[petsc-users] componentwise matrix multiplication

[Zhang, Hong]

Marius,
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Ok I see, it is not so important I was just wondering. Presently I only need it for dense matrices, fow now I am just using MatDenseGetArray<https://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatDenseGetArray.html> on both matrices and multiply both arrays pointwise, which is ok I guess. For non-dense matrices it may be more complicated.

This is a good approach for sequential and parallel MatDense matrices.
Hong



Von: "Zhang, Hong" <hzhang at mcs.anl.gov>
An: "Marius Buerkle" <mbuerkle at web.de>, "PETSc users list" <petsc-users at mcs.anl.gov>
Betreff: Re: [petsc-users] componentwise matrix multiplication
Marius,
No. You may write one yourself. Let us know what matrix format do you have. We'll make suggestion to you.
Hong
________________________________
From: petsc-users <petsc-users-bounces at mcs.anl.gov> on behalf of Marius Buerkle <mbuerkle at web.de>
Sent: Monday, August 10, 2020 7:50 PM
To: PETSc users list <petsc-users at mcs.anl.gov>
Subject: [petsc-users] componentwise matrix multiplication

Hi,

Is there a componentwise matrix multiplication, similar to VecPointwiseMult ?

Best,
Marius
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