Questions and Answers : Windows : Boinc/sixtrack failure to correctly allocate multitasking of WUs
Message board moderation

To post messages, you must log in.

AuthorMessage

Send message
Joined: 25 Oct 04
Posts: 27
Credit: 1,205
RAC: 0
Message 4649 - Posted: 30 Oct 2004, 11:08:47 UTC

Bonic 4.09 / sixtrack 4.47 lockup

When there is low work and only 1 work unit being processed (rather than the usually 2) Bonic / sixtrack locks up

It has done this a number of times causing the loss of 1 wu so far

As it�s a multiprocessor system with 4 available CPU�s the option is set for sixtrack to use 2 of these

I�ve been observing the situation and its consistent , as soon as 1 of the last 2 units are processed the cpu time remains the same usual 50% but further study shows that the o/s time shows a marked increase when only 1 wu is being processed
Feel that boinc/sixtrack is failing to resolve the fact that just one of the 2 available slots have work and is trying to start the other process without any causing the error

A similar problem also occurs if the computer is restarted when your server is down as it cannot get the preferences from the site

I�m not able to determine if it�s a problem with boinc or sixtrack though

Other than this it works fine

o/s is windows 2003 enterprise server
cpu type 2 * Intel xeon 2 Ghz
no other boinc project�s being processed

Dave

ID: 4649 · Report as offensive     Reply Quote
Profile Thierry Van Driessche
Avatar

Send message
Joined: 1 Sep 04
Posts: 157
Credit: 82,604
RAC: 0
Message 4650 - Posted: 30 Oct 2004, 11:24:52 UTC
Last modified: 30 Oct 2004, 11:25:59 UTC

With Boinc v4.09 used on a HT PC and the last WU is crunched, Boinc eats 50% of CPU power.
This problem has been fixed with Boinc v4.13. You can download that version here.

LHC works fine with that version.




Greetings from Belgium
ID: 4650 · Report as offensive     Reply Quote

Send message
Joined: 25 Oct 04
Posts: 27
Credit: 1,205
RAC: 0
Message 4654 - Posted: 30 Oct 2004, 13:35:45 UTC


i was previously using 4.13 on seti but had problems with it
in that it was stoping other apps starting up or letting them start but real slow

trying it again

it appears to be ok at the moment on lhc

time will see ....

Dave


ID: 4654 · Report as offensive     Reply Quote
Mikie Tim T

Send message
Joined: 28 Sep 04
Posts: 8
Credit: 8,620
RAC: 0
Message 4745 - Posted: 1 Nov 2004, 16:05:57 UTC - in response to Message 4650.  

> With Boinc v4.09 used on a HT PC and the last WU is crunched, Boinc eats 50%
> of CPU power.
> This problem has been fixed with Boinc v4.13. You can download that version <a> href="http://setiweb.ssl.berkeley.edu/download.php">here[/url].
>
> LHC works fine with that version.

I have also experienced this in the past when I was down to a single workunit, but on a 2-processor system, so it wasn't just specific to HT processors. I haven't had any issues with this occurring since 4.13, but I also have made sure that I always have enough work across CPDN, Seti, and LHC to keep both busy at all times.
ID: 4745 · Report as offensive     Reply Quote
Profile Trane Francks

Send message
Joined: 18 Sep 04
Posts: 71
Credit: 28,399
RAC: 0
Message 4786 - Posted: 1 Nov 2004, 22:14:28 UTC

The full-load-on-idle-CPU-core issue is solved in 4.13.
ID: 4786 · Report as offensive     Reply Quote

Questions and Answers : Windows : Boinc/sixtrack failure to correctly allocate multitasking of WUs


©2023 CERN