{"id":821,"date":"2008-06-28T10:54:33","date_gmt":"2008-06-28T01:54:33","guid":{"rendered":"http:\/\/openlook.org\/wp\/?p=821"},"modified":"2008-06-28T10:54:33","modified_gmt":"2008-06-28T01:54:33","slug":"python-multiprocessing","status":"publish","type":"post","link":"https:\/\/openlook.org\/wp\/python-multiprocessing\/","title":{"rendered":"“\ud30c\uc774\uc36c\uc740 \uba40\ud2f0\ucf54\uc5b4 \uc918\ub3c4 \uc4f0\uc798\ub370\uae30\uac00 \uc5c6\ub098\uc694?”\uc5d0 \ub300\ud55c \ud30c\uc774\uc36c 2.6\uc758 \ub300\ub2f5"},"content":{"rendered":"

\ubc14\uc57c\ud750\ub85c \ucd08\ub529\ub3c4 \uba40\ud2f0\ucf54\uc5b4\ub85c \uc624\ub77d\ud558\ub294 \uc2dc\ub300\uac00 \uc624\uba74\uc11c \uc774\uc81c \ud30c\uc774\uc36c GIL \uacf5\ud3ec\uac00
\n \ub9ce\uc740 \uc0ac\ub78c\ub4e4\uc744 \uc704\ud611\ud558\uace0 \uc788\uc5c8\uc2b5\ub2c8\ub2e4. \uadf8\uc5d0 \ub300\ud55c \ud574\uacb0\ucc45\uc73c\ub85c \uc608\uc804\ubd80\ud130
\n \ubcd1\ub82c \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \uc704\ud55c \uc5ec\ub7ec\uac00\uc9c0 \ud504\ub808\uc784\uc6cc\ud06c, \uc608\ub97c \ub4e4\uc5b4
\n MPI<\/a>, CORBA, PyRO<\/a> \uac19\uc740 \uac83\ub4e4\uc774 \ub098\uc654\uc9c0\ub9cc, \ub2e4\ub4e4 \uba4b\uc788\uac8c \ubaa8\ub4e0 \uac78 \ud3ec\uc6a9\ud558\ub294
\n \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \ub9cc\ub4e4\ub2e4 \ubcf4\ub2c8 \uc124\uce58\uac00 \uc5b4\ub835\uac70\ub098 \ubc30\uc6b0\ub294\ub370 \ud55c\ucc38 \uac78\ub9ac\ub294 \uac8c \uacb0\uad6d \ubb38\uc81c\uac00
\n \ub3fc\uc11c \uc2e4\uc81c\ub85c \uc2ec\uac01\ud55c \uac1c\ubc1c\uc790 \uc544\ub2c8\uba74 \uadf8\ub0e5 “CPU 1\uac1c\uba74 \ucda9\ubd84\ud574\uc694”\ub77c\uace0 \ub208\uc744 \ubc18\uc9dd\uac70\ub9ac\uba70
\n \uc2a4\uc2a4\ub85c \ucd5c\uba74\uc744 \uac78\uace0 \uc788\uc5c8\ub358 \uac83\uc774 \uc0ac\uc2e4\uc785\ub2c8\ub2e4~\n<\/p>\n

\uadf8\ub798\uc11c GIL\uc758 \ud30c\uc774\uc36c \ud504\ub85c\uc81d\ud2b8 \uc790\uccb4\uc5d0\uc11c\uc758 \ud574\uacb0\ucc45\uc73c\ub85c\ub294 \uacf5\uc2dd\uc801\uc73c\ub85c \uacb0\ub860\uc5d0 \ub3c4\ub2ec\ud55c
\n \uac83\uc740 \uc544\ub2c8\uc9c0\ub9cc Adam Olsen\uc758 GIL\uc5c6\uc560\uae30<\/a> \ud504\ub85c\uc81d\ud2b8 \uac19\uc740 \uac83\ub3c4 \uc788\uc5c8\ub294\ub370,
\n \uc774\ubc88\uc5d0 \uba87\uba87 \uc0ac\ub78c\ub4e4\uc758 \uac15\ub825\ud55c \ud6c4\uc6d0\uc73c\ub85c \ud30c\uc774\uc36c 2.6\uacfc 3.0\ubd80\ud130
\n pyProcessing<\/a>\uc774 \uc0c8 \uc774\ub984 multiprocessing
