Hi,

I have recently installed a GPU (CAL ATI Radeon HD5x00 series (Cedar) (512MB) driver: 1.4.1546) and find I am taking about 9 hours per PPS Sieve. I am running 2 x Woodall on the CPU ( http://www.primegrid.com/show_host_detail.php?hostid=171718 )

Is this normal? or is something wrong in my settings? Most reported times seem to be in minutes rather than hours for a GPU.

Any advice would be appreciated.[/url]
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Member team AUSTRALIA
My lucky number is 9291*2^1085585+1

Time is shown as CPU time. So you will not see the GPU time currently. I believe it's being looked at but we've been crunching GPU for a couple years now and it's still not being shown.

When I was running my ATI 5870 cards along with the last Woodall challenge I was doing a WU in around 35 or so minutes per Proth WU (a lot ran longer than this).
So with 4 cards I could only muster an maximum RAC of under 500,000 (or there abouts).

Compared to the Nvidia cards it just wasn't in the same league so I put the cards on DNETC and Moo (just Moo now as DNETC has folded).

From the listed stats it seems that 2 Nvidia GTX570 cards can easily outdo this figure. They do WUs in under 15 minutes.

So I will await till I can get some Nvidia cards for Primegrid work. ATI cards fly at Moo so they will stay there with a fling at Milkyway now and then.

So in answer to your question, Is your GPU slow? Well probably not just not as suited to this project as some others. However taking many hours on the GPU sounds wrong, are you sure that your are running a GPU WU as the CPU work units take the 9 hour run time you mentioned.
Under your preferences you just tick the GPU box if you only want the GPU work, ticking the CPU box as well you will get both types.

Conan
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DaveB

The stedrr output is normal and showing reality time:
==============
<core_client_version>6.10.60</core_client_version>
<![CDATA[
<stderr_txt>
Sieve started: 58408512000000000 <= p < 58408518000000000
Thread 0 starting
Detected 32 multiprocessors (160 SPUs) on device 0.

Thread 0 completed
Sieve complete: 58408512000000000 <= p < 58408518000000000
count=155401791,sum=0xa7a10b0445914621
Elapsed time: 32991.39 sec. (1.43 init + 32989.96 sieve) at 181880 p/sec.
Processor time: 1084.49 sec. (1.40 init + 1083.08 sieve) at 5539935 p/sec.
Average processor utilization: 0.99 (init), 0.03 (sieve)
04:43:30 (4944): called boinc_finish

</stderr_txt>
]]>
================
It does however show a lower end 5xxx card ("Detected 32 multiprocessors (160 SPUs) on device 0."), and that together with the fact that the AMD application is on OpenCL, not any native ATI language means it will be markedly slower than the CUDA cards - fact of life with this application and current stage of development of OpenCL. Slower 5xxx + OpanCL is going to mean the timing is about right.

(Very much worth updating your 6.10.60 BOINC Client to the current 6.12.33 if multiple GPU on a card, and 6.12.34 if single GPU on a card. A lot of work was done between 6.10.XX and 6.12.XX on working with GPUs)

What is the actual card you are using ?