Your right Mark you can get them cheap .

Klik CPU's are also developing too . You need the CPU to feed the GPU anyway so why not use it .

The projects are still voluntary and are meant to use free cycles !!!

If people become Bionic nuts as some would say there's no reason just to change the project .

I don't think there going to get rid of CPU's any time . So why not use them !!

As for the IGPU and ARM processors ...

IGPU not that fast and i would rather have more cores than lose them and have a IGPU

And ARM processors ....there a long way short of catching up with desktops

Depending on which iGPU is specified it may complete work faster then a CPU core. In the case of a Haswell based i5-4670: The Intel HD 4600 @ 1.2GHz takes less times than a CPU core @ 3.4GHz.
However it is a numbers game & using 4 CPU cores produces more work done a day than the iGPU can muster by itself. At least for the moment.


In reference to the Xeon servers being as fast as multi-GPU systems.
With my dual Xeon E5645 12c/24t server I don't see SETI@home throughput anywhere near multi-GPU levels. When running MB it will have a RAC between 12-14K & then for AP a RAC between 16-18K. While my 5 year old HD6870 running AP will produce a RAC between 25-30K by itself. The CPU will add about another 12K to the RAC running 4 at a time. So a 5 year old mid range GPU seems to be enough to best a 24 core monster from the same era.
If you want to consider power to performance. The 24 core server, a Dell T410, averages 210w according to the UPS logs. Which is similar to the 190w my i5-4670k with a HD6870 running 5 tasks (4CPU+1GPU) uses. So I'm glad I don't have to pay the electric bill for the server.


When running multiple projects it is preferable to have CPUs. As some projects don't yet support GPUs or they only support one GPU vendor. Which is also why I have 8 old dual Xeon 3.0GHz 1c/2t servers crunching away. They may be slow, but collectively they are doing 32 tasks at a time.
All together I have 139 CPU cores & 11 GPUs running across various projects. All of the CPU's running SETI@home, but about half of the GPUs run other projects because they are to old for SETI@home.

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SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[

I've listed some of the GPUs I'm using...making about 6.700 points on BOINC daily!
with about 20-25days of CPU (cores) I get 13.500 BOINC points...

so yes, why use CPUs @ all?
they seem to be SO SLOW...
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

I've listed some of the GPUs I'm using...making about 6.700 points on BOINC daily!
with about 20-25days of CPU (cores) I get 13.500 BOINC points...

so yes, why use CPUs @ all?
they seem to be SO SLOW...
;)

Because there is life (and even BOINC projects) outside SETI.

I've listed some of the GPUs I'm using...making about 6.700 points on BOINC daily!
with about 20-25days of CPU (cores) I get 13.500 BOINC points...

so yes, why use CPUs @ all?
they seem to be SO SLOW...
;)

I've been lurking for some time, but I have to ask you a simple question: in what way, shape or form, does me (or any other user) running CPU or CPU+GPU tasks change your performance in SETI or any other project? Plus, if tomorrow SETI moved to GPU only, how would that benefit the project?
You keep posting numbers about how much faster the GPUs are. We all know the GPUs are faster! But that doesn't mean running CPUs is bad.
You said you have 3 GPUs. By your own logic you should throw the 2 slower GPUs away because they aren't as fast as the other one, thus not worth running.

Pointless discussion.

If you don't want cpu task, don't do them!
Leave them to people that do.

Pointless discussion

There's no point in trying to disscuss this with "KLIK" he think he knows best and whatever you say it wont make the slightest bit of difference to "him /her" (I aint to sure either way ;-) ) and think he's just "fishing" but if you want a "bite" better get some better bate mate :-)

Anyway, the better solution may seem to run Seti@home using your graphics card or cards, meaning the GPU and you therefore you are also supposed to be concerned about RFI, driver problems, screen or monitor lag and so on.

Also the server is likely to become saturated by results from finished tasks.

Perhaps time to forget about credit and possible results you may be able to achieve.

Anyway, the better solution may seem to run Seti@home using your graphics card or cards, meaning the GPU and you therefore you are also supposed to be concerned about RFI, driver problems, screen or monitor lag and so on.

Also the server is likely to become saturated by results from finished tasks.