\n \uc73c\ub85c \ud45c\uc900 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub85c \ub4e4\uc5b4\uc624\uac8c \ub418\uc5c8\uc2b5\ub2c8\ub2e4.\n<\/p>\n

pyprocessing\uc758 \ub2e4\ub978 \ubcd1\ub82c \ucc98\ub9ac \ub77c\uc774\ube0c\ub7ec\ub9ac\ub4e4<\/a>\uc5d0 \ub300\ud55c \uc7a5\uc810\uc740
\n \ubb50\ub2c8\ubb50\ub2c8\ud574\ub3c4 \ud45c\uc900 threading<\/a> \ubaa8\ub4c8\uacfc API\uac00 \uac19\ub2e4\ub294 \uc810\uc774\uaca0\uc8e0. threading\uc73c\ub85c \uae30\uc874\uc5d0 \uc9dc \ub193\uc740
\n \ud504\ub85c\uadf8\ub7a8\uc744 \uadf8\ub0e5 \ubaa8\ub4c8 \uc774\ub984\uacfc \ud074\ub798\uc2a4 \uc774\ub984 \uc544\uc8fc \uc57d\uac04\ub9cc \ubc14\uafd4\uc8fc\uba74 \uc4f0\ub808\ub529 \ub300\uc2e0 \uba40\ud2f0\ud504\ub85c\uc138\uc2f1\uc744
\n \uc0ac\uc6a9\ud558\uac8c \ub418\uc5b4\uc11c \uacb0\uad6d\uc5d0\ub294 \uba40\ud2f0\ucf54\uc5b4\ub97c \uc81c\ub300\ub85c \uc4f0\ub294 \ud504\ub85c\uadf8\ub7a8\uc774 \ub429\ub2c8\ub2e4. \uc2e4\uc81c\ub85c
\n \uc4f0\ub808\ub529\uac19\uc774 \ubaa8\ub4e0 \ubcc0\uc218\ub97c \uacf5\uc720\ud558\ub294 \uac83\uc740 \uc544\ub2c8\uace0, \ub9ac\ud134\uac12\ub9cc \uc804\ub2ec\uc744 \ubc1b\uae30 \ub54c\ubb38\uc5d0
\n \uc815\ud655\ud788\ub294 \uc880 \ub2e4\ub974\ub2e4\uace0 \ubcfc \uc218\ub3c4 \uc788\uc9c0\ub9cc, \ubb50 “\uadf8\ub807\uac8c \uc9dc\uba74 \uc655\ubcc0\ud0dc”\ub77c\uace0 \uc120\uc5b8\ud558\uba74 \ub418\uaca0\uc8e0. \u314e\u314e;\n<\/p>\n

\uadf8\ub798\uc11c \uc2e4\uc81c\ub85c \uc4f0\ub294 \ubaa8\uc591\uc744 \ubcf4\ub824\uace0 \uc61b\ub0a0\uc5d0 \uc720\ud589\ud588\ub358 \uc815\uaddc\uc2dd\uc73c\ub85c \uc18c\uc218 \uac80\uc0ac\ub97c \ud558\ub294 \uac78 \ud55c \ubc88 \ub3cc\ub824 \ubd24\uc2b5\ub2c8\ub2e4.\n<\/p>\n

\n
from<\/span> multiprocessing<\/span> import<\/span> Process<\/span> as<\/span> worker<\/span>\nimport<\/span> re<\/span>,<\/span> time<\/span>\n\ndef<\/span> isprime<\/span>(<\/span>n<\/span>):<\/span>\n    convert<\/span> =<\/span> ''<\/span>.<\/span>join<\/span>(<\/span>'1'<\/span> for<\/span> i<\/span> in<\/span> xrange<\/span>(<\/span>n<\/span>))<\/span>\n    return<\/span> not<\/span> re<\/span>.<\/span>match<\/span>(<\/span>r'^1?$|^(11+?)\\1+$'<\/span>,<\/span> convert<\/span>)<\/span>\n\nserial_st<\/span> =<\/span> time<\/span>.<\/span>time<\/span>()<\/span>\nfor<\/span> i<\/span> in<\/span> range<\/span>(<\/span>10<\/span>):<\/span>\n    isprime<\/span>(<\/span>1234567<\/span>)<\/span>\nprint<\/span> 'Serial:'<\/span>,<\/span> time<\/span>.<\/span>time<\/span>()<\/span> -<\/span> serial_st<\/span>\n\nparallel_st<\/span> =<\/span> time<\/span>.