Jeffrey D Anderson wrote:
On Thursday 11 February 2010 2:19:26 pm Reddy, John wrote:
One of my users, bless his heart, has requested I install a tool he called
"modules". That's all he's been able to describe it to me as in terms of
name. Apparently, it's a program that allows users to load or unload
grouped sets of environment variables.
Does anyone have this tool, know what it's called, who's developing it,
etc? Yes, I know, horribly, terribly vague software description. Here's
the context, which may help identify it.
We've got a clustered processing environment with 120 dual-quad nodes
running a variety of SL 4.x and 5.x with job control via Torque & Moab.
We've got three different compilers with multiple versions each, a variety
of implementations of MPI, etc. So a tool such as this would be useful for
my users.
Now the MPI selection is easily handled with mpi-selector. I could
probably (easily) enlist that tool for environment selection. However, I'd
like to see if I can find someone using the tool my user requested.
TIA for any thoughts on the matter.
-John
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John Reddy
Technology Architect
Information Technology Division - Unix Services
Brookhaven National Laboratory
[email protected] - 631-344-3284
John:
Actually your user is correct. "Modules" really is the name of the tool.
googling 'modules environment' provides a lot of information. The first hits
are the sourceforge page for the project, and a wikipedia article that should
be very illuminating.
It is a very useful package for environments where you have different versions
of the same tools. "modules" are described by simple tcl scripts that can
be defined by the administrator or by users themselves. Then users can
select between versions by simple commands.
It was commonly used on Solaris, and I've used the linux version in a
clustering environment much like you describe. You may find it gives you
much more flexibility than mpi-selector. For example, if you have tools that
are compiled with different versions of compilers, for different versions of
MPI.
If the package you are looking from really is at
http://modules.sourceforge.net/ then this is found in epel as
"environment-modules"
yum install yum-conf-epel
(or your favorite way of getting epel into your yum repositories)
yum install environment-modules
Troy
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Troy Dawson [email protected] (630)840-6468
Fermilab ComputingDivision/LSCS/CSI/USS Group
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