Forum > GPU crunching

GPU/CPU performance dependence from AR value

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Raistmer:

--- Quote from: Richard Haselgrove on 19 Apr 2009, 02:39:28 pm ---Fred's script just replaces "608" with "603" in both the <workunit> and <result> sections (matching ones, of course), and deletes the <plan_class>cuda</plan_class> line completely - making it look exactly like a 603 directly allocated to the CPU by the server. That seems the simplest solution: but I'm intrigued by Josef's suggestion. That might be worth a look.

--- End quote ---
Yes, mine too.
But it can do CPU->GPU move too.
Beta version in testing.

BOINC can be stopped by "boinccmd --quit "/net stop boinc and restarted after patching via start/net start boinc

Raistmer:

--- Quote from: Richard Haselgrove on 19 Apr 2009, 04:25:38 pm ---
Identify a WU for re-branding by <rsc_fpops_est> - this is a VHAR

--- End quote ---
How AR can be matched with this field value?
Any table or formula exist?

Richard Haselgrove:

--- Quote from: Richard Haselgrove on 19 Apr 2009, 04:25:38 pm ---Identify a WU for re-branding by <rsc_fpops_est> - this is a VHAR

--- End quote ---


--- Quote from: Raistmer on 19 Apr 2009, 04:28:38 pm ---How AR can be matched with this field value?
Any table or formula exist?
--- End quote ---

That's why I said earlier that the 'V' cases are easy - 80360000000000.000000 is a VLAR (true VLAR - AR<0.05) and 23780000000000.000000 is a VHAR.

For the formula in between, ask Josef, and remind him of http://setiathome.berkeley.edu/forum_thread.php?id=44178&nowrap=true#698744 - there will be a linear scaling factor to the formula in that post. But note that the formula will not be single-valued in converting from fpops to AR - any intermediate value could be on either of the curves.

Raistmer:
I see. Will stay with rebranding script for now then.
Running once per 1-2 days it can increase net host performance IMHO.
~50% of task speedup for VHAR and even more for VLAR and no need to kill task - enough advantages for next step to perfection ;)

Richard Haselgrove:
I've split Fred's script into an information-only part (which can run while BOINC is active), and an action part which shuts down BOINC, does the necessary, and restarts BOINC.

When I get to within 50 CUDA tasks of the first one I want to re-brand, the default button switches from 'No' to 'Yes', and the action script runs automatically unless I intervene to stop it.

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