smoother_csetr
+    procedure, pass(sm) :: descr   => amg_s_poly_smoother_descr
+    procedure, pass(sm) :: sizeof  => s_poly_smoother_sizeof
+    procedure, pass(sm) :: default => s_poly_smoother_default
+    procedure, pass(sm) :: get_nzeros => s_poly_smoother_get_nzeros
+    procedure, pass(sm) :: get_wrksz => s_poly_smoother_get_wrksize
+    procedure, nopass   :: get_fmt    => s_poly_smoother_get_fmt
+    procedure, nopass   :: get_id     => s_poly_smoother_get_id
+  end type amg_s_poly_smoother_type
+  private :: s_poly_smoother_free, &
+       & s_poly_smoother_sizeof,  s_poly_smoother_get_nzeros, &
+       & s_poly_smoother_get_fmt, s_poly_smoother_get_id, &
+       & s_poly_smoother_get_wrksize
+
+
+  interface
+    subroutine amg_s_poly_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
+         & sweeps,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_
+
+      type(psb_desc_type), intent(in)                 :: desc_data
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      type(psb_s_vect_type),intent(inout)           :: x
+      type(psb_s_vect_type),intent(inout)           :: y
+      real(psb_spk_),intent(in)                      :: alpha,beta
+      character(len=1),intent(in)                     :: trans
+      integer(psb_ipk_), intent(in)                   :: sweeps
+      real(psb_spk_),target, intent(inout)           :: work(:)
+      type(psb_s_vect_type),intent(inout)           :: wv(:)
+      integer(psb_ipk_), intent(out)                  :: info
+      character, intent(in), optional                :: init
+      type(psb_s_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_s_poly_smoother_apply_vect
+  end interface
+
+!!$  interface
+!!$    subroutine amg_s_poly_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
+!!$         & sweeps,work,info,init,initu)
+!!$      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+!!$           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, &
+!!$           & psb_ipk_
+!!$      type(psb_desc_type), intent(in)      :: desc_data
+!!$      class(amg_s_poly_smoother_type), intent(inout) :: sm
+!!$      real(psb_spk_),intent(inout)         :: x(:)
+!!$      real(psb_spk_),intent(inout)         :: y(:)
+!!$      real(psb_spk_),intent(in)            :: alpha,beta
+!!$      character(len=1),intent(in)           :: trans
+!!$      integer(psb_ipk_), intent(in)         :: sweeps
+!!$      real(psb_spk_),target, intent(inout) :: work(:)
+!!$      integer(psb_ipk_), intent(out)        :: info
+!!$      character, intent(in), optional       :: init
+!!$      real(psb_spk_),intent(inout), optional :: initu(:)
+!!$    end subroutine amg_s_poly_smoother_apply
+!!$  end interface
+!!$
+  
+  interface
+    subroutine amg_s_poly_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
+      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      type(psb_sspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_s_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_s_base_sparse_mat), intent(in), optional :: amold
+      class(psb_s_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_s_poly_smoother_bld
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_cnv(sm,info,amold,vmold,imold)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      class(amg_s_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_s_base_sparse_mat), intent(in), optional :: amold
+      class(psb_s_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_s_poly_smoother_cnv
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_dmp(sm,desc,level,info,prefix,head,smoother,solver,global_num)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, &
+           & psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(in) :: sm
+      type(psb_desc_type), intent(in)               :: desc
+      integer(psb_ipk_), intent(in)               :: level
+      integer(psb_ipk_), intent(out)              :: info
+      character(len=*), intent(in), optional :: prefix, head
+      logical, optional, intent(in)    :: smoother, solver, global_num
+    end subroutine amg_s_poly_smoother_dmp
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clone(sm,smout,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout)               :: sm
+      class(amg_s_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clone
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clone_settings(sm,smout,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      class(amg_s_base_smoother_type), intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clone_settings
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clear_data(sm,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout)               :: sm
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clear_data
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_descr(sm,info,iout,coarse,prefix)
+      import :: amg_s_poly_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(in) :: sm
+      integer(psb_ipk_), intent(out)               :: info
+      integer(psb_ipk_), intent(in), optional      :: iout
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
+    end subroutine amg_s_poly_smoother_descr
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_cseti(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      integer(psb_ipk_), intent(in)                  :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_cseti
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_csetc(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      character(len=*), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_csetc
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_csetr(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      real(psb_spk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_csetr
+  end interface
+
+
+contains
+
+
+  subroutine s_poly_smoother_free(sm,info)
+
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_), intent(out)                  :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20)  :: name='s_poly_smoother_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+
+
+    if (allocated(sm%sv)) then
+      call sm%sv%free(info)
+      if (info == psb_success_) deallocate(sm%sv,stat=info)
+      if (info /= psb_success_) then
+        info = psb_err_alloc_dealloc_
+        call psb_errpush(info,name)
+        goto 9999
+      end if
+    end if
+    if (allocated(sm%poly_beta))  deallocate(sm%poly_beta)
+    sm%pa => null()
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_poly_smoother_free
+
+  function s_poly_smoother_sizeof(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+
+    val = psb_sizeof_dp
+    if (allocated(sm%sv)) val = val + sm%sv%sizeof()
+    if (allocated(sm%poly_beta)) val = val + psb_sizeof_dp * size(sm%poly_beta)
+
+    return
+  end function s_poly_smoother_sizeof
+
+  subroutine s_poly_smoother_default(sm)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+
+    !
+    ! Default: BJAC with no residual check
+    !
+    sm%pdegree      = 1
+    sm%rho_ba       = -sone
+    sm%variant      = amg_cheb_4_
+    sm%rho_estimate = amg_poly_rho_est_power_
+    sm%rho_estimate_iterations = 20
+    if (allocated(sm%sv)) then
+      call sm%sv%default()
+    end if
+
+    return
+  end subroutine s_poly_smoother_default
+
+  function s_poly_smoother_get_nzeros(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = 0
+    if (allocated(sm%sv)) val = val + sm%sv%get_nzeros()
+
+    return
+  end function s_poly_smoother_get_nzeros
+
+  function s_poly_smoother_get_wrksize(sm) result(val)
+    implicit none
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_)  :: val
+
+    val = 4
+    if (allocated(sm%sv)) val = val + sm%sv%get_wrksz()
+
+  end function s_poly_smoother_get_wrksize
+
+  function s_poly_smoother_get_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Polynomial smoother"
+  end function s_poly_smoother_get_fmt
+
+  function s_poly_smoother_get_id() result(val)
+    implicit none
+    integer(psb_ipk_)  :: val
+
+    val = amg_poly_
+  end function s_poly_smoother_get_id
+
+
+end module amg_s_poly_smoother

