mpirun error

[Xiang Huang]

Hello Everyone, 

I just installed the most recent version of ATS, and it is "ATS version 1.5-dev_28cbfab9". It's single run goes normally but ran into an error when starts "mpirun". I double-checked "LD_LIBRARY_PATH" and it is correct.

$MPI_DIR/mpirun

/n/swdev/packages/Ubuntu-18.04-x86_64/mpi/openmpi-3.1.6-gcc-9.3.0/bin/mpirun: symbol lookup error: /n/swdev/packages/Ubuntu-18.04-x86_64/mpi/openmpi-3.1.6-gcc-9.3.0/bin/mpirun: undefined symbol: opal_libevent2022_event_base_loop

Any suggestions on fixing this error? Thank you very much!

Xiang

[Amanzi-ATS Users]

I don't think there is much we can do here.  This looks like a problem with your mpi installation.  I would have guessed the problem was in LD_LIBRARY_PATH for an Ubuntu machine -- it includes /n/swdev/packages/Ubuntu-18.04-x86_64/mpi/openmpi-3.1.6-gcc-9.3.0/lib  ?  And that is actually the location of your mpi libraries?

How did you install this openmpi?  This looks like a EES-16 machine to me --- is that right, and if so, can you check with Chuck Abolt as to what MPI he uses for his builds?

Ethan

[Rich Fiorella]

I think we might have figured this one out - suspect it was an issue with a module.

Rich

[Chuck Abolt]

Hi Xiang, try /usr/bin/mpirun. I found that I had to switch to that one after the EES servers were upgraded to Ubuntu 20.

Chuck

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[XHuang]

Hi Ethan, thanks for your kind replies! Yes, I installed a master version of ATS on the EES-16 server, which was recently updated to Ubuntu 20, as Chuck mentioned. 

Thanks very much for Rich’s check and for suggesting re-loading the module; now, parallel run works. 

All the best,

Xiang

On Wednesday, May 31, 2023 at 12:53:46 PM UTC-6 Amanzi-ATS Users wrote: