John,
Charles Grassl asked that I send you the output from the STREAM bench-
mark I recently ran on a CRAY CS6400 system here in Eagan.
The system used is a 6432-4096-2, 32 processors and 4 GBytes of memory.
The operating system is the Cray Research enhanced version of Solaris
2.3. The output from a uname -a command is as follows;
SunOS tornado 5.3 Generic_640003-07 sun4d sparc
The source code was compiled using the SunPro SPARCompiler for FORTRAN
version SC3.0.1 13 Jul 1994 with the following options;
-xlibmopt -fast -O4 -autopar -reduction -stackvar -loopinfo
Below is the log file from the run with added echo statements to reflect
the number of CPUs used as well as the value of "N"
Please feel free to contact me with any questions, comments or concerns.
Best regards,
Kim Schumann
CS6400 Sales Support email : kls@ferrari.cray.com
Cray Research, Inc. phone : (612) 683-7262
Cray Research Park fax : (612) 683-5599
655F Lone Oak Drive
Eagan, MN. 55121
*** CPUS = 1 MEMORY = 64 MILLION ***
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 4158.2269000006 hundredths of a second
Increase the size of the arrays if this is <30
and your clock precision is =<1/100 second
---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 51.0661 20.0866 20.0524 20.1661
Scaling : 49.8824 20.5491 20.5283 20.5787
Summing : 49.9678 30.7563 30.7398 30.7790
SAXPYing : 50.2040 30.6155 30.5952 30.6453
*** CPUS = 4 MEMORY = 64 MILLION ***
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 1106.7689999996 hundredths of a second
Increase the size of the arrays if this is <30
and your clock precision is =<1/100 second
---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 188.8501 5.4674 5.4223 5.5523
Scaling : 184.3090 5.5942 5.5559 5.6635
Summing : 188.4362 8.1883 8.1513 8.2298
SAXPYing : 188.8257 8.1672 8.1345 8.2265
*** CPUS = 8 MEMORY = 64 MILLION ***
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 601.64710000099 hundredths of a second
Increase the size of the arrays if this is <30
and your clock precision is =<1/100 second
---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 347.9060 2.9776 2.9433 3.0683
Scaling : 342.3733 3.0285 2.9909 3.0957
Summing : 341.4058 4.5373 4.4990 4.6153
SAXPYing : 342.6166 4.5264 4.4831 4.5948
*** CPUS = 16 MEMORY = 64 MILLION ***
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 349.39420000010 hundredths of a second
Increase the size of the arrays if this is <30
and your clock precision is =<1/100 second
---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 611.4776 1.7063 1.6746 1.7738
Scaling : 600.9982 1.7321 1.7038 1.7849
Summing : 595.9612 2.6186 2.5773 2.6917
SAXPYing : 594.5830 2.6120 2.5833 2.6821
*** CPUS = 24 MEMORY = 64 MILLION ***
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 287.62680000073 hundredths of a second
Increase the size of the arrays if this is <30
and your clock precision is =<1/100 second
---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 761.9172 1.3640 1.3440 1.4456
Scaling : 753.6843 1.3733 1.3587 1.4028
Summing : 775.5429 1.9965 1.9805 2.0151
SAXPYing : 774.4984 2.0002 1.9832 2.0356
*** CPUS = 32 MEMORY = 64 MILLION ***
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 282.07970000076 hundredths of a second
Increase the size of the arrays if this is <30
and your clock precision is =<1/100 second
---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 824.0779 1.3561 1.2426 1.9164
Scaling : 819.6151 1.3587 1.2494 1.7986
Summing : 885.0475 1.9392 1.7355 2.7709
SAXPYing : 882.6004 1.9552 1.7403 2.9712
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