14. Scaling a High Energy Laser Physics Application (VBL) Using MPI and the RAJA Portability Layer
Event Type
Poster
TimeTuesday, November 15th8:30am - 5pm
LocationLower Lobby Concourse
DescriptionLLNL is a world leader in designing and maintaining high energy lasers, built upon decades of leadership in the modeling of high energy laser systems. Here we present initial results for a parallel mini-app based on the National Ignition Facility’s (NIF) Virtual Beamline (VBL) code, a single-node laser physics modeling engine. Recent advances in ultra-intense short-pulse laser systems are driving us to develop massively parallel laser physics capabilities similar to the laser physics code Miró (an MPI-only implementation) to support the multi-order increase in time/space resolution needed for these types of broadband, chirped-pulse amplification lasers. Here we present a demonstration of our new scalable simulation code architecture using MPI and the RAJA Portability Layer. This hybrid parallelization approach promises to bridge the gap in resolution allowing us to deliver future simulations with the requisite physics fidelity at an unprecedented scale.
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