Perhaps time to forget about credit and possible results you may be able to achieve.

yes, drivers seems to be issue...but it's the same with CPU drivers - just that OS usually have them already! ;)
btw, almost all new intel proc come with GPU integraded...a future is going in a way of GPUs...

& there is no LAG on monitors with SETi@home...but there is on other projects (GPUgrid, Asteroids@home, Einstein@home, ...)!

I've listed some of the GPUs I'm using...making about 6.700 points on BOINC daily!
with about 20-25days of CPU (cores) I get 13.500 BOINC points...

so yes, why use CPUs @ all?
they seem to be SO SLOW...
;)

I've been lurking for some time, but I have to ask you a simple question: in what way, shape or form, does me (or any other user) running CPU or CPU+GPU tasks change your performance in SETI or any other project? Plus, if tomorrow SETI moved to GPU only, how would that benefit the project?
You keep posting numbers about how much faster the GPUs are. We all know the GPUs are faster! But that doesn't mean running CPUs is bad.
You said you have 3 GPUs. By your own logic you should throw the 2 slower GPUs away because they aren't as fast as the other one, thus not worth running.

well, one is a work computer...so I have, what I have...can't really substitute 4 more, 'cause PSU hasn't come with extra power supply to GPU...so I can't have more than Quadro 2000 - which is quite fast! not 4 gaming, but does the job in 1/2 d time a GT730 does...
& GT730 is (I think) still the fastest PCIe x8 card...@ least it was on Christmas, when I bought it! ;)

why run the SETi@home on GPU?
it might not come today or tomorrow...but it's too power consuming to run the SETi@home on CPUs...& to be efficient in computations, SETi@home will probably switch to GPU only...@ least they get more GFLOP/W than any CPU!
also, GPUs r getting more & more powerful...so we might this year again run out of WU, 'cause there aren't anymore of them around...& work that GPUs r doing surpasses CPU today on SETi@home!
it will also leave CPUs 4 some other projects...not well written...but that r inferior to experiance of SETi@home team on Berkley with BOINC...
;)

I've listed some of the GPUs I'm using...making about 6.700 points on BOINC daily!
with about 20-25days of CPU (cores) I get 13.500 BOINC points...

so yes, why use CPUs @ all?
they seem to be SO SLOW...
;)

Because there is life (and even BOINC projects) outside SETI.

as soon as someone figures out that GPUs r enough 4 SETi@home, there will be people who would say: POWER EFFICENCY!
& SETi@home will switch to GPU only...

progress is undeniable...like one great writer from Croatia says:
"Only thing constant in this World, a change is!"
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

KLiCK?

...& work that GPUs r doing surpasses CPU today on SETi@home!

What is the percentage of work done on the project by GPU/CPU's?

I have always wondered that myself, and have never seen it mentioned.

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I've listed some of the GPUs I'm using...making about 6.700 points on BOINC daily!
with about 20-25days of CPU (cores) I get 13.500 BOINC points...

so yes, why use CPUs @ all?
they seem to be SO SLOW...
;)

Get a faster CPU?

http://m.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E5-2699+v3+%40+2.30GHz&id=2366

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I've listed some of the GPUs I'm using...making about 6.700 points on BOINC daily!
with about 20-25days of CPU (cores) I get 13.500 BOINC points...

so yes, why use CPUs @ all?
they seem to be SO SLOW...
;)

Get a faster CPU?

http://m.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E5-2699+v3+%40+2.30GHz&id=2366

$4000 for a CPU? r u crazy!

u get "a farm" of GPUs 4 that! ;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

I get around 6K doing MB's and 10K doing AP's on my CPU cores so why wouldn't I want to use them?

Cheers.

I get around 6K doing MB's and 10K doing AP's on my CPU cores so why wouldn't I want to use them?

Cheers.

+100

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With each crime and every kindness we birth our future.

[...]"Why use CPU S@H" ad nauseam trollbait[...]

I'll bite.

My reason: I'm running 5 relatively "old" rigs (the newest is from 2009), and it's not worth the investment of money, time or effort to add GPUs to any of them. While a total RAC of 9700+ isn't impressive, it isn't zero, either. I suspect that eliminating all participants who are in this same category would make a very noticeable difference for the worse in the amount of work done for S@H.

