{"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\/sq\/blog\/novosti-interneta\/dlya-yadra-linux-razvivaetsya-sistema-raspredelyonnogo-vypolneniya-potokov-popcorn","title":{"rendered":"P\u00ebr b\u00ebrtham\u00ebn Linux po zhvillohet sistemi i ekzekutimit t\u00eb shp\u00ebrndar\u00eb t\u00eb fijeve Popcorn","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Universiteti Politeknik i Virgjinias propozoi<\/a><\/noindex> p\u00ebr diskutimin e nj\u00eb serie patch-esh nga zhvilluesit e b\u00ebrtham\u00ebs Linux me implementimin e sistemit t\u00eb ekzekutimit t\u00eb shp\u00ebrndar\u00eb t\u00eb fijeve Popcorn<\/a><\/noindex> (Ekzekutimi i Fijeve t\u00eb Shp\u00ebrndara), i cili lejon organizimin e ekzekutimit t\u00eb aplikacioneve n\u00eb kompjuter\u00eb t\u00eb shumt\u00eb me shp\u00ebrndarje dhe migrim transparent t\u00eb fijeve midis hosteve. Me ndihm\u00ebn e Popcorn, aplikacionet mund t\u00eb nisin n\u00eb nj\u00eb host dhe, pa nd\u00ebrprer\u00eb funksionimin e tyre, t\u00eb transferohen n\u00eb nj\u00eb host tjet\u00ebr. N\u00eb programet me shum\u00eb fije lejohet migrimi n\u00eb hoste t\u00eb tjera t\u00eb fijeve individuale. <\/p>\n

N\u00eb kund\u00ebrshtim me projektin CRIU<\/a><\/noindex>, i cili lejon ruajtjen e gjendjes s\u00eb procesit dhe rinisjen e ekzekutimit n\u00eb nj\u00eb sistem tjet\u00ebr, Popcorn ofron migrim pa nd\u00ebrprerje dhe dinamik midis hosteve gjat\u00eb ekzekutimit t\u00eb aplikacionit, pa k\u00ebrkuar veprime nga p\u00ebrdoruesi dhe duke siguruar konsistenc\u00ebn e memories virtuale n\u00eb t\u00eb gjitha hostet ku fije t\u00eb shumta ekzekutohen nj\u00ebkoh\u00ebsisht. <\/p>\n

Grupi i softuerit t\u00eb Popcorn p\u00ebrfshin patch-et<\/a><\/noindex> n\u00eb b\u00ebrtham\u00ebn Linux dhe bibliotek\u00ebn<\/a><\/noindex> me testet q\u00eb tregojn\u00eb se si mund t\u00eb p\u00ebrdoren thirrjet sistemike Popcorn p\u00ebr migrimin e thread-eve n\u00eb aplikacionet q\u00eb ekzekutohen n\u00eb m\u00ebnyr\u00eb t\u00eb shp\u00ebrndar\u00eb. N\u00eb nivelin e b\u00ebrtham\u00ebs, jan\u00eb propozuar zgjerime t\u00eb n\u00ebn-sistemit t\u00eb memories virtuale me implementimin e memories s\u00eb shp\u00ebrndar\u00eb t\u00eb p\u00ebrbashk\u00ebt (distributed shared memory), e cila lejon proceseve n\u00eb hoste t\u00eb ndrysh\u00ebm t'i aksesojn\u00eb hap\u00ebsirat e adresave virtuale t\u00eb p\u00ebrbashk\u00ebta dhe konsistente. Konsistenca e faqeve t\u00eb memories virtuale sigurohet p\u00ebrmes nj\u00eb protokolli q\u00eb riplikon n\u00eb host faqe t\u00eb memories kur ato k\u00ebrkohen p\u00ebr lexim dhe anullon faqet e memories kur kryhen shkrime. <\/p>\n

