Re: Cluster Config Question

On Fri, 2005-12-09 at 14:29 -0500, Brian McEntire wrote:
> Hello OpenMosix users -
> 
> I'm in the early planning stages of setting up a SSI cluster. I've
> read the OpenMosix Howto and also the FAQ, but I couldn't find a good
> answer to this question and I hope someone on the list can help:
> 
> We have about 10 systems running 3 different versions of Red Hat
> Linux. The versions are RH 7.2, RHEL3 WS, and RHEL4 WS. I know RHEL4
> may be a problem because it runs the 2.6.x version of the Linux
> kernel.


> My question is, how similar should the nodes be? Is it ideal if they
> are identical? Is it a problem is they have different applications
> installed on them? Most of the nodes at least
Not at all.
>  have the same NFS mounts for storage already. But how does MOSIX deal
> with an ImageMagic process, for a random example, starting on one node
> that has ImageMagic installed, but then the process migrates to a node
> that doesn't have that app installed?
> 
Binaries only have to be installed on the node where you launch the
process.

> I also read that people shouldn't expect big speed-ups on compiles,
> but compiling is only part of the workload for these clusters. If
> compiles still work, and other loads can be effectively load balanced,
> compiles should benefit as a side effect. The question again comes
> down to, differences between the systems, are they okay? What happens
> if a compile starts on one system and then moves to another that
> doesn't have some required libraries or has a different version of
> GCC?
> 
doesn't matter .. a migrated process doesn't use the stuff that's on the
remote disk.


-- 
Kris Buytaert <mlkb-1zPVpAQ/[email protected]>


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