SETI applications for NVIDIA GPU improvement - how you can help

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Message 1814870 - Posted: 3 Sep 2016, 20:46:39 UTC - in response to Message 1814841.  

Not seen a lot of improvement with both in the commandline. Few seconds improvement

Normal AR
http://setiathome.berkeley.edu/result.php?resultid=5134899382
WU true angle range is : 0.445407
Run time 4 min 1 sec
CPU time 3 min 55 sec


http://setiathome.berkeley.edu/result.php?resultid=5135025942
WU true angle range is : 0.432571
Run time 4 min 6 sec
CPU time 3 min 39 sec


VLARs
http://setiathome.berkeley.edu/result.php?resultid=5134892915
WU true angle range is : 0.010503
Run time 7 min 7 sec
CPU time 7 min 4 sec

http://setiathome.berkeley.edu/result.php?resultid=5134893156
WU true angle range is : 0.011400
Run time 7 min 20 sec
CPU time 7 min 18 sec
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Message 1814876 - Posted: 3 Sep 2016, 21:03:42 UTC - in response to Message 1814871.  

any noticeable improvement could be only on VLAR cause it's PulseFind area and VLAR is where PulseFind dominates.
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Message 1814892 - Posted: 3 Sep 2016, 22:39:15 UTC

Raistmer, suggestions for future improvements:

Check if Nvidia OpenCL offers a way for an application to check the temperature of its GPU. If so, occasionally check it, and print the maximum value somewhere in stderr. This should make overheating as a cause of problems more obvious.

Also, when the Task postponed: Suspicious spike results notice is issued, mention it in stderr to help identify which task it was from.
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Message 1815405 - Posted: 6 Sep 2016, 20:47:36 UTC

We have 8.18 deployed on beta, test please. Hopefully they are new RC for main.
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Message 1815406 - Posted: 6 Sep 2016, 20:49:12 UTC - in response to Message 1814892.  

Raistmer, suggestions for future improvements:

Check if Nvidia OpenCL offers a way for an application to check the temperature of its GPU. If so, occasionally check it, and print the maximum value somewhere in stderr. This should make overheating as a cause of problems more obvious.

Also, when the Task postponed: Suspicious spike results notice is issued, mention it in stderr to help identify which task it was from.

There is no temperature reading interface in OpenCL.
Also, no need to link to particular task in general, What is needed is the knowledge that smth wrong with computational device.
One could look into tasks list and see what task is postponed.
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Message 1815462 - Posted: 6 Sep 2016, 23:11:37 UTC - in response to Message 1815405.  
Last modified: 6 Sep 2016, 23:14:48 UTC

We have 8.18 deployed on beta, test please. Hopefully they are new RC for main.

I have switched 2 of my computers to beta, the first is a xeon E5-2670 8 core 16 thread with 2 GTX 750ti's the other is an AMD 1090T 6 core with 3 GTX 550ti's
I've got 2 gt 240, here on an E8500 core2duo, but the newest driver available from Nvidia is 241.96, I do not believe it is new enough for your open CL apps.
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Message 1815476 - Posted: 7 Sep 2016, 1:05:16 UTC - in response to Message 1815462.  
Last modified: 7 Sep 2016, 1:13:48 UTC

We have 8.18 deployed on beta, test please. Hopefully they are new RC for main.

I have switched 2 of my computers to beta, the first is a xeon E5-2670 8 core 16 thread with 2 GTX 750ti's the other is an AMD 1090T 6 core with 3 GTX 550ti's
I've got 2 gt 240, here on an E8500 core2duo, but the newest driver available from Nvidia is 241.96, I do not believe it is new enough for your open CL apps.


Latest version for GTS 240(which I am assuming, couldn't find GT 240) is 337.88, which is located here for windows Which does not result in invalids
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Message 1815482 - Posted: 7 Sep 2016, 1:28:24 UTC - in response to Message 1815406.  
Last modified: 7 Sep 2016, 1:28:48 UTC

Raistmer, suggestions for future improvements:

Check if Nvidia OpenCL offers a way for an application to check the temperature of its GPU. If so, occasionally check it, and print the maximum value somewhere in stderr. This should make overheating as a cause of problems more obvious.

Also, when the Task postponed: Suspicious spike results notice is issued, mention it in stderr to help identify which task it was from.

There is no temperature reading interface in OpenCL.
Also, no need to link to particular task in general, What is needed is the knowledge that smth wrong with computational device.
One could look into tasks list and see what task is postponed.

