[Beowulf] statless compute nodes

[Roland Fehrenbacher]

>>>>> "Joe" == Joe Landman <landman at scalableinformatics.com> writes:

    Joe> On 05/27/2015 09:22 PM, Trevor Gale wrote:
    >> Hello all,
    >>
    >> I was wondering how stateless node fair with very memory
    >> intensive applications. Does it simply require you to have a
    >> large amount of RAM to house your file system and program data?
    >> or are there other limitations?

    Joe> Warewulf has been out the longest of the stateless
    Joe> distributions. We had rolled our own a while before using it,
    Joe> and kept adding capability to ours.

Not quite true. Qlustar (coming from its predecessor Q-Leap BeoBox) has
never booted anything but stateless. And that's since
2001. Don't think warewulf has been around at the time.
Not to mention that our images are modular with the modules being packaged
up as debs => absolutely clean, reproducible + easily upgradeable images!

-- Lustre OST --
Included image modules: core lustre-2.6 ofed
sn-1:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
/dev/root                          277M  234M   44M  85% /
devtmpfs                           5.9G     0  5.9G   0% /dev
none                               5.9G  3.5M  5.9G   1% /run
none                               5.9G     0  5.9G   0% /run/shm
none                               4.0K     0  4.0K   0% /sys/fs/cgroup
192.168.52.254:/srv/ql-common      277M  234M   44M  85% /etc/qlustar/common
ost1                               719G  128K  719G   1% /zfs/ost1
ost1/var                           4.0G  2.9M  4.0G   1% /var
/scratch                           4.0G   12M  4.0G   1% /tmp
ost1/ost1                          5.3T  4.6T  676G  88% /l/ost1

-- Compute Node --
Included image modules: core lustre-client ofed torque
beo-32:~# df -h
Filesystem                         Size  Used Avail Use% Mounted on
/dev/root                          275M  232M   44M  85% /
devtmpfs                            32G     0   32G   0% /dev
none                                32G  3.0M   32G   1% /run
none                                32G     0   32G   0% /run/shm
none                               4.0K     0  4.0K   0% /sys/fs/cgroup
192.168.52.254:/srv/ql-common      275M  232M   44M  85% /etc/qlustar/common
system                             6.4G     0  6.4G   0% /zfs/system
system/var                         2.0G  2.2M  2.0G   1% /var
/scratch                           7.4G  991M  6.4G  14% /tmp
192.168.51.254 at o2ib:/l              11T  9.3T  1.3T  89% /l

-- 

Roland

-------
http://www.q-leap.com / http://qlustar.com
          --- HPC / Storage / Cloud Linux Cluster OS ---