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Message boards : Number crunching : ATI GPUs

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Message 10910 - Posted: 29 Jun 2009 | 2:15:00 UTC

I have 2 computers qx9650 with a 295 doing GPUGRD
i7 920 with a ATI 4870x2 doing MW
I avg 20000 a day with GPUGRD
I am now avg 50000 a day with Milkyway
I was only doing 4000 a day till I started using the new Gipsel 0.19f code with the ATI card

I HAVE READ a lot about the diffences between the cards but is it not time someone though about doing some pararall programming.
The MW jobs were taking 1 to 2 hrs now are taking 2 to 3 mins
I hear a lot about the No of shaders per card but if you read below perhaps ATI ?? cards may have a case.

<core_client_version>6.6.36</core_client_version>
<![CDATA[
<stderr_txt>
Running Milkyway@home ATI GPU application version 0.19f by Gipsel
CPU: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz (8 cores/threads) 3.39998 GHz (392ms)

CAL Runtime: 1.4.317
Found 2 CAL devices

Device 0: ATI Radeon HD 4800 (RV770) 1024 MB local RAM (remote 2047 MB cached + 2047 MB uncached)
GPU core clock: 750 MHz, memory clock: 900 MHz
800 shader units organized in 10 SIMDs with 16 VLIW units (5-issue), wavefront size 64 threads
supporting double precision

Device 1: ATI Radeon HD 4800 (RV770) 1024 MB local RAM (remote 2047 MB cached + 2047 MB uncached)
GPU core clock: 750 MHz, memory clock: 900 MHz
800 shader units organized in 10 SIMDs with 16 VLIW units (5-issue), wavefront size 64 threads
supporting double precision

0 WUs already running on GPU 0
0 WUs already running on GPU 1
Starting WU on GPU 0

main integral, 320 iterations
predicted runtime per iteration is 191 ms (33.3333 ms are allowed), dividing each iteration in 6 parts
borders of the domains at 0 272 536 800 1072 1336 1600
Calculated about 9.89542e+012 floatingpoint ops on GPU, 1.23583e+008 on FPU. Approximate GPU time 106.189 seconds.

probability calculation (stars)
Calculated about 3.05993e+009 floatingpoint ops on FPU.

WU completed.
CPU time: 4.61763 seconds, GPU time: 106.189 seconds, wall clock time: 323.25 seconds, CPU frequency: 3.4 GHz




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Profile Stefan Ledwina
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Message 10918 - Posted: 29 Jun 2009 | 19:27:34 UTC - in response to Message 10910.

http://www.gpugrid.net/forum_thread.php?id=277&nowrap=true#10464
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Message boards : Number crunching : ATI GPUs

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