WUs taking 25- 50 hours: Is this normal?

Message boards : Number crunching : WUs taking 25- 50 hours: Is this normal?

To post messages, you must log in.

AuthorMessage
DavidVR

Send message
Joined: 3 Nov 10
Posts: 3
Credit: 578,276
RAC: 0
Message 70916 - Posted: 5 Aug 2011, 4:53:33 UTC

The Rosetta Mini 3.14 WUs are taking several days to complete on a 2.5 GHz C2Q Q8300 CPU. I haven't crunched Rosetta in awhile, and last time I did the WUs were 3- 4 hours. Are such long completion times typical?
ID: 70916 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
mikey
Avatar

Send message
Joined: 5 Jan 06
Posts: 1896
Credit: 9,954,441
RAC: 25,496
Message 70918 - Posted: 5 Aug 2011, 11:34:41 UTC - in response to Message 70916.  

The Rosetta Mini 3.14 WUs are taking several days to complete on a 2.5 GHz C2Q Q8300 CPU. I haven't crunched Rosetta in awhile, and last time I did the WUs were 3- 4 hours. Are such long completion times typical?


It is probably using the default settings and they are not always optimal for us crunchers. Go into the Boinc Manager and then Advanced, Preferences and click on the 1st tab called 'processor usage'. In there you will find a line that says: "While processor usage is less than [__] percent (0 means no restriction" Put a zero in the box and then click ok at the bottom of the page. This will prevent your crunching from stopping when your cpu is 'busy' doing other stuff. If you use your pc for other stuff experiment with the number until the pc is okay at both. Next on the last tab, disk and memory usage, go to where is stays "tasks checkpoint to disk at most every __ seconds", the default here is 60 seconds and that is quite often. I have mine set to 900 seconds, or 15 minutes, and should be okay as long as your pc doesn't crash more often than that! Next on that same tab but further down under memory usage it says "Use at most __% when computer is in use." I have mine set to 85 and the line below it to 90, all of my computers work just fine with no work stoppages.

I think your problem is the other project you are working on is taking away the crunching time making the Rosetta units take a long time. The above changes should help some.
ID: 70918 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
DavidVR

Send message
Joined: 3 Nov 10
Posts: 3
Credit: 578,276
RAC: 0
Message 70945 - Posted: 7 Aug 2011, 7:07:55 UTC - in response to Message 70918.  

The Rosetta Mini 3.14 WUs are taking several days to complete on a 2.5 GHz C2Q Q8300 CPU. I haven't crunched Rosetta in awhile, and last time I did the WUs were 3- 4 hours. Are such long completion times typical?


It is probably using the default settings and they are not always optimal for us crunchers. Go into the Boinc Manager and then Advanced, Preferences and click on the 1st tab called 'processor usage'. In there you will find a line that says: "While processor usage is less than [__] percent (0 means no restriction" Put a zero in the box and then click ok at the bottom of the page. This will prevent your crunching from stopping when your cpu is 'busy' doing other stuff. If you use your pc for other stuff experiment with the number until the pc is okay at both. Next on the last tab, disk and memory usage, go to where is stays "tasks checkpoint to disk at most every __ seconds", the default here is 60 seconds and that is quite often. I have mine set to 900 seconds, or 15 minutes, and should be okay as long as your pc doesn't crash more often than that! Next on that same tab but further down under memory usage it says "Use at most __% when computer is in use." I have mine set to 85 and the line below it to 90, all of my computers work just fine with no work stoppages.

I think your problem is the other project you are working on is taking away the crunching time making the Rosetta units take a long time. The above changes should help some.


I made the changes you suggested. I also crunch WCG and Collatz so that could be it. Thank you for your help.
ID: 70945 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
mikey
Avatar

Send message
Joined: 5 Jan 06
Posts: 1896
Credit: 9,954,441
RAC: 25,496
Message 70946 - Posted: 7 Aug 2011, 11:58:23 UTC - in response to Message 70945.  

The Rosetta Mini 3.14 WUs are taking several days to complete on a 2.5 GHz C2Q Q8300 CPU. I haven't crunched Rosetta in awhile, and last time I did the WUs were 3- 4 hours. Are such long completion times typical?


It is probably using the default settings and they are not always optimal for us crunchers. Go into the Boinc Manager and then Advanced, Preferences and click on the 1st tab called 'processor usage'. In there you will find a line that says: "While processor usage is less than [__] percent (0 means no restriction" Put a zero in the box and then click ok at the bottom of the page. This will prevent your crunching from stopping when your cpu is 'busy' doing other stuff. If you use your pc for other stuff experiment with the number until the pc is okay at both. Next on the last tab, disk and memory usage, go to where is stays "tasks checkpoint to disk at most every __ seconds", the default here is 60 seconds and that is quite often. I have mine set to 900 seconds, or 15 minutes, and should be okay as long as your pc doesn't crash more often than that! Next on that same tab but further down under memory usage it says "Use at most __% when computer is in use." I have mine set to 85 and the line below it to 90, all of my computers work just fine with no work stoppages.

I think your problem is the other project you are working on is taking away the crunching time making the Rosetta units take a long time. The above changes should help some.


I made the changes you suggested. I also crunch WCG and Collatz so that could be it. Thank you for your help.


No problem, please report back if it didn't help!
ID: 70946 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Mod.Sense
Volunteer moderator

Send message
Joined: 22 Aug 06
Posts: 4018
Credit: 0
RAC: 0
Message 70954 - Posted: 7 Aug 2011, 15:51:47 UTC
Last modified: 7 Aug 2011, 15:55:51 UTC

Rosetta allows you to set a preference for the work unit runtime you would like to see, and then does it's best to meet that goal.

You have to really look at whether you are talking about CPU time per task, or the wall-clock time from when it started until it completed. The above mentioned preference is with regard to CPU time. In other words if you start a task right now, and it runs all afternoon for 10 hours, if your machine was busy with higher priority work, or suspended the tasks due to BOINC reaching your configured memory limitations, or your machine is configured to only run BOINC at 70% of CPU, the tasks may have considerably less then 10 hours of CPU in by the end of the 10 hour period.

If you go to the tasks tab and select a task, you can click "properties" and see the actual CPU time. The "elapsed time" shown on the task list is the amount of wall-clock time that the task has been activated to run, but higher priority work (Windows task priorities, not BOINC priorities in this sense) may have prevented it from actually getting CPU time.

You can look at your task history and the figures there are CPU seconds used by the task.
Rosetta Moderator: Mod.Sense
ID: 70954 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote

Message boards : Number crunching : WUs taking 25- 50 hours: Is this normal?



©2025 University of Washington
https://www.bakerlab.org