STREAM "Top20" results

This table shows the "Top 20" shared-memory system results, from either the "standard" or "tuned" category. This is intended to be a "show-off" table (similar to the LINPACK NxN benchmark), so code modification (including assembly language coding) is acceptable.

Here "shared-memory" means that all memory is transparently accessible to all processors using standard load and store operations.

The table excludes:

cluster results
"MPP" systems, such as the IBM SP and Cray T3D/T3E

STREAM Memory Bandwidth --- John D. McCalpin, mccalpin@cs.virginia.edu
Revised to Wed, Mar 27, 2013  9:55:08 AM

All results are in MB/s --- 1 MB=10^6 B, *not* 2^20 B

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Sub. Date   Machine ID                      ncpus    COPY      SCALE        ADD      TRIAD
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2012.08.14  SGI_Altix_UV_2000               2048  6591669.0  6592082.0  7128484.0  7139690.0 data
2011.04.05  SGI_Altix_UV_1000               2048  5321074.0  5346667.0  5823380.0  5859367.0 data
2006.07.10  SGI_Altix_4700                  1024  3661963.0  3677482.0  4385585.0  4350166.0 data
2013.03.26  Fujitsu_SPARC_M10-4S            1024  3474998.0  3500800.0  3956102.0  4002703.0 data
2011.06.06  ScaleMP_Xeon_X6560_64B           768  1493963.0  2112630.0  2252598.0  2259709.0 data
2004.12.22  SGI_Altix_3700_Bx2               512   906388.0   870211.0  1055179.0  1119913.0 data
2003.11.13  SGI_Altix_3000                   512   854062.0   854338.0  1008594.0  1007828.0 data
2003.10.02  NEC_SX-7                          32   876174.7   865144.1   869179.2   872259.1 data
2008.04.07  IBM_Power_595                     64   679207.2   624707.8   777334.8   805804.6 data
1999.12.07  NEC_SX-5-16A                      16   607492.0   590390.0   607412.0   583069.0 data
2009.08.10  ScaleMP_XeonX5570_vSMP_16B       128   437571.0   431726.0   442722.0   445869.0 data
1997.06.10  NEC_SX-4                          32   434784.0   432886.0   437358.0   436954.0 data
2004.08.11  HP_AlphaServer_GS1280-1300        64   407351.0   400142.0   437010.0   431450.0 data
1996.11.21  Cray_T932_321024-3E               32   310721.0   302182.0   359841.0   359270.0 data
2009.06.03  ScaleMP_XeonX5570_vSMP_8B         64   276040.0   267553.0   268462.0   268722.0 data
2007.04.17  Fujitsu/Sun_Enterprise_M9000     128   224401.0   223113.0   224271.0   227059.0 data
2002.10.16  NEC_SX-6                           8   202627.2   192306.2   190231.3   213024.3 data
2006.07.23  IBM_System_p5_595                 64   186137.0   179639.0   200410.0   206243.0 data
2006.07.14  HP_Integrity_SuperDome_dc        128   154504.0   152999.0   169468.0   170833.0 data
2008.04.07  IBM_Power_575                     32   142708.2   142612.4   159010.7   162844.0 data
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