https://robertcarson.org/tags/mpi/Recent content in Mpi on Robert CarsonHugo -- gohugo.ioen© 2026 Robert CarsonTue, 15 Apr 2025 00:00:00 +0000https://robertcarson.org/projects/exaconstit/Tue, 15 Apr 2025 00:00:00 +0000https://robertcarson.org/projects/exaconstit/<h2 class="relative group">Where ExaConstit Came From <div id="where-exaconstit-came-from" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#where-exaconstit-came-from" aria-label="Anchor">#</a> </span> </h2> <p>When I joined the ExaAM project at LLNL, the project needed a crystal plasticity finite element code that could run on GPUs at scale. ExaAM is a DOE Exascale Computing Project effort to model metal additive manufacturing from the melt pool all the way up to the part scale, and the part that connects microstructure to part-scale mechanical response requires simulating thousands of individual grains with their own crystal orientations, phases, and slip systems. At the time, no open-source code existed that could do this on GPUs in a serious way. Most comparable codes either had no GPU support or treated it as an experimental add-on that barely worked. So we built ExaConstit from scratch with GPU execution as a first-class target from day one.</p>