[mpich-discuss] libfabric+psm2 performance

[Zhou, Hui]

Yeah, as Wesley suggested, it will shed more light if you try set the environment variable MPIR_CVAR_CH4_OFI_CAPABILITY_SETS_DEBUG and get some diagnostics. We haven’t tested against such old libfabric for a while so some discrepancy in the capability set may have crept in.

--
Hui Zhou


From: Bland, Wesley via discuss <discuss at mpich.org>
Date: Wednesday, June 16, 2021 at 8:47 AM
To: Antonio J. Peña <antonio.pena at bsc.es>
Cc: Bland, Wesley <wesley.bland at intel.com>, MPICH Discuss <discuss at mpich.org>
Subject: Re: [mpich-discuss] libfabric+psm2 performance
If you set the environment variable MPIR_CVAR_CH4_OFI_CAPABILITY_SETS_DEBUG, it will print out the capability set (and provider) that MPICH is using so you can confirm.
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