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AMD Bulldozer [official thread]

R_O_N_I_N

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Mogli su bash i da se ne ciganishu za taj jedan pin...:D

Al' dobro....taman ce X6 da pojeftini kad budem pri keshu...:d
 

monteboy

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Mogli su bash i da se ne ciganishu za taj jedan pin...:D

Al' dobro....taman ce X6 da pojeftini kad budem pri keshu...:d
Verujem da je dizajn po sebi to zahtevao jer inache nebi imalo smisla da pricaju na pocetku jedno a od stredine faze izrade nesto drugo. Mozda su naleteli na nepredvidivi problem koji je na kraju zahtevao koji dodatni pin. Samo neka to oni izbace blagovremeno na trziste :)
 

R_O_N_I_N

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Malo sam se shalio. :)
Dodje mi neshto krivo sto necu moci da bocnem neko to chudo u ovu plochu. Ali sa druge strane,ovi shto mogu da se bocnu ce da pojeftine...

Jbg,neshto dobijesh,neshto izgubish...:D
 

blackmore1911

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Kad su vec izbacili jedan pin, bolje da su nazvali platformu AM3- :rotf:
 

ThePocetnik

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Samo se nadam da su "procureli" rezultati tacni.Ali to takodje znaci, da se mozda isplati ne uzimati sada AM3 platformu, vec sacekati AM3+ a verujem da mnogi ne vole da cekaju.
 
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Ace Rimmer

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Kad su vec izbacili jedan pin, bolje da su nazvali platformu AM3- :rotf:
Pitanje da li se taj pin uopće koristi i za što, uglavnom razlika je u onim plastičnim izbočinama na socketu (ako sam dobro shvatio, jedan pin je sakriven na AM3 socketu i fizički se ne može ugurati AM3+ procesor).

Možda je to napravljeno iz razloga da se izbjegne situacija kao što je bila sa AM2 socketom i AM2+ procesorima, kad je AMD najavio da je samo do updejta BIOSa, a realno stanje je ipak bilo dosta drugačije. Odnosno, nije svaka AM2 ploča mogla podržati nove procesore.
 
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Iraklije

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samo cu reci OMG:eek: ako je ovo istina stavljam bubreg na prodaju i kupujem bulldozer :D
 

Ace Rimmer

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illidan

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sta sam ja govorio za beli socket :d

 

monteboy

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illidan

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to se lakse ofarba :p
 

monteboy

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illidan

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ali mozes lako da zapusis one rupice.
 

voodoons

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igla rad :P
 

monteboy

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Moja malenkost i voodons nismo moderi .... ali bi se snasli nekako da ih otpusimo ... daj malo kreativnosti Guru :)

Ali kad se malo bolje razmisli ta povrsina sa rupicama je ionako pokrevena CPU'om tako da ionako u sklopljenjim sistemima nece predstavljati opticki problem veci problem je plastika socketa okolo... Drukse receno kad lakiras zastitis povrsinu sa rupicama a ostalo u crno i mirna backa.
 
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animaN

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Aman ljudi prichamo o boji socketa :D hahah Mislim da je vreme da zatvorimo forum na par dana u nadi da cemo svi proshetati malo na svez vazduh!

:sekira:
 

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Bulldozer vs. Phenom2

- 20% vise takta u odnosu na Thuban (Osnovni takt 3500MHz + 500MHz Turbo)
- 20% vise northbridge takta (2400MHz)
- redesign uncore sekcije i sa time 50% vise performansi
- oko 25% vise IPC'a (Modul vs. K10.5 Core)
- Sve SSE instrukcije koje i plavi podrzavaju, XOP i FMA4 (FMA4 kod plavih tek 2013 moguc)
powergating , eventualno bi jedno integer jezgro ukoliko je singlethread applikacija u pitanju imalo pristup svim resorsima clustera i turbo od 1GHz sto bi ovaj CPU cinilo u ST aplikacijama brahijalno performantnim.

Zamisli startujes spi1m na default naponu i default taktu od 3.5 GHz a aplikacija realno radi fabricki ocnuto na 4.5GHz :) :D
 
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reb0rn

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ovo vec lici realnije, veci IPC za 25% za modul prema K10.5 core...
 

blackmore1911

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@beli socket @ illidan

Pa zar je bitno,ionako ide CPU + Cooler na njega :D
A i ko jos gleda u kuciste ccc :p
@zadnja recenica, provokacija provokacija :rotf:
 

d0minat0r

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I performance number bude 28000 :rotf:
 

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Bulldozer vs. Phenom2

- 20% vise takta u odnosu na Thuban (Osnovni takt 3500MHz + 500MHz Turbo)
- 20% vise northbridge takta (2400MHz)
- redesign uncore sekcije i sa time 50% vise performansi
- oko 25% vise IPC'a (Modul vs. K10.5 Core)
- Sve SSE instrukcije koje i plavi podrzavaju, XOP i FMA4 (FMA4 kod plavih tek 2013 moguc)
powergating , eventualno bi jedno integer jezgro ukoliko je singlethread applikacija u pitanju imalo pristup svim resorsima clustera i turbo od 1GHz sto bi ovaj CPU cinilo u ST aplikacijama brahijalno performantnim.