amgprec/amg_s_prec_type.f90

@@ -135,8 +135,11 @@ module amg_s_prec_type
     procedure, pass(prec)               :: build        => amg_sprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_s_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_s_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_s_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_s_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_s_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_sfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_sfile_prec_memory_use
   end type amg_sprec_type
 
   private :: amg_s_dump, amg_s_get_compl,  amg_s_cmp_compl,&
@@ -155,18 +158,35 @@ module amg_s_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_sfile_prec_descr(prec,info,iout,root,verbosity)
+    subroutine amg_sfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_sprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_sprec_type), intent(in)      :: prec
-      integer(psb_ipk_), intent(out) :: info
+      class(amg_sprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_sfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_sfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_sprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_sprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_sfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_sprec_sizeof
   end interface
@@ -344,6 +364,14 @@ module amg_s_prec_type
     end subroutine amg_s_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_s_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_s_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -617,6 +645,68 @@ contains
 
   end subroutine amg_s_prec_free
 
+  subroutine amg_s_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_sprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_s_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_s_smoothers_free
+
+  subroutine amg_s_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_sprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_s_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_s_hierarchy_free
 
 
   !

amgprec/amg_s_slu_solver.F90

@@ -385,20 +385,22 @@ contains
   
   end subroutine s_slu_solver_finalize
 
-  subroutine s_slu_solver_descr(sv,info,iout,coarse)
+  subroutine s_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_s_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_s_symdec_aggregator_mod.f90

