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[Appro]Next Generation Xtreme-X™ Supercomputer Selected by Lockheed Martin... - Page 3

post #21 of 50
Maybe they're doing an integer-heavy task.

Bulldozer is freaking fast at that (much faster than Intel's processors as for now).
   
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post #22 of 50
suddenly the migs have i5-2500k oced
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post #23 of 50
Do these have more features or anything aside from more cores than their desktop versions?
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post #24 of 50
Quote:
Originally Posted by cssorkinman View Post
Lately it seems like I'm living in Bizzaro world, people choosing AMD to do heavy math and choosing Intel to play games on. My how things have changed
something that 3dmark scores dont say;

Quote:
AMD's processors have great hardware multiplication, Core i7's multiplication has twice Athlon's latency, and the venerable Pentium 4 has really poor hardware multiplication. Basecase (a k a schoolbook) multiplication performance is direct function of hardware multiplication performance. And since the various Toom functions recurse into a large number of smaller basecase function invocations, their performance is also very linked. But FFT performs most of its work doing shifts and additions, and while these are also faster on Athlons, the other processors are closer behind.
http://gmplib.org/devel/
post #25 of 50
Quote:
Originally Posted by unity100 View Post
its because of opteron's multithreaded performance. dozer was good at it with 8 cores on desktop, go figure it with 16 cores.
Where's 2010 and his 8 core and 4 core BD Cinebench images?
post #26 of 50
The probably went with AMD due to the fact that they have FMA (fused multiply-add) along with AVX. FMA can greatly speed up FP workloads. Given that I am sure LM will write and compile there own internal code for simulations in the computer Bulldozer makes sense. Intel won't get a version of FMA until Haswell.
 
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post #27 of 50
Quote:
Originally Posted by b3machi7ke View Post
not being very well-versed in supercomputers, wonder why they selected to use bulldozer instead of something else...
Because when you recompile the programs to actually use the new software extensions and use a lot of cores, Bulldozer owns.

Not that most of OCN is well versed enough to realize this.
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post #28 of 50
Quote:
Originally Posted by b3machi7ke View Post
not being very well-versed in supercomputers, wonder why they selected to use bulldozer instead of something else...
Believe it or not, it's not because of the multi-threaded performance... a 10-core Xeon would probably be just as fast if not faster, if it weren't for one thing.

Instruction sets.

With XOP, CVT16, and FMA4 instructions, Bulldozer can be up to 20 times faster in single-threaded performance than Sandy Bridge. However, these are new instruction sets that Bulldozer introduced; therefore in the real world next to no applications take advantage of them. The thing is, people in the HPC crowd often compile their own apps anyway. Because of this, they're able to fully utilize the new instruction sets in all of their work from day 1. So Bulldozer is by far the best choice for them.
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post #29 of 50
All these threads about which company or nation has the most powerful super computer to flex their e-peen. I want to know what them guys in Area-51 are using with their secret alien technology.
post #30 of 50
Quote:
Originally Posted by b3machi7ke View Post
not being very well-versed in supercomputers, wonder why they selected to use bulldozer instead of something else...
?????

here:

Quote:
Originally Posted by Usario View Post
The thing is, people in the HPC crowd often compile their own apps anyway. Because of this, they're able to fully utilize the new instruction sets in all of their work from day 1. So Bulldozer is by far the best choice for them.
And this:


Quote:
Originally Posted by Brutuz View Post
Because when you recompile the programs to actually use the new software extensions and use a lot of cores, Bulldozer owns.

Not that most of OCN is well versed enough to realize this.
basically they do whatever is need to get the most of what they have/buy/build/whatever

and the rules/restrictions of the mortal human PC world doesnt exist

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