Tried adding --paths to the command, but as there are no dlls in the system, pyinstaller is unable to find them:

I know this type of question has been asked here before, but I did not find a working solution to it. I have a python file which I want to convert to an exe on Windows 10. I ran pyinstaller --onefi...

Yes impi.dll is in that folder and also in the release counterpart which isn't suprpising as the code runs through mpiexec in the oneApi comannd line. The issue seems to be purely VS integration. I don't understand why but even the workaround you suggest of having a post build event to copy impi.dll to the target directory has not worked.

This problem arose when I updated to Visual Studio Community 2022 and Intel oneAPI 2024.0 on Windows 10. I could build a simple MPI C or Fortran program successfully. However, when I ran the program inside Visual Studio, it failed because could not find impi.dll. I can confirm that impi.dll is in the oneAPI install path. The program ran successfully in the Intel oneAPI command prompt.

Recent versions of Python don't search the current directory by default and need CDLL ('./MIRcatSDK') for example. Is the other computer using a different version of Python? Also, your DLL could be referencing another dependent DLL that isn't installed on the failing computer.

Besides the mpi4py package, conda-forge is also offering a msmpi package which is probably intended to be used with the mpi4py package. This is probably the reason why installing mpi4py on the Anac...

The issue is that the file exists since it was found by util.find_library, but python doesn't think it is where it is, or maybe the output is just the default. What am I missing here? What could be failing to be unable to not just load the module, but find it? I'm sorry I don't have more output than this. P.S: I've tried reformatting the string in different ways, but the message doesn't change.

Did you run the installer and choose all the options? What you have there is just the SDK, which does NOT include the runtime components, including msmpi.dll.

It returns following error: ImportError: DLL load failed: The specified module could not be found. I tried to copy a bove lib files alongside the */Python27\Lib\site-packages\mpi4py\MPI.pyd and even to Windows/System32, but it didn't work. I appreciate your help on what DLL is missing and how to fix the error?

But when I try to start my program with mpiexec.exe, it can not find impi.dll. After some research I noticed that in prior versions impi.dll was located in the same folder as mpiexec (C:\Program Files (x86)\IntelSWTools\mpi\2019.3.203\intel64\bin) and it works right out of the box, but in the current version it seems to be missing?