Re: [hwloc-users] [OMPI users] hwloc error

[Brice Goglin]

Hello








Brice



Le 24/08/2021 à 00:20, Dwaipayan Sarkar a écrit :

For Windows, we have prebuilt zipballs on the download pages. Try lstopo using such a zipball from a text console first. If you want to build, the process depends on whether you use MSVC or cygwin or mingw. Let's avoid that for now. Which Windows version are you using? Is there some sort of virtual machine on top of it? Can you run `coreinfo -cgnlsm` and send the output? I have never seen a Windows report such invalid information.

Hello Brice

Thanks for your reply.

I forgot to mention that my machine is a windows one and not Linux.

I did download the new version of hwloc.



cd $HWLOC

./configure --prefix=<where to install hwloc>

make -j<N> install

Thanks

Dwaipayan

*From:* Dwaipayan Sarkar
*Sent:* August-23-21 6:13 PM
*To:* hwloc-users@lists.open-mpi.org; Brice Goglin <brice.gog...@inria.fr>
*Subject:* RE: [OMPI users] hwloc error

Hello Brice

Thanks for your reply.

I forgot to mention that my machine is a windows one and not Linux.

I did download the new version of hwloc.



cd $HWLOC

./configure --prefix=<where to install hwloc>

make -j<N> install

Thanks

Dwaipayan

Could you brief me the steps for installing it? Are the steps similar to this? Could you brief me the steps for installing it? Are the steps similar to this? *From:* users <users-boun...@lists.open-mpi.org <mailto:users-boun...@lists.open-mpi.org>> *On Behalf Of *Brice Goglin via users

*Sent:* August-23-21 5:32 PM
*To:* us...@lists.open-mpi.org <mailto:us...@lists.open-mpi.org>
*Cc:* Brice Goglin <brice.gog...@inria.fr <mailto:brice.gog...@inria.fr>>
*Subject:* Re: [OMPI users] hwloc error

Hello Dwaipayan

You seem to be running a very old hwloc (maybe embedded inside an old Open MPI release?). Can you install a more recent hwloc from https://www.open-mpi.org/projects/hwloc/ <https://www.open-mpi.org/projects/hwloc/>, build it, and run its "lstopo" to check whether the error remains?

If so, could you open an issue on the hwloc github at https://github.com/open-mpi/hwloc/issues/new <https://github.com/open-mpi/hwloc/issues/new>?

Your error looks strange. We've seen issue with such "intersection" errors in the past because the BIOS or ACPI was reporting invalid cache or NUMA affinity with respect to CPU packages. But intersecting packages is really unexpected. Among what's requested in the issue template, the important information that we'll need is the tarball generated by hwloc-gather-topology, it will allow us to check that Linux is indeed reporting invalid socket information. By the way, this mailing list is for Open MPI, the hwloc mailing list is hwloc-users@lists.open-mpi.org <mailto:hwloc-users@lists.open-mpi.org>. Please use that list if you want to discuss by email instead of in a github issue.

Thanks

Brice

Le 23/08/2021 à 19:36, Dwaipayan Sarkar via users a écrit :

    Hello

    I am Dwaipayan, a PhD graduate student at the Western University
    Canada.

    Recently, I have been facing issues while using the CFD software
    package ANSYS Fluent in my local machine which have two Xeon
    processors with 12 cores each.

    Whenever I am trying to run a simulation in parallel, it gives me
    this warning

    Text Description automatically generated with low confidence

    And then when I run the simulation it abruptly stops giving me a
    segmentation fault

    Can you help me fix this issue, please?

    I can provide with you more information of the local desktop machine.

    Thanks

    Dwaipayan

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