@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_s_symdec_aggregator_fmt
   
-  subroutine  amg_s_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_symdec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_symdec_aggregator_descr

amgprec/amg_z_ainv_solver.F90

@@ -58,6 +58,7 @@ module amg_z_ainv_solver
     procedure, pass(sv) :: check   => amg_z_ainv_solver_check
     procedure, pass(sv) :: build   => amg_z_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_z_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_z_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_z_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_z_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_z_ainv_solver_csetr
@@ -85,6 +86,16 @@ module amg_z_ainv_solver
     end subroutine amg_z_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_z_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & amg_z_base_solver_type, psb_dpk_, amg_z_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_z_ainv_solver_type), intent(inout) :: sv
+      class(amg_z_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_z_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_z_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -198,7 +209,7 @@ module amg_z_ainv_solver
 !!$  end interface
 
   interface
-    subroutine amg_z_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_z_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -208,7 +219,7 @@ module amg_z_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_z_ainv_solver_descr
   end interface
 

amgprec/amg_z_as_smoother.f90

@@ -396,21 +396,23 @@ contains
   end subroutine z_as_smoother_default
 
 
-  subroutine z_as_smoother_descr(sm,info,iout,coarse)
+  subroutine z_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_z_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_z_base_aggregator_mod.f90

@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_z_base_aggregator_xt_desc
 
-  subroutine  amg_z_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_z_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_z_base_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_z_base_aggregator_descr

amgprec/amg_z_base_smoother_mod.f90

@@ -272,7 +272,7 @@ module amg_z_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_z_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_z_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
            & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
            & amg_z_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_z_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_z_base_smoother_descr
   end interface
   

amgprec/amg_z_base_solver_mod.f90

@@ -270,7 +270,7 @@ module amg_z_base_solver_mod
   end interface
   
   interface
-    subroutine amg_z_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
            & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
            & amg_z_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_z_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_z_base_solver_descr
   end interface 
   

amgprec/amg_z_dec_aggregator_mod.f90

@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_z_dec_aggregator_fmt
   
-  subroutine  amg_z_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_z_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_z_dec_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_z_dec_aggregator_descr

amgprec/amg_z_diag_solver.f90

@@ -219,7 +219,7 @@ contains
 
   end subroutine z_diag_solver_free
 
-  subroutine z_diag_solver_descr(sv,info,iout,coarse)
+  subroutine z_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_z_l1_diag_solver
   
 contains
 
-  subroutine z_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine z_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_z_gs_solver.f90

@@ -433,20 +433,22 @@ contains
     return
   end subroutine z_gs_solver_free
 
-  subroutine z_gs_solver_descr(sv,info,iout,coarse)
+  subroutine z_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_z_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function z_gs_solver_is_iterative
     
-  subroutine z_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine z_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_z_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_z_id_solver.f90

@@ -157,7 +157,7 @@ contains
     return
   end subroutine z_id_solver_free
 
-  subroutine z_id_solver_descr(sv,info,iout,coarse)
+  subroutine z_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_z_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_z_ilu_solver.f90

@@ -234,7 +234,7 @@ contains
     ! Arguments
     class(amg_z_ilu_solver_type), intent(inout) :: sv
 
-    sv%fact_type = psb_ilu_n_
+    sv%fact_type = amg_ilu_n_
     sv%fill_in   = 0
     sv%thresh    = dzero
 
@@ -255,13 +255,13 @@ contains
     info = psb_success_
 
     call amg_check_def(sv%fact_type,&
-         & 'Factorization',psb_ilu_n_,is_legal_ilu_fact)
+         & 'Factorization',amg_ilu_n_,is_legal_ilu_fact)
 
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
+    case(amg_ilu_n_,amg_milu_n_)      
       call amg_check_def(sv%fill_in,&
            & 'Level',izero,is_int_non_negative)
-    case(psb_ilu_t_)                 
+    case(amg_ilu_t_)                 
       call amg_check_def(sv%thresh,&
            & 'Eps',dzero,is_legal_d_fact_thrs)
     end select
@@ -406,7 +406,7 @@ contains
     return
   end subroutine z_ilu_solver_free
 
