{"id":1204,"date":"2015-12-12T22:09:43","date_gmt":"2015-12-12T21:09:43","guid":{"rendered":"http:\/\/jvelektronika.cz\/?page_id=1204"},"modified":"2015-12-13T15:00:16","modified_gmt":"2015-12-13T14:00:16","slug":"nova-architektura-skylake-intel","status":"publish","type":"page","link":"https:\/\/jvelektronika.cz\/?page_id=1204","title":{"rendered":"Nov\u00e1 Architektura Skylake Intel"},"content":{"rendered":"<h2>Nov\u00e1 Architektura Skylake Intel<\/h2>\n<p>&nbsp;<\/p>\n<p>\u017de se posledn\u00ed dobou Intel soust\u0159ed\u00ed na mobiln\u00ed sf\u00e9ru nejen u\u00a0\u201emal\u00fdch\u201c procesorov\u00fdch architektur (Silvermont, Airmont), ale i\u00a0u\u00a0t\u011bch velk\u00fdch, p\u016fvodn\u011b desktopov\u00fdch, nen\u00ed nic nov\u00e9ho. A\u00a0v\u00a0tom, co firma \u0159\u00edk\u00e1 o\u00a0nejnov\u011bj\u0161\u00edm Skylake, je toto op\u011bt potvrzeno \u2013 tyto procesory u\u017e nejsou d\u011blan\u00e9 jen pro vysoce v\u00fdkonn\u00e9 procesory pro servery a\u00a0stoln\u00ed PC, ale vedle notebook\u016f i\u00a0pro tablety s\u00a0\u0159\u00e1dov\u011b ni\u017e\u0161\u00edmi limity spot\u0159eby. Prvn\u00ed, \u010d\u00edm se Intel v\u00a0prezentaci na IDF pochlubil, je charakteristicky to, \u017ee Skylake m\u00e1 zat\u00edm nejv\u011bt\u0161\u00ed \u0161k\u00e1lu pou\u017eit\u00ed co do typ\u016f a\u00a0rozm\u011br\u016f za\u0159\u00edzen\u00ed, v\u00a0nich\u017e jej lze pou\u017e\u00edt, a\u00a0co rozsahu TDP, na n\u011b\u017e lze tuto architekturu \u0161k\u00e1lovat. A\u00a0krom\u011b rozhran\u00ed, kter\u00e1 tradi\u010dn\u011b m\u00e1 m\u00edt desktopov\u00fd procesor, m\u00e1 tak\u00e9 r\u016fzn\u00e9 perif\u00e9rie specifick\u00e9 pro tablety, jako podporu pro senzory nebo vlastn\u00ed DSP pro zpracov\u00e1n\u00ed obrazu z\u00a0fotoapar\u00e1tu.<\/p>\n<p>&nbsp;<\/p>\n<p>Na druhou stranu to neznamen\u00e1 n\u011bjakou technologickou stagnaci. Jak hned uvid\u00edme, na architektu\u0159e Skylake Intel st\u00e1le odvedl pat\u0159i\u010dnou pr\u00e1ci s\u00a0v\u00fdvojem, v\u010detn\u011b \u00faprav zam\u011b\u0159en\u00fdch na v\u00fdkon. Ty se (krom\u011b dal\u0161\u00edch komponent jako \u010dipsetu nebo grafick\u00e9ho j\u00e1dra) t\u00fdkaj\u00ed jak jader CPU, tak tzv. \u201euncore\u201c, tedy jejich obslu\u017en\u00e9 infrastruktury a\u00a0pam\u011b\u0165ov\u00e9ho subsyst\u00e9mu.<\/p>\n<p><a href=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/111ok.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-1206\" src=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/111ok.jpg\" alt=\"111ok\" width=\"800\" height=\"450\" srcset=\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/111ok.jpg 800w, https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/111ok-300x169.jpg 300w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<h2>J\u00e1dra Skylake: \u0161ir\u0161\u00ed a\u00a0hlub\u0161\u00ed Out of Order<\/h2>\n<p>Na za\u010d\u00e1tek: zd\u00e1 se, \u017ee u\u00a0Skylake nebude existovat jen jedna z\u00e1kladn\u00ed verze j\u00e1dra, kter\u00e1 by se pak objevila v\u00a0podstat\u011b stejn\u00e1 ve v\u0161ech variant\u00e1ch \u2013 tedy jak v\u00a0notebookov\u00fdch, tak v\u00a0serverov\u00fdch a\u00a0desktopov\u00fdch \u010dipech. Intel zmi\u0148uje, \u017ee pro serverov\u00e1 CPU a\u00a0pro segment \u201eclient\u201c (tedy desktopy, notebooky, tablety) m\u00e1 dv\u011b zvl\u00e1\u0161tn\u00ed, na tyto role optimalizovan\u00e9 v\u011btv\u011b architektury. A\u010dkoliv to nen\u00ed p\u0159\u00edmo \u0159e\u010deno, tato segmentace znamen\u00e1 nap\u0159\u00edklad absenci podpory AVX-512 v\u00a0desktopov\u00e9m Skylake. Zd\u00e1 se, \u017ee tyto instrukce nejsou jen um\u011ble deaktivovan\u00e9, ale desktopov\u00fd Skylake pro n\u011b v\u016fbec nem\u00e1 hardware, tak\u017ee asi nebudou obsa\u017eeny ani v\u00a0Xeonech-E3. 