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Experiences with implementing Kokkos’ SYCL backend

by Daniel Arndt, Damien T Lebrun-grandie, Christian Trott
Publication Type
Conference Paper
Book Title
IWOCL '24: Proceedings of the 12th International Workshop on OpenCL and SYCL
Publication Date
Page Numbers
1 to 11
Publisher Location
New York, New York, United States of America
Conference Name
IWOCL 2024: International Workshop on OpenCL and SYCL
Conference Location
Chicago, Illinois, United States of America
Conference Sponsor
Conference Date

With the recent diversification of the hardware landscape in the high-performance computing community, performance-portability solutions are becoming more and more important. One of the most popular choices is Kokkos. In this paper, we describe how Kokkos maps to SYCL 2020, how SYCL had to evolve to enable a full Kokkos implementation, and where we still rely on extensions provided by Intel’s oneAPI implementation. Furthermore, we describe how applications can use Kokkos and its ecosystem to already explore upcoming C++ features also when using the SYCL backend. Finally, we are providing some performance benchmarks comparing native SYCL and Kokkos and also discuss hierarchical parallelism in the SYCL 2020 interface.