Forum > Linux
Computation Error With Optimized Apps
sunu:
Lysius, what tests did you run? small ffts, large ffts, blend?.
Let this machine do a few more WUs and we'll see how it goes. Also, as we've said earlier you can switch to a SSE3 app.
Lysia:
--- Quote from: sunu on 29 Mar 2009, 10:57:54 pm ---Lysius, what tests did you run? small ffts, large ffts, blend?.
--- End quote ---
Blend ran for 20 hours, large ffts runs for 10 hours now without an error. I think I will do small ffts next.
EDIT:
I'm running http://setiathome.berkeley.edu/workunit.php?wuid=417924453 now an my Desktop PC with the SSE2 and the SSE3 AP.
I guess pulse.out is what would be send to the server. I have attached these for both apps (after 40 minutes of running). The SSE3-app doesn't seem to have found anything by now, the SSE2-app found 30 pulses already (almost immediately after start).
EDIT2: I have downloaded the app from http://calbe.dw70.de/linux32.html in case that matters. The link at http://lunatics.kwsn.net/optimized-applications-release-news/optimized-astropulsev5-5-03-r112-for-linux-osx-transitional-package.msg15103.html;topicseen#msg15103 does not work.
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sunu:
I don't think we can compare the two results in the middle of computation. Wait for them to end and then we can compare the results.
Yes, the Linux 32 bit AstroPulse_v5 5.03_SSE2 + 5.00 (INTEL/AMD) (transitional package) link is broken.
Josef W. Segur:
--- Quote from: Lysius on 30 Mar 2009, 05:24:23 am ---...
EDIT:
I'm running http://setiathome.berkeley.edu/workunit.php?wuid=417924453 now an my Desktop PC with the SSE2 and the SSE3 AP.
I guess pulse.out is what would be send to the server. I have attached these for both apps (after 40 minutes of running). The SSE3-app doesn't seem to have found anything by now, the SSE2-app found 30 pulses already (almost immediately after start).
...
--- End quote ---
The 30 single pulses found by the SSE2 app are all at DM 911 and less. The app starts at DM 896 and goes to 15103, so if the SSE3 app hasn't found any and has run at least 1% of the work, it's clear the results won't match.
Lysius, would you upload that WU as an attachment here? Archive it with Zip, 7Zip, or RAR so it has an acceptable extension, not that it will compress much. I think the evidence indicates there's a flaw in the SSE2 app, having a WU which demonstrates the flaw would help.
Joe
Lysia:
The SSE3-App now has found something at DM 7023.
I have attached the WU.
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