[mpich-discuss] mpich3 error with ch3

[Alim Akhtar]

Hi mpich dev team,

I am facing one issue similar to discussed in below discussion

https://lists.mpich.org/pipermail/devel/2021-January/000826.html

Someone in the mailing list suggested recompiling the mpi bench using
CH4. as below:

https://lists.mpich.org/pipermail/devel/2021-January/000828.html

"MPICH with ch4, with `--with-device=ch4:ofi`"

Actually this fixes the failure on this CPU architecture.

Questions:
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
broken?
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.


-- 
Regards,
Alim