I have a nbody running with a 6 Hour completion of 1% of total. At this rate it will take 600 Hrs to finish ... the deadline is 1/29/2013.

I could set "get no new tasks" and in about 5 min's the other 3 WU's will finish and the nbody will have 4 CPU's to run in.

BUT

If it errors out then I wont be doing any work.

Just how "stable" is nbody (today) ... should I let it use its full 4 CPU's or just let it run as-is and expect it to fail .... whenever?

Ed F

<edit> I set BOINC to 12.5% and reset to allow new tasks. This should allow 1 WU (1 CPU ) to run ... since the one running now uses 4 cpu's this should "fill" my -normal- use 50% of cpu's boinc quote. Once it finishes (or errors out) Boinc will allow 1 more WU "in". if it is nbody ... it'll run on 4 cpu's ... If its NOT nbody it will share 4 cpu's (using ~25% each) ... that's my guess.

Ed F

I have a nbody running with a 6 Hour completion of 1% of total. At this rate it will take 600 Hrs to finish ... the deadline is 1/29/2013.

I could set "get no new tasks" and in about 5 min's the other 3 WU's will finish and the nbody will have 4 CPU's to run in.

BUT

If it errors out then I wont be doing any work.

Just how "stable" is nbody (today) ... should I let it use its full 4 CPU's or just let it run as-is and expect it to fail .... whenever?

Ed F

<edit> I set BOINC to 12.5% and reset to allow new tasks. This should allow 1 WU (1 CPU ) to run ... since the one running now uses 4 cpu's this should "fill" my -normal- use 50% of cpu's boinc quote. Once it finishes (or errors out) Boinc will allow 1 more WU "in". if it is nbody ... it'll run on 4 cpu's ... If its NOT nbody it will share 4 cpu's (using ~25% each) ... that's my guess.

Ed F

PLEASE let us know if this works for you!!! My understanding is that it won't, but it could I guess. My understanding, I am just a cruncher like you, is that when you limit the cpu's, by the 12.5% in your case, then that is ALL Boinc will use. Using more goes outside the settings and that is not permitted, is my understanding. How I understand it works is that you are crunching along using all of your cpu's and in comes a unit that can use more than one core, so it uses as many cores as it wants, after all 100% are available and either the units on the other cores get paused or they don't start if they are not yet running. Now it could work like you are saying, I don't know for sure, so PLEASE come back and tell us how it is REALLY doing!

PLEASE let us know if this works for you!!! My understanding is that it won't, but it could I guess. My understanding, I am just a cruncher like you, is that when you limit the cpu's, by the 12.5% in your case, then that is ALL Boinc will use. Using more goes outside the settings and that is not permitted, is my understanding. How I understand it works is that you are crunching along using all of your cpu's and in comes a unit that can use more than one core, so it uses as many cores as it wants, after all 100% are available and either the units on the other cores get paused or they don't start if they are not yet running. Now it could work like you are saying, I don't know for sure, so PLEASE come back and tell us how it is REALLY doing!

Yes it works just fine ( with BOINC 6.12.34). since my last post the WU has 23:24:00 elapsed time -6.74% finished - and 69:20:00 cpu time (a ratio of about 3:1 - remember the first 6 hours were run with 3 non-nbody WU's competing with it), Boinc has NOT scheduled any more WU's 'cause it's set to 12.5% BUT the 1 WU allowed by bounc (the nbody filling the 12.5% slot) is merrily running at at 46% usage according to task manager.

It seems to me that MT works just fine ( except it only uses 4 cpu's and not 8) and that bounc 6.12.34 does not know how schedule them.

When this one finishes (in 14 days) or errors out I have de-selected nbody 'till more info is available about it and boinc.

Ed F

I have a screen shot from task manager showing 4 seti@home WU's running on CPU's 0,2,4,and 6 and 1 milkeyway@home WU (the nbody one) running on CPU's 1,3,5,and 7.

https://dl.dropbox.com/u/42596478/BOINC%20with%20MW%40H%20and%20S%40H%20running.jpg

I have separate copies of boinc running out of different dir's for s@h and m@h.

As you can see (if i did the URL correctly) the 4 s@h WU's are each consuming 100% of 4 CPU's while the MT nbody WU is consuming MOST of the 4 CPU's.


Fun huh!!

Ed F

I like the way that some of your results (and mine, now I come to look at them) have an infinite improbability.

Now, if we could use those in a drive, we could go and explore the Milky Way for ourselves, instead of just using telescopes...

Well, it errored out after 40+ hours giving a reported time of 0.00 and now affigned to a new person (sorry) see WU 291619119.

It errored with disk exceeded ... whatever that means ... i expect it did not exceed the 40Gb boinc allows ... who knows.

so now I'b running 1 "normal" w@h ' till I UP boinc to 50%

Ed f