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10.13. Troubleshooting — Open MPI main documentation

There are a few reasons why this can happen. The plugin is for a different version of Open MPI. See this section for an explanation of how Open MPI might try to open the “wrong” plugins. An
Frequently Asked Questions

This FAQ is for Open MPI v4.x and earlier. What kinds of systems / networks / run-time environments does Open MPI support?
FAQ: Troubleshooting building and running MPI jobs

There are two common underlying causes why a plugin fails to load: The plugin is for a different version of Open MPI. This FAQ entry has more information about this case. The plugin cannot find shared
Troubleshooting

If you have the availability, download and install the latest version of Intel MPI Library from the official product page and check if your problem persists. If the problem still persists, you can submit a ticket
Open MPI Documentation

It has not been updated in a long, long time.
Siemens AG: SIMATIC S7 MPI Direct

Check that "MPI(1)...187.5Kbps" is set as default. In addition, set [Address] which will be the destination node number (PLC Address) you set in GP-Pro EX (the default value "2" is used this time).
Siemens AG: SIMATIC S7 MPI Direct

There are Display side connector and the External Device side connector on the MPI cable. Check the Display side and the External Device side, and please connect correctly.
2. Getting help — Open MPI main documentation

If you have problems launching your MPI or OpenSHMEM application successfully, see the For problems launching MPI or OpenSHMEM applications section below for the content of what to
S7-200 Communication problem | PLCtalk

Siemens Simatic S7-200 uses PPI interface, not MPI. Some S7-200s however are capable of communication through MPI as well, but coming out of the factory you should use PPI first