Message boards :
Number crunching :
Processing Time Question
Message board moderation
Author | Message |
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JAKware Send message Joined: 28 Nov 99 Posts: 8 Credit: 6,833,950 RAC: 0 |
I am running Seti@Boinc on an older laptop Compaq Intel Mobile 233 64meg (I know small machine). The issue is this; When it starts working on a WU it goes along very fast, then it starts moving slower. Yesterday I downloaded a new WU and it took about 1.5 hours to get to 51%. In the 17 hours since then it has only progressed 20%. By the time I get done with a work unit it has taken abouit 60 hours. I have even tried re-booting to see if this helps, nothing. Keep in mind that this happens on EVERY work unit. Any ideas why crunching is so fast then gets progessively slower? Thank you. > |
Astro Send message Joined: 16 Apr 02 Posts: 8026 Credit: 600,015 RAC: 0 |
I don't know why this happens. My AMD athlonXP took a WU to 60% in 3 minutes then slowed down to taking the full, normal 6 hours. |
Mike Send message Joined: 17 Feb 01 Posts: 34258 Credit: 79,922,639 RAC: 80 |
Hi This is a calculation error in seti client. It will be fixed later, because its an cosmetic issue. greetz Mike |
Paul D. Buck Send message Joined: 19 Jul 00 Posts: 3898 Credit: 1,158,042 RAC: 0 |
My understanding of the rumor control word is that part of what was done with 4.09 was intended to address this issue. Note, I did not ssay it fixed it, but it should be a little better with 4.09 (note: rumor control can get it wrong). Just think of it as a gas gague in a car. None of them are linear. After you buy a car you have to drive it for awhile before you know if 1/4 tank is 1/4 of a tank or really 1/2 or 1/2204 left. You know the kind, when it hist 1/4 take you had better be pulling into the station for gas... <p> For BOINC Documentaion: Click Me! |
Keck_Komputers Send message Joined: 4 Jul 99 Posts: 1575 Credit: 4,152,111 RAC: 1 |
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FalconFly Send message Joined: 5 Oct 99 Posts: 394 Credit: 18,053,892 RAC: 0 |
The old SETI Client also had (depending on Angle Range) a similar behaviour. e.g. on VLAR Workunits, I saw it zooming through the first ~8% at light speed, afterwards constant progress far below that. On normal AR Workunits, first ~7.5% above average speed, ~7.5% to ~78% normal speed, and then accelerating again beyond ~78%. (all observed on Win32 Clients) Looking at the Graphics during the first ~60% should show exactly what it does, I reckon it's doing all the (very fast) Pulse/Triplet search, after that it switches to the (intensive and relatively slow) FFT calculations including the best Gaussian shaping. ___________________________________________ <p>Scientific Network : 36200 MHz «» 8204 MB «» 815.0 GB </p> |
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