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Computation Error With Optimized Apps
arkayn:
The key is this line.
--- Quote ---Found 30 single pulses and 30 repeating pulses, exiting.
--- End quote ---
As long as the wingmate finds the same thing, it should all be good.
Lysia:
--- Quote from: Quasar8000 on 16 Mar 2009, 05:03:41 am ---I got two WUs and they're already finished!!! Each of them showed an expected CPU time of about 290 hours but one finished in a little over 3 minutes and the other in a little over 6 minutes.
--- End quote ---
I'm using the SSE3-App and need about 25-30 hours for one WU. I still wonder if the calculations are correct, as performance gain of the optimized app is about 4 times (roughly estimated), compared with the default app.
All your WUs seem to have the same result, there is definitely something wrong.
sunu:
--- Quote from: Lysius on 18 Mar 2009, 07:24:07 pm ---I'm using the SSE3-App and need about 25-30 hours for one WU. I still wonder if the calculations are correct, as performance gain of the optimized app is about 4 times (roughly estimated), compared with the default app.
--- End quote ---
That's why they are called "optimized" apps. That are waaayyy faster than stock apps. Don't worry, science done is the same.
--- Quote from: Lysius on 18 Mar 2009, 07:24:07 pm ---All your WUs seem to have the same result, there is definitely something wrong.
--- End quote ---
Definitely there is something wrong with his computer.
@Quasar8000: Is your PC overclocked? RAM checked ok?
Lysia:
I have recently had a AP-WU marked as invalid (http://setiathome.berkeley.edu/workunit.php?wuid=417591258). I used the SSE2-app on my notebook (http://setiathome.berkeley.edu/show_host_detail.php?hostid=4851459). This WU took 46 hours to compute while a second WU (http://setiathome.berkeley.edu/workunit.php?wuid=417591604) is at 60:48:00 with 73.25% done =>83 hours total. A third WU running at the moment seems to be taking about 45 hours again. Will see what the results of these two are, but there might be a slight problem with the SSE2-AP.
I still have to do a memtest though, but the last time about two months ago everything was correct.
EDIT: The third WU (http://setiathome.berkeley.edu/workunit.php?wuid=417924453) finished after 16 hours with "30 single pulses and 30 repeating pulses". There is definitely something wrong.
sunu:
That could be a random thing. Watch this machine for a few more WUs and report back.
Edit:
--- Quote from: Lysius on 27 Mar 2009, 08:01:37 am ---EDIT: The third WU (http://setiathome.berkeley.edu/workunit.php?wuid=417924453) finished after 16 hours with "30 single pulses and 30 repeating pulses". There is definitely something wrong.
--- End quote ---
No, right now, it doesn't mean anything. We have to wait for another wingman to return his result to see if your result is good or no. Nevertheless if you want to test the stability of your machine run prime95 ( http://www.mersenne.org/freesoft ) for at least 8h (some like to run at least 24h).
Edit2: T2300 should support sse3. You can gain a slight increase in computation speed switching from sse2 to sse3 app.
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