Simulation crashes with segmentation fault (11) when using Field Diagnostics

[arsampath]

Dear developers, 



I am using Smilei v4.6 to study the interaction of electron beam with a target plasma material.

One of my simulations did not start running, and I performed some simple tests to gather more information.



The two simple test simulations were run by keeping Field Diagnostics:
a) switched OFF
b) switched ON 

The test simulations do not contain any particles and is just a grid.
The memory required for running this simulation is approximately 80 GB (also seen in the results of SMILEI output file).
I ran the tests on 80 MPI cores.

The test simulation (a) starts and runs fine. 

The test simulation (b) crashes with a segmentation fault (11). 

Please find attached a zip file with input, output and error files.
Test_Smileiv4.6_Field_Diag.zip

Any further input(s) on understanding the reason for this crash would be very helpful!
Thank you very much for your time! 



[mccoys]

There is a similar issue here. It has to do with mpi + hdf5 setup. They suggest the option -mca io ompio. Could you try ?