Jeff Johns
jjeff@kku.ac.th
Running the standard MP4 test I got:
$system mwords=140 mklnp=4 np=3 freshf=0 memf=1 flush=0 async=0 $end
$smp csmtx=1 cuda=.t. tpool=64 $end
$cuda cuflgs=1 events=1 nocpu=1 $end
$cuda cumask=1 cuaff=5 $end
1 GTX460 GPU’s (not overclocked)
Intel Core2/ Win32 Firefly version running under Windows NT (Jeff’s)
Running on Intel CPU: Brand ID 0, Family 6, Model 23, Stepping 10
CPU Brand String : Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz
CPU Features : CMOV, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, MWAIT, EM64T
Data cache size : L1 32 KB, L2 2048 KB, L3 0 KB
CPU frequency is : 3281.570 MHz
max # of cores/package : 4
max # of threads/package : 4
max cache sharing level : 2
0 GeForce GTX 460 Yes Yes Yes No Yes
......END OF NBO ANALYSIS......
CPU TIME: STEP = 0.00 , TOTAL = 2386.6 SECONDS ( 39.8 MIN)
WALL CLOCK TIME: STEP = 0.04 , TOTAL = 2169.1 SECONDS ( 36.2 MIN)
CPU UTILIZATION: STEP = 0.00%, TOTAL = 110.03%
I/O STATISTICS:
DATA READ TOTAL = 1702.750 MB, DATA WRITTEN TOTAL = 914.661 MB
125174229 WORDS OF DYNAMIC MEMORY USED
EXECUTION OF FIREFLY TERMINATED NORMALLY 9:54:00 30-DEC-2010
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CPU only 4 cores
Intel Core2/ Win32 Firefly version running under Windows NT (Jeff’s)
Running on Intel CPU: Brand ID 0, Family 6, Model 23, Stepping 10
CPU Brand String : Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz
CPU Features : CMOV, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, MWAIT, EM64T
Data cache size : L1 32 KB, L2 2048 KB, L3 0 KB
CPU frequency is : 3281.570 MHz
max # of cores/package : 4
max # of threads/package : 4
max cache sharing level : 2
......END OF NBO ANALYSIS......
CPU TIME: STEP = 0.00 , TOTAL = 4680.5 SECONDS ( 78.0 MIN)
WALL CLOCK TIME: STEP = 0.00 , TOTAL = 4697.1 SECONDS ( 78.3 MIN)
CPU UTILIZATION: STEP = 0.00%, TOTAL = 99.65%
I/O STATISTICS:
DATA READ TOTAL = 91005.658 MB, DATA WRITTEN TOTAL = 999.917 MB
18950703 WORDS OF DYNAMIC MEMORY USED
EXECUTION OF FIREFLY TERMINATED NORMALLY 11:42:14 30-DEC-2010
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Previous data reported on this forum:
2 GTX280 GPU’s
Core i7 / Win32 Intel(R) Core(TM) i7 CPU 940 @ 2.93GHz
CPU TIME: STEP = 0.00 , TOTAL = 1818.2 SECONDS ( 30.3 MIN)
WALL CLOCK TIME: STEP = 0.00 , TOTAL = 1526.3 SECONDS ( 25.4 MIN)
As above, no GPU
CPU TIME: STEP = 0.00 , TOTAL = 4284.7 SECONDS ( 71.4 MIN)
WALL CLOCK TIME: STEP = 0.00 , TOTAL = 4291.8 SECONDS ( 71.5 MIN)
The GTX 460 ran straight out of the box (less than 10 minutes to install incl software), no
installation hassles, runs cool (45-50 C), and is readily available. The GTX460 provides about a factor of two performance over Quad CPU Q8400 @3.38GHz, and about the same as two GTX280's. You can overclock the 460 about 25-30% as well if desired. The GTX460 showed much better performance over CPU only for OpenMM/Gromacs (5 to 100 times, increasing with increasing no. of atoms) and about 50% of the performance of the GTX480/same as a Tesla1070 running HOOMD-Blue (as expected). It might be a good alternative for those not wanting to invest in the cost of a Tesla.
[ This message was edited on Wed Jan 5 '11 at 7:52pm by the author ]