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psblas3/krylov/psb_srgmres.f90

521 lines
18 KiB
Fortran

psblas2-dev: Make.inc.in README base/comm/Makefile base/comm/psb_cgather.f90 base/comm/psb_chalo.f90 base/comm/psb_covrl.f90 base/comm/psb_sgather.f90 base/comm/psb_shalo.f90 base/comm/psb_sovrl.f90 base/internals/Makefile base/internals/psi_cswapdata.F90 base/internals/psi_cswaptran.F90 base/internals/psi_sswapdata.F90 base/internals/psi_sswaptran.F90 base/modules/Makefile base/modules/psb_blacs_mod.f90 base/modules/psb_comm_mod.f90 base/modules/psb_const_mod.f90 base/modules/psb_error_mod.F90 base/modules/psb_inter_desc_type.f90 base/modules/psb_penv_mod.F90 base/modules/psb_psblas_mod.f90 base/modules/psb_realloc_mod.F90 base/modules/psb_serial_mod.f90 base/modules/psb_sort_mod.f90 base/modules/psb_spmat_type.f90 base/modules/psb_spsb_mod.f90 base/modules/psb_string_mod.f90 base/modules/psb_tools_mod.f90 base/modules/psi_mod.f90 base/modules/psi_serial_mod.f90 base/psblas/Makefile base/psblas/psb_camax.f90 base/psblas/psb_casum.f90 base/psblas/psb_caxpby.f90 base/psblas/psb_cdot.f90 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base/serial/psb_sipcoo2csr.f90 base/serial/psb_sipcsr2coo.f90 base/serial/psb_sneigh.f90 base/serial/psb_snumbmm.f90 base/serial/psb_srwextd.f90 base/serial/psb_sspclip.f90 base/serial/psb_sspcnv.f90 base/serial/psb_sspgetrow.f90 base/serial/psb_sspgtblk.f90 base/serial/psb_sspgtdiag.f90 base/serial/psb_sspscal.f90 base/serial/psb_ssymbmm.f90 base/serial/psb_stransp.f90 base/serial/psb_update_mod.f90 base/serial/psb_zcoins.f90 base/serial/psb_zcsnmi.f90 base/serial/psb_zspcnv.f90 base/tools/Makefile base/tools/psb_callc.f90 base/tools/psb_casb.f90 base/tools/psb_ccdbldext.F90 base/tools/psb_cfree.f90 base/tools/psb_cins.f90 base/tools/psb_cspalloc.f90 base/tools/psb_cspasb.f90 base/tools/psb_cspfree.f90 base/tools/psb_csphalo.F90 base/tools/psb_cspins.f90 base/tools/psb_csprn.f90 base/tools/psb_dspins.f90 base/tools/psb_sallc.f90 base/tools/psb_sasb.f90 base/tools/psb_scdbldext.F90 base/tools/psb_sfree.f90 base/tools/psb_sins.f90 base/tools/psb_sspalloc.f90 base/tools/psb_sspasb.f90 base/tools/psb_sspfree.f90 base/tools/psb_ssphalo.F90 base/tools/psb_sspins.f90 base/tools/psb_ssprn.f90 base/tools/psb_zspins.f90 config/acx_lapack.m4 configure.ac configure krylov/Makefile krylov/psb_cbicg.f90 krylov/psb_ccg.f90 krylov/psb_ccgs.f90 krylov/psb_ccgstab.f90 krylov/psb_ccgstabl.f90 krylov/psb_crgmres.f90 krylov/psb_dcg.F90 krylov/psb_dcg.f90 krylov/psb_krylov_mod.f90 krylov/psb_sbicg.f90 krylov/psb_scg.F90 krylov/psb_scgs.f90 krylov/psb_scgstab.F90 krylov/psb_scgstabl.f90 krylov/psb_srgmres.f90 krylov/psb_zcg.F90 krylov/psb_zcg.f90 prec/Makefile prec/psb_cbjac_aply.f90 prec/psb_cbjac_bld.f90 prec/psb_cdiagsc_bld.f90 prec/psb_cgprec_aply.f90 prec/psb_cilu_fct.f90 prec/psb_cprc_aply.f90 prec/psb_cprecbld.f90 prec/psb_cprecinit.f90 prec/psb_cprecset.f90 prec/psb_prec_mod.f90 prec/psb_prec_type.f90 prec/psb_sbjac_aply.f90 prec/psb_sbjac_bld.f90 prec/psb_sdiagsc_bld.f90 prec/psb_sgprec_aply.f90 prec/psb_silu_fct.f90 prec/psb_sprc_aply.f90 prec/psb_sprecbld.f90 prec/psb_sprecinit.f90 prec/psb_sprecset.f90 test/fileread/Makefile test/fileread/cf_sample.f90 test/fileread/df_sample.f90 test/fileread/getp.f90 test/fileread/runs/cfs.inp test/fileread/runs/sfs.inp test/fileread/sf_sample.f90 test/fileread/zf_sample.f90 test/pargen/Makefile test/pargen/ppde.f90 test/pargen/runs/ppde.inp test/pargen/spde.f90 util/psb_hbio_mod.f90 util/psb_mat_dist_mod.f90 util/psb_mmio_mod.f90 util/psb_read_mat_mod.f90 Merged the single precision branch.
17 years ago
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$
!!$ Contributions to this routine:
!!$ Daniela di Serafino Second University of Naples
!!$ Pasqua D'Ambra ICAR-CNR
!!$
!!$ 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 PSBLAS 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 PSBLAS 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.
!!$
!!$
!!$ CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
!!$ C C
!!$ C References: C
!!$ C [1] Duff, I., Marrone, M., Radicati, G., and Vittoli, C. C
!!$ C Level 3 basic linear algebra subprograms for sparse C
!!$ C matrices: a user level interface C
!!$ C ACM Trans. Math. Softw., 23(3), 379-401, 1997. C
!!$ C C
!!$ C C
!!$ C [2] S. Filippone, M. Colajanni C
!!$ C PSBLAS: A library for parallel linear algebra C
!!$ C computation on sparse matrices C
!!$ C ACM Trans. on Math. Softw., 26(4), 527-550, Dec. 2000. C
!!$ C C
!!$ C [3] M. Arioli, I. Duff, M. Ruiz C
!!$ C Stopping criteria for iterative solvers C
!!$ C SIAM J. Matrix Anal. Appl., Vol. 13, pp. 138-144, 1992 C
!!$ C C
!!$ C C
!!$ C [4] R. Barrett et al C
!!$ C Templates for the solution of linear systems C
!!$ C SIAM, 1993 C
!!$ C C
!!$ C C
!!$ C [5] G. Sleijpen, D. Fokkema C
!!$ C BICGSTAB(L) for linear equations involving unsymmetric C
!!$ C matrices with complex spectrum C
!!$ C Electronic Trans. on Numer. Analysis, Vol. 1, pp. 11-32, C
!!$ C Sep. 1993 C
!!$ C C
!!$ C C
!!$ CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
! File: psb_srgmres.f90
!
