GPU app release

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Timo Strunk
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Message 4705 - Posted: 16 Dec 2011, 20:20:42 UTC
Last modified: 17 Dec 2011, 10:58:25 UTC

Alright, the first linux OpenCL application is out. If you want to use it, you should use the latest BOINC prerelease (the non-stable releases are usually here: http://boinc.berkeley.edu/dl/ ). All the versions below showed some bugs, we could not workaround on the server. You should then check that your BOINC client reports an OpenCL capable card (AMD needs OpenCL 1.0, Nvidia 1.1).
So, der erste GPU Client ist raus. Wenn ihr ihn benutzen wollt, müsst ihr den neuesten BOINC Prerelease verwenden http://boinc.berkeley.edu/dl/ . Frühere Versionen könnten theoretisch auch gehen; bei uns gab es mit denen aber meist "no work sent" Fehlermeldungen. Ihr müsst dann schauen, dass euer Client eine OpenCL fähige Karte erkennt (AMD Leute brauchen OpenCL 1.0, bei Nvidia gehts ab 1.1).

Edit: I just got the first GPU workunit from the production server and it's running. Please post your results here; especially your used GPU. Thanks
Edit 2: The credits were too low for these workunits due to our mistake; they have been adjusted upwards also for already retrieved workunits.
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FrankHagen

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Message 4707 - Posted: 16 Dec 2011, 22:49:28 UTC - in response to Message 4705.  
Last modified: 16 Dec 2011, 23:05:20 UTC

probably you are one of the first:

http://boinc.fzk.de/poem/workunit.php?wuid=56011312

but 14.45 credits?

better duck and cover..

.. oh yes, i remember you were told that creditnew works better for GPU-apps.

ROTFASTC!

[EDIT]

OMFG: http://boinc.fzk.de/poem/results.php?hostid=105448&offset=0&show_names=0&state=3&appid=

no comment!

[/EDIT]
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Timo Strunk
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Message 4708 - Posted: 16 Dec 2011, 23:39:46 UTC - in response to Message 4707.  

Well your CPU workunits get a factor of about 30 less credit. When calculating a factor of 50 for the gpu speedup that seems to be quite ok.

Please tell me, what I am missing.

Thanks,
Timo

probably you are one of the first:

http://boinc.fzk.de/poem/workunit.php?wuid=56011312

but 14.45 credits?

better duck and cover..

.. oh yes, i remember you were told that creditnew works better for GPU-apps.

ROTFASTC!

[EDIT]

OMFG: http://boinc.fzk.de/poem/results.php?hostid=105448&offset=0&show_names=0&state=3&appid=

no comment!

[/EDIT]


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Message 4709 - Posted: 16 Dec 2011, 23:43:20 UTC

What is Your problem Frank?
You count 4 times faster but you get 10 more points.
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FrankHagen

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Message 4710 - Posted: 16 Dec 2011, 23:50:48 UTC - in response to Message 4709.  
Last modified: 16 Dec 2011, 23:51:35 UTC

What is Your problem Frank?


i have no problem!

i have learned (took quite some time) how creditnew "works" and stay away.

and i do know how the majority of GPU-crunchers will react if they get credits like that: pulling plugs as fast as they can.


You count 4 times faster but you get 10 more points.


well - just call this whole thing credit-gaga and i'll sign.
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Timo Strunk
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Message 4711 - Posted: 16 Dec 2011, 23:54:19 UTC - in response to Message 4710.  

Yes, but I didn't quite understand yet: Do you think the credits are too low or too high?

What is Your problem Frank?


i have no problem!

i have learned (took quite some time) how creditnew "works" and stay away.

and i do know how the majority of GPU-crunchers will react if they get credits like that: pulling plugs as fast as they can.


You count 4 times faster but you get 10 more points.


well - just call this whole thing credit-gaga and i'll sign.

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Message 4712 - Posted: 17 Dec 2011, 0:04:05 UTC

Way to Low, at the very least your going to have to have a Set Amount of Credit to Attract the GPU Users, from the Times I see right now a Minimum of 500 Credits would be in line with what Albert@home gives out at their BETA Project. Even at that your not going to Attract a whole bunch of GPU Users but enough will run it for a little while anyway ... IMO
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Timo Strunk
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Message 4713 - Posted: 17 Dec 2011, 0:17:24 UTC - in response to Message 4712.  

Way to Low, at the very least your going to have to have a Set Amount of Credit to Attract the GPU Users, from the Times I see right now a Minimum of 500 Credits would be in line with what Albert@home gives out at their BETA Project. Even at that your not going to Attract a whole bunch of GPU Users but enough will run it for a little while anyway ... IMO


500 credits for the workunit giving 14.45 running for 2850 seconds

In comparison 9,700 seconds for the cpu workunit with 1.44 credits.

