[petsc-users] using intel mkl for optimized blas/lapack on amd nodes

[Klaij, Christiaan]

I came across this issue:

https://urldefense.us/v3/__https://danieldk.eu/software/misc/intel-mkl-on-amd-zen__;!!G_uCfscf7eWS!fsSSG7b4cHz_fsk3H-3DI4kIopw4fIp1MW93aPTq10vZnZKOx1t7cEg2g4MbGyxZXr15OMM0jg0UU0q2p5ktYkQ$ 

We do configure petsc with the intel mkl for optimized
blas/lapack using --with-blas-lapack-dir=${MKL_DIR}.

How much would this issue affect the performance of petsc on amd
nodes? Do you have the proposed workaround in place?

Chris
dr. ir. Christiaan Klaij | senior researcher
Research & Development | CFD Development
T +31 317 49 33 44 | https://urldefense.us/v3/__http://www.marin.nl__;!!G_uCfscf7eWS!fsSSG7b4cHz_fsk3H-3DI4kIopw4fIp1MW93aPTq10vZnZKOx1t7cEg2g4MbGyxZXr15OMM0jg0UU0q2h3yojEE$ 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20260604/2e955ff4/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image455803.png
Type: image/png
Size: 5004 bytes
Desc: image455803.png
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20260604/2e955ff4/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image705130.png
Type: image/png
Size: 487 bytes
Desc: image705130.png
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20260604/2e955ff4/attachment-0001.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image115249.png
Type: image/png
Size: 504 bytes
Desc: image115249.png
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20260604/2e955ff4/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image770232.png
Type: image/png
Size: 482 bytes
Desc: image770232.png
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20260604/2e955ff4/attachment-0003.png>