to note that
down for the future.
Collin Strassburger (he/him)
From: 'George Bosilca' via Open MPI users
Sent: Wednesday, December 10, 2025 3:32 PM
To: [email protected]
Subject: Re: [EXTERNAL] [OMPI users] Multi-host troubleshooting
CAUTION: This email originated from outs
sday, December 10, 2025 10:42 AM
> *To:* [email protected]
> *Subject:* Re: [EXTERNAL] [OMPI users] Multi-host troubleshooting
>
>
>
> *CAUTION:* This email originated from outside of the organization. Do not
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ubject: Re: [EXTERNAL] [OMPI users] Multi-host troubleshooting
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There you go, the misconfiguration of the second host prevents UCC,
gt; Collin Strassburger (he/him)
>
> -Original Message-
> From: 'Joachim Jenke' via Open MPI users
> Sent: Wednesday, December 10, 2025 10:12 AM
> To: [email protected]
> Subject: Re: [EXTERNAL] [OMPI users] Multi-host troubleshooting
>
> Hi Collin,
>
Open MPI users
Sent: Wednesday, December 10, 2025 10:12 AM
To: [email protected]
Subject: Re: [EXTERNAL] [OMPI users] Multi-host troubleshooting
Hi Collin,
Am 10.12.25 um 15:36 schrieb 'Collin Strassburger' via Open MPI users:
> /opt/hpcx/ucc/lib/ucc/libucc_tl_cuda.so (libcuda.
Hi Collin,
Am 10.12.25 um 15:36 schrieb 'Collin Strassburger' via Open MPI users:
/opt/hpcx/ucc/lib/ucc/libucc_tl_cuda.so (libcuda.so.1: cannot open
shared object file: No such file or directory)
Is it only the second host that cannot find libcuda.so? Do you have the
library installed on both
ge Bosilca' via Open MPI users
Sent: Tuesday, December 9, 2025 5:12 PM
To: [email protected]
Subject: Re: [EXTERNAL] [OMPI users] Multi-host troubleshooting
CAUTION: This email originated from outside of the organization. Do not click
links or open attachments unless you recognize the se
>
> Warm regards,
>
> Collin Strassburger (he/him)
>
>
>
> *From:* 'Pritchard Jr., Howard' via Open MPI users <
> [email protected]>
> *Sent:* Tuesday, December 9, 2025 4:24 PM
> *To:* [email protected]
> *Subject:* Re: [EXTERNAL] [OMPI users]
10 PM
To: "[email protected]<mailto:[email protected]>"
mailto:[email protected]>>
Subject: RE: [EXTERNAL] [OMPI users] Multi-host troubleshooting
Hello Howard,
Running with export OMPI_MCA_coll=^ucc resulted in a working run of the code!
Are there any
pen-mpi.org"
Subject: RE: [EXTERNAL] [OMPI users] Multi-host troubleshooting
Hello Howard,
Running with export OMPI_MCA_coll=^ucc resulted in a working run of the code!
Are there any downsides to using OMPI_MCA_coll=^ucc to side-step this issue?
Warm regards,
Collin Strassburger (he/him)
er 9, 2025 3:54 PM
To: [email protected]
Subject: Re: [EXTERNAL] [OMPI users] Multi-host troubleshooting
CAUTION: This email originated from outside of the organization. Do not click
links or open attachments unless you recognize the sender and know the content
is safe.
Hi Collin,
Th
ollin Strassburger' via Open MPI users
Reply-To: "[email protected]"
Date: Tuesday, December 9, 2025 at 1:50 PM
To: "[email protected]"
Subject: RE: [EXTERNAL] [OMPI users] Multi-host troubleshooting
Hit “enter” a little too soon.
Here’s the rest that was intended to
000\000\000\004%\016{\377\177\000\000\326\354\2606Ww",
'\000' ...
Collin Strassburger (he/him)
From: 'Collin Strassburger' via Open MPI users
Sent: Tuesday, December 9, 2025 3:40 PM
To: [email protected]
Subject: RE: [EXTERNAL] [OMPI users] Multi-host troubleshooting
CAU
/libopen-pal.so.40
Collin Strassburger (he/him)
From: 'Pritchard Jr., Howard' via Open MPI users
Sent: Tuesday, December 9, 2025 3:27 PM
To: [email protected]
Subject: Re: [EXTERNAL] [OMPI users] Multi-host troubleshooting
CAUTION: This email originated from outside of the org
ecember 9, 2025 at 1:19 PM
To: Open MPI Users
Subject: [EXTERNAL] [OMPI users] Multi-host troubleshooting
Hello,
I am dealing with an odd mpi issue that I am unsure how to continue diagnosing.
Following the outline given by:
https://www.open-mpi.org/faq/?category=running#diagnose-multi
Hello,
I am dealing with an odd mpi issue that I am unsure how to continue diagnosing.
Following the outline given by:
https://www.open-mpi.org/faq/?category=running#diagnose-multi-host-problems,
steps 1-3 complete without any issues
i.e. ssh remotehost hostname works
Paths include the nvidia h
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