<\/span>time<\/span>()<\/span>\nprocesses<\/span> =<\/span> [<\/span>worker<\/span>(<\/span>target<\/span>=<\/span>isprime<\/span>,<\/span> args<\/span>=<\/span>(<\/span>1234567<\/span>,))<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>10<\/span>)]<\/span>\n[<\/span>p<\/span>.<\/span>start<\/span>()<\/span> for<\/span> p<\/span> in<\/span> processes<\/span>]<\/span>\n[<\/span>p<\/span>.<\/span>join<\/span>()<\/span> for<\/span> p<\/span> in<\/span> processes<\/span>]<\/span>\nprint<\/span> 'Parallel:'<\/span>,<\/span> time<\/span>.<\/span>time<\/span>()<\/span> -<\/span> parallel_st<\/span>\n<\/pre>\n<\/div>\n
\ubcf4\uc2dc\uba74 threading\uc73c\ub85c \ub9cc\ub4e0 \ubaa8\ub4c8\uacfc join, start, worker \ub4f1\uc758 \uc0ac\uc6a9\ubc95\uc774 \uac19\uc544\uc11c \uadf8\ub0e5 \uc27d\uac8c \ubc14\uafb8\uc2e4 \uc218 \uc788\ub294\ub370, \uc774\ub807\uac8c \ub3cc\ub824\ubcf4\uba74 \ub300\ub7b5 \uc2dc\uac04\uc774 \ub4c0\uc5bc\ucf54\uc5b4\uc5d0\uc11c\ub294 \uc774\ub807\uac8c \ub098\uc635\ub2c8\ub2e4.\n<\/p>\n
\n
Serial: 18.2321028709\nParallel: 8.54528999329\n<\/pre>\n<\/div>\n
\ub300\ub7b5 2\ubc30 \uc815\ub3c4 \ube68\ub77c\uc84c\uc8e0~ \uadf8\ub0e5 \uace0\uc804\uc801\uc778 \ub358\uc838\uc8fc\uace0 \uc2e4\ud589\ud574\uc11c \ub9ac\ud134\ubc1b\ub294 \ubc29\uc2dd \ub9d0\uace0 \ubcf4\ud1b5
\n   \uc2e4\uc81c\ub85c \ub354 \ub9ce\uc774 \uc4f0\ub294 Queue<\/a> \ubaa8\ub378\ub85c \uc77c\uafbc\uc744 \ucf54\uc5b4 \uac1c\uc218\ub9cc\ud07c \ub3cc\ub824\ubcf4\uba74 \uc774\ub807\uac8c \ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.\n<\/p>\n
\n
from<\/span> multiprocessing<\/span> import<\/span> Process<\/span>,<\/span> Queue<\/span>\nimport<\/span> re<\/span>,<\/span> time<\/span>\n\nq<\/span> =<\/span> Queue<\/span>()<\/span>\n\ndef<\/span> isprime<\/span>(<\/span>n<\/span>):<\/span>\n    convert<\/span> =<\/span> ''<\/span>.<\/span>join<\/span>(<\/span>'1'<\/span> for<\/span> i<\/span> in<\/span> xrange<\/span>(<\/span>n<\/span>))<\/span>\n    return<\/span> not<\/span> re<\/span>.<\/span>match<\/span>(<\/span>r'^1?$|^(11+?)\\1+$'<\/span>,<\/span> convert<\/span>)<\/span>\n\ndef<\/span> primeworker<\/span>():<\/span>\n    while<\/span> True<\/span>:<\/span>\n        n<\/span> =<\/span> q<\/span>.<\/span>get<\/span>()<\/span>\n        isprime<\/span>(<\/span>n<\/span>)<\/span>\n        print<\/span> time<\/span>.