Tissot11

Smilei output file shows very little memory usage e.g. 60 GB while the nodes have 256 GB memory per node. In past I did encounter memory issues, but then Smilei...

It's in the stdout files I had attached with this message earlier (see the first message). It says 60 GB. I can use the performance diagnostics to see if indeed...

Looking at the memory bandwidth per socket, I see very little memory usage (see the attached file) [9777446.pdf](https://github.com/SmileiPIC/Smilei/files/14664903/9777446.pdf)

@mccoys Maximum memory per node is 256 GB. @beck-llr it’s a collisionless shock simulation so of course it can be imbalanced. I tried vectorization, SDMD, particle merging and OpenMP tasks...

Just to add that vectorization does help and compute time improves by 2x.

I do load balancing rather often, every 150 iterations. Should I even increase more? I can try it tonight.

Ok. I have launched a job and I'll let you if it works with aggressive load balancing. I have set `every=40`. Just to be sure the default load balancing is`...

Unfortunately this simulation failed even earlier than before. I attach the `err, out and patch_text `files. From patch_text file, it see almost 200 from 1000 patches per thread. So I...

Yeah, I do have a case...After I switched to Smilei v5.0 last year, I have seen numerous segmentation faults (with 2D simulations) on different machines with different compilers and libraries....

Indeed, the problems I first reported were with large 2D simulations. One of this simulation with larger domain and >25K CPUs I could manage to run with Smilei v4.7 (without...