I am writing some code which is computationally expensive, but highly parallelisable. Once parallelised, I intend to run it on a HPC, however to keep the runtime down to within a week, the problem ...

I am using Intel MPI and have encountered some confusing behavior when using mpirun in conjunction with slurm. If I run (in a login node) mpirun -n 2 python -c "from mpi4py import MPI; print(MPI...

I have an MPI program which oversubscribes/overcommits its processors. That is: there are many more processes than processors. Only a few of these processes are active at a given time, though, so ...

Debugging my program on big counts of kernels, I faced with very strange error of insufficient virtual memory. My investigations lead to peace of code, where master sends small messages to each sla...