Astropulse on GPU's?

[hellsheep]

Hey,

I was thinking to myself after seeing a few AP work units in my cache, wondering if it'd be possible to run astropulse on a GPU instead, increasing efficiency and getting them reported faster. If it's possible are there any down sides to it?

[IrishFBall32]

To my understanding, GPUs are not well suited to the type of math AP does. They might be useful simply as extra cores, but would probably be slower than a real CPU core.

[Raistmer]

Hey,

I was thinking to myself after seeing a few AP work units in my cache, wondering if it'd be possible to run astropulse on a GPU instead, increasing efficiency and getting them reported faster. If it's possible are there any down sides to it?

If you have ATI GPU then yes, it's possible.
For NV GPU it's possible too, but if you own NV GPU better use it for MB crunching.

[hellsheep]

Hey,

I was thinking to myself after seeing a few AP work units in my cache, wondering if it'd be possible to run astropulse on a GPU instead, increasing efficiency and getting them reported faster. If it's possible are there any down sides to it?

If you have ATI GPU then yes, it's possible.
For NV GPU it's possible too, bu4 if you own NV GPU better use it for MB crunching.

Do you know how long it takes an ATI GPU to process a AP WU?

[Raistmer]

Look at my own host on SETI beta/main for example
http://setiweb.ssl.berkeley.edu/beta/results.php?hostid=39394

Don't take too seriously high-time results - they from currently developing app and will be improved, lower values are more typical.

EDIT: Elapsed:17,347.96   CPU:2,018.83 is smth typical for my Quad9450 with HD4870 GPU.

[hellsheep]

Very nice.

Shame i only have nVidia GPU's.

[Slawek]

hi,

any progress in App`s NV for AP ?

[Devaster]

of course . i builds are avaiable in beta testing area

[IrishFBall32]

Glad to see some work is being done in this direction... It had been my understanding that the math done by AP didn't lend itself to GPU computing very well, but apparently I stand corrected

[cristipurdel]

of course . i builds are avaiable in beta testing area

NVIDIA builds for AP? I cannot see them.

[Raistmer]

of course . i builds are avaiable in beta testing area

NVIDIA builds for AP? I cannot see them.

Actually in alpha.

[Frizz]

of course . i builds are avaiable in beta testing area

NVIDIA builds for AP? I cannot see them.

Actually in alpha.

Can I start a thread in the "Public Release Beta Test Forum" with my compiled version? It works fine offline and I have crunched about 25 units online so far. 1 validated, the rest is waiting for validation.

[Jason G]

Can I start a thread in the "Public Release Beta Test Forum" with my compiled version? It works fine offline and I have crunched about 30 units online so far. 1 validated, the rest is waiting for validation.

  I'd recommend keep to Alpha crew for this moment, and I'll give a hand testing later tonight.  If we're both able to verify it works, and have some idea of performance on a few different cards we'll move to beta.

[Edit:] if you have some changes already that don't disturb Raismter's code paths, I'll need to enable write access for you too, so you can commit.

Jason

[Raistmer]

I agree with Jason. Original code was tested on ATI platform and can have some unexpected features on NV (look dev thread).
We can wait a little before beta.

[Frizz]

I agree with Jason. Original code was tested on ATI platform and can have some unexpected features on NV (look dev thread).
We can wait a little before beta.

Agreed.

I've started a thread in Development Area.
http://lunatics.kwsn.net/gpu-crunching/alpha-testing-of-opencl-ap-for-nvidia-cards.0.html