{"id":425,"date":"2013-07-08T02:35:17","date_gmt":"2013-07-08T06:35:17","guid":{"rendered":"http:\/\/zhanxw.com\/blog\/?p=425"},"modified":"2013-07-08T02:35:17","modified_gmt":"2013-07-08T06:35:17","slug":"%e8%ae%a9r%e6%9b%b4%e5%bf%ab","status":"publish","type":"post","link":"https:\/\/zhanxw.com\/blog\/2013\/07\/%e8%ae%a9r%e6%9b%b4%e5%bf%ab\/","title":{"rendered":"\u8ba9R\u66f4\u5feb"},"content":{"rendered":"<p>\u8ba9R\u66f4\u5feb<br \/>\nSpeed up R<\/p>\n<p>\u7528R 3.0.1\u6765\u505a\u57fa\u51c6\uff0c\u7528Rscript\u8fd0\u884cR-benchmark-25.R\u8ba1\u65f6\u3002<\/p>\n<p>1) \u57fa\u51c6\u65f6\u95f4\uff1a<\/p>\n<p>197.16u 1.74s <span style=\"color: #ff0000;\">199.71r<\/span> 1703184kB 0 Rscript R-benchmark-25.R<\/p>\n<p>\u4e4b\u540e\u4e0b\u8f7d<a title=\"OpenBLAS\" href=\"https:\/\/github.com\/xianyi\/OpenBLAS\" target=\"_blank\">OpenBLAS<\/a>\uff0c\u7f16\u8bd1\uff0c\u7136\u540e\u628a\u7f16\u8bd1\u597d\u7684libopenblas.so \u66ff\u6362R\u81ea\u5e26\u7684libRblas.so.<br \/>\n2) \u6d4b\u8bd5\u5355\u7ebf\u7a0b\u7684\u901f\u5ea6\uff1a<\/p>\n<p>Single thread OpenBLAS<\/p>\n<p>105.83u 108.53s <span style=\"color: #ff0000;\">58.04r<\/span> 3072256kB 0 Rscript R-benchmark-25.R<\/p>\n<p>&nbsp;<\/p>\n<p>3) \u4e0b\u9762\u8bd5\u8bd5\u56db\u4e2a\u7ebf\u7a0b\uff1a<\/p>\n<p>Four threaded OpenBLAS<\/p>\n<p>export OPENBLAS_NUM_THREADS=4<\/p>\n<p>79.39u 23.67s <span style=\"color: #ff0000;\">58.54r<\/span> 2122688kB 0 Rscript R-benchmark-25.R<br \/>\n\u53ef\u4ee5\u770b\u51fa\u4f7f\u7528\u56db\u4e2a\u7ebf\u7a0b\u548c\u4e00\u4e2a\u7ebf\u7a0b\u8017\u65f6\u5dee\u4e0d\u591a\u4e00\u6837\u3002\u4f46\u5982\u679c\u7ec6\u770b\u77e9\u9635\u8ba1\u7b97\u65f6\u95f4\uff08\u8fd9\u91cc\u5ffd\u7565\uff09\uff0c\u56db\u4e2a\u7ebf\u7a0b\u8fd8\u662f\u80fd\u63d0\u901f\u4e0d\u5c11\u7684\u3002<br \/>\n\u4f46\u662f\u8003\u8651\u5230\u4f7f\u7528\u65b9\u4fbf\uff0c\u4e00\u4e2a\u7ebf\u7a0b\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u5e94\u8be5\u5c31\u591f\u7528\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8ba9R\u66f4\u5feb Speed up R \u7528R 3.0.1\u6765\u505a\u57fa\u51c6\uff0c\u7528Rscript\u8fd0\u884cR-benchmark-25.R\u8ba1\u65f6\u3002 1) \u57fa\u51c6\u65f6\u95f4\uff1a 197.16u 1.74s 199.71r 1703184kB 0 Rscript R-benchmark-25.R \u4e4b\u540e\u4e0b\u8f7dOpenBLAS\uff0c\u7f16\u8bd1\uff0c\u7136\u540e\u628a\u7f16\u8bd1\u597d\u7684libopenblas.so \u66ff\u6362R\u81ea\u5e26\u7684libRblas.so. 2) \u6d4b\u8bd5\u5355\u7ebf\u7a0b\u7684\u901f\u5ea6\uff1a Single thread OpenBLAS 105.83u 108.53s 58.04r 3072256kB 0 Rscript R-benchmark-25.R &nbsp; 3) \u4e0b\u9762\u8bd5\u8bd5\u56db\u4e2a\u7ebf\u7a0b\uff1a Four threaded OpenBLAS export OPENBLAS_NUM_THREADS=4 79.39u 23.67s 58.54r 2122688kB 0 Rscript R-benchmark-25.R \u53ef\u4ee5\u770b\u51fa\u4f7f\u7528\u56db\u4e2a\u7ebf\u7a0b\u548c\u4e00\u4e2a\u7ebf\u7a0b\u8017\u65f6\u5dee\u4e0d\u591a\u4e00\u6837\u3002\u4f46\u5982\u679c\u7ec6\u770b\u77e9\u9635\u8ba1\u7b97\u65f6\u95f4\uff08\u8fd9\u91cc\u5ffd\u7565\uff09\uff0c\u56db\u4e2a\u7ebf\u7a0b\u8fd8\u662f\u80fd\u63d0\u901f\u4e0d\u5c11\u7684\u3002 \u4f46\u662f\u8003\u8651\u5230\u4f7f\u7528\u65b9\u4fbf\uff0c\u4e00\u4e2a\u7ebf\u7a0b\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u5e94\u8be5\u5c31\u591f\u7528\u4e86\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[64,59,112,45],"class_list":["post-425","post","type-post","status-publish","format-standard","hentry","category-sysadmin","tag-benchmark","tag-blas","tag-openblas","tag-r"],"_links":{"self":[{"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/posts\/425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/comments?post=425"}],"version-history":[{"count":0,"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/posts\/425\/revisions"}],"wp:attachment":[{"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/media?parent=425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/categories?post=425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zhanxw.com\/blog\/wp-json\/wp\/v2\/tags?post=425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}