{"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\/et\/blog\/news\/dlya-yadra-linux-razvivaetsya-sistema-raspredelyonnogo-vypolneniya-potokov-popcorn","title":{"rendered":"Linuxi tuumiku jaoks areneb jaotatud teostamise s\u00fcsteem Popcorn.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Virginia Pol\u00fctehnika \u00dclikool soovitust<\/a><\/noindex> arutamiseks Linuxi tuumaarendajate seas patches, mis realiseerib hajutatud niidi t\u00e4itmise s\u00fcsteemi Popcorn<\/a><\/noindex> (Hajutatud Niidi T\u00e4itmine), mis v\u00f5imaldab rakenduste k\u00e4itamise korraldamist mitmel arvutil, jagades ja pakkudes l\u00e4bipaistvat niitide migreerimist hostide vahel. Popcorn'i abil saavad rakendused olla k\u00e4ivitatud \u00fchel hostil ning neist katkestamata teisaldada teise hosti. Mitme niidiga programmides on lubatud teatud niitide migreerimine teistele hostidele. <\/p>\n

Erinevalt projektist CRIU<\/a><\/noindex>, mis v\u00f5imaldab protsessi staatuse salvestamist ja j\u00e4tkamist teisel s\u00fcsteemil, Popcorn pakub sujuvat ja d\u00fcnaamilist migreerimist hostide vahel rakenduse k\u00e4itamise ajal, ilma et kasutaja peaks sekkuma ja tagades virtuaalse m\u00e4lulehtri j\u00e4rjepidevuse k\u00f5igis hostides, kus samaaegselt t\u00f6\u00f6tavad niidid. <\/p>\n

Popcorn'i tarkvarastek koostab pat\u0161id<\/a><\/noindex> Linuxi tuumast ja raamatukogu<\/a><\/noindex> testidest, mis demonstreerivad, kuidas kasutada Popcorn'i s\u00fcsteemik\u00f5nesid niitide migreerimiseks hajutatud rakendustes. Tuuma tasandil pakutakse virtuaalse m\u00e4lus\u00fcsteemi laiendusi, mis realiseerivad jagatud hajutatud m\u00e4lu, v\u00f5imaldades protsessidel erinevatel hostidel p\u00e4\u00e4seda \u00fchisele ja j\u00e4rjepidevale virtuaalsele aadressiruumile. Virtuaalse m\u00e4lulehtede j\u00e4rjepidevust toetatakse protokolli abil, mis replikoodib lehtede m\u00e4lud hostidesse, kui neid loetakse ja t\u00fchistab lehtede m\u00e4lu kirjutamise ajal. <\/p>\n

Hostide vaheline suhtlemine toimub tuuma tasemel t\u00f6\u00f6tava s\u00f5numi t\u00f6\u00f6tleja kaudu, mis edastatakse TCP-soketi kaudu. Tuleb m\u00e4rkida, et TCP\/IP-d kasutatakse arenduse k\u00e4igus testimise ja t\u00f5rkeotsingu lihtsustamiseks. Arendajad m\u00f5istavad, et turbe- ja j\u00f5udluse aspektist ei ole TCP\/IP parim viis edastada tuuma struktuuride ja m\u00e4lulehtede sisu hostide vahel. K\u00f5ik hostid, millel hajutatud rakendused t\u00f6\u00f6tavad, peavad olema identsete usaldusastmete tasandel. Peamiste algoritmide stabiliseerimisel rakendatakse t\u00f5husamat transporti.<\/p>\n

Popcorn on arenenud alates 2014. aastast kui teadusprojekt, mille eesm\u00e4rk on uurida ja arendada jaotatud rakendusi, mille voogusid saab k\u00e4itada erinevates s\u00f5lmedes. heterogeensed<\/a><\/noindex> arvutis\u00fcsteemid, kus saab kombineerida erinevate k\u00e4su komplektide arhitektuure (Xeon\/Xeon-Phi, ARM\/x86, CPU\/GPU\/FPGA). Pakutud Linuxi tuumaarendajate jaoks m\u00f5eldud patchide komplekt toetab ainult k\u00e4itamist x86 CPU-dega hostidel, kuid olemas on ka funktsionaalsem variant Popcorn Linux, mis v\u00f5imaldab rakenduste k\u00e4itamist erinevate CPU arhitektuuridega hostidel (x86 ja ARM). Popcorni kasutamiseks heterogeensetes keskkondades on vajalik kasutada spetsiaalset kompilaatorit<\/a><\/noindex> LLVM p\u00f5hjal. Jaotatud k\u00e4itamisel \u00fche arhitektuuri hostidel ei ole eraldi kompilaatoriga uuesti \u00fclesehitamine vajalik.<\/p>\n

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

Samuti v\u00f5ib m\u00e4rkida teade<\/a><\/noindex> sarnase projekti Telefork<\/a><\/noindex> esialgse API protot\u00fc\u00fcbi rakendamisega, mis v\u00f5imaldab t\u00fctarprotsesside k\u00e4itamist teistel arvutitel klastris (nagu fork(), kuid kantakse edasi hargnevat protsessi teisele arvutile).
\n Kood on kirjutatud Rust keeles ja v\u00f5imaldab praegu kloonida ainult k\u00f5ige lihtsamaid protsesse, mis ei kasuta s\u00fcsteemiressursse, nagu failid. Teleforki v\u00e4ljakutse k\u00e4ivitamisel kopeeritakse m\u00e4lu ja protsessiga seotud struktuurid teisele hostile, millel t\u00f6\u00f6tab serveri k\u00e4itleja (telepad). Ptrace abil protsessi m\u00e4lu peegeldatakse, serialiseeritakse ja koos protsessi seisundi ja registritega kantakse edasi teisele hostile. API v\u00f5imaldab ka salvestada protsessi seisundi faili ja taastada selle kaudu.<\/p>\n

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

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

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