-  subroutine z_ilu_solver_descr(sv,info,iout,coarse)
+  subroutine z_ilu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -414,12 +414,14 @@ contains
     class(amg_z_ilu_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
-
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
+      
     ! Local variables
     integer(psb_ipk_) :: err_act
     character(len=20), parameter :: name='amg_z_ilu_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -428,15 +430,20 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout_,*) '  Incomplete factorization solver: ',&
+    write(iout_,*) trim(prefix_), '  Incomplete factorization solver: ',&
          &  amg_fact_names(sv%fact_type)
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
-      write(iout_,*) '  Fill level:',sv%fill_in
-    case(psb_ilu_t_)         
-      write(iout_,*) '  Fill level:',sv%fill_in
-      write(iout_,*) '  Fill threshold :',sv%thresh
+    case(amg_ilu_n_,amg_milu_n_)      
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+    case(amg_ilu_t_)         
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+      write(iout_,*) trim(prefix_), '  Fill threshold :',sv%thresh
     end select
 
     call psb_erractionrestore(err_act)
@@ -489,7 +496,7 @@ contains
     implicit none 
     integer(psb_ipk_)  :: val
     
-    val = psb_ilu_n_
+    val = amg_ilu_n_
   end function z_ilu_solver_get_id
 
   function z_ilu_solver_get_wrksize() result(val)

amgprec/amg_z_inner_mod.f90

@@ -109,11 +109,12 @@ module amg_z_inner_mod
   end interface amg_map_to_tprol
 
   abstract interface
-    subroutine amg_zaggrmat_var_bld(a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_zaggrmat_var_bld(dol1smoothing,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: psb_zspmat_type, psb_desc_type, psb_dpk_, psb_ipk_, psb_lpk_, psb_lzspmat_type
       import ::  amg_z_onelev_type, amg_dml_parms
       implicit none 
+      integer(psb_ipk_), intent(in)               :: dol1smoothing
       type(psb_zspmat_type), intent(in)         :: a
       type(psb_desc_type), intent(inout)          :: desc_a
       integer(psb_lpk_), intent(inout)            :: ilaggr(:), nlaggr(:)

amgprec/amg_z_invk_solver.f90

@@ -52,6 +52,7 @@ module amg_z_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_z_invk_solver_check
     procedure, pass(sv) :: clone   => amg_z_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_z_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_z_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_z_invk_solver_cseti
     procedure, pass(sv) :: descr   => amg_z_invk_solver_descr
@@ -73,6 +74,17 @@ module amg_z_invk_solver
     end subroutine amg_z_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_z_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & amg_z_base_solver_type, psb_dpk_, amg_z_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_z_invk_solver_type), intent(inout) :: sv
+      class(amg_z_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_z_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_z_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
@@ -123,7 +135,7 @@ module amg_z_invk_solver
   end interface
 
   interface
-    subroutine amg_z_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_z_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -133,7 +145,7 @@ module amg_z_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_z_invk_solver_descr
   end interface
 

amgprec/amg_z_invt_solver.f90

@@ -52,6 +52,7 @@ module amg_z_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_z_invt_solver_check
     procedure, pass(sv) :: clone   => amg_z_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_z_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_z_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_z_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_z_invt_solver_csetr
@@ -73,6 +74,17 @@ module amg_z_invt_solver
     end subroutine amg_z_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_z_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & amg_z_base_solver_type, psb_dpk_, amg_z_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_z_invt_solver_type), intent(inout) :: sv
+      class(amg_z_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_z_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_z_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
@@ -134,16 +146,17 @@ module amg_z_invt_solver
   end interface
 
   interface
-    subroutine amg_z_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_z_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_z_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_z_invt_solver_descr
   end interface

amgprec/amg_z_jac_smoother.f90

@@ -203,8 +203,8 @@ module amg_z_jac_smoother
     subroutine amg_z_jac_smoother_clone_settings(sm,smout,info)
       import :: amg_z_jac_smoother_type, psb_dpk_, &
            & amg_z_base_smoother_type, psb_ipk_
-      class(amg_z_jac_smoother_type), intent(inout)               :: sm
-      class(amg_z_base_smoother_type), allocatable, intent(inout) :: smout
+      class(amg_z_jac_smoother_type), intent(inout)  :: sm
+      class(amg_z_base_smoother_type), intent(inout) :: smout
       integer(psb_ipk_), intent(out)                :: info
     end subroutine amg_z_jac_smoother_clone_settings
   end interface
@@ -219,12 +219,13 @@ module amg_z_jac_smoother
   end interface
 