! Subroutine: psb_srgmres
! This subroutine implements the restarted GMRES method with right
! preconditioning.
!
! Arguments:
!
! a - type(psb_sspmat_type) Input: sparse matrix containing A.
! prec - type(psb_sprec_type) Input: preconditioner
! b - real,dimension(:) Input: vector containing the
! right hand side B
! x - real,dimension(:) Input/Output: vector containing the
! initial guess and final solution X.
! eps - real Input: Stopping tolerance; the iteration is
! stopped when the error estimate |err| <= eps
! desc_a - type(psb_desc_type). Input: The communication descriptor.
! info - integer. Output: Return code
!
! itmax - integer(optional) Input: maximum number of iterations to be
! performed.
! iter - integer(optional) Output: how many iterations have been
! performed.
! performed.
! err - real (optional) Output: error estimate on exit. If the
! denominator of the estimate is exactly
! 0, it is changed into 1.
! itrace - integer(optional) Input: print an informational message
! with the error estimate every itrace
! iterations
! istop - integer(optional) Input: stopping criterion, or how
! to estimate the error.
! 1: err = |r|/|b|; here the iteration is
! stopped when |r| <= eps * |b|
! 2: err = |r|/(|a||x|+|b|); here the iteration is
! stopped when |r| <= eps * (|a||x|+|b|)
! where r is the (preconditioned, recursive
! estimate of) residual.
! irst - integer(optional) Input: restart parameter
!
!
subroutine psb_srgmres(a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop)
use psb_base_mod
use psb_prec_mod
use psb_krylov_mod, psb_protect_name => psb_srgmres
implicit none
!!$ Parameters
Type(psb_sspmat_type), Intent(in) :: a
Type(psb_sprec_type), Intent(in) :: prec
Type(psb_desc_type), Intent(in) :: desc_a
Real(psb_spk_), Intent(in) :: b(:)
Real(psb_spk_), Intent(inout) :: x(:)
Real(psb_spk_), Intent(in) :: eps
integer, intent(out) :: info
Integer, Optional, Intent(in) :: itmax, itrace, irst,istop
Integer, Optional, Intent(out) :: iter
Real(psb_spk_), Optional, Intent(out) :: err
!!$ local data
Real(psb_spk_), allocatable, target :: aux(:),w(:),w1(:), v(:,:)
Real(psb_spk_), allocatable :: c(:),s(:), h(:,:), rs(:),rst(:),xt(:)
Real(psb_spk_) :: scal, gm, rti, rti1
Integer ::litmax, naux, mglob, it,k, itrace_,&
& np,me, n_row, n_col, nl, int_err(5)
Logical, Parameter :: exchange=.True., noexchange=.False., use_srot=.true.
psblas2-dev: Make.inc.in README base/comm/Makefile base/comm/psb_cgather.f90 base/comm/psb_chalo.f90 base/comm/psb_covrl.f90 base/comm/psb_sgather.f90 base/comm/psb_shalo.f90 base/comm/psb_sovrl.f90 base/internals/Makefile base/internals/psi_cswapdata.F90 base/internals/psi_cswaptran.F90 base/internals/psi_sswapdata.F90 base/internals/psi_sswaptran.F90 base/modules/Makefile base/modules/psb_blacs_mod.f90 base/modules/psb_comm_mod.f90 base/modules/psb_const_mod.f90 base/modules/psb_error_mod.F90 base/modules/psb_inter_desc_type.f90 base/modules/psb_penv_mod.F90 base/modules/psb_psblas_mod.f90 base/modules/psb_realloc_mod.F90 base/modules/psb_serial_mod.f90 base/modules/psb_sort_mod.f90 base/modules/psb_spmat_type.f90 base/modules/psb_spsb_mod.f90 base/modules/psb_string_mod.f90 base/modules/psb_tools_mod.f90 base/modules/psi_mod.f90 base/modules/psi_serial_mod.f90 base/psblas/Makefile base/psblas/psb_camax.f90 base/psblas/psb_casum.f90 base/psblas/psb_caxpby.f90 base/psblas/psb_cdot.f90 base/psblas/psb_cnrm2.f90 base/psblas/psb_cnrmi.f90 base/psblas/psb_cspmm.f90 base/psblas/psb_cspsm.f90 base/psblas/psb_dnrmi.f90 base/psblas/psb_samax.f90 base/psblas/psb_sasum.f90 base/psblas/psb_saxpby.f90 base/psblas/psb_sdot.f90 base/psblas/psb_snrm2.f90 base/psblas/psb_snrmi.f90 base/psblas/psb_sspmm.f90 base/psblas/psb_sspsm.f90 base/psblas/psb_sxdot.f90 base/psblas/psb_zaxpby.f90 base/psblas/psb_znrmi.f90 base/psblas/pstreecomb.F base/serial/Makefile base/serial/aux/Makefile base/serial/aux/cacmp_mod.f90 base/serial/aux/calcmp_mod.f90 base/serial/aux/calsr.f90 base/serial/aux/calsrx.f90 base/serial/aux/camsort_dw.f90 base/serial/aux/camsort_up.f90 base/serial/aux/camsr.f90 base/serial/aux/camsrx.f90 base/serial/aux/casr.f90 base/serial/aux/casrx.f90 base/serial/aux/clcmp_mod.f90 base/serial/aux/clsr.f90 base/serial/aux/clsrx.f90 base/serial/aux/sasr.f90 base/serial/aux/sasrx.f90 base/serial/aux/smsort_dw.f90 base/serial/aux/smsort_up.f90 base/serial/aux/smsr.f90 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base/serial/f77/dcsrp.f base/serial/f77/dcsrws.f base/serial/f77/dcssm.f base/serial/f77/dgelp.f base/serial/f77/dlpupd.f base/serial/f77/dswmm.f base/serial/f77/dswsm.f base/serial/f77/saxpby.f base/serial/f77/scsmm.f base/serial/f77/scsnmi.f base/serial/f77/scsrws.f base/serial/f77/scssm.f base/serial/f77/sgelp.f base/serial/f77/slpupd.f