[petsc-dev] hypre + OMP and MKL-AIJ

Kalinkin, Alexander A alexander.a.kalinkin at intel.com
Thu Sep 14 14:25:05 CDT 2017

Hi All,
Of course we can if you need it but I see the problem with testing – we need to implement functionality and test it simultaneously with MatMatMult() wrappers in petsc branch. Any thoughts how it can be realized?

From: Richard Tran Mills [mailto:rtmills at anl.gov]
Sent: Thursday, September 14, 2017 11:45 AM
To: Mark Adams <mfadams at lbl.gov>
Cc: For users of the development version of PETSc <petsc-dev at mcs.anl.gov>; Kalinkin, Alexander A <alexander.a.kalinkin at intel.com>; Sokolova, Irina <irina.sokolova at intel.com>
Subject: Re: [petsc-dev] hypre + OMP and MKL-AIJ

Hi Mark,
Regarding MatMatMult() support, I think it should be fairly trivial for me to add that to AIJMKL. However, MKL doesn't currently have a matrix triple product routine (though the possibility of adding this has come up before in discussions with Alex Kalinkin from the MKL sparse team), so for now we'd need to implement that using MatMatMult().
Perhaps Alex or Irina (cc'd) can say something about possible support for sparse matrix triple products in MKL?

On Thu, Sep 14, 2017 at 11:32 AM, Mark Adams <mfadams at lbl.gov<mailto:mfadams at lbl.gov>> wrote:
I recall Barry saying that he updated the hypre interface after the last hypre release, which includes OpenMP. But, I am not finding the email. Can someone tell me the status of this?

Note, I have two users that are interested in using threads with AMG. I think we would be interested in testing the new MKL-AIJ matrix but as I understand it we are waiting on the Mat-Mat Mult method(s) to get migrated. I should have at least one user that would be interested in testing this when it is ready.


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