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Profile rebirther
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Message 1037 - Posted: 13 Sep 2009, 16:22:47 UTC

I checked some hosts and a GTX260 need around 600-800s to finished one WU, My time on every WU is around 1800s on the same card on Win7 Ultimate 64bit, running now with 6.6.37, before 6.10.4 without any improvement, driver is the newest 190.xx. The gpu is at 67°C with 40% fanspeed (very low) so the card has not the full performance.

Any hints?

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Message 1038 - Posted: 13 Sep 2009, 16:37:53 UTC - in response to Message 1037.
Last modified: 13 Sep 2009, 16:39:28 UTC

I checked some hosts and a GTX260 need around 600-800s to finished one WU, My time on every WU is around 1800s on the same card on Win7 Ultimate 64bit, running now with 6.6.37, before 6.10.4 without any improvement, driver is the newest 190.xx. The gpu is at 67°C with 40% fanspeed (very low) so the card has not the full performance.

Any hints?


Uhmmmm... Are you running other projects in that machine...?

Some projects can slow down your card performance... I'm using a GTX260 (OCed) in a Q6600 (XP32)... 770 seconds per WU, but if I crunch AQUA or Milkyway in the CPU, the wallclock time is increased...
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Message 1039 - Posted: 13 Sep 2009, 16:43:34 UTC - in response to Message 1038.


Uhmmmm... Are you running other projects in that machine...?

Some projects can slow down your card performance... I'm using a GTX260 (OCed) in a Q6600 (XP32)... 770 seconds per WU, but if I crunch AQUA or Milkyway in the CPU, the wallclock time is increased...


Only 4 tasks on WCG too but this project need less power.

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Message 1040 - Posted: 13 Sep 2009, 17:02:15 UTC - in response to Message 1039.


Uhmmmm... Are you running other projects in that machine...?

Some projects can slow down your card performance... I'm using a GTX260 (OCed) in a Q6600 (XP32)... 770 seconds per WU, but if I crunch AQUA or Milkyway in the CPU, the wallclock time is increased...


Only 4 tasks on WCG too but this project need less power.



It is not the power, it is the time slicing to access the CPU component for the WU. Hence what Logan was saying. Depending on what projects you are running alongside it.


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Message 1041 - Posted: 13 Sep 2009, 17:15:15 UTC - in response to Message 1040.



It is not the power, it is the time slicing to access the CPU component for the WU. Hence what Logan was saying. Depending on what projects you are running alongside it.



I have the same constellation as in 32bit XP but in all GPU projects the performance is not acceptable.

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Message 1045 - Posted: 14 Sep 2009, 9:30:58 UTC - in response to Message 1041.



It is not the power, it is the time slicing to access the CPU component for the WU. Hence what Logan was saying. Depending on what projects you are running alongside it.



I have the same constellation as in 32bit XP but in all GPU projects the performance is not acceptable.


I think to figure this out it is easiest if you stop all other projects and see what happens. If you time stays the same there is another problem, if it comes up to normal speed the problem is the interaction of the other projects. Lost of different projects means lots of different tweaks to Boinc. Unfortunately Boinc is not a hands off program, each and every project tweaks it to do their own units the best, while we users have to try and make it work for our own choices of multiple projects.

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Message 1058 - Posted: 14 Sep 2009, 22:39:57 UTC

The code for v1.10 doesn't run 100% on the CUDA device. It calculates the steps for a grid of numbers on the CUDA device, but the sum and max of the steps is being done on the CPU. The plan is for v2.00 to do all calculations on the GPU which should put a lot more stress on the GPU.

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Message 1072 - Posted: 15 Sep 2009, 13:44:35 UTC - in response to Message 1058.

The code for v1.10 doesn't run 100% on the CUDA device. It calculates the steps for a grid of numbers on the CUDA device, but the sum and max of the steps is being done on the CPU. The plan is for v2.00 to do all calculations on the GPU which should put a lot more stress on the GPU.


Yes, I see, I run now 3+1 and the time is 1/2 for a WU.


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