Running perl scripts and non-mpi programs on scyld

Rayson Ho raysonlogin at yahoo.com
Wed Apr 16 17:10:03 EDT 2003


What is the ratio of parallel programs and serial programs ran on your
cluster??

Rayson

--- "Kristen J. McFadden" <kjm31 at cu-genome.org> wrote:
> Hi, 
> 
> We have a Scyld Beowulf cluster currently running on 28cz-4 (we are
> getting -5 soon).  We have been running into a lot of problems with
> users that are trying to run scripts on the child nodes.   To start
> with, what is the best way to run serial (non-MPI) programs?
> 
> Here is the current issue I'm trying to tackle.
> 
> Say I have a perl script.  (I  NFS mount /usr /lib etc. on the child
> nodes)
> 
> I want to run this perl script on N nodes with N DIFFERENT arguments.
> 
> Right now, even when I write up a small file with "mpprun my_program
> arg1 arg2 | batch now" in 100 lines or something for all different
> arguments, bbq does NOT properly distribute these programs.  It
> overloads some nodes and behaves essentially unpredictably.  
> 
>  
> 
> Is there any tools or info anyone has about running Perl scripts and
> the
> like safely on a Scyld implementation?
> 
>  
> 
> Thanks, Kristen
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