[petsc-users] Problem with matrix and vector using GPU

[Barry Smith]

   Since you are creating some vectors from the DM you need also the options database option -dm_vec_type cuda

Barry


> On Sep 20, 2023, at 11:21 AM, Ramoni Z. Sedano Azevedo <ramoni.zsedano at gmail.com> wrote:
> 
> 
> Hey!
> 
> I am using PETSc in a Fortran code and we use MPI parallelization. We would like to use GPU parallelization, but we are encountering an error.
> 
> PETSc is configured as follows:
> #!/bin/bash
> ./configure \
>  --prefix=${PWD}/installdir \
>  --with-fortran \
>  --with-fortran-kernels=true \
>  --with-cuda \
>  --download-fblaslapack \
>  --with-scalar-type=complex \
>  --with-precision=double \
>  --with-debugging=yes \
>  --with-x=0 \
>  --with-gnu-compilers=1 \
>  --with-cc=mpicc \
>  --with-cxx=mpicxx \
>  --with-fc=mpif90 \
>  --with-make-exec=make
> 
> Within my code, matrices and vectors are allocated with the following commands:
> PetscCallA( DMDACreate3d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, DMDA_STENCIL_BOX, l+1, m+1, nzn, PETSC_DECIDE, PETSC_DECIDE, PETSC_DECIDE, i3, i1, PETSC_NULL_INTEGER, PETSC_NULL_INTEGER, PETSC_NULL_INTEGER, da, ierr) )
> 
> PetscCallA( DMSetUp(da,ierr) )
> 
> PetscCallA( DMCreateGlobalVector(da,b,ierr) )
> PetscCallA( VecDuplicate(b,xsol,ierr) )
> PetscCallA( VecDuplicate(b,src,ierr) )
> PetscCallA( VecDuplicate(b,rhoxyz,ierr) )
> 
> PetscCallA( DMCreateLocalVector(da,localx,ierr) )
> PetscCallA( VecDuplicate(localx,localb,ierr) )
> PetscCallA( VecDuplicate(localx,localsrc,ierr) )
> PetscCallA( VecDuplicate(localx,lrhoxyz,ierr) )
> 
> PetscCallA( VecGetLocalSize(xsol,mloc,ierr) )
> 
> ngrow=3*(l+1)*(m+1)*nzn
>       
> PetscCallA( MatCreate(PETSC_COMM_WORLD,A,ierr) )
> PetscCallA( MatSetOptionsPrefix(A,'A_',ierr) )
> PetscCallA( MatSetSizes(A,mloc,mloc,ngrow,ngrow,ierr) )
> PetscCallA( MatSetFromOptions(A,ierr) )
> PetscCallA( MatSeqAIJSetPreallocation(A,i15,PETSC_NULL_INTEGER,ierr) )
> PetscCallA( MatSeqBAIJSetPreallocation(A, i3, i15, PETSC_NULL_INTEGER, ierr) )
> 
> PetscCallA( MatMPIAIJSetPreallocation(A, i15, PETSC_NULL_INTEGER, i15, PETSC_NULL_INTEGER, ierr) )
> 
> PetscCallA( MatMPIBAIJSetPreallocation(A, i3, i15, PETSC_NULL_INTEGER, i15, PETSC_NULL_INTEGER, ierr) )
> 
> PetscCallA( MatCreate(PETSC_COMM_WORLD, P, ierr) )
> PetscCallA( MatSetOptionsPrefix(P, 'P_', ierr) )
> PetscCallA( MatSetSizes(P, mloc, mloc, ngrow, ngrow, ierr) )
> PetscCallA( MatSetFromOptions(P, ierr) )
> PetscCallA( MatSeqAIJSetPreallocation(P, i15, PETSC_NULL_INTEGER, ierr) )
> PetscCallA( MatSeqBAIJSetPreallocation(P, i3, i15, PETSC_NULL_INTEGER, ierr) )
> 
> PetscCallA( MatMPIAIJSetPreallocation(P, i15, PETSC_NULL_INTEGER, i15, PETSC_NULL_INTEGER, ierr) )
> PetscCallA( MatMPIBAIJSetPreallocation(P, i3, i15, PETSC_NULL_INTEGER, i15, PETSC_NULL_INTEGER, ierr) )
> 
> PetscCallA( DMDAGetInfo(da, PETSC_NULL_INTEGER, mx, my, mz, PETSC_NULL_INTEGER, PETSC_NULL_INTEGER, PETSC_NULL_INTEGER, PETSC_NULL_INTEGER, PETSC_NULL_INTEGER, PETSC_NULL_INTEGER,PETSC_NULL_INTEGER,PETSC_NULL_INTEGER,PETSC_NULL_INTEGER,ierr) )
> PetscCallA( DMDAGetCorners(da,xs,ys,zs,xm,ym,zm,ierr) )
> PetscCallA( DMDAGetGhostCorners(da,gxs,gys,gzs,gxm,gym,gzm,ierr) )
> 
> PetscCallA( DMLocalToGlobal(da,localsrc,INSERT_VALUES,src,ierr) )
> PetscCallA( DMGlobalToLocalBegin(da, src, INSERT_VALUES, localsrc, ierr) )
> PetscCallA( DMGlobalToLocalEnd(da,src,INSERT_VALUES,localsrc,ierr) )
> PetscCallA( DMLocalToGlobal(da,localb,INSERT_VALUES,b,ierr) )
> 
> When calling the solver function
> PetscCallA( KSPSolve(ksp,b,xsol,ierr) )
> the following error occurs:
> [0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
> [0]PETSC ERROR: Invalid argument
> [0]PETSC ERROR: Object (seq) is not seqcuda or mpicuda
> [0]PETSC ERROR: WARNING! There are option(s) set that were not used! Could be the program crashed before they were used or a spelling mistake, etc!
> [0]PETSC ERROR: Option left: name:-vec_type value: cuda
> [0]PETSC ERROR: See https://petsc.org/release/faq/ for trouble shooting.
> [0]PETSC ERROR: Petsc Release Version 3.18.4, unknown 
> The code is executed with the following flags:
> ./${executable} \
>  -A_mat_type aijcusparse \
>  -P_mat_type aijcusparse \
>  -vec_type cuda \
>  -use_gpu_aware_mpi 0 \
>  -em_ksp_monitor_true_residual \
>  -em_ksp_type bcgs \
>  -em_pc_type bjacobi \
>  -em_sub_pc_type ilu \
>  -em_sub_pc_factor_levels 3 \
>  -em_sub_pc_factor_fill 6 \
>  < ./Parameters.inp \
> 
> I've already tested using mpiaijcusparse for matrix and mpicuda for vector and the error continues.
> 
> Would anyone have an idea what I might be doing wrong?
> 
> Sincerely,
> Ramoni Z. S. Azevedo
> 

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