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Message boards : Graphics cards (GPUs) : new beta application 6.46 cuda4.0 and cuda42 for windows out

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Message 25621 - Posted: 11 Jun 2012 | 13:33:29 UTC

We have uploaded the new beta application for windows.
Please report any problem here.

gdf

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Message 25622 - Posted: 11 Jun 2012 | 14:49:12 UTC

2 gtx 680 W7

BOINC 7.0.25, Driver= 301.42

Downloaded 4 CUDA 4.0 tasks=failed

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Message 25624 - Posted: 11 Jun 2012 | 15:30:09 UTC
Last modified: 11 Jun 2012 | 16:08:50 UTC

Win 7 64bit/ XP sp3, GTX 670, NV driver 301.42, Boinc Mgr. 7.0.25/27/28


GPUgrid keeps to send WUs of ACEMD beta version 6.46(cuda42 OK), and (cuda40 compu. error) to the said computers.


EDIT -- It seems on my computers that Fermi cards work OK with cuda40 and cuda42, but Kelper cards work OK only with cuda42.
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Message 25625 - Posted: 11 Jun 2012 | 15:58:45 UTC - in response to Message 25621.
Last modified: 11 Jun 2012 | 16:14:53 UTC

I've received a couple of Cuda4.0 and Cuda4.2 beta workunints, and they are working fine.
(WinXP 32 bit, GTX 480 @ 800MHz, driver v301.42)
(WinXP 64 bit, GTX 590 @ 725MHz, driver v302.59)
(WinXP 64 bit, GTX 480 @ 800MHz, driver v301.42)
(WinXP 64 bit, GTX 480 @ 800MHz, driver v301.24)
However, the Cuda 4.2 version is much faster than the Cuda 4.0.

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Message 25626 - Posted: 11 Jun 2012 | 16:30:59 UTC - in response to Message 25625.
Last modified: 11 Jun 2012 | 16:31:24 UTC

I cannot find a single reason while the server gives both applications out to the same computer.

The decision on which application to give is based on driver version and CUDA runtime. So, this should not have changed between one request and another.

Also the difference between cuda4.0 and cuda4.2 seems too much.

gdf

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Message 25627 - Posted: 11 Jun 2012 | 16:35:45 UTC - in response to Message 25626.

I have done some changes on the server side to see if the application delivery improves.

gdf

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Message 25628 - Posted: 11 Jun 2012 | 16:50:43 UTC - in response to Message 25627.
Last modified: 11 Jun 2012 | 16:56:18 UTC

I'm still receiving cuda4.0 tasks.
Task 5484191
Task 5484657

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Message 25629 - Posted: 11 Jun 2012 | 16:58:35 UTC - in response to Message 25624.

Win 7 64bit/ XP sp3, GTX 670, NV driver 301.42, Boinc Mgr. 7.0.25/27/28


GPUgrid keeps to send WUs of ACEMD beta version 6.46(cuda42 OK), and (cuda40 compu. error) to the said computers.


EDIT -- It seems on my computers that Fermi cards work OK with cuda40 and cuda42, but Kelper cards work OK only with cuda42.



Only cuda42 application are received for GTX470+GTX670 and GTX670+GTX580 computers and OK

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Message 25630 - Posted: 11 Jun 2012 | 16:59:16 UTC
Last modified: 11 Jun 2012 | 17:00:43 UTC

Cuda40 &42 evenly split. XP64,GTX580, 7.0.28, 301.42. All completing OK.

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Message 25631 - Posted: 11 Jun 2012 | 17:02:07 UTC

Win7 64bit, GTX 680, Driver 301.42, Boinc 7.0.28
(http://www.gpugrid.net/show_host_detail.php?hostid=125758)

Got 15 WUs (cuda42). All worked fine.

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Message 25632 - Posted: 11 Jun 2012 | 17:17:06 UTC - in response to Message 25631.
Last modified: 11 Jun 2012 | 17:18:46 UTC

There are two strange things about the cuda4.2 beta client v6.46:
1. My GTX 580 @ 850MHz seems to be faster than your GTX 680. (67 sec vs. 70-71 sec)
2. The beta client seems to be ignoring the swan_sync=0 setting on my hosts.

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Message 25633 - Posted: 11 Jun 2012 | 17:33:17 UTC

Cuda 40 = GPU load ~97% CPU load 8% No screen lag, 122secs
Cuda 42 = GPU load ~95% CPU load 12.5% No screen lag, 70 secs

XP64,GTX580, 7.0.28, 301.42.

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Message 25634 - Posted: 11 Jun 2012 | 17:45:44 UTC
Last modified: 11 Jun 2012 | 17:51:38 UTC

Just had two cuda40 tasks error. One at 20secs, other at 41secs.
SWAN : FATAL : Cuda driver error 700 in file 'swanlibnv2.cpp' in line 1574.
Assertion failed: a, file swanlibnv2.cpp, line 59

Swan_sync is not enabled on this machine.

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Message 25635 - Posted: 11 Jun 2012 | 17:52:05 UTC
Last modified: 11 Jun 2012 | 17:54:54 UTC

Both 680's now receiving 4.2 constantly. So far so good. Runtimes of roughly 60 sec on each one with a 3820@ 4.3.

Looking good guys. Also, no screen lag apparent using W7 with GPU utilization at 91%.

