Error While Running Stokes Flow Algorithm

[DMaxJ]

Hi,

I am here again with another problem. Few days ago I was able to work with the installation of "dev" version of both OpenPNM and porespy. I was working with the older versions of both until 2020. Right now, I am getting some crazy behaviour when I run stokes flow algorithm. Spyder crashes, Before I can read the output on the screen, I get the following message
The system cannot find the path specified. OMP: Error #15: Initializing libiomp5md.dll, but found libiomp5md.dll already initialized. OMP: Hint This means that multiple copies of the OpenMP runtime have been linked into the program. That is dangerous, since it can degrade performance or cause incorrect results. The best thing to do is to ensure that only a single OpenMP runtime is linked into the process, e.g. by avoiding static linking of the OpenMP runtime in any library. As an unsafe, unsupported, undocumented workaround you can set the environment variable KMP_DUPLICATE_LIB_OK=TRUE to allow the program to continue to execute, but that may cause crashes or silently produce incorrect results. For more information, please see http://www.intel.com/software/products/support/.

Any suggestions from your end? I am running on Windows10, Anaconda and porespy and openpnm installed in a virtual environment. Everything works fine until I apply boundary conditions. When
perm.run()
is keyed in it quickly shows some output, but the error message comes before I can read it.

[ma-sadeghi]

Hi @DMaxJ Could you please run your script from terminal (or Anaconda Command Prompt in Windows)? Just run the following command in your "Anaconda Command Prompt":

python my_script.py

This way, at least you should be able to have the entire output.

[ma-sadeghi]

Also, my goto first step in these scenarios is to reproduce the error in a fresh virtualenv. Could you please do that as well?

[DMaxJ]

Thank you. I tried it from the terminal and it worked without trouble. However, with Spyder the error continues

[ma-sadeghi]

Are you switching to the correct virtualenv in Spyder?

[DMaxJ]

Yes

[DMaxJ]

1. I created a fresh virtual environment and installed both openpnm and porespy. When I run the same code on Spyder, I get the same error.

2. Then I tried something else
   import os os.environ['KMP_DUPLICATE_LIB_OK']='True'

It seems to work. I just used it after some random internet search, and I do not think it is the right way to solve the problem
3. When I remove those two lines, I get the same error back.
4. No I have a new problem. The simulation fails when I try from the command prompt.

[DMaxJ]

So far the work around is
s.settings.default_solver = "ScipySpsolve"
like mentioned in #2307

The problem seems to be with pardiso solver.

[jgostick]

Sorry for making you do so much troubleshooting for something that is a known problem: #2307

[DMaxJ]

It is okay. Some times things just go crazy. Thanks.