[Beowulf] "NNSA’s first really big heterogeneous supercomputer"

Prentice Bisbal pbisbal at pppl.gov
Wed Oct 31 10:58:30 PDT 2018


> It also makes Sierra the NNSA’s first really big heterogeneous 
> supercomputer 

Does Roadrunner, the first computer to exceed 1 PFLOPS, not count any 
more? That was an NNSA system, and that had 3 (yes, 3!) different 
processors in it: The AMD Opteron CPU, of course, and then the 
PowerXCell 8i Processor consisted of  had a stripped down POWER 
processor core and Cell processors inside it. I read a publication from 
LANL on it's architecture years ago, and I believe to had to program for 
all 3 different processors to take advantage of it's architecture. (If 
soneone knows for sure, please correct me if I'm wrong.)   I'd say 
that's even more heterogeneous than what we are seeing today (CPU + GPU).


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