___
> From: users on behalf of Fisher (US), Mark
> S via users
> Sent: Monday, December 6, 2021 3:45 PM
> To: Joachim Protze; Open MPI Users
> Cc: Fisher (US), Mark S
> Subject: Re: [OMPI users] stdout scrambled in file
>
> This usual
m: users on behalf of Fisher (US), Mark S
via users
Sent: Monday, December 6, 2021 3:45 PM
To: Joachim Protze; Open MPI Users
Cc: Fisher (US), Mark S
Subject: Re: [OMPI users] stdout scrambled in file
This usually happens if we get a number of warning message from multiple
processes. Seems
Protze
Sent: Monday, December 06, 2021 11:12 AM
To: Fisher (US), Mark S ; Open MPI Users
Subject: Re: [OMPI users] stdout scrambled in file
I would assume, that the buffering mode is compiler/runtime specific. At
least for Intel compiler, the default seems to be/have been unbuffered
for
: Joachim Protze
Sent: Monday, December 6, 2021 9:24 AM
To: Open MPI Users
Cc: Fisher (US), Mark S
Subject: Re: [OMPI users] stdout scrambled in file
Hi Mark,
"[...] MPI makes neither requirements nor recommendations for the output
[...]" (MPI4.0, §2.9.1)
From my experience, an appli
Message-
From: Joachim Protze
Sent: Monday, December 6, 2021 9:24 AM
To: Open MPI Users
Cc: Fisher (US), Mark S
Subject: Re: [OMPI users] stdout scrambled in file
Hi Mark,
"[...] MPI makes neither requirements nor recommendations for the output
[...]" (MPI4.0, §2.9.1)
From my
Hi Mark,
"[...] MPI makes neither requirements nor recommendations for the output
[...]" (MPI4.0, §2.9.1)
From my experience, an application can avoid such scrambling (still no
guarantee), if the output of lines is written atomically. C++ streams
are worst for concurrent output, as every str
5, 2021 2:48 PM
To: Open MPI Users
Cc: Ralph Castain
Subject: [EXTERNAL] Re: [OMPI users] stdout scrambled in file
EXT email: be mindful of links/attachments.
There are several output-controlling options - e.g., you could redirect the
output from each process to its own file or directory
<mailto:users@lists.open-mpi.org>
Cc: Fisher (US), Mark S
Subject: [OMPI users] stdout scrambled in file
We are using Mellanox HPC-X MPI based on OpenMPI 4.1.1RC1 and having issues
with lines scrambling together occasionally. This causes issues our convergence
checking code since we put conv
>
> --
> Jeff Squyres
> jsquy...@cisco.com
>
>
> From: users on behalf of Fisher (US),
> Mark S via users
> Sent: Thursday, December 2, 2021 10:48 AM
> To: users@lists.open-mpi.org
> Cc: Fisher (US), Mark S
> Subject: [OM
mpi.org
Cc: Fisher (US), Mark S
Subject: [OMPI users] stdout scrambled in file
We are using Mellanox HPC-X MPI based on OpenMPI 4.1.1RC1 and having issues
with lines scrambling together occasionally. This causes issues our convergence
checking code since we put convergence data there. We are not
We are using Mellanox HPC-X MPI based on OpenMPI 4.1.1RC1 and having issues
with lines scrambling together occasionally. This causes issues our convergence
checking code since we put convergence data there. We are not using any mpirun
options for stdout we just redirect stdout/stderr to a file b
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