Rework cuda example
sfilippone
1 year ago
parent
4ee170f0ec
commit
3972f27eb5
@ -1,40 +0,0 @@
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AMGDIR=../..
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AMGINCDIR=$(AMGDIR)/include
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include $(AMGINCDIR)/Make.inc.amg4psblas
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AMGMODDIR=$(AMGDIR)/modules
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AMGLIBDIR=$(AMGDIR)/lib
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AMG_LIBS=-L$(AMGLIBDIR) -lpsb_krylov -lamg_prec -lpsb_prec
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# To compile these example you need to have also installed PSBLAS-EXT, SPGPU and
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# CUDA. Please refer to the documentation of AMG4PSBLAS and PSBLAX-EXT for the
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# full details.
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# This define the variables : PSBGPULDLIBS, LIBRSB_INCLUDES, and CUDA_INCLUDES
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PSBEXT_DIR= #< FILL-ME >
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include $(PSBEXT_DIR)/include/Make.inc.ext
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FINCLUDES=$(FMFLAG). $(FMFLAG)$(AMGMODDIR) $(FMFLAG)$(AMGINCDIR) \
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$(PSBLAS_INCLUDES) $(FIFLAG). $(FMFLAG)$(SPGPU_INCDIR) \
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$(FMFLAG)$(LIBRSB_INCLUDES) $(FMFLAG)$(CUDA_INCLUDES) \
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LINKOPT=$(CINCLUDES) $(CDEFINES) $(CUDEFINES)
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DGOBJS=amg_dexample_gpu.o data_input.o amg_dpde_mod.o
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EXEDIR=./runs
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all: amg_dexample_gpu
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amg_dexample_gpu: $(DGOBJS)
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$(FLINK) $(LINKOPT) $(DGOBJS) -o amg_dexample_gpu \
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$(AMG_LIBS) $(PSBLAS_LIBS) $(PSBGPULDLIBS) $(LDLIBS)
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/bin/mv amg_dexample_gpu $(EXEDIR)
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amg_dexample_gpu.o: data_input.o amg_dpde_mod.o
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clean:
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/bin/rm -f $(DGOBJS) *$(.mod) $(EXEDIR)/amg_dexample_gpu
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lib:
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(cd ../../; make library)
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verycleanlib:
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(cd ../../; make veryclean)
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@ -1,352 +0,0 @@
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!
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!
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! AMG4PSBLAS version 1.0
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! Algebraic Multigrid Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.7)
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!
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! (C) Copyright 2021
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!
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Fabio Durastante
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the AMG4PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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! File: amg_dexample_gpu.f90
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!
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! This sample program solves a linear system obtained by discretizing a
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! PDE with Dirichlet BCs. The solver is CG, coupled with one of the
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! following multi-level preconditioner, as explained in Section 4.2 of
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! the AMG4PSBLAS User's and Reference Guide:
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!
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! - choice = 1, a V-cycle with decoupled smoothed aggregation, 4 Jacobi
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! sweeps as pre/post-smoother and 8 Jacobi sweeps as coarsest-level
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! solver with replicated coarsest matrix
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!
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! - choice = 2, a W-cycle based on the coupled aggregation relying on matching,
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! with maximum size of aggregates equal to 8 and smoothed prolongators,
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! 2 sweeps of Block-Jacobi ipre/post-smoother using approximate inverse INVK and
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! 4 sweeps of Block-Jacobi with INVK as coarsest-level solver on distributed
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! coarsest matrix
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!
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! The matrix and the rhs are read from files (if an rhs is not available, the
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! unit rhs is set).
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!
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!
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! The PDE is a general second order equation in 3d
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!
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! a1 dd(u) a2 dd(u) a3 dd(u) b1 d(u) b2 d(u) b3 d(u)
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! - ------ - ------ - ------ + ----- + ------ + ------ + c u = f
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! dxdx dydy dzdz dx dy dz
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!
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! with Dirichlet boundary conditions
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! u = g
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!
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! on the unit cube 0<=x,y,z<=1.
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!
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!
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! Note that if b1=b2=b3=c=0., the PDE is the Laplace equation.
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!
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! In this sample program the index space of the discretized
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! computational domain is first numbered sequentially in a standard way,
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! then the corresponding vector is distributed according to a BLOCK
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! data distribution.
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!
