Section: New Results

Improvement of Schnaps on multi-GPU nodes using the LAHeteroprio Scheduler

Participant : Bérenger Bramas.

The TONUS team has developed Schnaps, a discontinuous finite element solver with OpenCL and StarPU. The team members have been facing challenges in the scalability of their application when using more than one GPU. This has been the starting point of a collaboration in which Bérenger Bramas has participated in the development of Schnaps and plugged its StarPU scheduler called LAHeteroprio [9]. The improvements obtained were significant and included in a paper [50] (currently under revision).

The potential of LAHeteroprio is now demonstrated. However, setting up this scheduler remains a complicated task. Therefore, we plan to work on its automatic configuration, which will require us to perform on the fly analysis of the graph of tasks.