[Halld-offline] [Fwd: Re: [GlueX] computing power required]

[David Lawrence]

FYI for anyone who didn't get this.

-Dave

-------- Original Message --------
Subject: 	Re: [GlueX] computing power required
Date: 	Thu, 8 Oct 2009 21:16:44 -0400
From: 	Graham Heyes <heyes at jlab.org>
To: 	Blake Leverington <leverinb at uregina.ca>
CC: 	HallD Software Group <halld-offline at jlab.org>, "halld-mc at jlab.org" 
<halld-mc at jlab.org>, GlueX Collaboration <collaboration at gluex.org>
References: 	<4ACE63FD.9010505 at uregina.ca>



Blake,
	I am the computing coordinator for Physics division at JLab. What  
performance of CPU gives you 1.5 seconds per event? I am concerned  
because the numbers I have for GLUEX simulation are much less than a  
second per event and I need to calculate the computing requirements  
for 2012 through 2015. If the seconds per event is out be an order of  
magnitude it's a big deal.  On the other hand if you are benchmarking  
on slow machines then I may be able to help. I have just got funding  
to add another 34 compute nodes to the JLab cluster. This doesn't  
sound like a lot but each node will be powerful enough to run 20  
analysis jobs. So that's 680 more parallel jobs. The current cluster  
runs about 1200 parallel jobs.

	Regards,
		Graham Heyes


On Oct 8, 2009, at 6:13 pm, Blake Leverington wrote:

> Hi everyone,
>
> I am attempting to simulate a week's worth of experimental runtime,
> which means a background data set and whatever signal I might come up
> with. What this works out to is 5.5x10^7 events (after copious
> filtering) that I need to run through HDGEANT and my analysis. At an
> average of 1.5 seconds to simulate and analyze each event, this works
> out to about 1000 days of CPU time. Now, since I would like to  
> finish my
> PhD long before then, I was wondering if anyone had a spare computing
> cluster or 10 that I could use for a week or more to cut my  
> simulations
> down to a reasonable time. Including repeats for crashes, errors,  
> bugs, etc.
>
> Anyone have anything available?
>
> Cheers,
> -Blake Leverington
> _______________________________________________
> GlueX mailing list
> GlueX at dustbunny.physics.indiana.edu
> http://dustbunny.physics.indiana.edu/mailman/listinfo/gluex

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 David Lawrence Ph.D.
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