base/serial/f77/smmp.f base/serial/f77/sswmm.f base/serial/f77/sswsm.f base/serial/f77/zcsmm.f base/serial/f77/zcsnmi.f base/serial/f77/zcsrws.f base/serial/f77/zcssm.f base/serial/f77/zgelp.f base/serial/f77/zlpupd.f base/serial/f77/zswmm.f base/serial/f77/zswsm.f base/serial/jad/Makefile base/serial/jad/sjadmm.f base/serial/jad/sjadmv.f base/serial/jad/sjadmv2.f base/serial/jad/sjadmv3.f base/serial/jad/sjadmv4.f base/serial/jad/sjadnr.f base/serial/jad/sjadrws.f base/serial/jad/sjadsm.f base/serial/jad/sjadsv.f base/serial/jad/sjdnrmi.f base/serial/jad/sjdrws.f base/serial/psb_ccoins.f90 base/serial/psb_ccsmm.f90 base/serial/psb_ccsmv.f90 base/serial/psb_ccsnmi.f90 base/serial/psb_ccsprt.f90 base/serial/psb_ccssm.f90 base/serial/psb_ccssv.f90 base/serial/psb_cfixcoo.f90 base/serial/psb_cgelp.f90 base/serial/psb_cipcoo2csc.f90 base/serial/psb_cipcoo2csr.f90 base/serial/psb_cipcsr2coo.f90 base/serial/psb_cneigh.f90 base/serial/psb_cnumbmm.f90 base/serial/psb_crwextd.f90 base/serial/psb_cspclip.f90 base/serial/psb_cspcnv.f90 base/serial/psb_cspgetrow.f90 base/serial/psb_cspgtblk.f90 base/serial/psb_cspgtdiag.f90 base/serial/psb_cspscal.f90 base/serial/psb_csymbmm.f90 base/serial/psb_ctransc.f90 base/serial/psb_ctransp.f90 base/serial/psb_dcoins.f90 base/serial/psb_dspcnv.f90 base/serial/psb_getrow_mod.f90 base/serial/psb_regen_mod.f90 base/serial/psb_scoins.f90 base/serial/psb_scsmm.f90 base/serial/psb_scsmv.f90 base/serial/psb_scsnmi.f90 base/serial/psb_scsprt.f90 base/serial/psb_scssm.f90 base/serial/psb_scssv.f90 base/serial/psb_sfixcoo.f90 base/serial/psb_sgelp.f90 base/serial/psb_sipcoo2csc.f90 base/serial/psb_sipcoo2csr.f90 base/serial/psb_sipcsr2coo.f90 base/serial/psb_sneigh.f90 base/serial/psb_snumbmm.f90 base/serial/psb_srwextd.f90 base/serial/psb_sspclip.f90 base/serial/psb_sspcnv.f90 base/serial/psb_sspgetrow.f90 base/serial/psb_sspgtblk.f90 base/serial/psb_sspgtdiag.f90 base/serial/psb_sspscal.f90 base/serial/psb_ssymbmm.f90 base/serial/psb_stransp.f90 base/serial/psb_update_mod.f90 base/serial/psb_zcoins.f90 base/serial/psb_zcsnmi.f90 base/serial/psb_zspcnv.f90 base/tools/Makefile base/tools/psb_callc.f90 base/tools/psb_casb.f90 base/tools/psb_ccdbldext.F90 base/tools/psb_cfree.f90 base/tools/psb_cins.f90 base/tools/psb_cspalloc.f90 base/tools/psb_cspasb.f90 base/tools/psb_cspfree.f90 base/tools/psb_csphalo.F90 base/tools/psb_cspins.f90 base/tools/psb_csprn.f90 base/tools/psb_dspins.f90 base/tools/psb_sallc.f90 base/tools/psb_sasb.f90 base/tools/psb_scdbldext.F90 base/tools/psb_sfree.f90 base/tools/psb_sins.f90 base/tools/psb_sspalloc.f90 base/tools/psb_sspasb.f90 base/tools/psb_sspfree.f90 base/tools/psb_ssphalo.F90 base/tools/psb_sspins.f90 base/tools/psb_ssprn.f90 base/tools/psb_zspins.f90 config/acx_lapack.m4 configure.ac configure krylov/Makefile krylov/psb_cbicg.f90 krylov/psb_ccg.f90 krylov/psb_ccgs.f90 krylov/psb_ccgstab.f90 krylov/psb_ccgstabl.f90 krylov/psb_crgmres.f90 krylov/psb_dcg.F90 krylov/psb_dcg.f90 krylov/psb_krylov_mod.f90 krylov/psb_sbicg.f90 krylov/psb_scg.F90 krylov/psb_scgs.f90 krylov/psb_scgstab.F90 krylov/psb_scgstabl.f90 krylov/psb_srgmres.f90 krylov/psb_zcg.F90 krylov/psb_zcg.f90 prec/Makefile prec/psb_cbjac_aply.f90 prec/psb_cbjac_bld.f90 prec/psb_cdiagsc_bld.f90 prec/psb_cgprec_aply.f90 prec/psb_cilu_fct.f90 prec/psb_cprc_aply.f90 prec/psb_cprecbld.f90 prec/psb_cprecinit.f90 prec/psb_cprecset.f90 prec/psb_prec_mod.f90 prec/psb_prec_type.f90 prec/psb_sbjac_aply.f90 prec/psb_sbjac_bld.f90 prec/psb_sdiagsc_bld.f90 prec/psb_sgprec_aply.f90 prec/psb_silu_fct.f90 prec/psb_sprc_aply.f90 prec/psb_sprecbld.f90 prec/psb_sprecinit.f90 prec/psb_sprecset.f90 test/fileread/Makefile test/fileread/cf_sample.f90 test/fileread/df_sample.f90 test/fileread/getp.f90 test/fileread/runs/cfs.inp test/fileread/runs/sfs.inp test/fileread/sf_sample.f90 test/fileread/zf_sample.f90 test/pargen/Makefile test/pargen/ppde.f90 test/pargen/runs/ppde.inp test/pargen/spde.f90 util/psb_hbio_mod.f90 util/psb_mat_dist_mod.f90 util/psb_mmio_mod.f90 util/psb_read_mat_mod.f90 Merged the single precision branch.
17 years ago
Integer, Parameter :: irmax = 8
Integer :: itx, i, isvch, ictxt,istop_, err_act
integer :: debug_level, debug_unit
Real(psb_spk_) :: rni, xni, bni, ani,bn2, dt
real(psb_dpk_) :: errnum, errden, deps, derr
character(len=20) :: name
character(len=*), parameter :: methdname='RGMRES'
info = 0
name = 'psb_sgmres'
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_a)
Call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_ext_)&
& write(debug_unit,*) me,' ',trim(name),': from psb_info',np
mglob = psb_cd_get_global_rows(desc_a)
n_row = psb_cd_get_local_rows(desc_a)
n_col = psb_cd_get_local_cols(desc_a)
if (present(istop)) then
istop_ = istop
else
istop_ = 1
endif
!