512bitov\u00fd hardware pro n\u011b ponese a\u017e Skylake-EP, kter\u00fd je\u0161t\u011b nen\u00ed na po\u0159adu dne a\u00a0podle v\u0161eho bude vlastn\u011b jin\u00fdm j\u00e1drem.<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>Rychl\u00e1 zm\u011bny spot\u0159eby a v\u00fdkonu dle pot\u0159eby<\/strong><\/h3>\n<p>Novinkou \u0161est\u00e9 generace procesor\u016f Skylake je funkce Speed Shift, kter\u00e1 umo\u017e\u0148uje mnohem rychleji a tedy i efektivn\u011bji p\u0159ep\u00ednat mezi jednotliv\u00fdmi nap\u00e1jec\u00edmi stavy procesoru. Zm\u011bny se t\u00fdkaj\u00ed nejen frekvence, ale i vyp\u00edn\u00e1n\u00ed jednotliv\u00fdch \u010d\u00e1st\u00ed \u010dipu, kter\u00e9 zrovna nejsou pou\u017e\u00edvan\u00e9. To nen\u00ed obecn\u011b \u017e\u00e1dn\u00e1 novinka, ale v\u00a0p\u0159\u00edpad\u011b Skylake jde i o \u010d\u00e1sti obvod\u016f, kter\u00e9 se nap\u0159\u00edklad staraj\u00ed o instruk\u010dn\u00ed sadu AVX2. Pokud tak b\u011b\u017e\u00edc\u00ed program nevyu\u017e\u00edv\u00e1 AVX2, tato \u010d\u00e1st procesoru je vypnut\u00e1.<span id=\"copylink\"> V\u00edce na: http:\/\/connect.zive.cz\/clanky\/detaily-o-architekture-skylake-od-intelu\/sc-3-a-179382#utm_medium=selfpromo&amp;utm_source=zive&amp;utm_campaign=copylink<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel222.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-1219\" src=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel222.jpg\" alt=\"intel222\" width=\"480\" height=\"326\" srcset=\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel222.jpg 480w, https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel222-300x204.jpg 300w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Speed Shift je nav\u00edc velmi \u00fazce spojen\u00fd se samotn\u00fdm opera\u010dn\u00edm syst\u00e9mem, dokonce a\u017e tak, \u017ee n\u011bkter\u00e9 funkce jsou zat\u00edm k\u00a0dispozici u Windows 10, ale nikoli u Windows 8 a star\u0161\u00edch. Zat\u00edmco d\u0159\u00edve trvala komunikace o vyu\u017eit\u00ed \u010dipu a tedy reakce na zm\u011bnu frekvence a spot\u0159eby 30 ms, nov\u011b je to pouze jedna milisekunda.<span id=\"copylink\"><br \/>\n<\/span><\/p>\n<p>To znamen\u00e1, \u017ee procesor m\u016f\u017ee p\u0159ech\u00e1zet mnohem rychleji do \u00fasporn\u00e9ho stavu, proto\u017ee dok\u00e1\u017ee informovat o spln\u011bn\u00ed \u00falohy mnohem d\u0159\u00edve nebo naopak mnohem rychleji reagovat a nastavit zv\u00fd\u0161en\u00e9 Turbo frekvence. Opera\u010dn\u00ed syst\u00e9m tak kontroluje z\u00e1kladn\u00ed stavy dle pot\u0159eby v\u00fdkonu, spot\u0159eby a teploty, ale procesor v\u0161e je\u0161t\u011b d\u011bl\u00ed na dal\u0161\u00ed stavy, mezi kter\u00fdmi m\u016f\u017ee p\u0159ep\u00ednat.