   interface
-    subroutine amg_z_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_z_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_z_jac_smoother_type, psb_ipk_
       class(amg_z_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_z_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_z_jac_smoother
   end interface
 
   interface
-    subroutine amg_z_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_z_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_z_l1_jac_smoother_type, psb_ipk_
       class(amg_z_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_z_l1_jac_smoother_descr
   end interface
 

amgprec/amg_z_jac_solver.f90

@@ -0,0 +1,585 @@
+!  
+!   
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante        
+!   
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!   
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!   
+!  
+!
+!
+! File: amg_z_jac_solver_mod.f90
+!
+! Module: amg_z_jac_solver_mod
+!
+!  This module defines: 
+!  - the amg_z_jac_solver_type data structure containing the ingredients
+!    for a local Jacobi  iteration. The iterations are local to a process
+!    (they operate on the block diagonal).
+!    
+!
+module amg_z_jac_solver
+
+  use amg_z_base_solver_mod
+
+  type, extends(amg_z_base_solver_type) :: amg_z_jac_solver_type
+    type(psb_zspmat_type)      :: a
+    type(psb_z_vect_type), allocatable :: dv
+    complex(psb_dpk_), allocatable        :: d(:)
+    integer(psb_ipk_)          :: sweeps
+    real(psb_dpk_)             :: eps
+  contains
+    procedure, pass(sv) :: dump    => amg_z_jac_solver_dmp
+    procedure, pass(sv) :: check   => z_jac_solver_check
+    procedure, pass(sv) :: clone   => amg_z_jac_solver_clone
+    procedure, pass(sv) :: clone_settings => amg_z_jac_solver_clone_settings
+    procedure, pass(sv) :: clear_data     => amg_z_jac_solver_clear_data
+    procedure, pass(sv) :: build   => amg_z_jac_solver_bld
+    procedure, pass(sv) :: cnv     => amg_z_jac_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_z_jac_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_z_jac_solver_apply
+    procedure, pass(sv) :: free    => z_jac_solver_free
+    procedure, pass(sv) :: cseti   => z_jac_solver_cseti
+    procedure, pass(sv) :: csetc   => z_jac_solver_csetc
+    procedure, pass(sv) :: csetr   => z_jac_solver_csetr
+    procedure, pass(sv) :: descr   => z_jac_solver_descr
+    procedure, pass(sv) :: default => z_jac_solver_default
+    procedure, pass(sv) :: sizeof  => z_jac_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => z_jac_solver_get_nzeros
+    procedure, nopass   :: get_wrksz  => z_jac_solver_get_wrksize
+    procedure, nopass   :: get_fmt    => z_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => z_jac_solver_get_id
+    procedure, nopass   :: is_iterative => z_jac_solver_is_iterative
+  end type amg_z_jac_solver_type
+
+  type, extends(amg_z_jac_solver_type) :: amg_z_l1_jac_solver_type
+  contains
+    procedure, pass(sv) :: build   => amg_z_l1_jac_solver_bld
+    procedure, pass(sv) :: descr   => z_l1_jac_solver_descr
+    procedure, nopass   :: get_fmt    => z_l1_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => z_l1_jac_solver_get_id
+  end type amg_z_l1_jac_solver_type
+
+
+  private :: z_jac_solver_bld, z_jac_solver_apply, &
+       &  z_jac_solver_free,   &
+       &  z_jac_solver_descr,  z_jac_solver_sizeof, &
+       &  z_jac_solver_default, z_jac_solver_dmp, &
+       &  z_jac_solver_apply_vect, z_jac_solver_get_nzeros, &
+       &  z_jac_solver_get_fmt, z_jac_solver_check,&
+       &  z_jac_solver_is_iterative, &
+       &  z_jac_solver_get_id, z_jac_solver_get_wrksize
+
+  interface 
+    subroutine amg_z_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+         & trans,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_z_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)             :: desc_data
+      class(amg_z_jac_solver_type), intent(inout) :: sv
+      type(psb_z_vect_type),intent(inout)         :: x
+      type(psb_z_vect_type),intent(inout)         :: y
+      complex(psb_dpk_),intent(in)                    :: alpha,beta
+      character(len=1),intent(in)                   :: trans
+      complex(psb_dpk_),target, intent(inout)         :: work(:)
+      type(psb_z_vect_type),intent(inout)         :: wv(:)
+      integer(psb_ipk_), intent(out)                :: info
+      character, intent(in), optional                :: init
+      type(psb_z_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_z_jac_solver_apply_vect
+  end interface
+
+  interface 
+    subroutine amg_z_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info,init,initu)
+      import :: psb_desc_type, amg_z_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)      :: desc_data
+      class(amg_z_jac_solver_type), intent(inout) :: sv
+      complex(psb_dpk_),intent(inout)         :: x(:)
+      complex(psb_dpk_),intent(inout)         :: y(:)
+      complex(psb_dpk_),intent(in)            :: alpha,beta
+      character(len=1),intent(in)           :: trans
+      complex(psb_dpk_),target, intent(inout) :: work(:)
+      integer(psb_ipk_), intent(out)        :: info
+      character, intent(in), optional       :: init
+      complex(psb_dpk_),intent(inout), optional :: initu(:)
+    end subroutine amg_z_jac_solver_apply
+  end interface
+
+  interface 
+    subroutine amg_z_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_z_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_zspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_z_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_zspmat_type), intent(in), target, optional :: b
+      class(psb_z_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_z_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_z_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_z_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_z_l1_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_zspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_z_l1_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_zspmat_type), intent(in), target, optional :: b
+      class(psb_z_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_z_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_z_l1_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_z_jac_solver_cnv(sv,info,amold,vmold,imold)
+      import :: amg_z_jac_solver_type, psb_dpk_, &
+           & psb_z_base_sparse_mat, psb_z_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      class(amg_z_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_z_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_z_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_z_jac_solver_cnv
