OpenMPI-5.0.7 libopen-rte.so.0 missing

[Natasha Evans]

Hi, 

I'm running a program that uses OpenMPI and I keep getting this error: 

"error while loading shared libraries: libopen-rte.so.0: cannot open shared object file: no such file or directory"

Does anybody know if this error is due to improper installation of OpenMPI or does libopen-rte.so.0 not exist in the newer OpenMPI versions? I'm currently using OpenMPI version 5.0.7

Thanks! 

[gil...@rist.or.jp]

Natasha,

Since Open MPI 5, the previous ORTE runtime has been replaced with PRRTE https://github.com/openpmix/prrte

Consequently, there is no more libopen-rte.so

Cheers,

Gilles

On 2025/04/10 07:04

Natasha Evans <gmn...@gmail.com> wrote:

To unsubscribe from this group and stop receiving emails from it, send an email to users+un...@lists.open-mpi.org .

[Jeff Squyres (jsquyres)]

Gilles raises a good point: if you think you're using Open MPI v5.0.x, but you're somehow not finding a library that is from a prior version of Open MPI, then you may be inadvertently mixing using multiple different versions of Open MPI.

Make sure that your environment (e.g., your PATH and LD_LIBRARY_PATH) are uniformly set to all use the exact same version (and same installation, if possible) of Open MPI.

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From: us...@lists.open-mpi.org <us...@lists.open-mpi.org> on behalf of gil...@rist.or.jp <gil...@rist.or.jp>
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Subject: Re: [OMPI users] OpenMPI-5.0.7 libopen-rte.so.0 missing