Zamisli startujes spi1m na default naponu i default taktu od 3.5 GHz a aplikacija realno radi fabricki ocnuto na 4.5GHz :) :D
Stvari tu ovako stoje. AMD tvrdi da BD ima 50% vece perf. za 33% vise jezgara u odnosu na Thuban.
Sada pogledajmo Thuban u odnosu na Deneb.
Imamo 50% vise jezgara i 20% vece performanse u proseku. Prema Amdahalovom zakonu skaliranje nije idealno i u zavisnosti od programa ubrzanje tezi nekom konacnom broju.
Racunicom dolazimo do toga da BD ima oko 25-30% veci IPC od K10. Medjutim, FP performanse i po threadu su drasticno vece, rad sa kompleksnim strukturama podataka takodje, pa jos i turbo mod. Vrlo verovatno je da ce BD drati sve zivo i u single threadu.
 

drfedja

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drfedja

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Bulldozer ce bolje raditi sa 128-bitnim AVX vektorima nego sa 256-bitnim.

Attached is the patch to force gcc to generate 128-bit avx instructions for bdver1. We found that for
the current Bulldozer processors, AVX128 performs better than AVX256. For example, AVX128 is 3%
faster than AVX256 on CFP2006, and 2~3% faster than AVX256 on polyhedron.

As a result, we prefer gcc 4.6 to generate 128-bit avx instructions only (for bdver1).

The patch passed bootstrapping on x86_64-unknown-linux-gnu with "-O3 -g -march=bdver1" and
the necessary correctness and performance.
Razlog ovome:

IIRC from reading about bdver1 is that AVX256 was emulated by
splitting them up into two different AVX128 instructions which
obviously will be slower in some cases.
problem je u pristupu memoriji:

Yes, this should be the major reason that avx256 is slower. And HJ's patch that splitting unaligned 256-bit
load/store does not help.
Peak FLOPS ce biti jednak SB-ovom, ukoliko se koriste 256-bitne FMA4 instrukcije.
Najverovatnije da FMAC nece moci da spoji dve 128-bitne MUL i ADD operacije u dve 256-bitne, ali to ostaje da se vidi.

U optimization manualu za BD kazu da je na BD arhitekturi bolje koristiti 128-bitne AVX od 256-bitnih. U proseku daju bolje performanse.
 

drfedja

CPU Guru
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Moja konfiguracija
PC / Laptop Name:
Dell n5010, Intel Core i3 370M 2.4 GHz, 4 GB DDR3 1333
CPU & cooler:
Intel Core i7 4790K @ 4.5 GHz
Motherboard:
Biostar Hi-Fi Z97WE
RAM:
16GB Kingston HyperX Beast 2400
VGA & cooler:
Sapphire AMD Radeon R9-280X
Display:
Viewsonic VA2342 23" LED, LG 25"Ultrawide, Samsung VA2342 23"
HDD:
Samsung SSD850 Evo 250GB, Kingston 120GB V300 SSD, 2x1GB WD Caviar black
Sound:
Altec Lansing 5100E
Case:
Cooler Master 690-III
PSU:
Cooler Master G650M modular
Optical drives:
N/A
Mice & keyboard:
Keyboard/Mouse Cooler Master Storm
Internet:
Cable
OS & Browser:
Windows 10 Pro 64-bit
Other:
iPhone 6S 64GB
Interlagos is alive!

 

d0minat0r

PCAXE OC team
Učlanjen(a)
01.04.2009.
Poruka
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Moja konfiguracija
VGA & cooler:
Gainward 4850 512DDR3
Display:
Viewsonic 24"
HDD:
seagate 500Gt Single P
Case:
/
Optical drives:
Samsung 203D
Mice & keyboard:
A4tech oscar X 748K i microsoft ergo natural 4000
Internet:
ADSL 4Mbit
OS & Browser:
WIN7
znaci i buldozer Opetroni ce biti pakovani kao mangy coruse ili interlagos nije buldozer
sorry sto nisam pratio na casu
 
Vrh