{"id":80342,"date":"2020-05-05T07:42:07","date_gmt":"2020-05-05T05:42:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-yadra-linux-razvivaetsya-sistema-raspredelyonnogo-vypolneniya-potokov-popcorn"},"modified":"2020-05-05T07:42:07","modified_gmt":"2020-05-05T05:42:07","slug":"dlya-yadra-linux-razvivaetsya-sistema-raspredelyonnogo-vypolneniya-potokov-popcorn","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/dlya-yadra-linux-razvivaetsya-sistema-raspredelyonnogo-vypolneniya-potokov-popcorn","title":{"rendered":"A Linux kernelhez egy elosztott sz\u00e1lfuttat\u00e1si rendszert, a Popcornt fejlesztenek.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Virginiai M\u0171szaki Egyetem aj\u00e1nlotta<\/a><\/noindex> a Linux kernel fejleszt\u0151inek egy olyan patchk\u00e9szletet, amely megval\u00f3s\u00edtja az elosztott sz\u00e1lfuttat\u00e1si rendszert Popcorn<\/a><\/noindex> (Distributed Thread Execution), amely lehet\u0151v\u00e9 teszi az alkalmaz\u00e1sok t\u00f6bb sz\u00e1m\u00edt\u00f3g\u00e9pen t\u00f6rt\u00e9n\u0151 futtat\u00e1s\u00e1t, \u00e1tmeneti sz\u00e1lmigr\u00e1l\u00e1ssal a hosztok k\u00f6z\u00f6tt. A Popcorn seg\u00edts\u00e9g\u00e9vel az alkalmaz\u00e1sok egy hoszton indulhatnak, majd megszak\u00edt\u00e1s n\u00e9lk\u00fcl \u00e1thelyezhet\u0151k egy m\u00e1sik hosztra. T\u00f6bbsz\u00e1l\u00fa programokn\u00e1l lehet\u0151s\u00e9g van a k\u00fcl\u00f6nb\u00f6z\u0151 hosztokra val\u00f3 sz\u00e1lmigr\u00e1ci\u00f3ra. <\/p>\n

A CRIU<\/a><\/noindex>projektt\u0151l elt\u00e9r\u0151en, amely lehet\u0151v\u00e9 teszi a folyamat \u00e1llapot\u00e1nak ment\u00e9s\u00e9t \u00e9s m\u00e1s rendszeren val\u00f3 folytat\u00e1s\u00e1t, a Popcorn z\u00f6kken\u0151mentes \u00e9s dinamikus migr\u00e1ci\u00f3t biztos\u00edt a hosztok k\u00f6z\u00f6tt az alkalmaz\u00e1s fut\u00e1sa k\u00f6zben, felhaszn\u00e1l\u00f3i beavatkoz\u00e1s n\u00e9lk\u00fcl, \u00e9s biztos\u00edtja a virtu\u00e1lis mem\u00f3ria konzisztenci\u00e1j\u00e1t minden olyan hoszton, ahol a sz\u00e1lak egyidej\u0171leg futnak. <\/p>\n

A Popcorn szoftverstacket patch-ek<\/a><\/noindex> alkotj\u00e1k a Linux kernelhez \u00e9s k\u00f6nyvt\u00e1r<\/a><\/noindex> melyek teszteket tartalmaznak, bemutatva, hogyan haszn\u00e1lhat\u00f3k a Popcorn rendszerek h\u00edv\u00e1sai a sz\u00e1lak migr\u00e1ci\u00f3j\u00e1ra elosztottan v\u00e9grehajtott alkalmaz\u00e1sokban. A kernel szintj\u00e9n az elosztott megosztott mem\u00f3ria (distributed shared memory) megval\u00f3s\u00edt\u00e1s\u00e1val kieg\u00e9sz\u00edt\u00e9seket javasoltak a virtu\u00e1lis mem\u00f3ria alrendszerhez, lehet\u0151v\u00e9 t\u00e9ve a k\u00fcl\u00f6nb\u00f6z\u0151 hosztokon fut\u00f3 folyamatok sz\u00e1m\u00e1ra, hogy k\u00f6z\u00f6s \u00e9s konzisztens virtu\u00e1lis c\u00edmteret \u00e9rjenek el. A virtu\u00e1lis mem\u00f3ria lapjainak konzisztenci\u00e1j\u00e1t egy protokoll biztos\u00edtja, amely a hosztokra m\u00e1solja a mem\u00f3riap\u00e9ld\u00e1nyokat olvas\u00e1si k\u00e9r\u00e9skor, \u00e9s \u00e9rv\u00e9nytelen\u00edti azokat \u00edr\u00e1skor. <\/p>\n

