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Jim Kress
jimkress_35@kressworks.com

Jim

On Wed Jan 5 '11 7:52pm, Jeff Johns wrote
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>Many thanks to Alex Granovsky's help I am now sucessfully running Firefly version 8.0.0, build number 5958 on an Asus GTX460.

>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    
>----------------------------------------------------------------

>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    

>-----------------------------------------------------------------------

>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.
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