Fwd: STREAM submission -- SGI Altix UV 1000, 256-socket SSI

From: John McCalpin <john_at_mccalpin.com>
Date: Tue, 5 Apr 2011 11:52:53 -0500

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From: John Baron <jbaron_at_sgi.com<mailto:jbaron_at_sgi.com>>
Date: April 1, 2011 3:29:46 PM CDT
To: <mailto:john_at_mccalpin.com> john_at_mccalpin.com<mailto:john_at_mccalpin.com>
Cc: <mailto:mccalpin_at_cs.virginia.edu> mccalpin_at_cs.virginia.edu<mailto:mccalpin_at_cs.virginia.edu>
Subject: STREAM submission -- SGI Altix UV 1000, 256-socket SSI

Hi John,

Please find attached STREAM results for a 256-socket Altix UV 1000 system with Westmere-EX processors.

System details:
SGI Altix UV 1000 (SSI)
192 Intel E7-4870 processors (10-core 2.40 GHz / 30 MB L3 cache)
64 Intel E7-8837 processors (8-core 2.66 GHz / 24 MB L3 cache)
8 TB main memory (2048x4GB quad-rank DDR3-1066 DIMMs)
SUSE Linux Enterprise Server 11 SP1 + SGI Performance Suite 1.1 for Linux

The max supported SSI size is 256 sockets / 2048 cores, so only 8 cores per E7-4870 socket were enabled.

Run details:
Intel compiler
Compilation flags: -O3 -ipo -xSSE4.2 -fno-alias -i8 -openmp -extend_source -mcmodel=medium -i-dynamic -opt-streaming-stores always -nolib-inline
Standard STREAM source code, modified to handle formatting requirements
of large arrays.
The dplace tool was used to pin threads to cpus -- 8 threads per socket except the first socket, which had 7 threads. 2047 threads total.

Please hold these results until April 5.

Thanks and regards,

Received on Tue Apr 05 2011 - 11:52:53 CDT

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