+  end interface
+  
+  interface 
+    subroutine amg_z_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+      import :: psb_desc_type, amg_z_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type, &
+           & psb_ipk_
+      implicit none 
+      class(amg_z_jac_solver_type), intent(in) :: sv
+      type(psb_desc_type), intent(in)             :: desc
+      integer(psb_ipk_), intent(in)              :: level
+      integer(psb_ipk_), intent(out)             :: info
+      character(len=*), intent(in), optional     :: prefix, head
+      logical, optional, intent(in)              :: solver, global_num
+    end subroutine amg_z_jac_solver_dmp
+  end interface
+  
+  interface
+    subroutine amg_z_jac_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
+           & amg_z_base_solver_type, amg_z_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_z_jac_solver_type), intent(inout)               :: sv
+      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)              :: info
+    end subroutine amg_z_jac_solver_clone
+  end interface
+  
+!!$  interface
+!!$    subroutine amg_z_l1_jac_solver_clone(sv,svout,info)
+!!$      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+!!$           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
+!!$           & amg_z_base_solver_type, amg_z_l1_jac_solver_type, psb_ipk_
+!!$      Implicit None
+!!$      
+!!$      ! Arguments
+!!$      class(amg_z_l1_jac_solver_type), intent(inout)               :: sv
+!!$      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+!!$      integer(psb_ipk_), intent(out)              :: info
+!!$    end subroutine amg_z_l1_jac_solver_clone
+!!$  end interface
+
+  interface
+    subroutine amg_z_jac_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
+           & amg_z_base_solver_type, amg_z_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_z_jac_solver_type), intent(inout) :: sv
+      class(amg_z_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_z_jac_solver_clone_settings
+  end interface
+
+  interface
+    subroutine amg_z_jac_solver_clear_data(sv,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
+           & amg_z_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_z_jac_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_z_jac_solver_clear_data
+  end interface
+
+contains
+
+  subroutine z_jac_solver_default(sv)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv
+
+    sv%sweeps = ione
+    sv%eps    = dzero
+    
+    return
+  end subroutine z_jac_solver_default
+
+  subroutine z_jac_solver_check(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='z_jac_solver_check'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call amg_check_def(sv%sweeps,&
+         & 'Jacobi sweeps',ione,is_int_positive)
+
+    if (info /= psb_success_) goto 9999
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine z_jac_solver_check
+
+  subroutine z_jac_solver_cseti(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='z_jac_solver_cseti'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+    select case(psb_toupper(what))
+    case('SOLVER_SWEEPS')
+      sv%sweeps = val      
+    case default
+      call sv%amg_z_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_cseti
+
+  subroutine z_jac_solver_csetc(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv
+    character(len=*), intent(in)                  :: what 
+    character(len=*), intent(in)                  :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, ival
+    character(len=20)  :: name='z_jac_solver_csetc'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+
+    call sv%amg_z_base_solver_type%set(what,val,info,idx=idx)
+  
+    if (info /= psb_success_) then
+      info = psb_err_from_subroutine_
+      call psb_errpush(info, name)
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_csetc
+  
+  subroutine z_jac_solver_csetr(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    real(psb_dpk_), intent(in)                     :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='z_jac_solver_csetr'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    select case(psb_toupper(what))
+    case('SOLVER_EPS') 
+      sv%eps = val
+    case default
+      call sv%amg_z_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_csetr
+
+  subroutine z_jac_solver_free(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='z_jac_solver_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call sv%a%free()
+    if (allocated(sv%dv)) then
+      call sv%dv%free(info)
+      deallocate(sv%dv)
+    end if
+    if (allocated(sv%d)) deallocate(sv%d)
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_free
+
+  subroutine z_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_z_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_descr
+
+  function z_jac_solver_get_nzeros(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+    
+    val = 0 
+    val = val + sv%a%get_nzeros()
+    val = val + sv%dv%get_nrows()
+
+    return
+  end function z_jac_solver_get_nzeros
+
+  function z_jac_solver_sizeof(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = psb_sizeof_ip 
+    val = val + sv%a%sizeof()
+    val = val + sv%dv%sizeof()
+
+    return
+  end function z_jac_solver_sizeof
+
+  function z_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "Jacobi solver"
+  end function z_jac_solver_get_fmt
+
+  function z_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_jac_
+  end function z_jac_solver_get_id
+
+  !
+  ! If this is true, then the solver needs a starting
+  ! guess. Currently only handled in JAC smoother. 
+  ! 
+  function z_jac_solver_is_iterative() result(val)
+    implicit none 
+    logical  :: val
+
+    val = .true.
+  end function z_jac_solver_is_iterative
+    
+  function z_jac_solver_get_wrksize() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = 2
+  end function z_jac_solver_get_wrksize
+
+  subroutine z_l1_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_l1_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_z_l1_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_l1_jac_solver_descr
+
+  function z_l1_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "L1-Jacobi solver"
+  end function z_l1_jac_solver_get_fmt
+
+  function z_l1_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_l1_jac_
+  end function z_l1_jac_solver_get_id
+  
+end module amg_z_jac_solver

amgprec/amg_z_krm_solver.f90

@@ -436,7 +436,7 @@ contains
     val = "KRM solver"
   end function z_krm_solver_get_fmt
 
-  subroutine z_krm_solver_descr(sv,info,iout,coarse)
+  subroutine z_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -444,12 +444,14 @@ contains
     class(amg_z_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -458,23 +460,22 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_z_mumps_solver.F90

@@ -78,7 +78,8 @@ module amg_z_mumps_solver
     !
     ! Controls to be set before MUMPS instantiation:
     !
-    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: LOCAL   1==amg_global_solver_: GLOBAL
+    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: 'LOCAL_SOLVER
+    !                            1==amg_global_solver_: 'GLOBAL_SOLVER'
     ! IPAR(2) : MUMPS_PRINT_ERR  print verbosity (see MUMPS)
     ! IPAR(3) : MUMPS_SYM        0: non-symmetric   2: symmetric
     integer(psb_ipk_), dimension(3) :: ipar
@@ -313,22 +314,24 @@ subroutine z_mumps_solver_finalize(sv)
 
 end subroutine z_mumps_solver_finalize
 
-subroutine z_mumps_solver_descr(sv,info,iout,coarse)
+subroutine z_mumps_solver_descr(sv,info,iout,coarse,prefix)
 
