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List:       openmosix-general
Subject:    Re: [openMosix-general] make -j migration
From:       mosixview () t-online ! de (Matthias Rechenburg)
Date:       2003-07-31 20:55:43
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Hi Sean,

On Donnerstag 31 Juli 2003 22:02, Sean Kellogg wrote:
> After scanning the list for information on this topic and turning up
> nothing, I figure I'll just go to the source.
>
> I have a 6 box cluster, all SMP, and am trying to compile a kernel using
> all of the available CPUs.  After running 'make dep' I ran 'make -j 12
> bzImage' in hopes of generating 12 make processes that would migrate to
> the various nodes.  Now, here is the strange part...  2 to 3 of the
> makes did migrate, but the other 10 stayed on the home node.  According
> to openMosixView I had only 50% load balancing, and the home node was
> MAXED out, while most stayed at 1-2%.
>
> What am I doing wrong here?

nothing, the linux kernel contains just too small chuncs 
so that they are ready compiled just before openMosix 
migrates + balance them.
make -j works great on openMosix for "bigger" projects.

btw: openMosix also works perfectly together with distcc + ccache
e.g. if you would like to speed up kernel compilation or/and setup
a compile-farm.

> -Sean

happy clustering,

Matt
-- 
E-mail	:  mosixview@t-online.de
www	: http://www.openmosixview.com
an openMosix-cluster management GUI

"Only wimps use tape backups: real men upload their important stuff 
on ftp, and let the rest of the world mirror it."
                                          - Linus B. Torvalds



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