Beowulf I/O Errors

Matthew Jochum Matthew.Jochum at noaa.gov
Wed Jan 17 08:47:10 EST 2001


Hey,
    I got the cluster up a while back.  I found my problem when I read the boot
logs left by the other nodes.  The ext2 file systems were not created during the
slave installation, and thus could not mount anything.  After funning mkfs on the
nodes, they started working properly.

    Now my only problem is that beowulf is only aware of one of the CPU's on a
specific node.

Thanks,
Matt


> Hello,
>
> I think it is about time that Daniel changed the instructions on the web page.
> Here are the instructions you'll need to follow. First you'll have to change the
> /etc/beowulf/fstab file to look like this:
>
> /dev/ram3       /       ext2    fs_size=65536   0       0
> #/dev/hda1      beoboot         ext2    defaults        0 0
> #/dev/hda2       swap            swap    defaults        0 0
> #/dev/hda3       /               ext2    defaults        0 0
> #none            /proc           proc    defaults        0 0
> #none            /dev/pts        devpts  gid=5,mode=620  0 0
> #$MASTER:/home   /home           nfs     defaults        0 0
>
> Then you'll need to boot off of the floppy and do the beofdisk, reboot,
> beoboot-install.  Before you reboot the last time you'll need to edit your fstab
> file again so it looks similar to this:
>
> #/dev/ram3       /       ext2    fs_size=65536   0       0
> #/dev/hda1      beoboot         ext2    defaults        0 0
> /dev/hda2       swap            swap    defaults        0 0
> /dev/hda3       /               ext2    defaults        0 0
> none            /proc           proc    defaults        0 0
> none            /dev/pts        devpts  gid=5,mode=620  0 0
> $MASTER:/home   /home           nfs     defaults        0 0
>
> Then reboot.  I've found that the last node in the cluster always has a problem
> booting.  Just givem it some time and it will finally boot.
>

--
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