A gazdag\u00e9pek k\u00f6z\u00f6tti interakci\u00f3 a kernel szintj\u00e9n m\u0171k\u00f6d\u0151 \u00fczenetkezel\u0151 seg\u00edts\u00e9g\u00e9vel val\u00f3sul meg, amely TCP socketen kereszt\u00fcl tov\u00e1bb\u00edtja az adatokat. Megjegyzend\u0151, hogy a TCP\/IP-t a hibaelh\u00e1r\u00edt\u00e1s \u00e9s tesztel\u00e9s egyszer\u0171s\u00edt\u00e9se \u00e9rdek\u00e9ben haszn\u00e1lj\u00e1k a fejleszt\u00e9s sor\u00e1n. A fejleszt\u0151k tiszt\u00e1ban vannak azzal, hogy a biztons\u00e1g \u00e9s teljes\u00edtm\u00e9ny szempontj\u00e1b\u00f3l a TCP\/IP nem a legjobb m\u00f3dszer a kernel strukt\u00far\u00e1k \u00e9s a mem\u00f3riaoldalak k\u00f6z\u00f6tt tartalom \u00e1tad\u00e1s\u00e1ra a gazdag\u00e9pek k\u00f6z\u00f6tt. Minden gazdag\u00e9p, amelyen elosztott alkalmaz\u00e1sok futnak, azonos bizalmi szinttel kell rendelkezzen. A f\u0151 algoritmusok stabiliz\u00e1l\u00e1sa ut\u00e1n egy hat\u00e9konyabb sz\u00e1ll\u00edt\u00e1si m\u00f3d ker\u00fcl alkalmaz\u00e1sra.<\/p>\n

A Popcorn 2014 \u00f3ta fejl\u0151dik, mint kutat\u00e1si projekt az elosztott alkalmaz\u00e1sok l\u00e9trehoz\u00e1s\u00e1nak lehet\u0151s\u00e9geinek felt\u00e1r\u00e1s\u00e1ra, ahol a folyamatok k\u00fcl\u00f6nb\u00f6z\u0151 csom\u00f3pontokon futtathat\u00f3k heterog\u00e9n<\/a><\/noindex> sz\u00e1m\u00edt\u00e1si rendszerekben, ahol k\u00fcl\u00f6nb\u00f6z\u0151 utas\u00edt\u00e1sk\u00e9szletek (Xeon\/Xeon-Phi, ARM\/x86, CPU\/GPU\/FPGA) alap\u00fa magok kombin\u00e1lhat\u00f3k. A Linux kernel fejleszt\u0151inek aj\u00e1nlott patchk\u00e9szlet csak x86 CPU-val rendelkez\u0151 gazdag\u00e9peken val\u00f3 futtat\u00e1st t\u00e1mogat, de l\u00e9tezik egy funkcion\u00e1lisan gazdagabb Popcorn Linux verzi\u00f3 is, amely lehet\u0151v\u00e9 teszi az alkalmaz\u00e1sok futtat\u00e1s\u00e1t k\u00fcl\u00f6nb\u00f6z\u0151 CPU architekt\u00far\u00e1kkal rendelkez\u0151 gazdag\u00e9peken (x86 \u00e9s ARM). A Popcorn haszn\u00e1lat\u00e1hoz heterog\u00e9n k\u00f6rnyezetekben speci\u00e1lis ford\u00edt\u00f3program<\/a><\/noindex> sz\u00fcks\u00e9ges, amely az LLVM alap\u00fa. Egys\u00e9ges architekt\u00far\u00e1j\u00fa gazdag\u00e9peken t\u00f6rt\u00e9n\u0151 elosztott v\u00e9grehajt\u00e1s sor\u00e1n nincs sz\u00fcks\u00e9g k\u00fcl\u00f6n ford\u00edt\u00f3ra.<\/p>\n

