> On 5 May 2023, at 2:00 PM, 권승리 / 학생 / 항공우주공학과 wrote:
>
> Dear Pierre Jolivet
>
> Thank you for your explanation.
>
> I will try to use a converting matrix.
>
> I know it's really inefficient, but I need an inverse matrix (inv(A)) itself
> for my research.
>
> If parallel computing is di
Dear Pierre Jolivet
Thank you for your explanation.
I will try to use a converting matrix.
I know it's really inefficient, but I need an inverse matrix (inv(A))
itself for my research.
If parallel computing is difficult to get inv(A), can I run the part
related to MatMatSolve with a single cor
> On 5 May 2023, at 1:25 PM, 권승리 / 학생 / 항공우주공학과 wrote:
>
> Dear Matthew Knepley
>
> However, I've already installed ScaLAPACK.
> cd $PETSC_DIR
> ./configure --download-mpich --with-debugging=0 COPTFLAGS='-O3 -march=native
> -mtune=native' CXXOPTFLAGS='-O3 -march=native -mtune=native' FOPTFLA
Dear Matthew Knepley
However, I've already installed ScaLAPACK.
cd $PETSC_DIR
./configure --download-mpich --with-debugging=0 COPTFLAGS='-O3
-march=native -mtune=native' CXXOPTFLAGS='-O3 -march=native -mtune=native'
FOPTFLAGS='-O3 -march=native -mtune=native' --download-mumps --
*download-scalapac
On Fri, May 5, 2023 at 3:49 AM 권승리 / 학생 / 항공우주공학과
wrote:
> Dear Barry Smith
>
> Thanks to you, I knew the difference between MATAIJ and MATDENSE.
>
> However, I still have some problems.
>
> There is no problem when I run with a single core. But, MatGetFactor error
> occurs when using multi-core
Dear Barry Smith
Thanks to you, I knew the difference between MATAIJ and MATDENSE.
However, I still have some problems.
There is no problem when I run with a single core. But, MatGetFactor error
occurs when using multi-core.
Could you give me some advice?
The error message is
[0]PETSC ERROR:
The code in ex125.c contains
PetscCall(MatCreate(PETSC_COMM_WORLD, &C));
PetscCall(MatSetOptionsPrefix(C, "rhs_"));
PetscCall(MatSetSizes(C, m, PETSC_DECIDE, PETSC_DECIDE, nrhs));
PetscCall(MatSetType(C, MATDENSE));
PetscCall(MatSetFromOptions(C));
PetscCall(MatSetUp(C));
This dense
Dear Barry Smith
Thank you for your reply.
I've already installed MUMPS.
And I checked the example you said (ex125.c), I don't understand why the
RHS matrix becomes the SeqDense matrix.
Could you explain in more detail?
Best regards
Seung Lee Kwon
2023년 5월 4일 (목) 오후 12:08, Barry Smith 님이 작성:
You can configure with MUMPS ./configure --download-mumps
--download-scalapack --download-ptscotch --download-metis --download-parmetis
And then use MatMatSolve() as in src/mat/tests/ex125.c with parallel
MatMatSolve() using MUMPS as the solver.
Barry
> On May 3, 2023, at 10:29 PM, 권
Dear developers
Thank you for your explanation.
But I should use the MatCreateSeqDense because I want to use the
MatMatSolve that B matrix must be a SeqDense matrix.
Using MatMatSolve is an inevitable part of my code.
Could you give me a comment to avoid this error?
Best,
Seung Lee Kwon
2023
On Wed, May 3, 2023 at 6:05 AM 권승리 / 학생 / 항공우주공학과
wrote:
> Dear developers
>
> I'm trying to use parallel computing and I ran the command 'mpirun -np 4
> ./app'
>
> In this case, there are two problems.
>
> *First,* I encountered error message
> ///
> [0]PETSC ERROR: [1]PETSC ERROR:
Dear developers
I'm trying to use parallel computing and I ran the command 'mpirun -np 4
./app'
In this case, there are two problems.
*First,* I encountered error message
///
[0]PETSC ERROR: [1]PETSC ERROR: - Error Message
-
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