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Old 18th June, 2004, 03:20 PM
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P4 Production is down

Looking at my stats the past week, I noticed quite a bit of bumpiness. Knowing that most of my rigs have not failed, I tried to find a solution. Early in the week, some big point tinkers were released... OK, so machines would get clogged up for a day or so and not be able to score quickly. That explains the drop, but I should have gotten a big rebound a day or 2 later.... Didn't happen.

Then I spreadsheeted out the points and frame times of the tinkers and gromacs, on my P4's and AMD boxes... The results surprised me. Even tho the benchmark machine is a P4, my P4's were much worse at scoring tinkers than gromacs, especially the HT machine... Oddly, my AMD boxes scored almost the same points per day on both tinkers and gromacs.

My guess is that Hyperthreading is very good at crunching 2 gromacs WUs, but not nearly as efficient at tinkers WUs. The bench machine is a 2.8 P4 w/ HT turned off.
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Old 18th June, 2004, 04:23 PM
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i am running 2 amd's and one p4(with HT Disabled in bios)...
the p4 hates tinkers...
i tried adding another stick of mem to it to see if it would help(256 up to 512) and no diff.
the p4 chews through gromacs and gromac2 runs no prob..actually way way faster than my overclocked amd. i can count on at least 2 WU/day by the p4.....to the point that i turn off the p4 at night so the amd might have a chance to catch up.


amd # one is in my sig
#2 is 2400+ 1 gig333mhz ram
p4 is 2.4 256mb ram

p4 still faster @ gromacs than amd #1
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Old 18th June, 2004, 06:33 PM
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The HT on the P4 is still key... By running a second folder on the rig with HT turned on, your production should go up 50% on the same machine... each folder will only be a little slower than if there was only 1 running.
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Old 18th June, 2004, 08:20 PM
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i know this, but cannot enable it in bios..option is greyed out...just an ibm board. on my way to pick up a 9800 pro and possibly a new board too...
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