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program amg_dexample_gpu
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use psb_base_mod
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use amg_prec_mod
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use psb_krylov_mod
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use psb_util_mod
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use psb_gpu_mod
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use data_input
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use amg_d_pde_mod
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implicit none
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! input parameters
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! sparse matrices
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type(psb_dspmat_type) :: A
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! sparse matrices descriptor
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type(psb_desc_type):: desc_A
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! preconditioner
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type(amg_dprec_type) :: P
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! right-hand side, solution and residual vectors
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type(psb_d_vect_type) :: x, b, r
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! GPU variables
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type(psb_d_hlg_sparse_mat) :: agmold
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type(psb_d_vect_gpu) :: vgmold
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type(psb_i_vect_gpu) :: igmold
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! solver and preconditioner parameters
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real(psb_dpk_) :: tol, err
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integer :: itmax, iter, istop
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integer :: nlev
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! parallel environment parameters
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type(psb_ctxt_type) :: ctxt
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integer :: iam, np
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! other variables
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integer :: choice
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integer :: i,info,j
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integer(psb_epk_) :: amatsize, precsize, descsize
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integer(psb_epk_) :: system_size
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integer :: idim, ierr, ircode
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real(psb_dpk_) :: resmx, resmxp
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real(psb_dpk_) :: t1, t2, tprec
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character(len=5) :: afmt='CSR'
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character(len=20) :: name, kmethod
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! initialize the parallel environment
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call psb_init(ctxt)
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call psb_info(ctxt,iam,np)
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!
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! BEWARE: if you have NGPUS per node, the default is to
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! attach to mod(IAM,NGPUS)
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!
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call psb_gpu_init(ictxt)
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if (iam < 0) then
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! This should not happen, but just in case
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call psb_exit(ctxt)
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stop
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endif
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name='amg_dexample_gpu'
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if(psb_get_errstatus() /= 0) goto 9999
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info=psb_success_
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call psb_set_errverbosity(2)
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!
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! Hello world
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!
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if (iam == psb_root_) then
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write(*,*) 'Welcome to AMG4PSBLAS version: ',amg_version_string_
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write(*,*) 'This is the ',trim(name),' sample program'
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end if
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write(*,*) 'Process ',iam,' running on device: ', psb_cuda_getDevice(),' out of', psb_cuda_getDeviceCount()
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write(*,*) 'Process ',iam,' device ', psb_cuda_getDevice(),' is a: ', trim(psb_gpu_DeviceName())
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! get parameters
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call get_parms(ctxt,choice,idim,itmax,tol)
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! allocate and fill in the coefficient matrix, rhs and initial guess
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call psb_barrier(ctxt)
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t1 = psb_wtime()
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call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
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& a1,a2,a3,b1,b2,b3,c,g,info)
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call psb_barrier(ctxt)
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t2 = psb_wtime() - t1
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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call psb_errpush(info,name)
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goto 9999
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end if
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if (iam == psb_root_) write(*,'("Overall matrix creation time : ",es12.5)')t2
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if (iam == psb_root_) write(*,'(" ")')
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select case(choice)
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case(1)
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! initialize a V-cycle preconditioner, relying on decoupled smoothed aggregation
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! with 4 Jacobi sweeps as pre/post-smoother
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! and 8 Jacobi sweeps as coarsest-level solver on replicated coarsest matrix
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call P%init(ctxt,'ML',info)
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call P%set('SMOOTHER_TYPE','JACOBI',info)
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call P%set('SMOOTHER_SWEEPS',4,info)
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call P%set('COARSE_SOLVE','JACOBI',info)
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call P%set('COARSE_SWEEPS',8,info)
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kmethod = 'CG'
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case(2)
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! initialize a W-cycle preconditioner based on the coupled aggregation relying on matching,
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! with maximum size of aggregates equal to 8 and smoothed prolongators,