That's
500c/2850s = 0.175 credits/second gpu

and
1.44/9700 = 0.00015 credits/second cpu

which would mean that the GPU gives 1179 times more credits than the CPU.

Our app is optimized for GPU now; we get a worst case speedup of 30 towards a CPU and a best case speedup of 150 towards CPU.

A speedup of 1000 is impossible for us to attain. Yes, you can have that for ultra-specific workloads (for example I guess 1000 independent random processes). but I don't know of any real life example, where this was attained. Bitcoins maybe?

Best,
Timo
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Message 4714 - Posted: 17 Dec 2011, 0:19:41 UTC
Last modified: 17 Dec 2011, 0:21:06 UTC

I leave a core open to support the GPU. I could just un-install the GPU and save electricity for the same credits (somewhere else apparently).

Is this April 1st?

I would really like to push for a few milestones, but this gives literally zero incentive.
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FrankHagen

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Message 4715 - Posted: 17 Dec 2011, 0:25:29 UTC - in response to Message 4708.  

Well your CPU workunits get a factor of about 30 less credit. When calculating a factor of 50 for the gpu speedup that seems to be quite ok.

Please tell me, what I am missing.

Thanks,
Timo


just let that host run a few WU's on other GPU projects and you'll see that you are that much way out of reach.

i do take into account that it's 0.01 - there's hope for a lot of improvement.

currently you are using about a full cpu-core to feed the GPU - this is not considered as being great out here.

if you can not speed it up way more compared to CPU-apps, it's a bummer.

your call!

and last: if you deliver WU's with a pretty decent amount of computing effort and credits for those are "all over the place", the community will not like it and vote by moving.

of course there allways is someone who'll tell you that it does not matter..
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Message 4716 - Posted: 17 Dec 2011, 0:29:35 UTC
Last modified: 17 Dec 2011, 0:42:51 UTC

500 credits for the workunit giving 14.45 running for 2850 seconds

In comparison 9,700 seconds for the cpu workunit with 1.44 credits


9,700 seconds for 1.44 Credits ... lol ... You may as well give 0 Credits & find out who really wants to run the Project ...

It's your Project so give what you want ...
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Message 4717 - Posted: 17 Dec 2011, 3:26:27 UTC - in response to Message 4716.  

Greetings Timo

Congratulations on getting GPU up and running, I am looking forward to the windows version to run with my HD 5850.

Well keep up the good work and have a Merry Christmas.

Regards
Tazzduke
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Message 4718 - Posted: 17 Dec 2011, 5:19:37 UTC

So AMD 58xx gets about 21 points/hour ? That's 504 credits/day.
Well milkyway gives 200 000 points/day,Moo!Wrapper gives 300 000 points/day and collatz gives 200 000-250 000 points/day. How does 504 compare to those and attract gpu crunchers? Well done getting opencl gpu app working, but points really suck and only thing we crucnhers get back with huge elektric bill is the points.
My Boinc Blog
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Amauri

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Message 4719 - Posted: 17 Dec 2011, 6:35:22 UTC - in response to Message 4718.  

We're here for science, not for points. If you want points, go to DistrRTGen, in 2-3 days I've got 18000 credits with my poor GT 520, then I dettached because of this high credit policy.

Einstein, the same, I didn't dettach but reduced the share from 100 to 50. Also Milkyway. SETI gives reasonable punctuations, not so high and not so low, it's a good reference point.
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Salmela

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Message 4720 - Posted: 17 Dec 2011, 8:34:42 UTC - in response to Message 4719.  

Agree with Amauri. Most of us are here for the science, not for credit chasing.
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Message 4721 - Posted: 17 Dec 2011, 8:52:17 UTC - in response to Message 4713.  


That's
500c/2850s = 0.175 credits/second gpu

and
1.44/9700 = 0.00015 credits/second cpu

which would mean that the GPU gives 1179 times more credits than the CPU.


It's easy to obtain this 1179 times more.
You reduce the cpu credit!!!!!
One of my last wu is 7,049 second and 41.42 credits, 0,058 credits/second cpu
0,058/0,00015=3866 !!!!
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TRuEQ & TuVaLu

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Message 4722 - Posted: 17 Dec 2011, 9:16:51 UTC

I see the same here...

From 16'th to 17'th the credits are reduced alot on CPU tasks...