<\/span>time<\/span>()<\/span> -<\/span> parallel_st<\/span>\n\nparallel_st<\/span> =<\/span> time<\/span>.<\/span>time<\/span>()<\/span>\nprocesses<\/span> =<\/span> [<\/span>Process<\/span>(<\/span>target<\/span>=<\/span>primeworker<\/span>)<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>2<\/span>)]<\/span>\n[<\/span>p<\/span>.<\/span>start<\/span>()<\/span> for<\/span> p<\/span> in<\/span> processes<\/span>]<\/span>\nfor<\/span> i<\/span> in<\/span> range<\/span>(<\/span>10<\/span>):<\/span>\n    q<\/span>.<\/span>put<\/span>(<\/span>1234567<\/span>)<\/span>\n[<\/span>p<\/span>.<\/span>join<\/span>()<\/span> for<\/span> p<\/span> in<\/span> processes<\/span>]<\/span>\n<\/pre>\n<\/div>\n
\uc2dc\uac04\uc740 \ub300\ub7b5 9\ucd08 \uc815\ub3c4 \ub4ed\ub2c8\ub2e4. \uadf8\ub9ac\uace0 fd \ub118\uaca8\uc8fc\uae30\ub97c \uc9c0\uc6d0\ud558\ub294 \ud50c\ub7ab\ud3fc\ub4e4\uc5d0\uc11c\ub294 \uc18c\ucf13\ub3c4
\n   \ubc1b\uc544\ub2e4\uac00 \ub118\uae38 \uc218\uac00 \uc788\uc73c\ub2c8 \ub124\ud2b8\uc6cc\ud06c \ud504\ub85c\uadf8\ub7a8\ub3c4 \uac04\ub2e8\ud558\uac8c \uba40\ud2f0\ucf54\uc5b4\ub97c \uc4f8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n<\/p>\n
\uc544\uc8fc \uac04\ub2e8\ud558\uac8c \uba40\ud2f0\ucf54\uc5b4\ub97c \uc4f8 \uc218 \uc788\ub294 \uc7a5\uc810\uc73c\ub85c \ud45c\uc900 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub85c \ub3c4\uc785\uc774 \ub418\uae34 \ud588\uc9c0\ub9cc,
\n   \uc544\uc9c1 \ubb38\uc81c\uac00 \uba87 \uac1c \uc788\ub294\ub370\uc694. \ub300\ud45c\uc801\uc73c\ub85c FreeBSD\uc5d0\uc11c\ub294 \uc544\uc9c1 POSIX 1003.1b \uc138\ub9c8\ud3ec\uc5b4\ub97c “\uc81c\ub300\ub85c” \uc9c0\uc6d0\ud558\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc5d0 FreeBSD\uc5d0\uc11c\ub294 Queue\ub098 Lock\ub4f1\uacfc \uad00\ub828\ub41c \uac83\ub4e4\uc744
\n   \ud558\ub098\ub3c4 \uc4f8 \uc218\uac00 \uc5c6\uc2b5\ub2c8\ub2e4. (\uc704 \uc608\uc81c\ub294 \uadf8\ub798\uc11c \ub9ac\ub205\uc2a4\uc5d0\uc11c \ud14c\uc2a4\ud2b8\ud560 \uc218 \ubc16\uc5d0 \uc5c6\uc5c8\uc2b5\ub2c8\ub2e4;;)\n<\/p>\n
\uadf8 \uc678\uc5d0 MPI \ub4f1\uc758 “\uc2ec\uac01\ud55c” \ubd84\uc0b0 API\ub4e4\uc744 \uc4f0\ub358 \ud504\ub85c\uadf8\ub798\uba38\ub4e4\uc740 \uc774\uac8c \uc560\ub4e4 \uc7a5\ub09c\uc774\ub0d0 \ud558\uba74\uc11c \uc5c6\ub294 \uae30\ub2a5\ub4e4\uc744 \uc9c0\uc801\ud560 \uc218\ub3c4 \uc788\ub294\ub370, \uc544\ubb34\ub798\ub3c4 \ud45c\uc900 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub85c\uc368 \uc544\uc8fc \uac04\ub2e8\ud558\uace0
