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[Anand] Westmere-EX:Intels flagship benchmarked

post #1 of 11
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Conclusion

Performance and RAS features took a giant leap forwared when Intel replaced the Xeon 7400 with the Xeon 7500. The memory subsystem went from a high latency, totally bandwidth choked loser (hardly 10GB/s for 24 cores) to a low latency and very high bandwidth champion (up to 70GB/s). The Xeon E7 builds further on that excellent platform, and adds up to 35% higher performance.

We now have a proven platform with excellent RAS features that needs slightly less power now while it provides a decent performance boost. That's excellent, but the Xeon E7 still has a few weakness. One weakness is the relatively high power consumption at idle load. Compared to the high-end Power 7 servers, this kind of power consumption is probably very reasonable. The Power 7 CPUs are in the 100 to 170W TDP range, while the Xeon E7s are in the 95 to 130W TDP range. A quad 3.3GHz Power 755 with (256GB RAM) server consumes 1650W according to IBM (slide 24), while our first measurements show that our 2.4GHz E7-4870 server will consume about 1300W in those circumstances.
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post #2 of 11
Nice! Was looking for this
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post #3 of 11
I just wished there faster clocked Westmere-EX Xeons... I had to buy some Gulftowns instead for 2.67+GHz clocks.
Edited by DuckieHo - 5/19/11 at 11:36am
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post #4 of 11
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Quote:
Originally Posted by DuckieHo View Post
I just wished there faster clocked Westmere-EX Xeons... I had to buy some Gulftowns instead for 2.67+GHz clocks.
higher clocks > cores for the application I take it?

Higher clock speeds would be very nice, or do what they did with the first quad cores, and offer the model with lesser cores and other wise identical, just with much higher clocks.
    
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post #5 of 11
Quote:
Originally Posted by trueg50 View Post
higher clocks > cores for the application I take it?

Higher clock speeds would be very nice, or do what they did with the first quad cores, and offer the model with lesser cores and other wise identical, just with much higher clocks.
Lightly threaded, FP intensive application. Our mathematicians don't know how to program well, optimize DB access, trap errors, nor multithread.



Intel 32nm Xeon selection has a gap...
4-core Gulftown = up to 3.6GHz
4-core Sandy Bridge = up to 3.5GHz
6-core Gulftown = up to 3.47GHz
6-core Westmere-EX = up to 1.87GHz
8-core Westmere-EX = up to 2.67GHz
10-core Westmere-EX = up to 2.4GHz
Edited by DuckieHo - 5/19/11 at 12:27pm
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post #6 of 11
Memory throughput seems to have gotten fixed up well.
 
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post #7 of 11
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Quote:
Originally Posted by DuckieHo View Post
Lightly threaded, FP intensive application. Our mathematicians don't know how to program well, optimize DB access, trap errors, nor multithread.



Intel 32nm Xeon selection has a gap...
4-core Gulftown = up to 3.6GHz
4-core Sandy Bridge = up to 3.5GHz
6-core Gulftown = up to 3.47GHz
6-core Westmere-EX = up to 1.87GHz

8-core Westmere-EX = up to 2.67GHz
10-core Westmere-EX = up to 2.4GHz
Wow, I'll say! I'd have expected them to have the 6 core Westmere at a significantly higher clock then that, which would make it the perfect chip for applications like yours. Also, with AMD going the "many many" core route, Intel has a doubly big hole.
    
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post #8 of 11
Quote:
Originally Posted by trueg50 View Post
Wow, I'll say! I'd have expected them to have the 6 core Westmere at a significantly higher clock then that, which would make it the perfect chip for applications like yours. Also, with AMD going the "many many" core route, Intel has a doubly big hole.
It's a strange gap that there isn't a Westmere-EX in the 3GHz+ range for even hex/octo cores.

I expect an Ivy Bridge-EX 6/8 core in the 3GHz+ range in the future though.
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post #9 of 11
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
It's a strange gap that there isn't a Westmere-EX in the 3GHz+ range for even hex/octo cores.

I expect an Ivy Bridge-EX 6/8 core in the 3GHz+ range in the future though.
Most certainly, especially if they implement 3D Transistors, and it works well, I would expect them to have enough of a power envelope to work with that they can kick the frequencies way up. Though that is assuming the frequency can scale as Intel chips traditionally have been able to.
    
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post #10 of 11
Quote:
Originally Posted by trueg50 View Post
Wow, I'll say! I'd have expected them to have the 6 core Westmere at a significantly higher clock then that, which would make it the perfect chip for applications like yours. Also, with AMD going the "many many" core route, Intel has a doubly big hole.
It actually looks like they wanted to do their own sort of TWKR chip, only for mass production.
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