The OPAL Discussion Forum

["Gsell Achim (PSI)" <achim.gsell AT psi.ch>]

Hi Seomgyeol

> On 26 Jan 2022, at 22:48, Nicole R Neveu <nneveu AT stanford.edu> wrote:
> 
> Hi Seongyeol, 
>  
> Maybe you have accidentally installed another mpi in your conda environment.
> This happened to me recently. You can check with mpi you are using by 
> calling:
> >which mpirun
>  
> See if you get the same results w/ and w/o your conda env loaded.

Yes, most likely. You should use mpirun from the OPAL package:

$OPAL_PREFIX/bin/mpirun -np 4 opal ....

If this doesn't work, please send the output of

ldd $OPAL_PREFIX/bin/opal

before and after loading anaconda. Sourcing the OPAL profile after 
initialising anaconda might also help.

Best

Achim


>  
> Thanks, 
>  
> Nicole
>  
> From: opal-request AT lists.psi.ch <opal-request AT lists.psi.ch> on behalf of 
> Kim, Seongyeol <seongyeol.kim AT anl.gov>
> Date: Wednesday, January 26, 2022 at 12:55 PM
> To: Adelmann Andreas (PSI) <andreas.adelmann AT psi.ch>
> Cc: opal AT lists.psi.ch <opal AT lists.psi.ch>
> Subject: Re: [Opal] mpirun and anaconda
> 
> Dear Andreas,
>  
> Please find the attached pdf file for more details.
>  
> When calling the OPAL, I simply used: opal input.in where input.in 
> indicates the name of the input file.
> For the parallel running, I used: mpirun -np number opal input.in. Here I 
> put the number to 4 just in case for checking.
>  
> Indeed, when I activate the Anaconda through .bashrc, you can see that 
> there are 4 same messages when I try to do parallel run.
> On the other hand, when I deactivate the Anaconda, then it works fine. This 
> also happens when using miniconda.
>  
> Thank you for your help!
> Best regards,
> Seongyeol
> From: Adelmann Andreas (PSI) <andreas.adelmann AT psi.ch>
> Sent: Wednesday, January 26, 2022 14:20
> To: Kim, Seongyeol <seongyeol.kim AT anl.gov>
> Cc: opal AT lists.psi.ch <opal AT lists.psi.ch>
> Subject: Re: [Opal] mpirun and anaconda
>  
> Dear Seongyeol to me this is an incompatibility with the MPI library
> OPAL is build with and, your Anaconda/Python installation.  
>  
> Can you elaborate a bit more how you call OPAL for the notebook?
>  
> Cheers A
> ------
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> 
> On 26 Jan 2022, at 19:13, Kim, Seongyeol <seongyeol.kim AT anl.gov> wrote:
>  
> Seongyeol