! ISTOP_ = 1: Normwise backward error, infinity norm
! ISTOP_ = 2: ||r||/||b||, 2-norm
!
if ((istop_ < 1 ).or.(istop_ > 2 ) ) then
info=5001
int_err(1)=istop_
err=info
call psb_errpush(info,name,i_err=int_err)
goto 9999
endif
if (present(itmax)) then
litmax = itmax
else
litmax = 1000
endif
if (present(itrace)) then
itrace_ = itrace
else
itrace_ = 0
end if
if (present(irst)) then
nl = irst
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' present: irst: ',irst,nl
else
nl = 10
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' not present: irst: ',irst,nl
endif
if (nl <=0 ) then
info=5001
int_err(1)=nl
err=info
call psb_errpush(info,name,i_err=int_err)
goto 9999
endif
call psb_chkvect(mglob,1,size(x,1),1,1,desc_a,info)
if(info /= 0) then
info=4010
call psb_errpush(info,name,a_err='psb_chkvect on X')
goto 9999
end if
call psb_chkvect(mglob,1,size(b,1),1,1,desc_a,info)
if(info /= 0) then
info=4010
call psb_errpush(info,name,a_err='psb_chkvect on B')
goto 9999
end if
naux=4*n_col
allocate(aux(naux),h(nl+1,nl+1),&
&c(nl+1),s(nl+1),rs(nl+1), rst(nl+1),stat=info)
if (info == 0) call psb_geall(v,desc_a,info,n=nl+1)
if (info == 0) call psb_geall(w,desc_a,info)
if (info == 0) call psb_geall(w1,desc_a,info)
if (info == 0) call psb_geall(xt,desc_a,info)
if (info == 0) call psb_geasb(v,desc_a,info)
if (info == 0) call psb_geasb(w,desc_a,info)
if (info == 0) call psb_geasb(w1,desc_a,info)
if (info == 0) call psb_geasb(xt,desc_a,info)
if (info /= 0) then
info=4011
call psb_errpush(info,name)
goto 9999
end if
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Size of V,W,W1 ',size(v),size(v,1),&
& size(w),size(w,1),size(w1),size(w1,1), size(v(:,1))
! Ensure global coherence for convergence checks.
call psb_set_coher(ictxt,isvch)
if (istop_ == 1) then
ani = psb_spnrmi(a,desc_a,info)
bni = psb_geamax(b,desc_a,info)
else if (istop_ == 2) then
bn2 = psb_genrm2(b,desc_a,info)
endif
errnum = dzero
errden = done
deps = eps
if (info /= 0) then
info=4011
call psb_errpush(info,name)
goto 9999
end if
if ((itrace_ > 0).and.(me==0)) call log_header(methdname)
itx = 0
restart: do
! compute r0 = b-ax0
! check convergence
! compute v1 = r0/||r0||_2
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' restart: ',itx,it
it = 0
call psb_geaxpby(sone,b,szero,v(:,1),desc_a,info)
if (info /= 0) then
info=4011
call psb_errpush(info,name)
goto 9999
end if
call psb_spmm(-sone,a,x,sone,v(:,1),desc_a,info,work=aux)
if (info /= 0) then
info=4011
call psb_errpush(info,name)
goto 9999
end if
rs(1) = psb_genrm2(v(:,1),desc_a,info)
rs(2:) = szero
if (info /= 0) then
info=4011
call psb_errpush(info,name)
goto 9999
end if
scal=sone/rs(1) ! rs(1) MIGHT BE VERY SMALL - USE DSCAL TO DEAL WITH IT?
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' on entry to amax: b: ',Size(b),rs(1),scal
!
! check convergence
!
if (istop_ == 1) then
rni = psb_geamax(v(:,1),desc_a,info)
xni = psb_geamax(x,desc_a,info)
errnum = rni
errden = (ani*xni+bni)
else if (istop_ == 2) then
rni = psb_genrm2(v(:,1),desc_a,info)
errnum = rni
errden = bn2
endif
if (info /= 0) then
info=4011
call psb_errpush(info,name)
goto 9999
end if
if (errnum <= eps*errden) exit restart
if (itrace_ > 0) &
& call log_conv(methdname,me,itx,itrace_,errnum,errden,deps)
v(:,1) = v(:,1) * scal
if (itx >= litmax) exit restart
!
! inner iterations
!
inner: Do i=1,nl
itx = itx + 1
call psb_precaply(prec,v(:,i),w1,desc_a,info)
call psb_spmm(sone,a,w1,szero,w,desc_a,info,work=aux)
!
do k = 1, i
h(k,i) = psb_gedot(v(:,k),w,desc_a,info)
call psb_geaxpby(-h(k,i),v(:,k),sone,w,desc_a,info)
end do
h(i+1,i) = psb_genrm2(w,desc_a,info)
scal=sone/h(i+1,i)
call psb_geaxpby(scal,w,szero,v(:,i+1),desc_a,info)
if (use_srot) then
psblas2-dev: Make.inc.in README base/comm/Makefile base/comm/psb_cgather.f90 base/comm/psb_chalo.f90 base/comm/psb_covrl.f90 base/comm/psb_sgather.f90 base/comm/psb_shalo.f90 base/comm/psb_sovrl.f90 base/internals/Makefile base/internals/psi_cswapdata.F90 base/internals/psi_cswaptran.F90 base/internals/psi_sswapdata.F90 base/internals/psi_sswaptran.F90 base/modules/Makefile base/modules/psb_blacs_mod.f90 base/modules/psb_comm_mod.f90 base/modules/psb_const_mod.f90 base/modules/psb_error_mod.F90 base/modules/psb_inter_desc_type.f90 base/modules/psb_penv_mod.F90 base/modules/psb_psblas_mod.f90 base/modules/psb_realloc_mod.F90 base/modules/psb_serial_mod.f90 base/modules/psb_sort_mod.f90 base/modules/psb_spmat_type.f90 base/modules/psb_spsb_mod.f90 base/modules/psb_string_mod.f90 base/modules/psb_tools_mod.f90 base/modules/psi_mod.f90 base/modules/psi_serial_mod.f90 base/psblas/Makefile base/psblas/psb_camax.f90 base/psblas/psb_casum.f90 base/psblas/psb_caxpby.f90 base/psblas/psb_cdot.f90 base/psblas/psb_cnrm2.f90 base/psblas/psb_cnrmi.f90 base/psblas/psb_cspmm.f90 base/psblas/psb_cspsm.f90 