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cjslman
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Re: Any point to continuing with CPU version?

Sekerob... thanks for the response... let me clarify... I was NOT attacking the move towards GPU crunching... I think it's great that more can be done with GPU processing. I was answering l_mckeon post about "Any point to continuing with CPU version?". I apologize for not referring his post in my answer. I'll edit my post to reflect this.

Question: Any stats on how many people crunch with CPU vs GPU for HCC?

CJSL

Crunching for a better world...

[edit]: Added a question.
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I follow the Gimli philosophy: "Keep breathing. That's the key. Breathe."
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[Edit 1 times, last edit by cjslman at Oct 24, 2012 1:41:58 PM]
[Oct 24, 2012 1:34:47 PM]   Link   Report threatening or abusive post: please login first  Go to top 
rembertw
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Re: Any point to continuing with CPU version?

vinas1,

The basic idea of all (or most at least) distributed computing is that it works during the spare cycles. One might even argue that "investing in 50+ cores" exclusively for DC is even cheating because you create on purpose a pool of spare cycles instead of just recycling those cycles that are idle ayway.

Then again, if and when I decide to buy a new box for private use, I might also check the GPU for compatability. And maybe spend a few € extra...

blushing

Not really jealous of the GPU crowd concerning crunching. Only unwilling at this time to spend money solely for WCG credits.
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Sgt.Joe
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Re: Any point to continuing with CPU version?

Well, having invested in 50+ CPU cores, those of us that have all that money tied into CPU crunching are feeling more than a little bit left out. My honest opinion is that the GPU points are somewhat too generous and risk discouraging the CPU crunchers all together. I'm a little on the fence about this though, I mean with new technology comes more possibilities. GPU crunching is one of these things... Lower power, more results in less time, and much lower cost than CPU crunching. Maybe it's time to cut these rigs loose and just invest into all GPU? Or maybe I just shut them down and run a couple rigs and save on all that electricity. Decisions, decisions...

I too have invested in only cpu cores(at the moment 33) because I am using equipment which is at least 3 generations old and older (and cheap). Not the most efficient, but all of the rigs crunch pretty well. Right now there is only one project(at WCG) which uses gpu so there are still plenty of projects which use only cpu. To me only the results matter, not the points. The points are interesting statistically and as a measure of efficiency, but I can not buy a cup of coffee with them. Too many projects - not enough power sad Crunch on.
Cheers
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mikey
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Re: Any point to continuing with CPU version?

vinas1,

The basic idea of all (or most at least) distributed computing is that it works during the spare cycles. One might even argue that "investing in 50+ cores" exclusively for DC is even cheating because you create on purpose a pool of spare cycles instead of just recycling those cycles that are idle ayway.

Then again, if and when I decide to buy a new box for private use, I might also check the GPU for compatability. And maybe spend a few € extra...

blushing

Not really jealous of the GPU crowd concerning crunching. Only unwilling at this time to spend money solely for WCG credits.


I too have a BUNCH of cpu cores and gpu's too...and beg to differ with your characterization about 'spare cycles'. I have only bought new cpu's and gpu's as a result of my working on friends pc's which has created a small amount of disposable income. But MOST of my pc's come from those friends pc's that I have worked on upgrading them to newer versions of hardware, keeping their older ones as my 'spare' ones. YES I have bought SOME new parts, but after spending only $200US on parts and using those friends pc's 'spare' parts I can make an 8 core AMD pc with two AMD 5770 gpu's capable of returning 2 gpu units in under 5 minutes while at the same time running 8 cpu units! Now to be fair I build my own pc's so the costs are MUCH lower than if I had someone else do it. But I DO use 'spare' parts, I have DRAWERS full, and have 8 pc's sitting on the floor that COULD be running by this afternoon IF I had the electricity available here at my home. I currently have 13 pc's up and running and have to be careful as the circuit breaker will pop if too many pc's are plugged into the same circuit! ALSO outlet plates getting HOT to the touch is NOT a good thing either!! I DO agree that BUYING pc's is NOT what was originally how Boinc was conceived but 'spare' is in the mind of the beholder, so my 'spares' could be your primary pc's.
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dskagcommunity
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Re: Any point to continuing with CPU version?

i find its good for the other wcg projects too, because at the time i changed all CPU cores from HCC to Proteome folding while gpus running hcc. So two projects gets attention now (in my chase) only because one project (my mainproject :) starts with gpu ;)
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Crunching for my Dog who had "good" Braincancer.


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astrolabe.
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Re: Any point to continuing with CPU version?

Is the CPU version of HCC worth crunching any more, considering the huge efficiency gains obtained from the GPU version, and with probably a lot more GPU cards specially on order which will speed up the process even further?
I have a 3 core that has been running at 90% for the last 3 years and never needed to worry about impacting my daily work. My new Quad, also running at 90%, comes to a violent stall with the first GPU WU.

The first rhetorical question is: Why run a CPU job with zero user impact when you can run GPU jobs that brings a Quad to the ground?

The second rhetorical question is: Why would you want to ignore the available spare CPU cycles on a computer with no SUPPORTED GPU?
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l_mckeon
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Re: Any point to continuing with CPU version?

I think some have missed the point.

It's been said that "every cycle counts", but when hugely superior alternatives exist, then they don't, really. In a very short time if all the CPU HCC crunchers were to leave, the work flow would hardly notice the difference (as best I can infer from reading various posts about the progress on GPUs).

There have been comments like "what if I don't have a GPU?" Well there are plenty of other projects to crunch for, and while I too use points and badges as a fun motivator, lets not forget the ultimate purpose of WCG should be to do the best for the community through the research options. Where GPUs can do the work much quicker than a CPU, it seems to me the best public service option would be to transfer your cycles to a project where they can still make a difference.

Don't forget crunching has a real cost both in monetary terms and environmental pollution.
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Former Member
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Re: Any point to continuing with CPU version?

As It may be faster, and will be here soon anyways, lets all shut down and wait for ... (insert next best thing here).

Better yet why not take what we have and use it to the fullest and get it done before it arrives. Just becuase a GPU does xxxx wu a day and a cpu does only yy that is still xxxx+yy done (aka closer to the goal and that many more then GPU alone can do) Even a 1% increase in production is good
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Deluxe_Cabinets_And_Granite
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Re: Any point to continuing with CPU version?

I think it depends on whether or not the scientists add additional work to the project (especially if the complexity of the new target takes into account the increased power of GPU processing)

Personally, if continued CPU processing ends this project 1 day earlier, ands gets the results to the scientests 1 day earlier, I'm all for that! It might mean a cure 1 day sooner!

I realize that WCG had to start somewhere with GPU processing, and that they probably felt that HCC was best suited (for whatever reason), but I would think that project scientists were preparing for this additional power. What scientist wouldn't jump at the chance to harness a quantum leap in raw computing power to throw at something like this?
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[Edit 1 times, last edit by anthonyagresta_dot_com at Oct 25, 2012 1:31:42 AM]
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mmstick
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Re: Any point to continuing with CPU version?

Considering how I joined a team of over 768 active members, and my single HD 7950 produces 60% of all the results and PPD from that alone, tells me that there is no reason to carry CPU apps for this project any more. It would be better for people to use their CPUs on other projects that do not have GPU acceleration. One person using a single GPU is worth many, many, many countless high end processors. In order to get equivalent results with processors alone, I would have to have upgraded my 24+ cores of highly overclocked processor cores to around 240+ cores worth of machines in order to equal the single graphics card I use today.
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[Edit 1 times, last edit by mmstick at Oct 25, 2012 5:14:11 AM]
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