SETI RAC dropping
Posted: Tue May 23, 2006 2:11 pm
Hi all,
Some of you may have noticed our SETI RAC has been dropping.
There's always going to be more than one reason for this, but the one thing that can be said is that it *IS* affecting the entire SETI project - so it's not just our Team:
See here:
http://www.boincstats.com/stats/project ... php?pr=sah
(shows the reduced amount of total credit (per day - the third graph down)being granted to members of the SETI project)
and here:
http://teamseti.com/status/status.phtml
(shows the number of SETI WU's "in progress" has gone down by nearly 50% ! in the last few days)
As can be seen, since the switchover to Enhanced WU's only, many clients would by now have returned all (most?) of their cached v4.x work and are now working on the new v5.x WU's instead.
The net result:
1) v5.x usually take more processing and hence take more time to complete (and more chance of the work returned NOT being validated correctly, resulting in ZERO granted credit even though more time has been spent "crunching" it). So credits will take longer to be "granted" - but this is a minor blip until the "gap" can be made up.
2) Some hosts may be running the opti-application and crunchers have not updated their app_info.xml file to cope with the latest v5.15 aplication requirement - hence they can be busily downloading WU's but they are not being processed and are returning as "client errors".
3) Some hosts may now be retired from the project, as the time required to complete one WU is now far too great - I've seen a "To completion" time of 40+ hours for 1 WU, which beforehand took just 3 hours. I've certainly "retired" 2 PC's as they are not "man" enough to crunch a WU in a reasonable time - I did a couple of v5.x WU's and both errored and received ZERO credits after 10 hours of crunching each one (and this was using the "stock" application, not an opti..!)
(Edit: OK - now I've seen it all - I have a Celeron 667 MHz, which has been a great little cruncher for some time and I thought, to help the SETI RAC issue, I'll download a WU and see if it helps:
After 12 hours of crunching, it has completed 1.4% of the WU.....! So, by rights, that's a to completion time of 857 hours !! B*gger that - where's the abort button ! )
All of this leads to think that the SETI admins have made a bad decision concerning the cessation of supply of v4.x WU's.
regards,
Tim
Some of you may have noticed our SETI RAC has been dropping.
There's always going to be more than one reason for this, but the one thing that can be said is that it *IS* affecting the entire SETI project - so it's not just our Team:
See here:
http://www.boincstats.com/stats/project ... php?pr=sah
(shows the reduced amount of total credit (per day - the third graph down)being granted to members of the SETI project)
and here:
http://teamseti.com/status/status.phtml
(shows the number of SETI WU's "in progress" has gone down by nearly 50% ! in the last few days)
As can be seen, since the switchover to Enhanced WU's only, many clients would by now have returned all (most?) of their cached v4.x work and are now working on the new v5.x WU's instead.
The net result:
1) v5.x usually take more processing and hence take more time to complete (and more chance of the work returned NOT being validated correctly, resulting in ZERO granted credit even though more time has been spent "crunching" it). So credits will take longer to be "granted" - but this is a minor blip until the "gap" can be made up.
2) Some hosts may be running the opti-application and crunchers have not updated their app_info.xml file to cope with the latest v5.15 aplication requirement - hence they can be busily downloading WU's but they are not being processed and are returning as "client errors".
3) Some hosts may now be retired from the project, as the time required to complete one WU is now far too great - I've seen a "To completion" time of 40+ hours for 1 WU, which beforehand took just 3 hours. I've certainly "retired" 2 PC's as they are not "man" enough to crunch a WU in a reasonable time - I did a couple of v5.x WU's and both errored and received ZERO credits after 10 hours of crunching each one (and this was using the "stock" application, not an opti..!)
(Edit: OK - now I've seen it all - I have a Celeron 667 MHz, which has been a great little cruncher for some time and I thought, to help the SETI RAC issue, I'll download a WU and see if it helps:
After 12 hours of crunching, it has completed 1.4% of the WU.....! So, by rights, that's a to completion time of 857 hours !! B*gger that - where's the abort button ! )
All of this leads to think that the SETI admins have made a bad decision concerning the cessation of supply of v4.x WU's.
regards,
Tim