base/psblas/psb_dnrmi.f90 base/psblas/psb_samax.f90 base/psblas/psb_sasum.f90 base/psblas/psb_saxpby.f90 base/psblas/psb_sdot.f90 base/psblas/psb_snrm2.f90 base/psblas/psb_snrmi.f90 base/psblas/psb_sspmm.f90 base/psblas/psb_sspsm.f90 base/psblas/psb_sxdot.f90 base/psblas/psb_zaxpby.f90 base/psblas/psb_znrmi.f90 base/psblas/pstreecomb.F base/serial/Makefile base/serial/aux/Makefile base/serial/aux/cacmp_mod.f90 base/serial/aux/calcmp_mod.f90 base/serial/aux/calsr.f90 base/serial/aux/calsrx.f90 base/serial/aux/camsort_dw.f90 base/serial/aux/camsort_up.f90 base/serial/aux/camsr.f90 base/serial/aux/camsrx.f90 base/serial/aux/casr.f90 base/serial/aux/casrx.f90 base/serial/aux/clcmp_mod.f90 base/serial/aux/clsr.f90 base/serial/aux/clsrx.f90 base/serial/aux/sasr.f90 base/serial/aux/sasrx.f90 base/serial/aux/smsort_dw.f90 base/serial/aux/smsort_up.f90 base/serial/aux/smsr.f90 base/serial/aux/smsrx.f90 base/serial/aux/ssr.f90 base/serial/aux/ssrx.f90 base/serial/coo/Makefile base/serial/coo/ccoomm.f base/serial/coo/ccoomv.f base/serial/coo/ccoonrmi.f base/serial/coo/ccoorws.f base/serial/coo/ccoosm.f base/serial/coo/ccoosv.f base/serial/coo/dcoosm.f base/serial/coo/scoomm.f base/serial/coo/scoomv.f base/serial/coo/scoonrmi.f base/serial/coo/scoorws.f base/serial/coo/scoosm.f base/serial/coo/scoosv.f base/serial/coo/zcoosm.f base/serial/csr/Makefile base/serial/csr/ccrnrmi.f base/serial/csr/ccsrck.f base/serial/csr/ccsrmm.f base/serial/csr/ccsrrws.f base/serial/csr/ccsrsm.f base/serial/csr/csrmv.f base/serial/csr/csrsv.f base/serial/csr/dcsrck.f base/serial/csr/dcsrmm.f base/serial/csr/dcsrmv.f base/serial/csr/dcsrmv2.f base/serial/csr/dcsrmv3.f base/serial/csr/dcsrmv4.f base/serial/csr/dcsrrws.f base/serial/csr/dcsrsm.f base/serial/csr/dcsrsv.f base/serial/csr/scrnrmi.f base/serial/csr/scsrmm.f base/serial/csr/scsrmv.f base/serial/csr/scsrmv2.f base/serial/csr/scsrmv3.f base/serial/csr/scsrmv4.f base/serial/csr/scsrsm.f base/serial/csr/scsrsv.f base/serial/csr/zcrnrmi.f base/serial/csr/zcsrck.f base/serial/csr/zcsrmm.f base/serial/csr/zcsrrws.f base/serial/csr/zcsrsm.f base/serial/csr/zsrmv.f base/serial/csr/zsrsv.f base/serial/dp/Makefile base/serial/dp/ccoco.f base/serial/dp/ccocr.f base/serial/dp/ccrco.f base/serial/dp/ccrcr.f base/serial/dp/ccrjd.f base/serial/dp/cgind_tri.f base/serial/dp/cgindex.f base/serial/dp/reordvn.f base/serial/dp/scoco.f base/serial/dp/scocr.f base/serial/dp/scrco.f base/serial/dp/scrcr.f base/serial/dp/scrjd.f base/serial/dp/sgind_tri.f base/serial/dp/sgindex.f base/serial/f77/Makefile base/serial/f77/caxpby.f base/serial/f77/ccsmm.f base/serial/f77/ccsnmi.f base/serial/f77/ccsrws.f base/serial/f77/ccssm.f base/serial/f77/cgelp.f base/serial/f77/clpupd.f base/serial/f77/cswmm.f base/serial/f77/cswsm.f base/serial/f77/daxpby.f base/serial/f77/dcsmm.f base/serial/f77/dcsnmi.f base/serial/f77/dcsrp.f base/serial/f77/dcsrws.f base/serial/f77/dcssm.f base/serial/f77/dgelp.f base/serial/f77/dlpupd.f base/serial/f77/dswmm.f base/serial/f77/dswsm.f base/serial/f77/saxpby.f base/serial/f77/scsmm.f base/serial/f77/scsnmi.f base/serial/f77/scsrws.f base/serial/f77/scssm.f base/serial/f77/sgelp.f base/serial/f77/slpupd.f base/serial/f77/smmp.f base/serial/f77/sswmm.f base/serial/f77/sswsm.f base/serial/f77/zcsmm.f base/serial/f77/zcsnmi.f base/serial/f77/zcsrws.f base/serial/f77/zcssm.f base/serial/f77/zgelp.f base/serial/f77/zlpupd.f base/serial/f77/zswmm.f base/serial/f77/zswsm.f base/serial/jad/Makefile base/serial/jad/sjadmm.f base/serial/jad/sjadmv.f base/serial/jad/sjadmv2.f base/serial/jad/sjadmv3.f base/serial/jad/sjadmv4.f base/serial/jad/sjadnr.f base/serial/jad/sjadrws.f base/serial/jad/sjadsm.f base/serial/jad/sjadsv.f base/serial/jad/sjdnrmi.f base/serial/jad/sjdrws.f base/serial/psb_ccoins.f90 base/serial/psb_ccsmm.f90 base/serial/psb_ccsmv.f90 base/serial/psb_ccsnmi.f90 base/serial/psb_ccsprt.f90 base/serial/psb_ccssm.f90 base/serial/psb_ccssv.f90 base/serial/psb_cfixcoo.f90 base/serial/psb_cgelp.f90 base/serial/psb_cipcoo2csc.f90 base/serial/psb_cipcoo2csr.f90 base/serial/psb_cipcsr2coo.f90 base/serial/psb_cneigh.f90 base/serial/psb_cnumbmm.f90 base/serial/psb_crwextd.f90 base/serial/psb_cspclip.f90 base/serial/psb_cspcnv.f90 base/serial/psb_cspgetrow.f90 base/serial/psb_cspgtblk.f90 base/serial/psb_cspgtdiag.f90 base/serial/psb_cspscal.f90 base/serial/psb_csymbmm.f90 base/serial/psb_ctransc.f90 base/serial/psb_ctransp.f90 base/serial/psb_dcoins.f90 base/serial/psb_dspcnv.f90 base/serial/psb_getrow_mod.f90 base/serial/psb_regen_mod.f90 base/serial/psb_scoins.f90 base/serial/psb_scsmm.f90 base/serial/psb_scsmv.f90 base/serial/psb_scsnmi.f90 base/serial/psb_scsprt.f90 base/serial/psb_scssm.f90 base/serial/psb_scssv.f90 base/serial/psb_sfixcoo.f90 base/serial/psb_sgelp.f90 base/serial/psb_sipcoo2csc.f90 