March 30, 2023 at 1:23 amHyun shinSubscriber
I am using ANSYS 2023 CFX in Windows server.
When I summit job, CFX does not work sometimes.
So I changed the machine From AMD 7742 to Intel CPU Server!
then The problem is solved!
I think CFX has some problem with AMD EPYC 7742.
More detaily, Intel MPI 2018 version has some problems with AMD 7742 CPU!
I want to know how to sovle the problem!
Can I change CFX's Intel MPI version in Workbench environment?
April 7, 2023 at 9:46 pmrfblumenAnsys Employee
There have been a couple of reported cases related to this processor with Intel MPI. It's under investigation. In the mean time, please try using the "Microsoft MPI local parallel" option for running parallel.
April 7, 2023 at 10:37 pmHyun shinSubscriber
Thanks your reply!
I think you know the performance of MSMPI is very very poor!
So I can’t use MS-MPI!
Linux OS version use more later version of Intel MPI than Windows!
So I think ANSYS already knew the bug about Intel MPI with 7742 CPU.
But You did not make any modifications!
I hope ANSYS makes new version of CFX using new INTEL MPI!
Can you give me the schedule for solving this bug?
How long should I wait for the solution?
If you need my help about solving the problem, contact me any time!
May 25, 2023 at 1:49 amHyun shinSubscriber
When can I get the solution about Intel MPI ?
I used over 100 thousand dollars in my server about 2.5 years ago!
But the server has been just idling with cosuming electricity!
ANSYS must show responsibility with this problem!
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