\n   \uae30\ucd08\uc801\uc778 \uae30\ub2a5\ub9cc \uc81c\uacf5\ud558\ub294 \uac83\uc774 \ubaa9\uc801\uc774\uace0, \uc14b\uc5c5\uc774 \ubcf5\uc7a1\ud558\uac70\ub098 \uac70\ub300 \ud504\ub808\uc784\uc6cc\ud06c\ub97c \ub04c\uace0 \ub2e4\ub2c8\ub294 \uacbd\uc6b0\ub77c\uba74 \ud45c\uc900\uc5d0\uc11c \uc548\uc815\uc801\uc73c\ub85c \uad00\ub9ac\ud558\uae30\uac00 \ud798\ub4e4\uaca0\uc8e0. \uadf8\ub798\uc11c multiprocessing\uc744
\n   \ub3c4\uc785\ud558\uc790 \uc8fc\uc7a5\ud55c \uac1c\ubc1c\uc790\ub294 \uc774 \ubaa8\ub4c8\uc740 \uc808\ub300 \ub2e4\ub978 \ubd84\uc0b0 \uad00\ub828 \ubaa8\ub4c8\uc744 \uc4f0\uc9c0 \ub9d0\ub77c\ub294 \uc758\ubbf8\uac00 \uc544\ub2c8\uace0
\n   \uac19\uc774 \uc4f0\uba74 \ub354\uc6b1 \uc88b\ub2e4\uace0 \uac15\uc870\ud569\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"
\ubc14\uc57c\ud750\ub85c \ucd08\ub529\ub3c4 \uba40\ud2f0\ucf54\uc5b4\ub85c \uc624\ub77d\ud558\ub294 \uc2dc\ub300\uac00 \uc624\uba74\uc11c \uc774\uc81c \ud30c\uc774\uc36c GIL \uacf5\ud3ec\uac00 \ub9ce\uc740 \uc0ac\ub78c\ub4e4\uc744 \uc704\ud611\ud558\uace0 \uc788\uc5c8\uc2b5\ub2c8\ub2e4. \uadf8\uc5d0 \ub300\ud55c \ud574\uacb0\ucc45\uc73c\ub85c \uc608\uc804\ubd80\ud130 \ubcd1\ub82c \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \uc704\ud55c \uc5ec\ub7ec\uac00\uc9c0 \ud504\ub808\uc784\uc6cc\ud06c, \uc608\ub97c \ub4e4\uc5b4 MPI, CORBA, PyRO \uac19\uc740 \uac83\ub4e4\uc774 \ub098\uc654\uc9c0\ub9cc, \ub2e4\ub4e4 \uba4b\uc788\uac8c \ubaa8\ub4e0 \uac78 \ud3ec\uc6a9\ud558\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \ub9cc\ub4e4\ub2e4 \ubcf4\ub2c8 \uc124\uce58\uac00 \uc5b4\ub835\uac70\ub098 \ubc30\uc6b0\ub294\ub370 \ud55c\ucc38 \uac78\ub9ac\ub294 \uac8c \uacb0\uad6d \ubb38\uc81c\uac00 \ub3fc\uc11c \uc2e4\uc81c\ub85c \uc2ec\uac01\ud55c \uac1c\ubc1c\uc790 \uc544\ub2c8\uba74 \uadf8\ub0e5 “CPU 1\uac1c\uba74 … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-821","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/posts\/821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/comments?post=821"}],"version-history":[{"count":0,"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/posts\/821\/revisions"}],"wp:attachment":[{"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/media?parent=821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/categories?post=821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/openlook.org\/wp\/wp-json\/wp\/v2\/tags?post=821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}