\"A<\/a><\/noindex><\/center><\/p>\n

Ezen k\u00edv\u00fcl \u00e9rdemes megeml\u00edteni a bejelent\u00e9st<\/a><\/noindex> egy hasonl\u00f3 projektr\u0151l Telefork<\/a><\/noindex> amely egy kezdeti API protot\u00edpus megval\u00f3s\u00edt\u00e1s\u00e1val foglalkozik, hogy gyermekkih\u00edv\u00e1sokat ind\u00edtson m\u00e1s sz\u00e1m\u00edt\u00f3g\u00e9peken a klaszterben (mint a fork(), de a sz\u00e1rmaztatott folyamatot egy m\u00e1sik sz\u00e1m\u00edt\u00f3g\u00e9pre helyezi).
\n A k\u00f3d Rust nyelven \u00edr\u00f3dott \u00e9s egyel\u0151re csak a legegyszer\u0171bb folyamatok kl\u00f3noz\u00e1s\u00e1t teszi lehet\u0151v\u00e9, amelyek nem haszn\u00e1lj\u00e1k a rendszer er\u0151forr\u00e1sait, p\u00e9ld\u00e1ul f\u00e1jlokat. A telefork h\u00edv\u00e1s sor\u00e1n a mem\u00f3ria \u00e9s a folyamathoz kapcsol\u00f3d\u00f3 strukt\u00far\u00e1k \u00e1tm\u00e1sol\u00f3dnak egy m\u00e1sik gazdag\u00e9pre, ahol a szerver feldolgoz\u00f3 (telepad) fut. A ptrace seg\u00edts\u00e9g\u00e9vel a folyamat mem\u00f3ri\u00e1j\u00e1nak m\u00e1solata soros\u00edtva van, \u00e9s a folyamat \u00e1llapot\u00e1val \u00e9s regisztereivel egy\u00fctt \u00e1tker\u00fcl a m\u00e1sik gazdag\u00e9pre. Az API lehet\u0151v\u00e9 teszi a folyamat \u00e1llapot\u00e1nak f\u00e1jlba ment\u00e9s\u00e9t \u00e9s annak helyre\u00e1ll\u00edt\u00e1s\u00e1t is.<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u043e\u043b\u0438\u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442 \u0412\u0438\u0440\u0433\u0438\u043d\u0438\u0438 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b \u0434\u043b\u044f \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438 \u044f\u0434\u0440\u0430 Linux \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u043e\u0442\u043e\u043a\u043e\u0432 Popcorn (Distributed Thread Execution), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u0430\u0445 \u0441 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435\u043c \u0438 \u043f\u0440\u043e\u0437\u0440\u0430\u0447\u043d\u043e\u0439 \u043c\u0438\u0433\u0440\u0430\u0446\u0438\u0435\u0439 \u043f\u043e\u0442\u043e\u043a\u043e\u0432 \u043c\u0435\u0436\u0434\u0443 \u0445\u043e\u0441\u0442\u0430\u043c\u0438. \u041f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 Popcorn \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u0437\u0430\u043f\u0443\u0449\u0435\u043d\u044b \u043d\u0430 \u043e\u0434\u043d\u043e\u043c \u0445\u043e\u0441\u0442\u0435, \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e \u0431\u0435\u0437 \u043e\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u0435\u0440\u0435\u043c\u0435\u0449\u0435\u043d\u044b \u043d\u0430 \u0434\u0440\u0443\u0433\u043e\u0439 \u0445\u043e\u0441\u0442. […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":80343,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-80342","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A Linux kernel sz\u00e1m\u00e1ra fejl\u0151dik a Popcorn elosztott sz\u00e1lak v\u00e9grehajt\u00e1si rendszere | ProHoster","description":"A Virginiai M\u0171szaki Egyetem javasolta a Linux kernel fejleszt\u0151inek, hogy vitass\u00e1k meg a rendszert megval\u00f3s\u00edt\u00f3 hibajav\u00edt\u00f3 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