My bonic has LHC and SETI installed, and they run fine.

Recently I add BBC Climate Change. Soon I found my bonic only running BBC but not have any work of LHC and SETI running.

This message show:
26/11/2006 20:07:54||Suspending work fetch because computer is overcommitted.

Why?

---

My bonic has LHC and SETI installed, and they run fine.

Recently I add BBC Climate Change. Soon I found my bonic only running BBC but not have any work of LHC and SETI running.

This message show:
26/11/2006 20:07:54||Suspending work fetch because computer is overcommitted.

Why?

This is an advisory not an error message and is very common when crunching a project like Climate. This project has very long WU that take months to crunch. It also has a tendency to underestimate the time it takes to crunch. Because of this it doesn't always share well with other projects unless you have a very fast computer with multicore that runs 24/7.

One of Boinc's Work Scheduler and Work-Fetch Policy primary rule is to make sure you don't waste CPU time by missing a deadline. It is very conservative in these estimates and will not download other work until it is satisfied that it can handle the work load. Another rule is to follow the resource share you have set. It does this with a debt system and any extra time it gives Climate now will be repaid to your other projects when it calculates that it can safely do this.

If you don't try to micromanage it, Boinc handles this situation very well in the long term. You may want to consider assigning the climate project a larger resource share. This will help in making it easier to share the computer with other projects. In this case, patience will be needed until Boinc can find a balance between your projects.

---

Boinc V 7.4.36
Win7 i5 3.33G 4GB NVidia 470

The overcommitted messages seem more likely to appear after you've had the computer turned off for a few days. Boinc seems to assume that you will regularly turn it off, reducing the % of time that boinc is running, so you'll be less likely to achieve the project deadlines.

But if you don't achieve the CCE deadline, the server will continue to accept your trickles and results after that date, as long as it receives trickles fairly regularly and sees that your model is still active. I don't know how fast or slow your computer is or how many hours per day it works on the climate model, but from the point of view of the researchers in Oxford, you should try to finish the model by the end of 2007.

Because also running other projects will make your BBC model take a long time to complete, make sure you regularly back up the whole CCE folder, just in case the model crashes. Restoring a backup is the only way to continue crunching a crashed model.

If you need instructions on backing up, let us know.

---

Thanks for your answer and I just give abort and quit the BBC project on all of my computers.

As yours spoken, the overcommit rules exist as it is necessary. Then I just let bonic manager control and see what happens.

I found a dead lock situation that makes me only have to give BBC up.

The BBC process always quit itself after a certain time of running. Here I means the BBC process, not the bonic process. I guess it is because some kinds of bugs exist in the BBC process, and see what it happens.

Old situration:
Bonic hold a piece of works of SETI and BBC. BBC running some time ans it quit. After a certain time, bonic switch the SETI up according to my perference. Until bonice switch to BBC again, bonic quit the SETI process and start up BBC process, this just like giving BBC process a restart command.

New situration:
Bonic hold a piece of works of BBC only. BBC running some time ans it quit. But bonice prevent the download of SETI project and don't know BBC process is already not there. So my CPU is keep idle until I back to home.

I run bonic is to let it use up my CPU, it's ok for me if BBC project really take it all up. But if the BBC project only brings idle to my CPU, why do I install bonic?

After I discover the shortest time of BBC process running (30 mins only then quit), I just pull out this project.

Joshua.

---

The climate projects need a very stable PC to run on, and things like graphics drivers can cause problems.

Is the PC overclocked? Can it successfully run 24hours of Prime95's torture test?

---

Thx for advance. I am using Intel CPU without overclock. For drivers matter, I am not going to change anything since my PC 1st goal, is for my own usage, not for the project, right?

But since I have give it up, nevermind now.

I guess such "stable" environment is not a common in PC world, because too much 3rd party HW and SW. Maybe Mac would is better.

Joshua.

---