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Zero time error

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k6xt:
New question. I just had an astropulse task require 14hr42min on a ATI GPU. Is this normal for some Astropulse tasks?

I'll edit to add the task soon as its in pending.

Thanks Art

Edit: Here's the task:
http://setiathome.berkeley.edu/result.php?resultid=2000643559

Reading the boards regarding unrolling etc. is a new wrinkle to me. perhaps I can improve on this result. Seems like only half of the GPU memory was used for this task. And I see where some are running more than one task, simultaneously. I need some help with that. The Phenom mobo, CPU and GPU are all new, link to PC:
http://setiathome.berkeley.edu/result.php?resultid=2000643559

Mike:
Give us more info.
Which card exactly ?
CPU usage looks good using SDK 2.4.
But 11.6. drivers arenīt the fastest.
I would try 11.3. they are faster.

k6xt:
Sorry my "link to PC" was wrong. Here it is:
http://setiathome.berkeley.edu/show_host_detail.php?hostid=5457867

The card is a HIS 4850.

I'm wondering if nearly 15 hrs is grossly wrong, not just a little bit.

Regards
Art

Claggy:

--- Quote from: k6xt on 18 Jul 2011, 11:04:04 pm ---Sorry my "link to PC" was wrong. Here it is:
http://setiathome.berkeley.edu/show_host_detail.php?hostid=5457867

The card is a HIS 4850.

I'm wondering if nearly 15 hrs is grossly wrong, not just a little bit.

Regards
Art

--- End quote ---
There's more Blanking on that task than your other completed task (Blanking is done on the CPU and the data has to be transfered across the PCIe bus before and after Blanking)

You can try increasing the unrol value from 6 to 8 or 10 (your 4850 has 10 compute units) which should better utilise the GPU, but that won't prevent the slowdowns on heavy Blanked tasks,

and you might want to try setting the following to 'no' to see if makes much of a difference (I can't tell if you have 'Suspend work while computer is in use?' set too):

Suspend GPU work while computer is in use?
Enforced by version 6.6.21+

Claggy

Mike:
I have checked Sten Arnes host at main.
He is running 4850 as well but 1 GB version.

Try unroll 10

Thread_Block 4096 Thread_Block_Fetch 4096

Mike

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