Help Understanding RAC & Improving Mine


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Message boards : Number crunching : Help Understanding RAC & Improving Mine

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caprica_6
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Message 1297912 - Posted: 22 Oct 2012, 16:56:26 UTC
Last modified: 22 Oct 2012, 16:58:29 UTC

I'm hoping to get a better understanding on how a lot of other users have RAC in the 100,000s--while I am in the 200-300 range.

I am running this on a couple year old laptop (not 24/7), with the below specs:

GenuineIntel
Intel(R) Core(TM) i7 CPU Q 720 @ 1.60GHz [Family 6 Model 30 Stepping 5]
(8 processors) NVIDIA GeForce GT 230M (1024MB) driver: 306.97

Here's a summary of the projects I am working on:

http://allprojectstats.com/showuser.php?projekt=0&id=1522021

I know some folks have multiple computers running all day, but it just seems like the RAC is so far above mine. I've been thinking of looking into the optimized version of BOINC, but haven't gone down that road yet. I've searched the forum, but if I missed a thread, please forgive me and point me in the right direction.

Would greatly appreciate any insight and tips. For science!
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Profile Tron
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Message 1297937 - Posted: 22 Oct 2012, 18:03:03 UTC - in response to Message 1297912.
Last modified: 22 Oct 2012, 18:08:20 UTC

These users with high RAC are running tasks on graphics card/s
A gpu can complete an astounding level of work beyond the cpu in a computer, due to the nature of it's design.
I see your laptop is doing tasks on it's graphics card , however is is not doing much work im my opinion, i wonder if it's over heating and throttling down or something

The 100k RAC's you see are folks running multiple graphics cards in some cases as many as 8

bill
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Message 1297953 - Posted: 22 Oct 2012, 19:17:47 UTC - in response to Message 1297937.

These users with high RAC are running tasks on graphics card/s
A gpu can complete an astounding level of work beyond the cpu in a computer, due to the nature of it's design.
I see your laptop is doing tasks on it's graphics card , however is is not doing much work im my opinion, i wonder if it's over heating and throttling down or something

The 100k RAC's you see are folks running multiple graphics cards in some cases as many as 8


I suspect it's a laptop that's only turned on for a few hours a day and set to not allow Boinc to process work if on battery or if other work useage is higher than 25%.

caprica_6
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Message 1297964 - Posted: 22 Oct 2012, 20:21:26 UTC - in response to Message 1297937.

Ah, that could be it. I have noticed it is pulling a lot less GPU tasks. I think the fan filter is due for a cleaning. Thank you!
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Profile Slavac
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Message 1297983 - Posted: 22 Oct 2012, 21:38:45 UTC - in response to Message 1297964.

Ah, that could be it. I have noticed it is pulling a lot less GPU tasks. I think the fan filter is due for a cleaning. Thank you!


The best way is to build a desktop machine, add a 1000W+ PSU and a MOBO that can handle 2-3 GPU's. Then populate the machine with those 2-3 GPU's (480's, 560's and higher are the most popular).

I'll catch flak for this, but your CPU doesn't really matter that much in the grand scheme of things when you're dealing with GPU computing. Both AMD and Intel make some very powerful CPU's that are quite affordable.

It all boils down to how many numbers your PC can crunch in a set amount of time.
____________


Executive Director GPU Users Group Inc. -
brad@gpuug.org

Josef W. SegurProject donor
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Message 1298061 - Posted: 23 Oct 2012, 2:32:31 UTC - in response to Message 1297912.

I'm hoping to get a better understanding on how a lot of other users have RAC in the 100,000s--while I am in the 200-300 range.

I am running this on a couple year old laptop (not 24/7), with the below specs:

GenuineIntel
Intel(R) Core(TM) i7 CPU Q 720 @ 1.60GHz [Family 6 Model 30 Stepping 5]
(8 processors) NVIDIA GeForce GT 230M (1024MB) driver: 306.97

Here's a summary of the projects I am working on:

http://allprojectstats.com/showuser.php?projekt=0&id=1522021

I don't know much about the other projects, but will assume they give credit similar to SaH. The combined RAC of 329.41 shown is about what a host averaging 3 midrange SaH tasks per day (21 per week) would have. Based on the "Average processing rate" (APR) values from http://setiathome.berkeley.edu/host_app_versions.php?hostid=5330289, full crunching with 8 CPU cores and the GPU would get 21 tasks done in about 14 hours. I put that on a weekly basis on the assumption the usage may vary on weekends.

Those APR values show the 8 CPU cores together at about 39 GFLOPS, the GPU at 29 GFLOPS. But the CUDA (6.08) and CUDA23 (6.09) APRs are about the same, an indication of a known problem where both apps end up using the same cudart.dll and cufft.dll files, and IIRC it's the slower (earlier) ones. My guess is that CUDA23 processing would be considerably faster with the right files, but I don't know if anyone has found a way to avoid the problem while running stock on a 2xx CUDA card.
Joe

Ianab
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Message 1298296 - Posted: 24 Oct 2012, 1:41:28 UTC

Just looking at your PC's results, ALL the work units returned have been CUDA ones, nothing from the CPU at all?

As the CUD card is not a powerful one, while the CPU is a reasonably grunty I7, you need to check why you aren't doing CPU work. Just a guess but the I7 might do 2 or 3 times the work, while still feeding the CUDA card. So make sure that your preferences say to use CPU as well as GPU.

Second thing to look at is the Optimised Apps. See the sticky thread at the top of this board, go and check out the Lunatics site, and get the better apps. Easy enough to install, only catch is that if the project updates the program, you need to go and update the Apps manually, it's not automatic like the standard apps are. This might boost RAC by 50-100%? Ask if you have any problems, someone will help you out.

Clean up the cooling fans for sure, running everything at 100% is going ot make some heat, and laptops aren't known for their cooling.

You are never going to get 10,000+ out of any laptop that stays cool enough to sit on your lap, but you should be able to get several thousand out of that unit, even if it's not running 24/7. The really high RAC are some big beasts, multiple high end CUDA cards. They double as space heaters with the amount of power they use, and hence heat they throw out.

Ian

Profile James SotherdenProject donor
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Message 1298399 - Posted: 24 Oct 2012, 12:49:28 UTC

Lunatics has nothing to download as they are currently on hold due to leagl Issues. So Its stock apps for now.
____________

Old James

Message boards : Number crunching : Help Understanding RAC & Improving Mine

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