Dear John;
Would you please update the STREAM table on the anonymous ftp archive
with the data below for the CRAY T3D.
Bytes Bandwidth (MB/s) Clock
Machine /word Copy Scale Sum Triad MHz
--------------- ----- -------- -------- -------- -------- ------
CRAY T3D 256 PEs 8 66106.2 51583.5 33324.7 89105.0 150
CRAY T3D 128 PEs 8 32973.0 25793.4 16661.7 44665.0 150
CRAY T3D 64 PEs 8 16520.9 12896.0 8331.3 22338.4 150
CRAY T3D 32 PEs 8 8264.9 6448.3 4165.7 11167.5 150
The actual output from the T3D is listed below.
Also, I noticed in the sc spreadsheet that the C90 clock rate is listed
as 250 MHz. This is incorrect. The C90 clock rate is 240 MHz.
Thank you and Regards,
Charles Grassl
Cray Research, Inc.
Eagan, Minnesota
OUTPUT FROM CRAY T3D FOLLOWS:
-----------------------------
*** STREAM benchmark ***
Number of PEs: 32
Number of iterations: 5
Size of Arrays: 400000
Test #1 Failed = picalc=piexact
Apparently Single=Double Precision
Proceeding to Test #2
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 6.1997264331694169 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 Rate / PE
Assignment: 8264.9256 0.0248 0.0248 0.0250 258.2789
Scaling : 6448.3460 0.0319 0.0318 0.0320 201.5108
Summing : 4165.7771 0.0738 0.0737 0.0740 130.1805
SAXPYing :11167.5113 0.0276 0.0275 0.0278 348.9847
*** STREAM benchmark ***
Number of PEs: 64
Number of iterations: 5
Size of Arrays: 400000
Test #1 Failed = picalc=piexact
Apparently Single=Double Precision
Proceeding to Test #2
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 6.1920564294268843 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 Rate / PE
Assignment:16520.9172 0.0249 0.0248 0.0249 258.1393
Scaling :12896.0747 0.0318 0.0318 0.0319 201.5012
Summing : 8331.3155 0.0739 0.0737 0.0740 130.1768
SAXPYing :22338.4170 0.0277 0.0275 0.0278 349.0378
*** STREAM benchmark ***
Number of PEs: 128
Number of iterations: 5
Size of Arrays: 400000
Test #1 Failed = picalc=piexact
Apparently Single=Double Precision
Proceeding to Test #2
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 6.1994464331291965 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 Rate / PE
Assignment:32972.9965 0.0249 0.0248 0.0250 257.6015
Scaling :25793.4001 0.0318 0.0318 0.0319 201.5109
Summing :16661.7047 0.0739 0.0737 0.0739 130.1696
SAXPYing :44665.0442 0.0276 0.0275 0.0277 348.9457
*** STREAM benchmark ***
Number of PEs: 256
Number of iterations: 5
Size of Arrays: 400000
Test #1 Failed = picalc=piexact
Apparently Single=Double Precision
Proceeding to Test #2
--------------------------------------
Single precision appears to have 16 digits of accuracy
Assuming 8 bytes per default REAL word
--------------------------------------
Timing calibration ; time = 6.2008504338336934 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 Rate / PE
Assignment:66106.2260 0.0249 0.0248 0.0250 258.2274
Scaling :51583.5518 0.0318 0.0318 0.0320 201.4982
Summing :33324.7739 0.0739 0.0737 0.0740 130.1749
SAXPYing :89104.9894 0.0277 0.0276 0.0278 348.0664
This archive was generated by hypermail 2b29 : Tue Apr 18 2000 - 05:23:03 CDT