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

[Junchao Zhang]

Richard, do you want to trick Intel?

--Junchao Zhang


On Thu, Jun 4, 2026 at 2:29 AM Klaij, Christiaan via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> I came across this issue:
>
> https://urldefense.us/v3/__https://danieldk.eu/software/misc/intel-mkl-on-amd-zen__;!!G_uCfscf7eWS!dajR2MuTfP2rxfSl3EfNQWNARhE0YDaEkG1Oa1g3PU3nT34viNVZXfsr3ssEuPluCFsljOlWzidoiyoX9ra19wA3XYtS$ 
> <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 <+31%20317%2049%2033%2044>  |  https://urldefense.us/v3/__http://www.marin.nl__;!!G_uCfscf7eWS!dajR2MuTfP2rxfSl3EfNQWNARhE0YDaEkG1Oa1g3PU3nT34viNVZXfsr3ssEuPluCFsljOlWzidoiyoX9ra19770ELRq$ 
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