18,000 S@h-RAC - which GPU?


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Message boards : Number crunching : 18,000 S@h-RAC - which GPU?

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Profile [seti.international] Dirk Sadowski
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Message 1319529 - Posted: 24 Dec 2012, 5:17:11 UTC
Last modified: 24 Dec 2012, 5:32:18 UTC

My old GTX260 O/C have a ~ 18,000 S@h-RAC.

Which NVIDIA GTX6xx and AMD/ATI HD7xxx would reach the same S@h-RAC (only with S@h Enhanced WUs)?

(With WinXP 32bit. Other OS (Win7, 8) would give a speed up?)

Thanks.


* Best regards! :-) * Sutaru Tsureku, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *
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rob smith
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Message 1319575 - Posted: 24 Dec 2012, 8:47:35 UTC

A GTX660, or GTX670 should give you something like 18,000 without overclocking.
Moving to a 64bit OS can have variable results - don't do it unless there are other reasons for doing the move, such as having to run applications that will only run on Windows7/64 bit.
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Message 1319671 - Posted: 24 Dec 2012, 18:04:12 UTC

I'm running a GTX660. RAC is still climbing but it looks like it will settle around 28,000 to 30,0000. Using the x41xc Cuda 5.0 app at http://jgopt.org/download.html

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Message 1319717 - Posted: 24 Dec 2012, 21:15:01 UTC
Last modified: 24 Dec 2012, 21:15:25 UTC

As an indicator, a GTX670 has RAC, still rising after outage, of >20,300, at this moment in time.

OS, win7 64bit.

tbret
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Message 1319752 - Posted: 25 Dec 2012, 0:22:27 UTC - in response to Message 1319529.

My old GTX260 O/C have a ~ 18,000 S@h-RAC.

Which NVIDIA GTX6xx and AMD/ATI HD7xxx would reach the same S@h-RAC (only with S@h Enhanced WUs)?

(With WinXP 32bit. Other OS (Win7, 8) would give a speed up?)

Thanks.





My 660Tis are doing a little more than that (I can't tell for sure, but something in the low 20s is my best guess), so I'm guessing that a GTX 660 (no Ti) would give you approximately 20k RAC +/- 10%, running x41zc.

In my personal opinion, you would not want to go less than a GTX 660, anyway.
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Message 1319787 - Posted: 25 Dec 2012, 3:21:31 UTC
Last modified: 25 Dec 2012, 3:28:29 UTC

My 7970`s seem to be able to crunch over 20k rac if work supply is constant,
They are not over clocked, yet.
i still run out often because of limits and end up dooing E@H,
The main cruncher is @ #18 atm.
win7 64, luatics v0.40, ccc12.4,

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Message 1319877 - Posted: 25 Dec 2012, 14:58:52 UTC

My 6 core AMD computer with a Gigabyte GTX 670 (http://setiathome.berkeley.edu/show_host_detail.php?hostid=6721035) currently shows a RAC of nearly 27,000. Neither the processor nor the video card are overclocked. The 2GB GTX card runs three simultaneous SETI tasks. While the 6 AMD cores do run SETI tasks, the video card dominates the RAC score.

jravin
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Message 1319985 - Posted: 25 Dec 2012, 23:00:10 UTC - in response to Message 1319877.

My 6 core AMD computer with a Gigabyte GTX 670 (http://setiathome.berkeley.edu/show_host_detail.php?hostid=6721035) currently shows a RAC of nearly 27,000. Neither the processor nor the video card are overclocked. The 2GB GTX card runs three simultaneous SETI tasks. While the 6 AMD cores do run SETI tasks, the video card dominates the RAC score.


I would suggest you reserve at least 1 core of your 6 for GPU. My 6-core has 2 x GTX 460 running 2 WUs each and I reserve 2 cores for GPU. I find that when I go to even 5 cores for CPU processing, the (CPU time/elapsed time) for CPU WUs drops considerably (I'm getting a RAC of about 31K now on this machine), and I get less work done overall.
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Message 1320019 - Posted: 26 Dec 2012, 1:36:35 UTC - in response to Message 1319985.

My 6 core AMD computer with a Gigabyte GTX 670 (http://setiathome.berkeley.edu/show_host_detail.php?hostid=6721035) currently shows a RAC of nearly 27,000. Neither the processor nor the video card are overclocked. The 2GB GTX card runs three simultaneous SETI tasks. While the 6 AMD cores do run SETI tasks, the video card dominates the RAC score.


I would suggest you reserve at least 1 core of your 6 for GPU. My 6-core has 2 x GTX 460 running 2 WUs each and I reserve 2 cores for GPU. I find that when I go to even 5 cores for CPU processing, the (CPU time/elapsed time) for CPU WUs drops considerably (I'm getting a RAC of about 31K now on this machine), and I get less work done overall.

I agree, looking at the CPU loading on my quad with 3 CPU tasks running the total CPU loading is regularly over 90% signifying that feeding the GPU with two tasks and doing all the other background work uses ~60% of one CPU.

As this is my main computer I found doing 3 GPU tasks, which would be the option if it was a dedicated cruncher, made it unresponsive.

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Message 1320080 - Posted: 26 Dec 2012, 7:59:07 UTC - in response to Message 1319529.
Last modified: 26 Dec 2012, 8:05:34 UTC

Hi,

You may want to take look at this:
http://setiathome.berkeley.edu/show_host_detail.php?hostid=5643864

It runs Lunatics versions (AVX, V8, GPU) of both classic and astropulse.

Current RAC after the outage is little over 41000.

The CPU is an overclocked i7-3930K and has HT enabled, but Boinc is restricted to 50% of processors (6 out of 12).

The single Gf560Ti448 is running 3 tasks simultaneously.

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Message 1320215 - Posted: 26 Dec 2012, 22:49:36 UTC - in response to Message 1320080.

Hi,

You may want to take look at this:
http://setiathome.berkeley.edu/show_host_detail.php?hostid=5643864

It runs Lunatics versions (AVX, V8, GPU) of both classic and astropulse.

Current RAC after the outage is little over 41000.

The CPU is an overclocked i7-3930K and has HT enabled, but Boinc is restricted to 50% of processors (6 out of 12).

The single Gf560Ti448 is running 3 tasks simultaneously.

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Petri

And 24/7 too I'd imagine, not bad.
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Profile petri33
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Message 1320538 - Posted: 27 Dec 2012, 21:04:40 UTC - in response to Message 1320215.

24/7 yes,

How do you heat your house - oil?
-- No, computers...
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zoom314
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Message 1320547 - Posted: 27 Dec 2012, 21:25:16 UTC - in response to Message 1320538.
Last modified: 27 Dec 2012, 21:27:35 UTC

24/7 yes,

How do you heat your house - oil?
-- No, computers...

Natural Gas and the GTX590 equipped PC here...
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Profile dancer42
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Message 1320583 - Posted: 28 Dec 2012, 0:02:53 UTC
Last modified: 28 Dec 2012, 0:09:13 UTC

as for Oklahoma in the US the computers so far,

About 65 to 70 degrees.

though I had hoped the recent snow would have allowed a second cruncher.

hoping for about 120,000 RAC now that I can get AP.
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Message boards : Number crunching : 18,000 S@h-RAC - which GPU?

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