base/serial/psb_sipcoo2csr.f90 base/serial/psb_sipcsr2coo.f90 base/serial/psb_sneigh.f90 base/serial/psb_snumbmm.f90 base/serial/psb_srwextd.f90 base/serial/psb_sspclip.f90 base/serial/psb_sspcnv.f90 base/serial/psb_sspgetrow.f90 base/serial/psb_sspgtblk.f90 base/serial/psb_sspgtdiag.f90 base/serial/psb_sspscal.f90 base/serial/psb_ssymbmm.f90 base/serial/psb_stransp.f90 base/serial/psb_update_mod.f90 base/serial/psb_zcoins.f90 base/serial/psb_zcsnmi.f90 base/serial/psb_zspcnv.f90 base/tools/Makefile base/tools/psb_callc.f90 base/tools/psb_casb.f90 base/tools/psb_ccdbldext.F90 base/tools/psb_cfree.f90 base/tools/psb_cins.f90 base/tools/psb_cspalloc.f90 base/tools/psb_cspasb.f90 base/tools/psb_cspfree.f90 base/tools/psb_csphalo.F90 base/tools/psb_cspins.f90 base/tools/psb_csprn.f90 base/tools/psb_dspins.f90 base/tools/psb_sallc.f90 base/tools/psb_sasb.f90 base/tools/psb_scdbldext.F90 base/tools/psb_sfree.f90 base/tools/psb_sins.f90 base/tools/psb_sspalloc.f90 base/tools/psb_sspasb.f90 base/tools/psb_sspfree.f90 base/tools/psb_ssphalo.F90 base/tools/psb_sspins.f90 base/tools/psb_ssprn.f90 base/tools/psb_zspins.f90 config/acx_lapack.m4 configure.ac configure krylov/Makefile krylov/psb_cbicg.f90 krylov/psb_ccg.f90 krylov/psb_ccgs.f90 krylov/psb_ccgstab.f90 krylov/psb_ccgstabl.f90 krylov/psb_crgmres.f90 krylov/psb_dcg.F90 krylov/psb_dcg.f90 krylov/psb_krylov_mod.f90 krylov/psb_sbicg.f90 krylov/psb_scg.F90 krylov/psb_scgs.f90 krylov/psb_scgstab.F90 krylov/psb_scgstabl.f90 krylov/psb_srgmres.f90 krylov/psb_zcg.F90 krylov/psb_zcg.f90 prec/Makefile prec/psb_cbjac_aply.f90 prec/psb_cbjac_bld.f90 prec/psb_cdiagsc_bld.f90 prec/psb_cgprec_aply.f90 prec/psb_cilu_fct.f90 prec/psb_cprc_aply.f90 prec/psb_cprecbld.f90 prec/psb_cprecinit.f90 prec/psb_cprecset.f90 prec/psb_prec_mod.f90 prec/psb_prec_type.f90 prec/psb_sbjac_aply.f90 prec/psb_sbjac_bld.f90 prec/psb_sdiagsc_bld.f90 prec/psb_sgprec_aply.f90 prec/psb_silu_fct.f90 prec/psb_sprc_aply.f90 prec/psb_sprecbld.f90 prec/psb_sprecinit.f90 prec/psb_sprecset.f90 test/fileread/Makefile test/fileread/cf_sample.f90 test/fileread/df_sample.f90 test/fileread/getp.f90 test/fileread/runs/cfs.inp test/fileread/runs/sfs.inp test/fileread/sf_sample.f90 test/fileread/zf_sample.f90 test/pargen/Makefile test/pargen/ppde.f90 test/pargen/runs/ppde.inp test/pargen/spde.f90 util/psb_hbio_mod.f90 util/psb_mat_dist_mod.f90 util/psb_mmio_mod.f90 util/psb_read_mat_mod.f90 Merged the single precision branch.
17 years ago
do k=2,i
call srot(1,h(k-1,i),1,h(k,i),1,c(k-1),s(k-1))
psblas2-dev: Make.inc.in README base/comm/Makefile base/comm/psb_cgather.f90 base/comm/psb_chalo.f90 base/comm/psb_covrl.f90 base/comm/psb_sgather.f90 base/comm/psb_shalo.f90 base/comm/psb_sovrl.f90 base/internals/Makefile base/internals/psi_cswapdata.F90 base/internals/psi_cswaptran.F90 base/internals/psi_sswapdata.F90 base/internals/psi_sswaptran.F90 base/modules/Makefile base/modules/psb_blacs_mod.f90 base/modules/psb_comm_mod.f90 base/modules/psb_const_mod.f90 base/modules/psb_error_mod.F90 base/modules/psb_inter_desc_type.f90 base/modules/psb_penv_mod.F90 base/modules/psb_psblas_mod.f90 base/modules/psb_realloc_mod.F90 base/modules/psb_serial_mod.f90 base/modules/psb_sort_mod.f90 base/modules/psb_spmat_type.f90 base/modules/psb_spsb_mod.f90 base/modules/psb_string_mod.f90 base/modules/psb_tools_mod.f90 base/modules/psi_mod.f90 base/modules/psi_serial_mod.f90 base/psblas/Makefile base/psblas/psb_camax.f90 base/psblas/psb_casum.f90 base/psblas/psb_caxpby.f90 base/psblas/psb_cdot.f90 base/psblas/psb_cnrm2.f90 base/psblas/psb_cnrmi.f90 base/psblas/psb_cspmm.f90 base/psblas/psb_cspsm.f90 base/psblas/psb_dnrmi.f90 base/psblas/psb_samax.f90 base/psblas/psb_sasum.f90 base/psblas/psb_saxpby.f90 base/psblas/psb_sdot.f90 base/psblas/psb_snrm2.f90 base/psblas/psb_snrmi.f90 base/psblas/psb_sspmm.f90 base/psblas/psb_sspsm.f90 base/psblas/psb_sxdot.f90 base/psblas/psb_zaxpby.f90 base/psblas/psb_znrmi.f90 base/psblas/pstreecomb.F base/serial/Makefile base/serial/aux/Makefile base/serial/aux/cacmp_mod.f90 base/serial/aux/calcmp_mod.f90 base/serial/aux/calsr.f90 base/serial/aux/calsrx.f90 base/serial/aux/camsort_dw.f90 base/serial/aux/camsort_up.f90 base/serial/aux/camsr.f90 base/serial/aux/camsrx.f90 base/serial/aux/casr.f90 base/serial/aux/casrx.f90 base/serial/aux/clcmp_mod.f90 base/serial/aux/clsr.f90 base/serial/aux/clsrx.f90 base/serial/aux/sasr.f90 base/serial/aux/sasrx.f90 base/serial/aux/smsort_dw.f90 base/serial/aux/smsort_up.f90 base/serial/aux/smsr.f90 base/serial/aux/smsrx.f90 base/serial/aux/ssr.f90 base/serial/aux/ssrx.f90 base/serial/coo/Makefile base/serial/coo/ccoomm.f base/serial/coo/ccoomv.f base/serial/coo/ccoonrmi.f base/serial/coo/ccoorws.f base/serial/coo/ccoosm.f base/serial/coo/ccoosv.f base/serial/coo/dcoosm.f