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IBM to Build DoE's Next-Gen Coral Supercomputers

Data-centric local processors to surpass 100 petaflops
11/14/2014 11:55 AM EST
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rick merritt
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100 petaflops!
rick merritt   11/14/2014 12:12:24 PM
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Good report. Coral sounds like an effort at the next big leap from today's 38 PFlops Tainhe-2 in China to 100Pflops.

Pairing X86 CPUs and GPUs has been a big trend for at least a couple years now. Sounds like IBM has its own twist on that with Power8 and the proprietary Nvidia NVLink on Volta (which I believe is a 2.5-D chip with GPU and memory, right?)

I'm not sure what IBM means underneath the marketing term "data-centric" as far as the actual architecture, but we shall see.

krisi
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Re: 100 petaflops!
krisi   11/14/2014 12:22:16 PM
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big win for Nvidia...what is the power consumption of this powerful beast?

R_Colin_Johnson
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Re: 100 petaflops!
R_Colin_Johnson   11/14/2014 12:25:27 PM
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No detailed specs yet about power consumption, but IBM will undoubtably try for "green" plus with processors inside the storage units doing some of the heavy lifting, there'll be less power consumed by the Infiniband interconnect.

krisi
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Re: 100 petaflops!
krisi   11/14/2014 12:31:31 PM
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thank you Colin...I thought that Infiniband was actually pretty power hungry compared to other IO schemes...but I have not looked at this in a while so could you be wrong? anyone can give me mW/bit/Hz number? Kris

R_Colin_Johnson
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Re: 100 petaflops!
R_Colin_Johnson   11/14/2014 12:35:39 PM
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Yes, I believe the Volta architecture is planned to stack DRAM 3D style but put them on an interposer 2.5 D style alongside the GPU itself, achieving up to 1 terabyte per second bandwidth.

R_Colin_Johnson
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Re: 100 petaflops!
R_Colin_Johnson   11/14/2014 12:39:02 PM
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Not sure how much power saved with local processors avoiding use of Infiniband, but that was one of the points IBM was crowing about. Anybody out there know Infiniband power consumption for heavy loads?

krisi
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Re: 100 petaflops!
krisi   11/14/2014 3:29:44 PM
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I am sure this is a complex question that IBM and others carefully considered...the answer likely depends on the capacitive load, system architecture, process technology node etc....getting some insight would be great...having a coal plant to power a supercomputer would not be such a great accomplishment in the current green age

HS_SemiPro
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Reliabilty & fault tolerance is more important
HS_SemiPro   11/15/2014 12:45:43 AM
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DOE super computers run lot of Importtant function for US govt. These are not just lab computers.

Reliability & fault tolerance is more improtant, (unlike datacneters run by facebook , twitter etc.) , POwer  consumption is of secondary concern.

 

R_Colin_Johnson
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Re: Reliabilty & fault tolerance is more important
R_Colin_Johnson   11/15/2014 1:40:43 PM
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HS-SemiPro: "DoE superomputers run lots of important functions...power consumption is of secondary concern" Very good point. In fact, the DoE and IBM repeatedly referred to many of those important functions, such as shepherding our nuclear arsenal now that testing is prohibited.

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