Crazy big credits granted for small work units?
28 Jul 2013 1:17:51 UTC
Topic 197092
(moderation:
I'm not one to keep tabs on credits (this is volunteer science after all.) I usually just let the computers run day and night and occasionally check to see all is well. But I've been keeping an eye on the two new computers for the past few days since I've never run wus on GPUs before. Noticed the first five which had 19 to 42 or so claimed credits were each awarded 3,333 credits.
http://einsteinathome.org/task/394311502
It was a big deal to hit that first million credits but if the second is reached quickly by ridiculously high credit awards, it just won't be the same.
Wayne
Crazy big credits granted for small work units?
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That is not a small work unit. For GPU work you need to look at the elapsed time, as the reported CPU time is just the work performed by the support task that runs on the CPU.
I think the basis of your belief that this is crazy high is the ratio to "claimed". Hear this: claimed credit on Einstein bears a very weak relationship to anything of real interest.
Welcome to GPU computing. When these things meet a problem that is somewhat suited to their particular capabilities, driven by code which maps their rather odd facilities reasonably efficiently onto the problem at hand, they really are immensely productive.
On the other hand, don't try to run the COBOL for your legacy payroll application, or even a directly converted FORTRAN code from the 60s, and expect to see anything like this performance advantage.
Thanks for the clarification.
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Thanks for the clarification. I've been running antiques for so long that I'm used to only seeing small credits. Last week I bought a new work station and laptop, both with quad processors and GPU capability.
I knew I'd be completing a lot more work than before, but had no idea how much more. By way of comparison, I started crunching 6 days after you and my antique single processor Pentiums hit the first million just a few months ago.
Good to know all is well.
Wayne