<span id=\"copylink\"><br \/>\n<\/span><\/p>\n<h2>Z\u00a0eDRAM je plnohodnotn\u00e1 L4 cache<\/h2>\n<p>Podstatn\u00e9 zm\u011bny se ud\u00e1ly u\u00a0L4 cache tvo\u0159en\u00e9 pam\u011bt\u00ed eDRAM, kterou n\u011bkter\u00e9 Skylaky budou voliteln\u011b m\u00edt. Prvn\u00ed zm\u011bnou je, \u017ee tato cache dostala v\u00a0procesoru vyhrazenou Tag RAM, co\u017e je pam\u011b\u0165ov\u00fd blok, v\u00a0n\u011bm\u017e CPU dr\u017e\u00ed informace o\u00a0tom, kter\u00e9 \u010d\u00e1sti opera\u010dn\u00ed pam\u011bti jsou v\u00a0L4 cache zkop\u00edrov\u00e1ny. Pro 128MB blok eDRAM jsou na to t\u0159eba 2\u00a0MB, kter\u00e9 byly u\u00a0Haswellu a\u00a0Broadwellu ukrojeny z\u00a0L3 cache (co\u017e je d\u016fvod, pro\u010d maj\u00ed procesory \u0159ady\u00a0H nebo\u00a0C s\u00a0eDRAM kapacitu L3 cache jen 4\u20136 m\u00edsto 6\u20138\u00a0MB). Skylake u\u017e bude m\u00edt Tag RAM vyhrazenou, tak\u017ee L3 neutrp\u00ed a\u00a0bude m\u00edt plnou velikost. Negativem je, \u017ee tyto tranzistory jsou zabr\u00e1ny i\u00a0u\u00a0\u010dip\u016f, kter\u00e9 eDRAM nemaj\u00ed, co\u017e je v\u011bt\u0161ina.<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>Rychl\u00e1 pam\u011b\u0165 eDRAM+ i pro procesor<\/strong><\/h3>\n<p>Intel za\u010dal ji\u017e d\u0159\u00edve pou\u017e\u00edvat rychlou pam\u011b\u0165 eDRAM p\u0159\u00edmo na \u010dipu, kter\u00e1 slou\u017eila jako vyrovn\u00e1vac\u00ed pam\u011b\u0165 s\u00a0vy\u0161\u0161\u00ed propustnost\u00ed pro integrovanou grafiku. Architektura Skylake ale p\u0159in\u00e1\u0161\u00ed vylep\u0161en\u00fd pam\u011b\u0165ov\u00fd syst\u00e9m a koherentn\u00ed eDRAM+ tak m\u016f\u017ee vyu\u017e\u00edvat nejen grafika, ale i procesor. V\u00a0r\u00e1mci zjednodu\u0161en\u00e9ho pohledu tak jde o formu cache dal\u0161\u00ed \u00farovn\u011b L4. \u00a0Kapacita eDRAM+ m\u016f\u017ee b\u00fdt 64 MB nebo 128 MB a bude vyr\u00e1b\u011bn\u00e1 star\u0161\u00ed 22nm technologi\u00ed.<span id=\"copylink\"><br \/>\n<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel333.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-1221\" src=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel333.jpg\" alt=\"intel333\" width=\"478\" height=\"263\" srcset=\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel333.jpg 478w, https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel333-300x165.jpg 300w\" sizes=\"(max-width: 478px) 100vw, 478px\" \/><\/a><\/p>\n<h3><strong>Grafika s\u00a0v\u00fdkonem a\u017e 1,1 TFLOPS<\/strong><\/h3>\n<p>Intel v\u00fdrazn\u011b vylep\u0161il pou\u017eitou integrovanou grafikou, kter\u00e1 umo\u017e\u0148uje snadn\u00e9 \u0161k\u00e1lov\u00e1n\u00ed (4 W a\u017e 65 W) a bude tak v\u00a0mnoha r\u016fzn\u00fdch konfigurac\u00ed dle c\u00edlov\u00fdch \u010dip\u016f. Nejvy\u0161\u0161\u00ed model ozna\u010dovan\u00fd jako GT4\/GT4e bude m\u00ed a\u017e 72 EU (exeku\u010dn\u00ed jednotky) a bude k\u00a0dispozici pod n\u00e1zvy Iris a Iris Pro.<span id=\"copylink\"><br \/>\n<\/span><\/p>\n<p>Nejv\u00fdkonn\u011bj\u0161\u00ed integrovan\u00e1 grafika od Intelu se chlub\u00ed v\u00fdpo\u010detn\u00edm v\u00fdkonem 1 152 GLOPS v\u00a0SP. Grafiku lze d\u011blit v\u00a0r\u00e1mci t\u0159\u00ed blok\u016f po 24 EU, tak\u017ee v\u00a0nab\u00eddce budou i modely s\u00a048 EU. Intel m\u016f\u017ee pochopiteln\u011b m\u011bnit i frekvence a je\u0161t\u011b d\u00e1le konfigurovat v\u00fdkon a spot\u0159ebu pou\u017eit\u00e9 grafiky.