[msmpi]

[husakm]

Description / Steps to reproduce the issue

Compile and run any application witch use MSYS2 + Microsoft MPI on a machine with 2 physical CPU (eg. 2x16 core AMD = 64 virtual codes)

Expected behavior

The code run will widespread after -np 32 on given system on 32 cores.

Actual behavior

The code run only on 2 cores from the 34/64 available and generate system crash.
All works OK when only 16 cores are used - code run on 16 cores.

Verification

• I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

MSYS_NT-10.0-19045

MINGW environments affected

• MINGW64
• MINGW32
• UCRT64
• CLANG64
• CLANGARM64

Are you willing to submit a PR?

No response

[MehdiChinoune]

Probably MS MPI doesn't support running on multi-CPU machine
Make sure you're using Windows workstation or Server.

[husakm]

I will do a complex diagnostic on the system, whatever non msys2 mpi applications shows similar issues. Michal

…

________________________________ From: مهدي شينون (Mehdi Chinoune) ***@***.***> Sent: Thursday, January 16, 2025 3:04:13 PM To: msys2/MINGW-packages Cc: Husak Michal; Author Subject: Re: [msys2/MINGW-packages] [msmpi] (Issue #23121) Probably MS MPI doesn't support running on multi-CPU machine Make sure you're using Windows workstation or Server. — Reply to this email directly, view it on GitHub<#23121 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ANGAWYXILXOS7BHUGNGBQYL2K6353AVCNFSM6AAAAABVJQPGECVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKOJVG44DKNZRGY>. You are receiving this because you authored the thread.Message ID: ***@***.***>