{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,20]],"date-time":"2025-02-20T05:16:56Z","timestamp":1740028616277,"version":"3.37.3"},"reference-count":0,"publisher":"IOS Press","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2012]]},"abstract":"<jats:p>Heterogeneous architectures, combining traditional multicore CPUs with energy-efficient accelerators, can provide a viable approach to exascale computing. Such hybrid architectures are, however, difficult to program, requiring specific low-level rewriting of application codes. Here we describe Cray's approach to heterogeneous computing and the first Cray hybrid supercomputing system, the Cray XK6, with its unified x86\/GPU programming environment. We also describe how the proposed standard for OpenMP accelerator directives offers a high-level programming model, and develop a GPU version of the Himeno benchmark on an early Cray XK6 prototype.<\/jats:p>","DOI":"10.3233\/978-1-61499-041-3-557","type":"book-chapter","created":{"date-parts":[[2025,2,19]],"date-time":"2025-02-19T15:30:51Z","timestamp":1739979051000},"source":"Crossref","is-referenced-by-count":0,"title":["Cray's Approach to Heterogeneous Computing"],"prefix":"10.3233","author":[{"family":"Ansaloni Roberto","sequence":"additional","affiliation":[]},{"family":"Hart Alistair","sequence":"additional","affiliation":[]}],"member":"7437","container-title":["Advances in Parallel Computing","Applications, Tools and Techniques on the Road to Exascale Computing"],"original-title":[],"deposited":{"date-parts":[[2025,2,19]],"date-time":"2025-02-19T15:36:41Z","timestamp":1739979401000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.medra.org\/servlet\/aliasResolver?alias=iospressISSNISBN&issn=0927-5452&volume=22&spage=557"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012]]},"references-count":0,"URL":"https:\/\/doi.org\/10.3233\/978-1-61499-041-3-557","relation":{},"ISSN":["0927-5452"],"issn-type":[{"value":"0927-5452","type":"print"}],"subject":[],"published":{"date-parts":[[2012]]}}}