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Added stat to the My Grid | Device Statistics

I run a dedicated pool of recycled computers (http://refuse4research.org). The size of the pool is determined by how much power I have available. I have many more computers than I can power up, but how to determine which ones to power up? Currently I am rating the computers by using the internal benchmarks provided by the BOINC client. However, I am unsure that these benchmarks actually correlate with the results returned over a period of time.

My suggestion is to add to the Device Statistics page a column that shows the average number of results returned per day (or week or month, what ever period is deemed best) so that I can sort the devices by their capability and thus be sure to have the best machines powered up.

Thanks!!
[Feb 2, 2010 1:08:31 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: Added stat to the My Grid | Device Statistics

The benchmarks indeed do not fully reflect the actual throughput, but if you take the Whetstone and Dhrystone separately, they are a fair indicator, if same client and same OS bit... speak all 32 bits windows for instance.

The "Results" measure is if you mean the number of completed tasks very dubious simply because none have the exact same load of fpops/ints to compute... very non-deterministic. You'd have to set up an extensive testing program and let them run each for a longer time on a project-by-project basis to find what's best.

Generally for multi-core devices I find that mixing tasks, that will not be competing for the exact same CPU function gives an on-average better result. The other is that the lighter devices have a harder time to compute HPF2 and FAAH/HFCC.

Averages, yes, I'd like to see them too... sliding 7-14 days, not the ad-infinitum as what we get on the My Grid front page.

Now for the quick fix: Get BOINCTasks which can monitor all devices on your LAN. It tracks completed tasks up to 365 days, i.e. a result history with CPU time / Wallclock Time, but not credit of course. You can choose any device and sort the different info columns. Not tried, but I'm sure you can dump that information to a spread sheet for all sorts of fancy analysis. Asking for a feature on the website is asking for something that takes many months to plan in, if considered useful.
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[Edit 1 times, last edit by Sekerob at Feb 2, 2010 2:21:17 PM]
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Re: Added stat to the My Grid | Device Statistics

Thanks for the suggestions, I'll give BOINCTasks a go and see how that works. Anything that will help me tell which ones are my worst performers so that I can replace them with newer junk when it comes available.

As for the results returned being different by project, if I sign up for all the projects will I get a random set of them over time? In other words, if over a week or two all comps are requesting all projects, wouldn’t their results be all weighted the same? I understand that the comparison between #3 and #4 might be useless, but if I could be sure that the 5 lowest ranked machines were in fact the ones I should upgrade, that is what I really need.

Thanks again!
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[Edit 1 times, last edit by refuse4research at Feb 3, 2010 8:57:06 PM]
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Hypernova
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Re: Added stat to the My Grid | Device Statistics

I run a dedicated pool of recycled computers (http://refuse4research.org). The size of the pool is determined by how much power I have available. I have many more computers than I can power up, but how to determine which ones to power up?


First I would like to congratulate applause applause applause you about this concept and this initiative. Excellent idea to breathe a new life into old machines that can do useful work instead of polluting the environment.

What do you mean by "how much power is available". Do yo mean in term of watts, so it is a technical limitation, or do you mean in terms of energy cost and then it is a financial limitation. confused
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[Feb 15, 2010 11:25:59 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: Added stat to the My Grid | Device Statistics

Thanks for the suggestions, I'll give BOINCTasks a go and see how that works. Anything that will help me tell which ones are my worst performers so that I can replace them with newer junk when it comes available.

As for the results returned being different by project, if I sign up for all the projects will I get a random set of them over time? In other words, if over a week or two all comps are requesting all projects, wouldn’t their results be all weighted the same? I understand that the comparison between #3 and #4 might be useless, but if I could be sure that the 5 lowest ranked machines were in fact the ones I should upgrade, that is what I really need.

Thanks again!

Sorry, missed your follow up post entirely.

Work provision is quasi random. The techs are continuously weighting the projects because the run times over a period vary. Also because there are x-clusive science crunchers, such as those doing for instance only FAAH or HFCC or HCMD2, that what is remaining for the general pool is never in balance... you get a mix of the remainder so to speak, meaning, if there is a rush to get a piece of the 16.7% each project is allowed on average (6 active projects times 16.7 % is 100%), there might be little to none left for those multi-science crunchers. Of course, if there is short supply of one or the other science from the researchers side, the shares go all off the bandwidth. I've tried to animate this in a bubble chart posted here: http://www.worldcommunitygrid.org/forums/wcg/...28320_lastpage,yes#267409

This 16.7 percent changes when new project come on board or drop off. Generally the techs try to tune the science shares evenly in the overall, when there is enough work for each and no technical constraints.
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[Feb 15, 2010 11:45:40 AM]   Link   Report threatening or abusive post: please login first  Go to top 
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