(there was work but you don't have enough disk space allocated)
17 Feb 2005 9:41:15 UTC
Topic 187673
(moderation:
Einstein suddenly complains about not enough free space:
Einstein@Home - 2005-02-17 10:30:58 - Requesting 150926 seconds of work
Einstein@Home - 2005-02-17 10:30:58 - Sending request to scheduler: http://einstein.phys.uwm.edu/EinsteinAtHome_cgi/cgi
Einstein@Home - 2005-02-17 10:31:07 - Scheduler RPC to http://einstein.phys.uwm.edu/EinsteinAtHome_cgi/cgi succeeded
Einstein@Home - 2005-02-17 10:31:07 - Message from server: No work available (there was work but you don't have enough disk space allocated) Removing file H1_0258.4 to free up disk space
Einstein@Home - 2005-02-17 10:31:07 - Got request to delete file: H1_0258.4
Einstein@Home - 2005-02-17 10:31:07 - Got request to delete file: H1_0258.4
Einstein@Home - 2005-02-17 10:31:07 - No work from project
Einstein@Home - 2005-02-17 10:31:07 - Deferring communication with project for 4 hours, 0 minutes, and 0 seconds
Einstein@Home - 2005-02-17 10:32:14 - Requesting 150926 seconds of work
Einstein@Home - 2005-02-17 10:32:14 - Sending request to scheduler: http://einstein.phys.uwm.edu/EinsteinAtHome_cgi/cgi
Einstein@Home - 2005-02-17 10:32:23 - Scheduler RPC to http://einstein.phys.uwm.edu/EinsteinAtHome_cgi/cgi succeeded
Einstein@Home - 2005-02-17 10:32:23 - Message from server: No work available (there was work but you don't have enough disk space allocated) No disk space (you must free 98.5 MB before BOINC gets space). Review preferences for minimum disk free space allowed.
Einstein@Home - 2005-02-17 10:32:23 - No work from project
Einstein@Home - 2005-02-17 10:32:23 - Deferring communication with project for 1 days, 0 hours, 0 minutes, and 0 seconds
What's this? It was running for weeks without problem and now it suddenly wants tons of free space. I'm running of a 128 MB ramdisk together with SETI.
In other words: Is 109 MB free space not enough to hold 11 MB of Einstein data? :(
Aloha, Uli
(there was work but you don't have enough disk space allocated)
)
You may have an option "Leave at least xx GB disk space free" set to some value. If you want to dedicate all the space for BOINC, simply set this to zero. Check your global preferences.
Administrator
Message@Home
> You may have an option
)
> You may have an option "Leave at least xx GB disk space free" set to some
> value. If you want to dedicate all the space for BOINC, simply set this to
> zero. Check your global preferences.
>
I've set to use 0.125GB and to use upto 99% of free space and leave 0.0001 GB free and it worked for weeks :/
I've solved the problem by stopping boinc CC and simply restart it. Maybe it did'nt recognize that itself had deleted the old 11MB data file. After restart the BOINC CC it started downloading by itself. Seems the CC needs some additional treatment ;)
Aloha, Uli
> > You may have an option
)
> > You may have an option "Leave at least xx GB disk space free" set to
> some
> > value. If you want to dedicate all the space for BOINC, simply set this
> to
> > zero. Check your global preferences.
> >
>
> I've set to use 0.125GB and to use upto 99% of free space and leave 0.0001 GB
> free and it worked for weeks :/
The fact that it 'stopped working' is because in the past several weeks I have added code to the scheduler that monitors the free disk space and tries to remove files when there is negative available space.
> I've solved the problem by stopping boinc CC and simply restart it. Maybe it
> did'nt recognize that itself had deleted the old 11MB data file. After
> restart the BOINC CC it started downloading by itself. Seems the CC needs some
> additional treatment ;)
This is an interesting possibility. I'll look into it.
Cheers,
Bruce
Director, Einstein@Home
> This is an interesting
)
> This is an interesting possibility. I'll look into it.
>
> Cheers,
> Bruce
>
>
Thanks for the answer :)
While running on a 128MB ramdisk with >96 MByte free space i don't understand that BOINC/Einstein refuses to download an additional 11 MB data file. Instead i had to wait until all wu's referring to the old data file finshed. Then it refused to download a wu at all!
I like to have at least 2 wu's on disk (granted there is enough space) in case of a server outage.
I'm forced to run on a ramdisk, cause the harddisk in the notebook overheats after ~3-4 days of constant crunching. By running from ramdisk (The notebook has 640MB ram) the harddisk can go to sleep after 2 minutes and hasn't overheated since using the ramdisk.
Aloha, Uli
> While running on a 128MB
)
> While running on a 128MB ramdisk with >96 MByte free space i don't
> understand that BOINC/Einstein refuses to download an additional 11 MB data
> file. Instead i had to wait until all wu's referring to the old data file
> finshed. Then it refused to download a wu at all!
I assume the machine in question is NOMAD. This currently reports:
0.098466 GB of free space.
The reason it doesn't download an 11MB file is not because there is no space. The problem is that this would leave only 85 MB of free space. E@H has a 100MB space limit requirement, because sometimes the intermediate Fstats.Ha and Fstats.Hb files get pretty big. So there is a risk that on this machine, you'd do lots of computing and run out of space to store the results.
That's why you aren't getting more than one WU at a time: the space requirement for each WU is 100 MB.
You're in a bad situation where your free disk space is 'just barely enough' to meet the E@H requirements. So you are oscillating just above and below the limit.
Bruce
Director, Einstein@Home
> You're in a bad situation
)
> You're in a bad situation where your free disk space is 'just barely enough'
> to meet the E@H requirements. So you are oscillating just above and below the
> limit.
>
> Bruce
>
Yes, you're right, the machine in question is NOMAD. Would it help to increase the ramdisk size to 160 MB? Cause that won't be a problem to me. Would that be sufficient or do i have to experiment with 256 MB? Please answer, cause i would like to contribute with this machine to Einstein cause i like the goal of the project.
Aloha, Uli
> > You're in a bad situation
)
> > You're in a bad situation where your free disk space is 'just barely
> enough'
> > to meet the E@H requirements. So you are oscillating just above and below
> the
> > limit.
> >
> > Bruce
> >
>
> Yes, you're right, the machine in question is NOMAD. Would it help to increase
> the ramdisk size to 160 MB? Cause that won't be a problem to me. Would that be
> sufficient or do i have to experiment with 256 MB? Please answer, cause i
> would like to contribute with this machine to Einstein cause i like the goal
> of the project.
I think increasing to 160 would help you to get additional WU. Can you try and see what happens?
Bruce
Director, Einstein@Home
> I think increasing to 160
)
> I think increasing to 160 would help you to get additional WU. Can you try
> and see what happens?
>
> Bruce
>
Yep, increased the ramdisk to 160MB and got 3 wu's right in a row :)
Thanks for the explanation.
Aloha, Uli
> > I think increasing to 160
)
> > I think increasing to 160 would help you to get additional WU. Can you
> try
> > and see what happens?
> >
> > Bruce
> >
>
> Yep, increased the ramdisk to 160MB and got 3 wu's right in a row :)
> Thanks for the explanation.
Terrific!
Bruce
Director, Einstein@Home