Zero time error

[k6xt]

I'm getting a few of these, don't understand why. Can anyone help?

http://setiathome.berkeley.edu/result.php?resultid=1998436487

Tnx Art

[Jason G]

Looks like you may be running out of physical RAM Art.  1Gig installed only right?  I'd suggest reduce the number of cores running apps or add more physical RAM.

Jason

[k6xt]

Looks like you may be running out of physical RAM Art.  1Gig installed only right?  I'd suggest reduce the number of cores running apps or add more physical RAM.

Jason

Jason you are correct that PC has 1GB. Thanks for the hint! By way of education, what in the task report or STDERR OUT led you to that conclusion?
Regards
Art

[Jason G]

Jason you are correct that PC has 1GB. Thanks for the hint! By way of education, what in the task report or STDERR OUT led you to that conclusion?
Regards
Art

Going from memory now, as it's a day later, I looked up the error codes on the reported task on Microsoft's website & one of them was 'out of resources'.  I then looked at your host, recognised it as a quad core with nVidia GPU.  Newer Cuda drivers use (a lot) more system area than the old ones for shared video memory, and Windows 7 would only have about 512meg max kernel area, which would exhaust pretty quickly under those conditions.  Kernel area isn't pageable, and 512meg physical left as pageable isn't a lot that can stay resident for 4xCPU apps + optionally a GPU app either (Plus everything else that might be running).   

[Edit:] here's the example of system resources reserved for my 480 (from nVidia control panel system information):

[Display]
Operating System:   Windows 7 Professional, 64-bit (Service Pack 1)
DirectX version:   11.0 
GPU processor:      GeForce GTX 480
Driver version:      266.58
DirectX support:   11
CUDA Cores:      480 
Core clock:      820 MHz 
Shader clock:      1640 MHz
Memory clock:      2088 MHz (4176 MHz data rate) 
Memory interface:   384-bit 
Total available graphics memory:   3322 MB
Dedicated video memory:   1536 MB GDDR5
System video memory:   0 MB
Shared system memory:   1786 MB
Video BIOS version:   70.00.1A.00.80
IRQ:         16
Bus:         PCI Express x16

That's what I would call a 'Decent chunk' out of my 4Gig installed physical RAM. What that is used for is pretty involved, but one of the fundamental WDDM driver model extensions that allows the driver to recover without rebooting, as opposed to hard lock or old-school BSOD

Jason

[k6xt]

Jason you are correct that PC has 1GB. Thanks for the hint! By way of education, what in the task report or STDERR OUT led you to that conclusion?
Regards
Art

Going from memory now, as it's a day later, I looked up the error codes on the reported task on Microsoft's website & one of them was 'out of resources'.  I then looked at your host, recognised it as a quad core with nVidia GPU.  Newer Cuda drivers use (a lot) more system area than the old ones for shared video memory, and Windows 7 would only have about 512meg max kernel area, which would exhaust pretty quickly under those conditions.  Kernel area isn't pageable, and 512meg physical left as pageable isn't a lot that can stay resident for 4xCPU apps + optionally a GPU app either (Plus everything else that might be running).   

Snip

That's what I would call a 'Decent chunk' out of my 4Gig installed physical RAM. What that is used for is pretty involved, but one of the fundamental WDDM driver model extensions that allows the driver to recover without rebooting, as opposed to hard lock or old-school BSOD

Jason

OK Thanks. I had a couple GB of the right stuff in my junk box now running in that PC. Available RAM shown by Task Mgr jumped from ~250MB w/4 tasks running to 1,300MB. Will be watching for any more errors. There isn't much else running except W7 64 bit hotel loads and an AV program. The offending PC is devoted to BOINC.

Regards and thanks again
Art

[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 aren´t 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]

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

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