An example computor from a team member...

http://boinc.fzk.de/poem/results.php?hostid=69603

it shows aprox 90 credits the 16'th
and 1.44 credits the 17'th

for the same amount of time using the CPU

As of now credits varies between 14 credits for 2500gpu seconds here on POEM
and 6500credits for 2200seconds on an ATI 5850 GPU on Project Moowrapper.
even more credits here for shorter runs on project distrrtgen.
http://boinc.freerainbowtables.com/distrrtgen/result.php?resultid=17323205


You should go back to the old CPU credits award and give credits to GPU crunchers somewhere betwwen 14 and 6500 credits.
You could use the GPU credits to attract more or less people to your project by increase or decrease the credits given for a single task.


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Profile [VENETO] boboviz

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Message 4723 - Posted: 17 Dec 2011, 9:19:13 UTC - in response to Message 4719.  

We're here for science, not for points.


Ok, not considering gpu.....but 1,44 point for 9000 seconds is not points, it a joke!
cpu crunchers will fly away and gpu crunchers will not arrive
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Message 4725 - Posted: 17 Dec 2011, 9:39:06 UTC - in response to Message 4720.  
Last modified: 17 Dec 2011, 9:53:16 UTC

Agree with Amauri. Most of us are here for the science, not for credit chasing.


Well then you should be Tickled Pink with the sub .50 Credits Per Hr your getting now Compared to the 30+ Credits Per Hr you were getting a few Days ago. I guess the Credit drop was to keep you Science Boys Happy, wouldn't want all the GPU's coming in here to help the Project out ...

60611911 55970844 16 Dec 2011 | 16:12:10 UTC 17 Dec 2011 | 9:10:02 UTC Completed and validated 9,808.71 8,953.14 1.44 POEM++ v0.07
60611312 55862867 16 Dec 2011 | 15:33:37 UTC 17 Dec 2011 | 8:48:35 UTC Completed and validated 9,859.39 8,979.45 1.44 POEM++ v0.07
60585219 56006462 15 Dec 2011 | 16:11:20 UTC 16 Dec 2011 | 17:46:08 UTC Completed and validated 9,990.30 9,103.08 1.44 POEM++ v0.07
60584270 56005785 15 Dec 2011 | 15:31:11 UTC 16 Dec 2011 | 17:46:08 UTC Completed and validated 10,064.71 9,144.10 1.44 POEM++ v0.07
60561707 55987440 14 Dec 2011 | 17:14:53 UTC 15 Dec 2011 | 17:37:07 UTC Completed and validated 9,881.82 9,017.52 87.81 POEM++ v0.07
60560914 55986814 14 Dec 2011 | 16:36:34 UTC 15 Dec 2011 | 17:23:34 UTC Completed and validated 9,868.69 8,986.09 87.76 POEM++ v0.07
60538876 55969578 13 Dec 2011 | 19:24:38 UTC 14 Dec 2011 | 18:31:27 UTC Completed and validated 9,988.32 9,105.17 88.82 POEM++ v0.07
60537581 55876551 13 Dec 2011 | 18:18:18 UTC 14 Dec 2011 | 18:31:27 UTC Completed and validated 9,786.95 8,961.10 86.98 POEM++ v0.07
60534061 55965893 13 Dec 2011 | 15:18:27 UTC 13 Dec 2011 | 19:20:48 UTC Completed and validated 7,595.51 7,254.90 68.19 POEM++ v0.07
60511007 55721403 12 Dec 2011 | 17:15:40 UTC 13 Dec 2011 | 16:28:09 UTC Completed and validated 7,705.37 7,371.07 67.82 POEM++ v0.07
60508209 55946006 12 Dec 2011 | 14:53:59 UTC 12 Dec 2011 | 19:31:52 UTC Completed and validated 7,763.24 7,455.39 68.99 POEM++ v0.07
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Timo Strunk
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Message 4726 - Posted: 17 Dec 2011, 10:13:44 UTC

Hi everybody,

First of all: I am sory for the workunits run during the night. Actually: It's true. The relative scale of CPU vs. GPU was correct, but the CPU credit was reduced and a lot.

The reason is simple. When everybody was complaining about CreditNew, I implemented per Workunit Credit again. It didn't work and I found out that the reason is also in the Server Code, which I was unable to fix by myself. I experimented with it and left my code intact.

When I upgraded the server, the bug on the BOINC server side for credit per wu got fixed; hence the per wu credit was enabled without me knowing it.

I'm sorry for that. I will change the credit of the already sent wus by a factor of 60 and change to CreditNew.

As to pleasing the science crowd: That's really not it. Implementing the credit system in the beginning was a mistake in my opinion, but now that it's there, the only problem is gauging it out a bit between the projects. We do not want to overgrant, especially because we do not want to attract other users away from other projects. It's nice to have many users, but we do not want to cheat for that.

Sorry again,
Timo
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Message boards : News : GPU app release


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