{"id":465,"date":"2005-07-17T22:17:55","date_gmt":"2005-07-17T13:17:55","guid":{"rendered":"http:\/\/na-inet.jp\/new-na-inet\/weblog\/2005\/07\/717-3\/"},"modified":"2005-07-17T22:17:55","modified_gmt":"2005-07-17T13:17:55","slug":"717-3","status":"publish","type":"post","link":"https:\/\/na-inet.jp\/weblog2\/2005\/07\/17\/717-3\/","title":{"rendered":"7\/17(\u65e5) \u8584\u66c7"},"content":{"rendered":"<p>\u3000\u4f55\u304b\u30cf\u30c3\u30ad\u30ea\u3057\u306a\u3044\u5929\u5019\u3067\u3042\u308b\u3002\u6691\u3044\u3068\u3044\u3048\u3070\u6691\u3044\u306e\u3060\u304c\uff0c\u30ab\u30fc\u3063\u3068\u65e5\u5149\u304c\u3055\u3093\u3055\u3093\u3068\u964d\u308a\u6ce8\u3050\u30ca\u30c4\u3063\uff0c\u3068\u3044\u3046\u7a0b\u3067\u306f\u306a\u3044\u3002\u500b\u4eba\u7684\u4e88\u6e2c\u3068\u3057\u3066\u306f\uff0c\u4eca\u3084\u52a0\u71b1\u3059\u308b\u7d4c\u6e08\u3092\u62b1\u3048\u308b\u4e2d\u56fd\u5927\u9678\u6cbf\u5cb8\u90e8\u306b\u7a81\u3063\u8fbc\u3082\u3046\u304b\u3068\u3044\u3046\u53f0\u98a8\u4e94\u53f7\u304c\u5f31\u307e\u3063\u3066\u666e\u901a\u306e\u6e29\u5e2f\u6027\u4f4e\u6c17\u5727\u3068\u306a\u308a\uff0c\u9752\u606f\u5410\u606f\u306e\u6885\u96e8\u524d\u7dda\u306b\u6700\u5f8c\u306e\u6a84\u3092\u98db\u3070\u3057\u3066\u65e5\u672c\u5217\u5cf6\u306b\u6bb4\u308a\u3053\u3093\u3067\u6d88\u3048\u53bb\u3063\u305f\u5f8c\uff0c\u6885\u96e8\u660e\u3051\u5ba3\u8a00\u3068\u306a\u308b\uff0c\u3068\u601d\u3063\u3066\u3044\u308b\u306e\u3060\u304c\uff0c\u305d\u308c\u307e\u3067\u306f\u3053\u3046\u3057\u305f\u30cf\u30c3\u30ad\u30ea\u3057\u306a\u3044\u5929\u6c17\u304c\u7d9a\u304f\u306e\u3067\u3042\u308d\u3046\u3002\u307e\u3042\uff0c\u904e\u3054\u3057\u3084\u3059\u304f\u3066\u3088\u3044\u3002<br \/>\n\u3000\u6628\u65e5\u306e\u7d9a\u304d\uff0c\u4eca\u65e5\u306f\u3044\u3088\u3044\u3088Dual Core\u306e\u672c\u9818\u767a\u63ee\uff0cPOSIX Thread\u306b\u3088\u308b\u884c\u5217\u7a4d\u306e\u4e26\u5217\u8a08\u7b97\u30d9\u30f3\u30c1\u3092\u884c\u3063\u3066\u307f\u308b\u3002\u30fb\u30fb\u30fb\u4e00\u65e5\u304c\u3053\u308c\u3067\u6f70\u308c\u3066\u3057\u307e\u3063\u305f\u3002\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u4ee5\u524d\u304b\u3089\u4f5c\u3063\u3066\u3042\u3063\u305f\u306e\u3060\u304c\uff0c\u624b\u76f4\u3057\u3092\u3057\u3066\u3044\u305f\u3089\u7d50\u69cb\u9762\u5012\uff0c\u601d\u3044\u306e\u4ed6\u6642\u9593\u304c\u639b\u304b\u3063\u3066\u3057\u307e\u3063\u305f\u306e\u3067\u3042\u308b\u3002<br \/>\n\u3000\u3053\u3093\u306a\u611f\u3058\u2193\u3067\uff0c\u4e09\u7a2e\u985e\u306e\u30de\u30b7\u30f3\u3092\u540c\u6642\u4e26\u884c\u3067\u3076\u3093\u56de\u3057\u306a\u304c\u3089\u8a08\u7b97\u3059\u308b\u3002<br \/>\n<a href=\"http:\/\/na-inet.jp\/weblog\/archives\/matmulbench_3pc.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"matmulbench_3pc.jpg\" src=\"http:\/\/na-inet.jp\/weblog\/archives\/matmulbench_3pc-thumb.jpg\" width=\"200\" height=\"159\" border=\"0\" \/><\/a><br \/>\n\u3000\u8d64\u7dda\u3067\u56f2\u3063\u305f\u3068\u3053\u308d\u306fsizeof(\u30c7\u30fc\u30bf\u578b)\u3067\u300c\u30a2\u30f3\u30bf\u306e\u57fa\u672c\u30c7\u30fc\u30bf\u578b\u306e\u30b5\u30a4\u30ba(bytes)\u3092\u6559\u3048\u3066\u3061\u3087\u300d\u3068\uff0c\u305d\u306e\u5024\u3092\u8868\u793a\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\u3042\u308b\u3002\u3055\u3066\uff0c\u3069\u30fc\u308c\u304cPentium