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! 2 sweeps of Block-Jacobi pre/post-smoother using approximate inverse INVK and
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! 4 sweeps of Block-Jacobi with INVK on the coarsest level distributed matrix
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call P%init(ctxt,'ML',info)
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call P%set('PAR_AGGR_ALG','COUPLED',info)
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call P%set('AGGR_TYPE','MATCHBOXP',info)
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call P%set('AGGR_SIZE',8,info)
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call P%set('ML_CYCLE','WCYCLE',info)
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call P%set('SMOOTHER_TYPE','BJAC',info)
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call P%set('SMOOTHER_SWEEPS',2,info)
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call P%set('SUB_SOLVE','INVK',info)
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call P%set('COARSE_SOLVE','BJAC',info)
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call P%set('COARSE_SUBSOLVE','INVK',info)
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call P%set('COARSE_SWEEPS',4,info)
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call P%set('COARSE_MAT','DIST',info)
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kmethod = 'CG'
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end select
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call psb_barrier(ctxt)
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t1 = psb_wtime()
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! build the preconditioner
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call P%hierarchy_build(A,desc_A,info)
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call P%smoothers_build(A,desc_A,info, amold=agmold, vmold=vgmold, imold=igmold)
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tprec = psb_wtime()-t1
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call psb_amx(ctxt, tprec)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='amg_precbld')
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goto 9999
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end if
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! set the solver parameters and the initial guess
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call psb_geall(x,desc_A,info)
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call x%zero()
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call psb_geasb(x,desc_A,info)
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! Convert A, DESC_A,X,B to a GPU-enabled format
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call desc_a%cnv(mold=igmold)
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call a%cscnv(info,mold=agmold)
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call psb_geasb(x,desc_a,info,mold=vgmold)
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call psb_geasb(b,desc_a,info,mold=vgmold)
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! solve Ax=b with preconditioned Krylov method
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call psb_barrier(ctxt)
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call prec%allocate_wrk(info)
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t1 = psb_wtime()
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call psb_krylov(kmethod,A,P,b,x,tol,desc_A,info,itmax,iter,err,itrace=1,istop=2)
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t2 = psb_wtime() - t1
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call psb_amx(ctxt,t2)
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call prec%deallocate_wrk(info)
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call psb_geall(r,desc_A,info)
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call r%zero()
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call psb_geasb(r,desc_A,info)
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call psb_geaxpby(done,b,dzero,r,desc_A,info)
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call psb_spmm(-done,A,x,done,r,desc_A,info)
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resmx = psb_genrm2(r,desc_A,info)
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resmxp = psb_geamax(r,desc_A,info)
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amatsize = a%sizeof()
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descsize = desc_a%sizeof()
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precsize = p%sizeof()
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system_size = desc_a%get_global_rows()
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call psb_sum(ctxt,amatsize)
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call psb_sum(ctxt,descsize)
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call psb_sum(ctxt,precsize)
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call P%descr(info)
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if (iam == psb_root_) then
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write(*,'(" ")')
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write(*,'("Matrix from PDE example")')
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write(*,'("Computed solution on ",i8," processors")')np
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write(*,'("Linear system size : ",i12)') system_size
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write(*,'("Krylov method : ",a)') kmethod
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write(*,'("Iterations to convergence : ",i6)')iter
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write(*,'("Error estimate on exit : ",es12.5)')err
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write(*,'("Time to build prec. : ",es12.5)')tprec
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write(*,'("Time to solve system : ",es12.5)')t2
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write(*,'("Time per iteration : ",es12.5)')t2/(iter)
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write(*,'("Total time : ",es12.5)')t2+tprec
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write(*,'("Residual 2-norm : ",es12.5)')resmx
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write(*,'("Residual inf-norm : ",es12.5)')resmxp
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write(*,'("Total memory occupation for A : ",i12)')amatsize
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write(*,'("Total memory occupation for DESC_A : ",i12)')descsize
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write(*,'("Total memory occupation for PREC : ",i12)')precsize
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end if
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call psb_gefree(b, desc_A,info)
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call psb_gefree(x, desc_A,info)
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call psb_spfree(A, desc_A,info)
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call P%free(info)
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call psb_cdfree(desc_A,info)
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call psb_gpu_exit()
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call psb_exit(ctxt)
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stop
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9999 continue
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call psb_error(ctxt)
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contains
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!
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! get parameters from standard input
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!
