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Rahulkumar Gayatri

Rahul nersc
Rahulkumar Gayatri, Ph.D.
Application Performance Specialist
Fax: (510) 486-6459
1 Cyclotron Road, Bldg 59, Room 4023J
Mail Stop 59R4010A
Berkeley, CA 94720

Biographical Sketch

Rahulkumar Gayatri is an Application Performance Specialist working in the Application Performance Group (APG) at NERSC. His current projects include the the EXAALT ECP project and he is also involved with the Kokkos development team.

In his time as a NERSC staff member, Rahul optimized the SNAP potential in LAMMPS MD package for next generation architectures. He is currently working on the OpenMPTarget backend of the Kokkos programming model.

Rahulkumar Gayatri got his PhD in the area of parallel programming models from Barcelona Supercomputing Center in March 2015 under the supervision of Dr Rosa Maria Badia and Eduard Ayguade. His thesis work was on synchronization of multiple threads on a multi-core processor.

Later he worked in the HPC group at Wipro Infotech where he provided parallel programming solutions to clients. As a part of this group he worked with the MOOSE project, which simulates the behavior of a cell in a human brain. He parallelized the linear solvers that simulate the effect of chemical and electrical stimuli given to a cell.

Research Interests

Rahulkumar Gayatri, Kevin Gott, Jack Deslippe. Comparing Managed Memory and ATS with and without Prefetching on NVIDIA Volta GPUs. PMBS Workshop, SC 2019.



  • Parallelizing Breadth First Search Using CELL Broadband Engine. HiPC(2008)