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  Thread: HCC1 BETA Comment thread

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TimAndHedy
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Re: HCC1 BETA Comment thread
These two work units are from completely different batches, so the variances between the images is what causes the runtime differences.


I just have not seen that kind of variation in speed among the work units. HCC is very consistent.
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Sekerob
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Re: HCC1 BETA Comment thread
Most of the projects follow kind of an order in which work was assembled so within current HCC production you'd not see much variation, but if you grab units wide apart from production, here in beta surely a divers set that has already passed the old app crunch, you'd see greater spread... so I've explained it to myself as what uplinger meant with his different batch observation.
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GIBA
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Re: HCC1 BETA Comment thread
With this beta I got my 1 year badge. I unchecked beta on my account since I reached my goal and I want others to have a chance at a badge. coffee


Brinktastee,
congratulations to reach this mark ! cool

One day in a far far future I hope get it too... laughing

good luck coffee
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Re: HCC1 BETA Comment thread
Brink congrats


It won´t me who gets that Beta badge for now

I have my ideas of who could be ..
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Re: HCC1 BETA Comment thread
What I see from the lonely Beta I received, on a P4-3.2GHz with HT on, it completed in roughly half the time (and half the points tongue) from the regular HCC 6.06:


BETA_ X0000076140171200610111700_ 0-- 	VaioWS 	Valid 	3/24/10 04:32:53 	3/24/10 16:25:14 	5.47 	44.8 / 41.3
X0000090510739200707131007_ 1-- 	VaioWS 	Valid 	3/18/10 15:31:01 	3/24/10 16:25:14 	10.50 	86.0 / 96.7
X0000090480295200707201421_ 1-- 	VaioWS 	Valid 	3/18/10 00:56:59 	3/23/10 23:41:33 	10.58 	86.6 / 77.4
X0000090470150200708102141_ 1-- 	VaioWS 	Valid 	3/17/10 18:51:38 	3/23/10 23:41:33 	10.74 	87.9 / 79.0
X0000090441377200707272145_ 0-- 	VaioWS 	Valid 	3/17/10 04:37:38 	3/23/10 06:05:21 	10.52 	86.1 / 86.5
X0000090421109200707272104_ 1-- 	VaioWS 	Valid 	3/16/10 17:59:51 	3/22/10 04:44:07 	10.46 	85.6 / 79.1
X0000090041299200707241310_ 0-- 	VaioWS 	Valid 	3/9/10 11:45:37 	3/14/10 02:33:50 	10.53 	86.9 / 84.3
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sk..
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Re: HCC1 BETA Comment thread
WRT this HCC Beta run, Durational WU Variation was very small for the two tasks I ran on the same system:

BETA_ X0000076080540200610061618_ 1-- Valid 24/03/10 01:33:25 24/03/10 10:13:43 2.35 35.8 / 40.2
BETA_ X0000076080966200610061612_ 0-- Valid 24/03/10 03:03:28 24/03/10 19:35:03 2.37 36.0 / 38.1

Only 2min difference in runtime.
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cubes
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Re: HCC1 BETA Comment thread
TimAndHedy,

Is there a plan to test old vs new methods for consistency?
64 Million in would be a bad time to change methods and get irregularities.


The output of the two methods should be bit-identical. Theoretically, and, as demonstrated in our lab, and confirmed now in the Alpha and Beta tests, in practice. Our lab has actually been running the optimized code in-house for a while now with no problems.

Thank you, Beta testers!

Christian Cumbaa
Research Associate, Ontario Cancer Institute
[Mar 25, 2010 9:48:29 PM]   Link   Report threatening or abusive post: please login first  Go to top 
cubes
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Re: HCC1 BETA Comment thread
JmBoullier,
So for me this is almost 3 times faster, which is not surprising since this is under Ubuntu 64 which had the infamous huge soft page fault problem and this problem has disappeared now!

Great to hear! The major optimization was to rearrange a calculation that allocated/deallocated multiple arrays per pass through an inner loop (called millions of times). Now the largest two arrays in the calculation have been factored-out, greatly reducing the memory-juggling. Our tests on a CentOS 64 platform showed a 2x improvement. I like your 3x results even more!

Christian A. Cumbaa
Research Associate, Ontario Cancer Institute
[Mar 25, 2010 10:06:32 PM]   Link   Report threatening or abusive post: please login first  Go to top 
TimAndHedy
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Re: HCC1 BETA Comment thread
Thank you, Beta testers!


Happy to support you, thank you for doing to research.

I hope we can all make a small difference.
[Mar 26, 2010 1:46:44 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: HCC1 BETA Comment thread
Here's a x-link to a message from the PI for the project, Dr. Jurisica:

http://www.worldcommunitygrid.org/forums/wcg/viewthread_thread,28753
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