open TELEMAC-MASCARET The mathematically superior suite of solvers

Could you please confirm whether TELEMAC2D (and other modules) are unable to run when the model folder path contains spaces? I attempted to run a TELEMAC2D model using telemac2d.py with a folder name that included a space, but the execution failed. Once I removed the space from the folder name, the model ran successfully. If this is indeed a limitation, is it caused by FORTRAN, MPI, or another component?

I am using version 8.4 on Windows 11.

Is there any known workaround to enable support for folder paths that contain spaces?

After several attempts, I’ve confirmed that the issue is not related to white spaces in the model folder. For reference, my TELEMAC is installed in C:\telemac (a path without spaces) using the V8P4 installer.

However, I’m now encountering a puzzling error. Here’s what I’ve observed:

- The model always runs successfully with a single processor (i.e., no partitioning). I understand it still uses the mpiexe command.

- It fails intermittently when using PARALLEL PROCESSORS = 2 or more. Sometimes it runs fine, but often it does not.

- When it fails, changing the number of processors may occasionally allow it to run, but in most cases, it still fails.

I suspect this might be related to MS MPI — possibly due to different ranks not correctly accessing their expected input files. Could this be a file synchronization issue across MPI processes?