This is with WCG suspended currently. Will be resuming it and see how things go.

EDIT: I've noticed a bug. Whenever one task finishes. The other one TIME freezes. However, the GPU keeps working, and once it un-"freezes", the percent jumps to where it should be. But, the time remains where it last was. This will cause runtimes to vary WIDELY.

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Message 25636 - Posted: 11 Jun 2012 | 18:46:10 UTC - in response to Message 25635.


EDIT: I've noticed a bug. Whenever one task finishes. The other one TIME freezes. However, the GPU keeps working, and once it un-"freezes", the percent jumps to where it should be. But, the time remains where it last was. This will cause runtimes to vary WIDELY.


Probably a BOINC client bug.


2. The beta client seems to be ignoring the swan_sync=0 setting on my hosts.


The new clients don't honour SWAN_SYNC right now. They automatically set blocking sync (low CPU load).

MJH

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Message 25639 - Posted: 11 Jun 2012 | 19:42:14 UTC - in response to Message 25636.
Last modified: 11 Jun 2012 | 19:43:03 UTC

2. The beta client seems to be ignoring the swan_sync=0 setting on my hosts.

The new clients don't honour SWAN_SYNC right now. They automatically set blocking sync (low CPU load).

The swan_sync=0 seems to be working with the 6.46 beta client on this host.

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Message 25640 - Posted: 11 Jun 2012 | 20:26:14 UTC - in response to Message 25639.

Seems there is not lot difference between running a GTX 480 or a GTX 680 on cuda 4.2 , at this time, i think. Will that be improved in future ?

I do not want to rush you :)

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Message 25641 - Posted: 11 Jun 2012 | 20:54:02 UTC

Right now it looks like RZs 480 on xp was around 6-7 seconds slower than a 680 on W7. Probably 10 seconds difference if the 680 was on xp. That's pretty big. No? Especially considering the power consumption, which is my favorite factor. :)

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Message 25642 - Posted: 11 Jun 2012 | 22:31:59 UTC - in response to Message 25635.



Both 680's now receiving 4.2 constantly. So far so good. Runtimes of roughly 60 sec on each one with a 3820@ 4.3.


Would you reveal your computers so that I can see your WUs, please?

MJH

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Message 25644 - Posted: 11 Jun 2012 | 22:38:12 UTC
Last modified: 11 Jun 2012 | 22:41:12 UTC

Been looking for that tick for awhile now and still can't find it....

Here's a link to my page though.?

http://www.gpugrid.net/results.php?userid=86780

EDIT: After a bumpy start had about 60 in a row that were all 4.2

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Message 25645 - Posted: 11 Jun 2012 | 22:40:55 UTC - in response to Message 25640.



Seems there is not lot difference between running a GTX 480 or a GTX 680 on cuda 4.2 , at this time, i think. Will that be improved in future ?


The test WU is a very small system and the additional overhead of Win 7 is probably enough to hide the performance benefit. On a nice Linux system, however, the 4.2 app on 680 should have ~1.6x over a 480, even on these WUs.

MJH

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Message 25646 - Posted: 12 Jun 2012 | 0:43:25 UTC - in response to Message 25644.

Been looking for that tick for awhile now and still can't find it....

Here's a link to my page though.?

http://www.gpugrid.net/results.php?userid=86780

EDIT: After a bumpy start had about 60 in a row that were all 4.2

No Access :(

Go To
GPUGRID preferences

Change the fifth option down to,
Should GPUGRID show your computers on its web site? yes
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Message 25647 - Posted: 12 Jun 2012 | 0:50:12 UTC
Last modified: 12 Jun 2012 | 0:51:44 UTC

Changed it. Surprised I missed that... Ran about 5-7 seconds longer with other cores being used for WCG. So 60-61 WCG suspended amd 65-67 with it running on 6 threads I believe. Oh and RZ, mine apparently had swan sync =0 working as well. Didn't change any settings manually.

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Message 25648 - Posted: 12 Jun 2012 | 1:10:27 UTC - in response to Message 25647.

There is more CPU usage at the start and finish of the GPU tasks, so the performance of longer tasks might differ. I expect they would be less effected by running CPU tasks (especially when using 6threads from 8). So having 2 free or 8 free might make very little difference for the normal GPUGrid tasks on the 4.2app.
Worth checking again though; some presumptions may have to change when the apps changes.
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Message 25652 - Posted: 12 Jun 2012 | 11:08:58 UTC
Last modified: 12 Jun 2012 | 11:20:10 UTC

ID 31329 XP 64bit GTX560Ti CC2.1, driver 301.42, Swan_Sync NOT set
6.46 CUDA4.2 run times 101 - 107s
6.46 CUDA4.0 run times 224 - 226s

ID 96212 W7 64bit GTX260 A.2 (65nm), driver 295.73, Swan_Sync set
6.46 CUDA4.2 run times 298 - 316s
6.46 CUDA4.0 run times 499 - 502s

Good job guys

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Message 25657 - Posted: 12 Jun 2012 | 13:50:05 UTC

http://www.gpugrid.net/workunit.php?wuid=3492000

Look this one, an error. Thought it will be over :(

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Message boards : Graphics cards (GPUs) : new beta application 6.46 cuda4.0 and cuda42 for windows out

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