Writing that something is wrong with the GPU, with no checkable hint on what, does not help me find the problem. I am NOT going to get another 560 to try instead.

As for postponed tasks, that seldom lasts long enough for me to find time for looking at the tasks list.
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Message 1815628 - Posted: 7 Sep 2016, 22:39:44 UTC - in response to Message 1815476.  

We have 8.18 deployed on beta, test please. Hopefully they are new RC for main.

I have switched 2 of my computers to beta, the first is a xeon E5-2670 8 core 16 thread with 2 GTX 750ti's the other is an AMD 1090T 6 core with 3 GTX 550ti's
I've got 2 gt 240, here on an E8500 core2duo, but the newest driver available from Nvidia is 241.96, I do not believe it is new enough for your open CL apps.


Latest version for GTS 240(which I am assuming, couldn't find GT 240) is 337.88, which is located here for windows Which does not result in invalids


No, it is not a GTS 240, it really is a GT240
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Message 1815639 - Posted: 7 Sep 2016, 23:13:49 UTC


I've got 2 gt 240, here on an E8500 core2duo, but the newest driver available from Nvidia is 241.96, I do not believe it is new enough for your open CL apps.

Those GT 240's are using the latest (341.96, I noticed the typo) and very likely the last driver you'll be able to use with them as all pre Fermi GPU's are now regarded by Nvidia as legacy products so they will not be releasing anymore driver updates for them.

Cheers.
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Message 1815641 - Posted: 7 Sep 2016, 23:31:14 UTC - in response to Message 1815639.  

Sorry, yes it was a typo.
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Message 1815692 - Posted: 8 Sep 2016, 5:05:09 UTC

Here https://cloud.mail.ru/public/5Kth/LJGfW7s5i is new builds, r3528.
Please test if both recently found issues (CL file compilation, high prec timer omission in low-perth path) are fixed.
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Message 1815891 - Posted: 9 Sep 2016, 11:35:42 UTC

Finally, cards kindly donated by Mr. Kevvy and those shipment was organized and carried by Mike received and tested. Both in fine working condition.

I would like to thank you both, Mr. Kevvy and Mike, for this action.

Hope it will help to make some new discoveries on NV-specific optimization path.
Thank you!
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Message 1815896 - Posted: 9 Sep 2016, 12:12:09 UTC

And first results:
both GTX460SE and GTX570 confirmed compilation issue on PTX level for 8.18 NV build (errors wording is different but both failed to build CL file).
Also confirmed that r3528 is free from this issue.
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Message 1817033 - Posted: 14 Sep 2016, 3:56:17 UTC
Last modified: 14 Sep 2016, 3:56:43 UTC

8.19 (r3528) is deployed on beta. Please test.
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Message 1817054 - Posted: 14 Sep 2016, 5:18:54 UTC - in response to Message 1815896.  

And first results:
both GTX460SE and GTX570 confirmed compilation issue on PTX level for 8.18 NV build (errors wording is different but both failed to build CL file).
Also confirmed that r3528 is free from this issue.


Does r3500 share this problem or is it with some change since r3500? Does it affect the beta4 now under test?
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Message 1817056 - Posted: 14 Sep 2016, 5:45:38 UTC - in response to Message 1817054.  

And first results:
both GTX460SE and GTX570 confirmed compilation issue on PTX level for 8.18 NV build (errors wording is different but both failed to build CL file).
Also confirmed that r3528 is free from this issue.


Does r3500 share this problem or is it with some change since r3500? Does it affect the beta4 now under test?


r3500 doesn't have it.
r3528 doesn't have it too (8.19)
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Message 1817146 - Posted: 14 Sep 2016, 16:53:28 UTC
Last modified: 14 Sep 2016, 16:53:45 UTC

Just remind: the more different hosts will participate in beta currently the earlier we will be able to get main updated.
I would recommend to switch most computational resourses to beta for 1-2 next weeks.
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Message 1817167 - Posted: 14 Sep 2016, 19:33:29 UTC - in response to Message 1817033.  
Last modified: 14 Sep 2016, 19:33:51 UTC

Are there any default settings for switches (ex  -sbs N where N=128) of which we should be aware?
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Message 1817170 - Posted: 14 Sep 2016, 19:45:10 UTC - in response to Message 1817146.  

I would recommend to switch most computational resourses to beta for 1-2 next weeks.

There goes my RAC :)
You got it ...
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Message boards : Number crunching : SETI applications for NVIDIA GPU improvement - how you can help


 
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