Alex Domingo

HPC clusters are characterized by powerful hardware and fine-tuned software environments to extract as much performance as possible from the system. Surprisingly, many HPC systems typically use the default kernel provided by its Linux distribution of choice, which is a generic binary built to maximize stability and compatibility and lacks the fine-tuning for performance characteristic of such…

PMIx (Process Management Interface exascale) is a de-facto standard providing a very efficient interface to launch and control distributed tasks. It was created for exascale HPC systems, where launching a computational job can involve tens of thousands of nodes and bootstrapping MPI (Message Passing Interface) becomes cumbersome.