[mpich-discuss] mpich3 error with ch3
zhouh at anl.gov
Thu May 27 08:58:05 CDT 2021
Similar issues can be very different in causes. Checking the referenced discussion, I wasn’t sure what was the original issues. We suggested to try ch4 as to get more data points rather than as a solution. Nevertheless, ch4 is the current recommended device as it is more actively developed.
Ch3 is not broken as far as we know. Could you describe your issue in more details?
From: Alim Akhtar via discuss <discuss at mpich.org>
Date: Wednesday, May 26, 2021 at 10:51 PM
To: discuss at mpich.org <discuss at mpich.org>
Cc: Alim Akhtar <alim.akhtar at gmail.com>
Subject: [mpich-discuss] mpich3 error with ch3
Hi mpich dev team,
I am facing one issue similar to discussed in below discussion
Someone in the mailing list suggested recompiling the mpi bench using
CH4. as below:
"MPICH with ch4, with `--with-device=ch4:ofi`"
Actually this fixes the failure on this CPU architecture.
1. Is this a known issue with MPI bench on the recent CPU
architecture? (I am running on ARM's Cortex -A 75), like ch3 is
2. With no error after using CH4, does this mean the CPU is all good?
Note: using ch3 was working fine on our previous CPU (A-72)
Any input will be really appreciated.
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