CFX with EPYC 7742 problem with Windows server!

- March 30, 2023 at 1:23 am
  
  Hyun shin
  Subscriber
  
  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 pm
  
  rfblumen
  Ansys 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 pm
    
    Hyun shin
    Subscriber
    
    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 am
    
    Hyun shin
    Subscriber
    
    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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