base/serial/coo/scoomm.f base/serial/coo/scoomv.f base/serial/coo/scoonrmi.f base/serial/coo/scoorws.f base/serial/coo/scoosm.f base/serial/coo/scoosv.f base/serial/coo/zcoosm.f base/serial/csr/Makefile base/serial/csr/ccrnrmi.f base/serial/csr/ccsrck.f base/serial/csr/ccsrmm.f base/serial/csr/ccsrrws.f base/serial/csr/ccsrsm.f base/serial/csr/csrmv.f base/serial/csr/csrsv.f base/serial/csr/dcsrck.f base/serial/csr/dcsrmm.f base/serial/csr/dcsrmv.f base/serial/csr/dcsrmv2.f base/serial/csr/dcsrmv3.f base/serial/csr/dcsrmv4.f base/serial/csr/dcsrrws.f base/serial/csr/dcsrsm.f base/serial/csr/dcsrsv.f base/serial/csr/scrnrmi.f base/serial/csr/scsrmm.f base/serial/csr/scsrmv.f base/serial/csr/scsrmv2.f base/serial/csr/scsrmv3.f base/serial/csr/scsrmv4.f base/serial/csr/scsrsm.f base/serial/csr/scsrsv.f base/serial/csr/zcrnrmi.f base/serial/csr/zcsrck.f base/serial/csr/zcsrmm.f base/serial/csr/zcsrrws.f base/serial/csr/zcsrsm.f base/serial/csr/zsrmv.f base/serial/csr/zsrsv.f base/serial/dp/Makefile base/serial/dp/ccoco.f base/serial/dp/ccocr.f base/serial/dp/ccrco.f base/serial/dp/ccrcr.f base/serial/dp/ccrjd.f base/serial/dp/cgind_tri.f base/serial/dp/cgindex.f base/serial/dp/reordvn.f base/serial/dp/scoco.f base/serial/dp/scocr.f base/serial/dp/scrco.f base/serial/dp/scrcr.f base/serial/dp/scrjd.f base/serial/dp/sgind_tri.f base/serial/dp/sgindex.f base/serial/f77/Makefile base/serial/f77/caxpby.f base/serial/f77/ccsmm.f base/serial/f77/ccsnmi.f base/serial/f77/ccsrws.f base/serial/f77/ccssm.f base/serial/f77/cgelp.f base/serial/f77/clpupd.f base/serial/f77/cswmm.f base/serial/f77/cswsm.f base/serial/f77/daxpby.f base/serial/f77/dcsmm.f base/serial/f77/dcsnmi.f base/serial/f77/dcsrp.f base/serial/f77/dcsrws.f base/serial/f77/dcssm.f base/serial/f77/dgelp.f base/serial/f77/dlpupd.f base/serial/f77/dswmm.f base/serial/f77/dswsm.f base/serial/f77/saxpby.f base/serial/f77/scsmm.f base/serial/f77/scsnmi.f base/serial/f77/scsrws.f base/serial/f77/scssm.f base/serial/f77/sgelp.f base/serial/f77/slpupd.f base/serial/f77/smmp.f base/serial/f77/sswmm.f base/serial/f77/sswsm.f base/serial/f77/zcsmm.f base/serial/f77/zcsnmi.f base/serial/f77/zcsrws.f base/serial/f77/zcssm.f base/serial/f77/zgelp.f base/serial/f77/zlpupd.f base/serial/f77/zswmm.f base/serial/f77/zswsm.f base/serial/jad/Makefile base/serial/jad/sjadmm.f base/serial/jad/sjadmv.f base/serial/jad/sjadmv2.f base/serial/jad/sjadmv3.f base/serial/jad/sjadmv4.f base/serial/jad/sjadnr.f base/serial/jad/sjadrws.f base/serial/jad/sjadsm.f base/serial/jad/sjadsv.f base/serial/jad/sjdnrmi.f base/serial/jad/sjdrws.f base/serial/psb_ccoins.f90 base/serial/psb_ccsmm.f90 base/serial/psb_ccsmv.f90 base/serial/psb_ccsnmi.f90 base/serial/psb_ccsprt.f90 base/serial/psb_ccssm.f90 base/serial/psb_ccssv.f90 base/serial/psb_cfixcoo.f90 base/serial/psb_cgelp.f90 base/serial/psb_cipcoo2csc.f90 base/serial/psb_cipcoo2csr.f90 base/serial/psb_cipcsr2coo.f90 base/serial/psb_cneigh.f90 base/serial/psb_cnumbmm.f90 base/serial/psb_crwextd.f90 base/serial/psb_cspclip.f90 base/serial/psb_cspcnv.f90 base/serial/psb_cspgetrow.f90 base/serial/psb_cspgtblk.f90 base/serial/psb_cspgtdiag.f90 base/serial/psb_cspscal.f90 base/serial/psb_csymbmm.f90 base/serial/psb_ctransc.f90 base/serial/psb_ctransp.f90 base/serial/psb_dcoins.f90 base/serial/psb_dspcnv.f90 base/serial/psb_getrow_mod.f90 base/serial/psb_regen_mod.f90 base/serial/psb_scoins.f90 base/serial/psb_scsmm.f90 base/serial/psb_scsmv.f90 base/serial/psb_scsnmi.f90 base/serial/psb_scsprt.f90 base/serial/psb_scssm.f90 base/serial/psb_scssv.f90 base/serial/psb_sfixcoo.f90 base/serial/psb_sgelp.f90 base/serial/psb_sipcoo2csc.f90 base/serial/psb_sipcoo2csr.f90 base/serial/psb_sipcsr2coo.f90 base/serial/psb_sneigh.f90 base/serial/psb_snumbmm.f90 base/serial/psb_srwextd.f90 base/serial/psb_sspclip.f90 base/serial/psb_sspcnv.f90 base/serial/psb_sspgetrow.f90 base/serial/psb_sspgtblk.f90 base/serial/psb_sspgtdiag.f90 base/serial/psb_sspscal.f90 base/serial/psb_ssymbmm.f90 base/serial/psb_stransp.f90 base/serial/psb_update_mod.f90 base/serial/psb_zcoins.f90 base/serial/psb_zcsnmi.f90 base/serial/psb_zspcnv.f90 base/tools/Makefile base/tools/psb_callc.f90 base/tools/psb_casb.f90 base/tools/psb_ccdbldext.F90 base/tools/psb_cfree.f90 base/tools/psb_cins.f90 base/tools/psb_cspalloc.f90 base/tools/psb_cspasb.f90 base/tools/psb_cspfree.f90 base/tools/psb_csphalo.F90 base/tools/psb_cspins.f90 base/tools/psb_csprn.f90 base/tools/psb_dspins.f90 base/tools/psb_sallc.f90 base/tools/psb_sasb.f90 base/tools/psb_scdbldext.F90 base/tools/psb_sfree.f90 base/tools/psb_sins.f90 base/tools/psb_sspalloc.f90 base/tools/psb_sspasb.f90 base/tools/psb_sspfree.f90 base/tools/psb_ssphalo.F90 base/tools/psb_sspins.f90 base/tools/psb_ssprn.f90 base/tools/psb_zspins.f90 config/acx_lapack.m4 