[Beowulf] Naming Convention Survey
landman at scalableinformatics.com
Mon Jan 9 16:04:31 EST 2006
Brian D. Ropers-Huilman wrote:
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> Simple question, likely a complicated answer. Cluster systems should have up
> to three distinct file systems:
> 1) a place to compile and keep "stuff"
/home ... This is the home for "stuff" Think enterprise-like storage.
it has to work, and be available.
> 2) a bit of disk to use while code is running
Two types generally
/local usually a local scratch space, RAID0 typically 100-150 MB/s.
/scratch usually really high speed storage when /local won't cut it.
Neither one of these are intended for long term storage. Fast disk is
usually expensive disk. Fast disk is rarely 5-9's reliable disk (yeah,
I am sure some folks might disagree).
> 3) potential a bit of disk with special characteristics, likely high-performance
See above. It is hard for end users to misunderstand that /local is
local to the node.
> Typically #1 would be called /home. Here at LSU, #2 is typically called
> /var/scratch or /var/local/scratch. Then there is #3. Sometimes we call this
> /scratch and sometimes /work.
> My question: what do other folks call these bits of disk?
I don't like putting local scratch disk on /var unless you don't mind
the occasionally full /var, and all that entails (makes diagnostics fun,
machines crash in interesting and exciting ways when important file
systems fill up ... just try to edit a file, or look at a log file, or
cat something ... ).
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax : +1 734 786 8452
cell : +1 734 612 4615
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