{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T06:57:36Z","timestamp":1761807456467},"reference-count":4,"publisher":"World Scientific Pub Co Pte Lt","issue":"04","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parallel Process. Lett."],"published-print":{"date-parts":[[2008,12]]},"abstract":"<jats:p> In this work we present an initial performance evaluation of Intel's latest, second-generation quad-core processor, Nehalem, and provide a comparison to first-generation AMD and Intel quad-core processors Barcelona and Tigerton. Nehalem is the first Intel processor to implement a NUMA architecture incorporating QuickPath Interconnect for interconnecting processors within a node, and the first to incorporate an integrated memory controller. We evaluate the suitability of these processors in quad-socket compute nodes as building blocks for large-scale scientific computing clusters. Our analysis of intra-processor and intra-node scalability of microbenchmarks, and a range of large-scale scientific applications, indicates that quad-core processors can deliver an improvement in performance of up to 4x over a single core depending on the workload being processed. However, scalability can be less when considering a full node. We show that Nehalem outperforms Barcelona on memory-intensive codes by a factor of two for a Nehalem node with 8 cores and a Barcelona node containing 16 cores. Further optimizations are possible with Nehalem, including the use of Simultaneous Multithreading, which improves the performance of some applications by up to 50%. <\/jats:p>","DOI":"10.1142\/s012962640800351x","type":"journal-article","created":{"date-parts":[[2008,12,4]],"date-time":"2008-12-04T06:40:57Z","timestamp":1228372857000},"page":"453-469","source":"Crossref","is-referenced-by-count":33,"title":["A PERFORMANCE EVALUATION OF THE NEHALEM QUAD-CORE PROCESSOR FOR SCIENTIFIC COMPUTING"],"prefix":"10.1142","volume":"18","author":[{"given":"KEVIN J.","family":"BARKER","sequence":"first","affiliation":[{"name":"Performance and Architecture Lab (PAL), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"KEI","family":"DAVIS","sequence":"additional","affiliation":[{"name":"Performance and Architecture Lab (PAL), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"ADOLFY","family":"HOISIE","sequence":"additional","affiliation":[{"name":"Performance and Architecture Lab (PAL), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"DARREN J.","family":"KERBYSON","sequence":"additional","affiliation":[{"name":"Performance and Architecture Lab (PAL), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"MIKE","family":"LANG","sequence":"additional","affiliation":[{"name":"Performance and Architecture Lab (PAL), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"SCOTT","family":"PAKIN","sequence":"additional","affiliation":[{"name":"Performance and Architecture Lab (PAL), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"JOSE CARLOS","family":"SANCHO","sequence":"additional","affiliation":[{"name":"Performance and Architecture Lab (PAL), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2011,11,21]]},"reference":[{"key":"rf9","doi-asserted-by":"crossref","first-page":"1","DOI":"10.13182\/NSE02-A2262","volume":"141","author":"Baker R. S.","journal-title":"Nuclear Science & Engineering"},{"key":"rf11","doi-asserted-by":"publisher","DOI":"10.1007\/BF01185653"},{"key":"rf12","first-page":"198","volume":"65","author":"Koch K. R.","journal-title":"Trans, of the American Nuclear Soc."},{"key":"rf13","doi-asserted-by":"publisher","DOI":"10.1177\/109434200001400405"}],"container-title":["Parallel Processing Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.worldscientific.com\/doi\/pdf\/10.1142\/S012962640800351X","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,8,6]],"date-time":"2019-08-06T12:16:41Z","timestamp":1565093801000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.worldscientific.com\/doi\/abs\/10.1142\/S012962640800351X"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,12]]},"references-count":4,"journal-issue":{"issue":"04","published-online":{"date-parts":[[2011,11,21]]},"published-print":{"date-parts":[[2008,12]]}},"alternative-id":["10.1142\/S012962640800351X"],"URL":"https:\/\/doi.org\/10.1142\/s012962640800351x","relation":{},"ISSN":["0129-6264","1793-642X"],"issn-type":[{"value":"0129-6264","type":"print"},{"value":"1793-642X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,12]]}}}