   Implicit None
 
   ! Arguments
   class(amg_z_mumps_solver_type), intent(in) :: sv
-  integer(psb_ipk_), intent(out)                     :: info
-  integer(psb_ipk_), intent(in), optional            :: iout
-  logical, intent(in), optional       :: coarse
-
+  integer(psb_ipk_), intent(out)               :: info
+  integer(psb_ipk_), intent(in), optional      :: iout
+  logical, intent(in), optional                :: coarse
+  character(len=*), intent(in), optional       :: prefix
+      
   ! Local variables
   integer(psb_ipk_)   :: err_act
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: me, np
   character(len=20), parameter :: name='amg_z_mumps_solver_descr'
   integer(psb_ipk_) :: iout_
+  character(1024)    :: prefix_
 
   call psb_erractionsave(err_act)
   info = psb_success_
@@ -337,8 +340,13 @@ subroutine z_mumps_solver_descr(sv,info,iout,coarse)
   else
     iout_ = psb_out_unit
   endif
+  if (present(prefix)) then
+    prefix_ = prefix
+  else
+    prefix_ = ""
+  end if
 
-  write(iout_,*) '  MUMPS  Solver. '
+  write(iout_,*) trim(prefix_), '  MUMPS  Solver. '
 
   call psb_erractionrestore(err_act)
   return

amgprec/amg_z_onelev_mod.f90

@@ -187,8 +187,10 @@ module amg_z_onelev_mod
     procedure, pass(lv) :: clone   => z_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_z_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_z_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_z_base_onelev_memory_use
     procedure, pass(lv) :: default => z_base_onelev_default
     procedure, pass(lv) :: free    => amg_z_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_z_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => z_base_onelev_nullify
     procedure, pass(lv) :: check => amg_z_base_onelev_check
     procedure, pass(lv) :: dump  => amg_z_base_onelev_dump
@@ -257,7 +259,7 @@ module amg_z_onelev_mod
   end interface
 
   interface
-    subroutine amg_z_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
+    subroutine amg_z_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &
            & psb_zlinmap_type, psb_dpk_, amg_z_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
@@ -268,9 +270,27 @@ module amg_z_onelev_mod
       integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_z_base_onelev_descr
   end interface
 
+  interface
+    subroutine amg_z_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &
+           & psb_zlinmap_type, psb_dpk_, amg_z_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_z_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_z_base_onelev_memory_use
+  end interface
+
   interface
     subroutine amg_z_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_z_onelev_type, psb_z_base_vect_type, psb_dpk_, &
@@ -284,7 +304,7 @@ module amg_z_onelev_mod
     end subroutine amg_z_base_onelev_cnv
   end interface
 
-interface
+  interface
     subroutine amg_z_base_onelev_free(lv,info)
       import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &
            & psb_zlinmap_type, psb_dpk_, amg_z_onelev_type, &
@@ -296,6 +316,18 @@ interface
     end subroutine amg_z_base_onelev_free
   end interface
 
+  interface
+    subroutine amg_z_base_onelev_free_smoothers(lv,info)
+      import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &
+           & psb_zlinmap_type, psb_dpk_, amg_z_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_z_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_z_base_onelev_free_smoothers
+  end interface
+
   interface
     subroutine amg_z_base_onelev_check(lv,info)
       import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &

amgprec/amg_z_prec_type.f90

@@ -135,8 +135,11 @@ module amg_z_prec_type
     procedure, pass(prec)               :: build        => amg_zprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_z_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_z_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_z_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_z_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_z_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_zfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_zfile_prec_memory_use
   end type amg_zprec_type
 
   private :: amg_z_dump, amg_z_get_compl,  amg_z_cmp_compl,&
@@ -155,18 +158,35 @@ module amg_z_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_zfile_prec_descr(prec,info,iout,root,verbosity)
+    subroutine amg_zfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_zprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_zprec_type), intent(in)      :: prec
-      integer(psb_ipk_), intent(out) :: info
+      class(amg_zprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_zfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_zfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_zprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_zprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_zfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_zprec_sizeof
   end interface
@@ -344,6 +364,14 @@ module amg_z_prec_type
     end subroutine amg_z_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_z_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_z_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -617,6 +645,68 @@ contains
 
   end subroutine amg_z_prec_free
 
+  subroutine amg_z_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_zprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_z_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_z_smoothers_free
+
+  subroutine amg_z_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_zprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_z_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_z_hierarchy_free
 
 
   !