so how goes the ati multibeam app ??

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Profile Peter M. Ferrie
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Message 964593 - Posted: 19 Jan 2010, 11:48:24 UTC

any news on the creation of one, a bi weekly or monthly update by whoever is trying . could keep us in the know
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Message 964599 - Posted: 19 Jan 2010, 12:30:09 UTC - in response to Message 964593.  

any news on the creation of one, a bi weekly or monthly update by whoever is trying . could keep us in the know


I don't know about an ATI MB App, but for upto date info about the ATI AP CPU/GPU Hybrid App you could head over to Seti Beta. Where it's being tested.
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Profile Peter M. Ferrie
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Message 964663 - Posted: 19 Jan 2010, 17:19:07 UTC

there is also a sticky in this forum

was wondering about the multibeam app .... on a side note i was reading that someone on ngohq.com that they modified ati drivers to run cuda so mabye that is something we here can attempt to do .. then us ati guys ... via (cuda)
can start to crunch with our cards
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Message 964664 - Posted: 19 Jan 2010, 17:25:55 UTC - in response to Message 964663.  
Last modified: 19 Jan 2010, 17:27:21 UTC


Post this on the opt. crew site: http://lunatics.kwsn.net
..and they will look if it's possible.



BTW. The 'opt.'- ATI AP CPU/GPU Hybrid App of the opt. crew is already published here in MAIN.
The 'stock'- ATI AP CPU/GPU Hybrid App is tested at BETA.
'Message 963185' in the sticky thread.


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Message 964712 - Posted: 20 Jan 2010, 3:04:44 UTC

Work on the hybrid AP ATI application is being held up by the Master Science Database issues... Go figure. Shortly as the Tech News implies we might see some relief shortly.

Without saying too much the from the developers forum at Lunatics (non visible to most users). The AP application ports "more" nicely than Multibeam. It has also been ported to Mac (both). A part of this is the Code to port multibeam is mostly "Brain Dead." That is why it a hybrid (works between CPU and GPU to make the best of both worlds). So while simple things work for other projects (no heavy math involved.) Seti is very math intensive (FFT), ATI does not support that. Nvida does.

So while things are on the horizon, it will take a few more weeks before things start to show up. They will show up in Seti Beta first.

So while a couple of Seti users were promoted from beta tester to alpha testers at Lunatics. Lunatics is still looking for a few "Good" testers.

The price for admission is a minimum post count and the ability to take a machine offline for from 5 minutes to a couple of hours depending on the Application being tested. Or in some cases online testing. Yes, tests for Astropulse take longer. Good AMD machines are missing. A larger population of ATI/Nivdia GPU's is welcomed.

What gets you promoted over at Lunatics is "consistent participation" (here and there).

If you go look, you might see many names that you know.

Regards


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Message 964758 - Posted: 20 Jan 2010, 13:51:25 UTC - in response to Message 964712.  

I post over there now and then when I can actually add something to the discussion but I'm so computer illiterate most of the time I do more harm than good. If I'm having a problem I will try to let them know what is happening or if my problem is like someone elses then I will chime in. Most of what goes on over there is way over my head though.


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Message 964760 - Posted: 20 Jan 2010, 14:24:29 UTC

I am putting together a list of hardware for a new dual 1366 build.

Any idea when the app will be released on the main app?

Also, is ATI just as fast as NVIDIA in number crunching?
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Message 964765 - Posted: 20 Jan 2010, 14:55:35 UTC - in response to Message 964760.  

People who post from Milkyway and Collatz say that ATI is the best thing since sliced bread, but the only metric they seem to quote is BOINC credit - which as we all know is not (in practice) a calibrated gold standard.

The latest news from the Lunatics coal-face is that ATI HD 4xxx-series will have very slow real-world performance on SETI or Astropulse type tasks, because of poor memory hardware (source: Aph News).

So your hardware list should start at HD 5xxx, if you're planning to go down the ATI route.
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Message 964766 - Posted: 20 Jan 2010, 15:13:05 UTC - in response to Message 964765.  

that's pretty interesting.
I moved from a 2600XT to a HD 4770 on Collatz. the 2600 ran around 2 hourson the older WU's. The 4770 ran about 10 minutes on the old WU's and now 16-17 minutes on the 2.09 app. I know something is weird with the 4770. it has 512Mb of Gddr5 Memory the clock speeds and memory speeds are similar to cards in the same range. I noticed that the 4770 drivers are specific for it. Other cards are noted by 5800 series, 5700 series etc.

I think that I'll be moving up to a 5800 series card at the end of the month.


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Message 964788 - Posted: 20 Jan 2010, 17:35:33 UTC - in response to Message 964766.  

the reason not in global memory speed.
Current OpenCL runtime from ATI doesn't use so called GPU local memory (small but fast one, just like CPU cache in this aspect) on 4xxx cards, only on 5xxx ones.
And all that less than 4xxx will be not supported in OpenCL at all.
While it still possible to write fast app using CAL IL or even ISA directly, this would be too big effort to expect results soon. Next ATI-compatible app most likely will be OpenCL one, hence Richard's conclusion.
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Message 964798 - Posted: 20 Jan 2010, 19:12:11 UTC - in response to Message 964788.  

the reason not in global memory speed.
Current OpenCL runtime from ATI doesn't use so called GPU local memory (small but fast one, just like CPU cache in this aspect) on 4xxx cards, only on 5xxx ones.
And all that less than 4xxx will be not supported in OpenCL at all.
While it still possible to write fast app using CAL IL or even ISA directly, this would be too big effort to expect results soon. Next ATI-compatible app most likely will be OpenCL one, hence Richard's conclusion.

It was also posted recently that GPUGrid will only support "5xxx series cards based on the new GPU chips" for their forthcoming ATI application - presumably for much the same reason.
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Message boards : Number crunching : so how goes the ati multibeam app ??


 
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