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subroutine get_parms(ctxt,choice,idim,itmax,tol)
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implicit none
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type(psb_ctxt_type) :: ctxt
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integer :: choice, idim, itmax
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real(psb_dpk_) :: tol
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||||||
integer :: iam, np, inp_unit
|
|
||||||
character(len=1024) :: filename
|
|
||||||
|
|
||||||
call psb_info(ctxt,iam,np)
|
|
||||||
|
|
||||||
if (iam == psb_root_) then
|
|
||||||
if (command_argument_count()>0) then
|
|
||||||
call get_command_argument(1,filename)
|
|
||||||
inp_unit = 30
|
|
||||||
open(inp_unit,file=filename,action='read',iostat=info)
|
|
||||||
if (info /= 0) then
|
|
||||||
write(psb_err_unit,*) 'Could not open file ',filename,' for input'
|
|
||||||
call psb_abort(ctxt)
|
|
||||||
stop
|
|
||||||
else
|
|
||||||
write(psb_err_unit,*) 'Opened file ',trim(filename),' for input'
|
|
||||||
end if
|
|
||||||
else
|
|
||||||
inp_unit=psb_inp_unit
|
|
||||||
end if
|
|
||||||
! read input parameters
|
|
||||||
call read_data(choice,inp_unit)
|
|
||||||
call read_data(idim,inp_unit)
|
|
||||||
call read_data(itmax,inp_unit)
|
|
||||||
call read_data(tol,inp_unit)
|
|
||||||
if (inp_unit /= psb_inp_unit) then
|
|
||||||
close(inp_unit)
|
|
||||||
end if
|
|
||||||
end if
|
|
||||||
|
|
||||||
call psb_bcast(ctxt,choice)
|
|
||||||
call psb_bcast(ctxt,idim)
|
|
||||||
call psb_bcast(ctxt,itmax)
|
|
||||||
call psb_bcast(ctxt,tol)
|
|
||||||
|
|
||||||
end subroutine get_parms
|
|
||||||
|
|
||||||
end program amg_dexample_gpu
|
|
||||||
@ -0,0 +1,43 @@
|
|||||||
|
AMGDIR=../..
|
||||||
|
AMGINCDIR=$(AMGDIR)/include
|
||||||
|
include $(AMGINCDIR)/Make.inc.amg4psblas
|
||||||
|
AMGMODDIR=$(AMGDIR)/modules
|
||||||
|
AMGLIBDIR=$(AMGDIR)/lib
|
||||||
|
AMG_LIBS=-L$(AMGLIBDIR) -lpsb_krylov -lamg_prec -lpsb_prec
|
||||||
|
# To compile these example you need to have also installed PSBLAS-EXT, SPGPU and
|
||||||
|
# CUDA. Please refer to the documentation of AMG4PSBLAS and PSBLAX-EXT for the
|
||||||
|
# full details.
|
||||||
|
# This define the variables : PSBGPULDLIBS, LIBRSB_INCLUDES, and CUDA_INCLUDES
|
||||||
|
#PSBEXT_DIR= #< FILL-ME >
|
||||||
|
#include $(PSBEXT_DIR)/include/Make.inc.ext
|
||||||
|
include $(PSBLASDIR)/include/Make.inc.psblas
|
||||||
|
PSBLIBDIR=$(PSBLASDIR)/lib/
|
||||||
|
FINCLUDES=$(FMFLAG). $(FMFLAG)$(AMGMODDIR) $(FMFLAG)$(AMGINCDIR) \
|
||||||
|
$(PSBLAS_INCLUDES) $(FIFLAG).
|
||||||
|
AMG_LIB=-L$(AMGLIBDIR) -lamg_prec
|
||||||
|
PSBLAS_LIB= -L$(PSBLIBDIR) -lpsb_linsolve -lpsb_prec -lpsb_util -lpsb_ext \
|
||||||
|
-lpsb_base
|
||||||
|
|
||||||
|
LINKOPT=-lstdc++
|
||||||
|
|
||||||
|
DGOBJS=amg_dexample_cuda.o data_input.o
|
||||||
|
|
||||||
|
EXEDIR=./runs
|
||||||
|
|
||||||
|
all: amg_dexample_cuda
|
||||||
|
|
||||||
|
|
||||||
|
amg_dexample_cuda: $(DGOBJS)
|
||||||
|
$(FLINK) $(LINKOPT) $(DGOBJS) -o amg_dexample_cuda \
|
||||||
|
$(AMG_LIB) $(PSBGPULDLIBS) $(PSBLAS_LIB) $(LDLIBS)
|
||||||
|
/bin/mv amg_dexample_cuda $(EXEDIR)
|
||||||
|
|
||||||
|
amg_dexample_cuda.o: data_input.o
|
||||||
|
|
||||||
|
clean:
|
||||||
|
/bin/rm -f $(DGOBJS) *$(.mod) $(EXEDIR)/amg_dexample_cuda
|
||||||
|
|
||||||
|
lib:
|
||||||
|
(cd ../../; make library)
|
||||||
|
verycleanlib:
|
||||||
|
(cd ../../; make veryclean)
|
||||||
File diff suppressed because it is too large
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Reference in New Issue