As has been said several times by several people:

There's no need to point out the obvious. We all know that GPUs are faster for most, but not all, tasks (e.g. vlars). And while CPUs are slower, they tend to provide more accurate and consistent results, unless they're overclocked to the extreme. This acts as a sanity check against GPU rigs, many of which can go bonkers simply by updating a driver.

Note that chipset drivers which -might- adversely affect the operation of a CPU are very, very rarely updated. If they were to affect the CPU as much as some GPU driver updates affect S@H results, it would be immediately apparent, with many other symptoms.

SETi@home will switch to GPU only...

And your authority for saying this comes from...where? Project devs? Mr. Anderson? No? I didn't think so. CPUs provide value to the project, whether you're willing to acknowledge the fact or not. Don't be in such a hurry to discount their contributions. You will not convince anyone that CPUs should/will not be used for S@H, so please let the thread die.

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Maybe somebody could provide some statistics, last 30 or 60 days or so, how much work has been done on cpus and how much on gpus. I guess that would prove that cpus are still important for this project.

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I've listed some of the GPUs I'm using...making about 6.700 points on BOINC daily!
with about 20-25days of CPU (cores) I get 13.500 BOINC points...

so yes, why use CPUs @ all?
they seem to be SO SLOW...
;)

Get a faster CPU?

http://m.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E5-2699+v3+%40+2.30GHz&id=2366

$4000 for a CPU? r u crazy!

u get "a farm" of GPUs 4 that! ;)

Well, get both, you can use 8 cores then to feed the gpus and still have 10 cores left which will add nicely to your rac;-)

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Maybe somebody could provide some statistics, last 30 or 60 days or so, how much work has been done on cpus and how much on gpus. I guess that would prove that cpus are still important for this project.

I would love to see that number!

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I think this says a lot.

Windows/x86 7.00 29 May 2013, 21:14:00 UTC 238,069 GigaFLOPS
Windows/x86 7.00 (cuda22) 29 May 2013, 22:56:08 UTC 403 GigaFLOPS
Windows/x86 7.00 (cuda23) 29 May 2013, 22:56:08 UTC 7,267 GigaFLOPS
Windows/x86 7.00 (cuda32) 29 May 2013, 22:56:08 UTC 16,644 GigaFLOPS
Windows/x86 7.00 (cuda42) 29 May 2013, 22:56:08 UTC 55,494 GigaFLOPS
Windows/x86 7.00 (cuda50) 29 May 2013, 22:56:08 UTC 109,443 GigaFLOPS
Windows/x86 7.03 (opencl_ati5_cat132) 30 May 2013, 0:18:19 UTC 6,171 GigaFLOPS
Windows/x86 7.03 (opencl_ati5_nocal) 30 May 2013, 0:18:19 UTC 3,502 GigaFLOPS
Windows/x86 7.03 (opencl_ati5_sah) 30 May 2013, 0:18:19 UTC 534 GigaFLOPS
Windows/x86 7.03 (opencl_ati_cat132) 30 May 2013, 0:18:19 UTC 20,617 GigaFLOPS
Windows/x86 7.03 (opencl_ati_nocal) 14 Jun 2014, 0:07:38 UTC 3,894 GigaFLOPS
Windows/x86 7.03 (opencl_ati_sah) 30 May 2013, 0:18:19 UTC 1,912 GigaFLOPS
Windows/x86

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With each crime and every kindness we birth our future.

And your authority for saying this comes from...where? Project devs? Mr. Anderson? No? I didn't think so. CPUs provide value to the project, whether you're willing to acknowledge the fact or not. Don't be in such a hurry to discount their contributions. You will not convince anyone that CPUs should/will not be used for S@H, so please let the thread die.

vision of the future...the kind of development that can't be stopped! ;)

Well, get both, you can use 8 cores then to feed the gpus and still have 10 cores left which will add nicely to your rac;-)

8-cores to feed GPU...how much does a king (980 for example) take from CPU? ;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

The question should be what would you gain.

Example.

2 years ago i did crunch on 7 of my 8 CPU cores and 2 instances on GPU.
That gave me ~ 15K RAC

Now i`m just using 4 of my 8 cores but running 3 instances on my GPU.
I usuall have ~24K with the same hardware running seti only.
Thats 9K difference.
Not to forget i run merely MB and since V7 its a cr reduction of ~ 15% per task.

Of course i`m using optimised apps at the edge.

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With each crime and every kindness we birth our future.