STREAM submission -- SGI UV 2000, 256-socket SSI

From: John Baron <>
Date: Tue Aug 14 2012 - 01:37:51 CDT

Hi John,

Please find attached STREAM results for a 256-socket Altix UV 2000
system with Sandy Bridge EP-4S processors.

System details:
SGI Altix UV 2000 (SSI)
256 Intel E5-4650 processors (8-core 2.7 GHz / 20 MB L3 cache)
Turbo mode disabled
16 TB main memory (2048x8GB dual-rank DDR3-1600 DIMMs)
SUSE Linux Enterprise Server 11 SP2 + SGI Performance Suite 1.4 for Linux
Transparent huge pages disabled in OS

Run details:
Intel compiler
Compilation flags: -O3 -ipo -xSSE4.2 -fno-alias -i8 -openmp
-extend_source -mcmodel=medium -i-dynamic -opt-streaming-stores never
Standard STREAM source code, modified to handle formatting requirements
of large arrays and to speed up array initialization.
The dplace tool was used to pin threads to cpus -- 4 threads per socket
except the first socket, which was left idle. 1020 threads total.

Thanks and regards,
John Baron
SGI Performance Engineering 651-683-3544

Received on Tue Aug 14 07:01:10 2012

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