D\u3067\u3057\u3087\u30fc\u304b\u3002<br \/>\n\u3000\u3057\u304b\u3057\uff0c\u4eca\u307e\u3067\u306f\u300c32bit\u6642\u4ee3\u306b\u306a\u3063\u3066int\u3082long\u3082\u540c\u3058\u9577\u3055\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u300d\u3068\u6559\u3048\u3066\u3044\u305f\u306e\u306b\uff0c\u3053\u308c\u304b\u3089\u306f\u300c64bit \u5bfe\u5fdcOS\u3092\u5165\u308c\u305f\u3089sizeof(long) = 2*sizeof(int)\uff0c\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u540c\u3058\u30b5\u30a4\u30ba\u300d\u3068\u6559\u3048\u306d\u3070\u306a\u3089\u306c\u3002\u3053\u308c\u304c128bit\u6642\u4ee3(\u3044\u3064\u306b\u306a\u308b\u3084\u3089)\u306b\u306a\u3063\u305f\u3089\uff0c\u3069\u30fc\u306a\u308b\u3093\u3060\u3002long long\u578b\u304c\u3067\u304d\u308b\u306e\u304b\uff0c\u306f\u305f\u307e\u305fsize(long) = 4*sizeof(int)\u306b\u306a\u308b\u306e\u304b\u3002<br \/>\n\u3000\u3067\uff0c\u7d50\u679c\u2193\u3002\u4e0a\u6bb5\u304cIEEE754 double\uff0c\u4e0b\u6bb5\u304cMPFR 10\u903250\u6841\u76f8\u5f53\u3002\u5de6\u304c\u540c\u3058\u30de\u30b7\u30f3\u306b\u304a\u3051\u308b\uff0cPthread\u306e\u6027\u80fd\u5411\u4e0a\u7387\uff0c\u53f3\u304cXeon\u30de\u30b7\u30f3\u306b\u5bfe\u3059\u308b\u6027\u80fd\u5411\u4e0a\u7387\u3067\u3042\u308b\u3002<br \/>\n<a href=\"http:\/\/na-inet.jp\/weblog\/archives\/matmulbench_graph.JPG\"><img loading=\"lazy\" decoding=\"async\" alt=\"matmulbench_graph.JPG\" src=\"http:\/\/na-inet.jp\/weblog\/archives\/matmulbench_graph-thumb.JPG\" width=\"200\" height=\"146\" border=\"0\" \/><\/a><br \/>\n\u3000HyperThreading\u306f\uff0c\u3053\u30fc\u3086\u30fc\u6570\u5024\u8a08\u7b97\u306e\u3088\u3046\u306aCPU\u8cc7\u6e90\u3092\u7af6\u5408\u3057\u307e\u304f\u308b\u51e6\u7406\u306b\u306f\u5168\u304f\u5411\u3044\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u30d0\u30ec\u30d0\u30ec\u3002Dual Core\u306f\u4e88\u60f3\u901a\u308a\u6027\u80fd\u3092\u767a\u63ee\u3057\u3066\u3044\u308b\u304c\uff0c\u6027\u80fd\u5411\u4e0a\u7387\u3067\u306fSMP\u30de\u30b7\u30f3\u306b\u8ffd\u3044\u3064\u3044\u3066\u3044\u306a\u3044\u3002\u305d\u308c\u3067\u308264bit\u5316\u306e\u5bc4\u4e0e\u304c\u3042\u3063\u3066\uff0cXeon Dual\u30de\u30b7\u30f3\u306b\u6bd4\u3079\u30661.4\u500d\uff5e2\u500d\u8fd1\u3044\u6027\u80fd\u3092\u305f\u305f\u304d\u51fa\u3057\u3066\u3044\u308b\u3002<br \/>\n\u3000\u3068\u3086\u30fc\u3053\u3068\u3067\u6211\u304cDual Core\u30de\u30b7\u30f3\u306f\uff0c\u30ef\u30b7\u304c\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u6301\u3063\u3066\u3044\u308b\u30de\u30b7\u30f3\u306e\u4e2d\u3067\u306f\u3081\u3067\u305f\u304f\u6700\u901f\u306e\u8a08\u7b97\u6a5f\u3068\u3044\u3046\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u307e\u3057\u305f\u3002\u62cd\u624b\u62cd\u624b\uff5e\u3002<br \/>\n\u3000\u3064\u30fc\u3053\u3068\u3067\uff0c\u67d0\u56fd\u7acbN\u5927\u5b66M\u7814\u7a76\u5ba4\u306e\u7686\u69d8\uff0c\u6b21\u671fCluster\u306f\u662f\u975e\uff0cDual Core + 64bit Opteron 4Way Node * 8 = 64\u30d8\u30a4\u30ec\u30c4\u3063\uff01\u30de\u30b7\u30f3\u3092\u8cb7\u3063\u3066\u304f\u3060\u3055\u3044\u307e\u305b(\u30a9\u30a4)\u3002<br \/>\n\u3000\u3057\u304b\u3057\uff0c\u3053\u306e\u6700\u901f\u30de\u30b7\u30f3\u306f\u73fe\u5728\uff0c\u304a\u4ea1\u304f\u306a\u308a\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u306e\u3067\u3059\u3002\u4f55\u6545\u306a\u3089\uff0c\u305d\u308c\u306f\uff0c\u524d\u65e5\u306e\u304a\u7d04\u675f\u901a\u308a(\u3063\u3066\u8ab0\u306b\u5411\u304b\u3063\u3066\u306e\u7d04\u675f\u3060\u3063\u3066\u3070)\uff0cnVidia\u306e\u304a\u30cb\u30e5\u30fc\u30c9\u30e9\u30a4\u30d0\u3092\u7121\u7406\u3084\u308a\u7a81\u3063\u8fbc\u3093\u3067\u3057\u307e\u3063\u305f\u304b\u3089\u3067\u3059\u3063(\u7d76\u53eb)\u3002<br \/>\n\u3000\u3067\uff0c\u6539\u3081\u3066<a href=\"ftp:\/\/download.nvidia.com\/XFree86\/Linux-x86_64\/1.0-7667\/README.txt\">Readme<\/a>\u3092\u8aad\u3093\u3067\u307f\u305f\u3089\u30fb\u30fb\u30fb<br \/>\nQ. Why does X crash when starting on Fedora Core 4?<br \/>\nA. There are interaction problems with SELinux (enabled by default on Fedora Core 4) and the NVIDIA graphics driver. NVIDIA is investigating this, but  it is recommended that you append the kernel boot option &#8220;selinux=0&#8221; to the  kernel boot line in your grub.conf file. You must reinstall the NVIDIA driver after adding this option.<br \/>\n\u3060\u3063\u3066\u30fb\u30fb\u30fb\u4f55\u3060\u305d\u308c\u30fb\u30fb\u30fb\u305d\u30fc\u3086\u30fc\u3053\u3068\u306f\u65e9\u304f\u8a00\u3063\u3066\u304f\u308c\u30fb\u30fb\u30fb\u3063\u3066\u3061\u3083\u3093\u3068\u8aad\u307e\u306a\u3044\u30ef\u30b7\u304c\u60aa\u3044\u306e\u3067\u3042\u3063\u305f\u3002<br \/>\n\u3000\u5bdd\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3000\u4f55\u304b\u30cf\u30c3\u30ad\u30ea\u3057\u306a\u3044\u5929\u5019\u3067\u3042\u308b\u3002\u6691\u3044\u3068\u3044\u3048\u3070\u6691\u3044\u306e\u3060\u304c\uff0c\u30ab\u30fc\u3063\u3068\u65e5\u5149\u304c\u3055\u3093\u3055\u3093\u3068\u964d\u308a\u6ce8\u3050\u30ca\u30c4\u3063\uff0c\u3068\u3044\u3046\u7a0b\u3067\u306f\u306a\u3044\u3002\u500b\u4eba\u7684\u4e88\u6e2c\u3068\u3057\u3066\u306f\uff0c\u4eca\u3084\u52a0\u71b1\u3059\u308b\u7d4c\u6e08\u3092\u62b1\u3048\u308b\u4e2d\u56fd\u5927\u9678\u6cbf\u5cb8\u90e8\u306b\u7a81\u3063\u8fbc\u3082\u3046\u304b\u3068\u3044\u3046\u53f0\u98a8\u4e94\u53f7\u304c\u5f31\u307e\u3063\u3066\u666e\u901a\u306e\u6e29\u5e2f &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/na-inet.jp\/weblog2\/2005\/07\/17\/717-3\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;7\/17(\u65e5) \u8584\u66c7&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[2],"tags":[],"class_list":["post-465","post","type-post","status-publish","format-standard","hentry","category-2"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/posts\/465","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/comments?post=465"}],"version-history":[{"count":0,"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/posts\/465\/revisions"}],"wp:attachment":[{"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/media?parent=465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/categories?post=465"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/na-inet.jp\/weblog2\/wp-json\/wp\/v2\/tags?post=465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}