April 2024

Conference Paper

Experiences with implementing Kokkos’ SYCL backend

By:
Arndt, Daniel ; Lebrun-Grandie, Damien T; Trott, Christian
Page Number:
1-11
Book Title:
IWOCL '24: Proceedings of the 12th International Workshop on OpenCL and SYCL
Publication Date:
April 11, 2024
Publisher Location:
Association for Computing Machinery, 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:
IWOCL
View DOI Listing:
https://doi.org/10.1145/3648115.3648118

Abstract

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.