configure.ac configure krylov/Makefile krylov/psb_cbicg.f90 krylov/psb_ccg.f90 krylov/psb_ccgs.f90 krylov/psb_ccgstab.f90 krylov/psb_ccgstabl.f90 krylov/psb_crgmres.f90 krylov/psb_dcg.F90 krylov/psb_dcg.f90 krylov/psb_krylov_mod.f90 krylov/psb_sbicg.f90 krylov/psb_scg.F90 krylov/psb_scgs.f90 krylov/psb_scgstab.F90 krylov/psb_scgstabl.f90 krylov/psb_srgmres.f90 krylov/psb_zcg.F90 krylov/psb_zcg.f90 prec/Makefile prec/psb_cbjac_aply.f90 prec/psb_cbjac_bld.f90 prec/psb_cdiagsc_bld.f90 prec/psb_cgprec_aply.f90 prec/psb_cilu_fct.f90 prec/psb_cprc_aply.f90 prec/psb_cprecbld.f90 prec/psb_cprecinit.f90 prec/psb_cprecset.f90 prec/psb_prec_mod.f90 prec/psb_prec_type.f90 prec/psb_sbjac_aply.f90 prec/psb_sbjac_bld.f90 prec/psb_sdiagsc_bld.f90 prec/psb_sgprec_aply.f90 prec/psb_silu_fct.f90 prec/psb_sprc_aply.f90 prec/psb_sprecbld.f90 prec/psb_sprecinit.f90 prec/psb_sprecset.f90 test/fileread/Makefile test/fileread/cf_sample.f90 test/fileread/df_sample.f90 test/fileread/getp.f90 test/fileread/runs/cfs.inp test/fileread/runs/sfs.inp test/fileread/sf_sample.f90 test/fileread/zf_sample.f90 test/pargen/Makefile test/pargen/ppde.f90 test/pargen/runs/ppde.inp test/pargen/spde.f90 util/psb_hbio_mod.f90 util/psb_mat_dist_mod.f90 util/psb_mmio_mod.f90 util/psb_read_mat_mod.f90 Merged the single precision branch.
17 years ago
enddo
rti = h(i,i)
rti1 = h(i+1,i)
call srotg(rti,rti1,c(i),s(i))
call srot(1,h(i,i),1,h(i+1,i),1,c(i),s(i))
h(i+1,i) = szero
call srot(1,rs(i),1,rs(i+1),1,c(i),s(i))
else
do k=2,i
dt = h(k-1,i)
h(k-1,i) = c(k-1)*dt + s(k-1)*h(k,i)
h(k,i) = -s(k-1)*dt + c(k-1)*h(k,i)
enddo
gm = safe_dn2(h(i,i),h(i+1,i))
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),' GM : ',gm
gm = max(gm,s_epstol)
c(i) = h(i,i)/gm
s(i) = h(i+1,i)/gm
rs(i+1) = -s(i)*rs(i)
rs(i) = c(i)*rs(i)
h(i,i) = c(i)*h(i,i)+s(i)*h(i+1,i)
endif
if (istop_ == 1) then
!
! build x and then compute the residual and its infinity norm
!
rst = rs
xt = szero
call strsm('l','u','n','n',i,1,sone,h,size(h,1),rst,size(rst,1))
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Rebuild x-> RS:',rst(1:nl)
do k=1, i
call psb_geaxpby(rst(k),v(:,k),sone,xt,desc_a,info)
end do
call psb_precaply(prec,xt,desc_a,info)
call psb_geaxpby(sone,x,sone,xt,desc_a,info)
call psb_geaxpby(sone,b,szero,w1,desc_a,info)
call psb_spmm(-sone,a,xt,sone,w1,desc_a,info,work=aux)
rni = psb_geamax(w1,desc_a,info)
xni = psb_geamax(xt,desc_a,info)
errnum = rni
errden = (ani*xni+bni)
!
else if (istop_ == 2) then
!
! compute the residual 2-norm as byproduct of the solution
! procedure of the least-squares problem
!
rni = abs(rs(i+1))
errnum = rni
errden = bn2
endif
if (errnum <= eps*errden) then
if (istop_ == 1) then
x = xt
else if (istop_ == 2) then
!
! build x
!
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Rebuild RS:',rs(1:i)
if ((debug_level >= psb_debug_ext_).and.(me==0)) then
write(debug_unit,*) me,' ',trim(name),&
& ' Rebuild RS H:'
do k=1,i
write(debug_unit,*) h(k,1:i)
end do
end if
call strsm('l','u','n','n',i,1,sone,h,size(h,1),rs,size(rs,1))
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Rebuild x-> RS:',rs(1:nl)
w1 = szero
do k=1, i
call psb_geaxpby(rs(k),v(:,k),sone,w1,desc_a,info)
end do
call psb_precaply(prec,w1,w,desc_a,info)
call psb_geaxpby(sone,w,sone,x,desc_a,info)
end if
exit restart
end if
if (itrace_ > 0) &
& call log_conv(methdname,me,itx,itrace_,errnum,errden,deps)
end do inner
if (istop_ == 1) then
x = xt
else if (istop_ == 2) then
!
! build x
!
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Rebuild RS:',rs(1:nl)
call strsm('l','u','n','n',nl,1,sone,h,size(h,1),rs,size(rs,1))
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Rebuild x-> RS:',rs(1:nl)
w1 = szero
do k=1, nl
call psb_geaxpby(rs(k),v(:,k),sone,w1,desc_a,info)
end do
call psb_precaply(prec,w1,w,desc_a,info)
call psb_geaxpby(sone,w,sone,x,desc_a,info)
end if
end do restart
if (itrace_ > 0) &
& call log_conv(methdname,me,itx,1,errnum,errden,deps)
call log_end(methdname,me,itx,errnum,errden,deps,err=derr,iter=iter)
if (present(err)) then
err = derr
end if
deallocate(aux,h,c,s,rs,rst, stat=info)
if (info == 0) call psb_gefree(v,desc_a,info)
if (info == 0) call psb_gefree(w,desc_a,info)
if (info == 0) call psb_gefree(w1,desc_a,info)
if (info == 0) call psb_gefree(xt,desc_a,info)
if (info /= 0) then
info=4011
call psb_errpush(info,name)
goto 9999
end if
! restore external global coherence behaviour
call psb_restore_coher(ictxt,isvch)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error()
return
end if
return
contains
function safe_dn2(a,b)
real(psb_spk_), intent(in) :: a, b
real(psb_spk_) :: safe_dn2
real(psb_spk_) :: t
t = max(abs(a),abs(b))
if (t==0.d0) then
safe_dn2 = 0.d0
else
safe_dn2 = t * sqrt(abs(a/t)**2 + abs(b/t)**2)
endif
return
end function safe_dn2
end subroutine psb_srgmres