Nd\u00ebrveprimi midis hosteve realizohet p\u00ebrmes nj\u00eb menaxheri mesazhesh q\u00eb funksionon n\u00eb nivelin e b\u00ebrtham\u00ebs dhe q\u00eb transmeton mesazhe p\u00ebrmes nj\u00eb TCP-socket. V\u00ebrehet se TCP\/IP p\u00ebrdoret p\u00ebr t\u00eb thjeshtuar procesin e debugs dhe testimit gjat\u00eb zhvillimit. Zhvilluesit e kuptojn\u00eb se sa i p\u00ebrket siguris\u00eb dhe performanc\u00ebs, TCP\/IP nuk \u00ebsht\u00eb m\u00ebnyra m\u00eb e mir\u00eb p\u00ebr t\u00eb transmetuar p\u00ebrmbajtjen e strukturave t\u00eb b\u00ebrtham\u00ebs dhe faqeve t\u00eb memories midis hosteve. T\u00eb gjitha hostet ku ekzekutohen aplikacione t\u00eb shp\u00ebrndara duhet t\u00eb ken\u00eb nj\u00eb nivel identik besimi. Pas stabilizimit t\u00eb algoritmeve kryesore, do t\u00eb aplikohet nj\u00eb form\u00eb m\u00eb efikase transporti.<\/p>\n

Popcorn ka evoluar q\u00eb nga viti 2014 si nj\u00eb projekt k\u00ebrkues p\u00ebr t\u00eb studiuar mund\u00ebsit\u00eb e krijimit t\u00eb aplikacioneve t\u00eb shp\u00ebrndara, ku rrjedhat e tyre mund t\u00eb ekzekutohen n\u00eb nodet e ndryshme n\u00eb heterogjene<\/a><\/noindex> sistemat e llogaritjes, n\u00eb t\u00eb cilat mund t\u00eb kombinohen b\u00ebrthama t\u00eb bazuara n\u00eb arkitektur\u00eb t\u00eb ndryshme komandash (Xeon\/Xeon-Phi, ARM\/x86, CPU\/GPU\/FPGA). Grupi i patches i propozuar p\u00ebr zhvilluesit e b\u00ebrthamave Linux mb\u00ebshtet vet\u00ebm ekzekutimin n\u00eb hoste me CPU x86, por ekziston nj\u00eb variant m\u00eb funksional, Popcorn Linux, i cili lejon ekzekutimin e aplikacioneve n\u00eb hoste me arkitektur\u00eb t\u00eb ndryshme CPU (x86 dhe ARM). P\u00ebr t\u00eb p\u00ebrdorur Popcorn n\u00eb mjedise heterogjene, \u00ebsht\u00eb e nevojshme t\u00eb p\u00ebrdoret nj\u00eb kompilator<\/a><\/noindex> bazuar n\u00eb LLVM. Kur ekzekutimi ndaj distribucioneve \u00ebsht\u00eb n\u00eb hoste me nj\u00eb arkitektur\u00eb, rimontimi me nj\u00eb kompilator t\u00eb ve\u00e7ant\u00eb nuk k\u00ebrkohet.<\/p>\n

\"P\u00ebr<\/a><\/noindex><\/center><\/p>\n

P\u00ebrve\u00e7 k\u00ebsaj, mund t\u00eb theksohet njoftim<\/a><\/noindex> p\u00ebr nj\u00eb projekt t\u00eb ngjash\u00ebm Telefork<\/a><\/noindex> me realizimin e nj\u00eb prototipi fillestar API p\u00ebr nisjen e proceseve f\u00ebmij\u00eb n\u00eb kompjuter\u00eb t\u00eb tjer\u00eb n\u00eb klaster (si fork(), por e transferon procesin e devijuar n\u00eb nj\u00eb kompjuter tjet\u00ebr).
\n Kodi \u00ebsht\u00eb shkruar n\u00eb gjuh\u00ebn Rust dhe deri tani lejon klonimin e proceseve t\u00eb thjeshta, ku nuk p\u00ebrdoren burime sistemore, si skedar\u00ebt. Gjat\u00eb thirrjes s\u00eb telefork, memorja dhe strukturat e lidhura me procesin klonohen n\u00eb nj\u00eb host tjet\u00ebr, ku \u00ebsht\u00eb aktivizuar procesori i sh\u00ebrbimit (telepad). Me an\u00eb t\u00eb ptrace, reflektimi i memories s\u00eb procesit serializohet dhe s\u00eb bashku me gjendjen e procesit dhe regjistrat transferohet n\u00eb hostin tjet\u00ebr. API gjithashtu lejon ruajtjen e gjendjes s\u00eb procesit n\u00eb nj\u00eb skedar dhe rind\u00ebrtimin p\u00ebrmes tij.<\/p>\n

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

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

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