<span id=\"copylink\"> V\u00edce na: http:\/\/connect.zive.cz\/clanky\/detaily-o-architekture-skylake-od-intelu\/sc-3-a-179382#utm_medium=selfpromo&amp;utm_source=zive&amp;utm_campaign=copylink<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><strong>\u010cty\u0159i r\u016fzn\u00e9 velikosti<\/strong><\/h3>\n<p>Proto\u017ee \u010dipy Skylake budou v\u00a0\u0161irok\u00e9m spektru model\u016f ur\u010den\u00fdch pro mobiln\u00ed za\u0159\u00edzen\u00ed ale i v\u00fdkonn\u00e9 po\u010d\u00edta\u010de, Intel vylep\u0161il i velikosti jednotliv\u00fdch druh\u016f \u010dip\u016f.<span id=\"copylink\"><br \/>\n<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel444.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-1222\" src=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel444.jpg\" alt=\"intel444\" width=\"480\" height=\"190\" srcset=\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel444.jpg 480w, https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel444-300x119.jpg 300w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>\u010cipy Skylake budou k\u00a0dispozici v\u00a0r\u00e1mci \u010dty\u0159 velikost\u00ed, p\u0159i\u010dem\u017e nejmen\u0161\u00ed se bude t\u00fdkat 4,5W verz\u00ed ur\u010den\u00fdch pro tablety a ty nejten\u010d\u00ed ultrabooky. V\u00fdhodou je, \u017ee nejmen\u0161\u00ed verze jsou je\u0161t\u011b men\u0161\u00ed ne\u017e srovnateln\u00e9 \u010dipy s\u00a0architekturou Broadwell. Intel roz\u0161\u00ed\u0159il i spektrum TDP, kter\u00e9 je od zm\u00edn\u011bn\u00fdch 4,5 W a\u017e po 95 W u v\u00fdkonn\u00fdch desktopov\u00fdch \u010dty\u0159jader. V\u00fdrobci tak budou moci mnohem l\u00e9pe optimalizovat konstrukce za\u0159\u00edzen\u00ed pro konkr\u00e9tn\u00ed po\u017eadavky z\u00a0pohledu TDP a velikosti \u010dipu.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-1207\" src=\"http:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel.jpg\" alt=\"intel\" width=\"800\" height=\"450\" srcset=\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel.jpg 800w, https:\/\/jvelektronika.cz\/wp-content\/uploads\/2015\/12\/intel-300x169.jpg 300w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nov\u00e1 Architektura Skylake Intel &nbsp; \u017de se posledn\u00ed dobou Intel soust\u0159ed\u00ed na mobiln\u00ed sf\u00e9ru nejen u\u00a0\u201emal\u00fdch\u201c procesorov\u00fdch architektur (Silvermont, Airmont), ale i\u00a0u\u00a0t\u011bch velk\u00fdch, p\u016fvodn\u011b desktopov\u00fdch, nen\u00ed nic nov\u00e9ho. A\u00a0v\u00a0tom, co firma \u0159\u00edk\u00e1 o\u00a0nejnov\u011bj\u0161\u00edm Skylake, je toto op\u011bt potvrzeno \u2013 tyto procesory u\u017e nejsou d\u011blan\u00e9 jen pro vysoce v\u00fdkonn\u00e9 procesory pro [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":63,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=\/wp\/v2\/pages\/1204"}],"collection":[{"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1204"}],"version-history":[{"count":3,"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=\/wp\/v2\/pages\/1204\/revisions"}],"predecessor-version":[{"id":1223,"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=\/wp\/v2\/pages\/1204\/revisions\/1223"}],"up":[{"embeddable":true,"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=\/wp\/v2\/pages\/63"}],"wp:attachment":[{"href":"https:\/\/jvelektronika.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}