* Re: [gentoo-dev] Distribuited build
@ 2002-06-09 21:49 99% ` Nick Jones
0 siblings, 0 replies; 1+ results
From: Nick Jones @ 2002-06-09 21:49 UTC (permalink / raw
To: gentoo-dev
OpenMosix is not a viable option for compiling with "make -j".
The threads of a source file building do not exist long enough
to be migrated. I tired it... Didn't do very well.
> Paul de Vrieze wrote:
> > On Sunday 09 June 2002 22:31, Marko Mikulicic wrote
> >
> >
> > While I didn't test it yet, openmosix could be a solution for better
> > utilization of your computing power. Parallel dependencies are sometimes
> > difficult (cross dependencies), also it would require tweaks to emerge
> >
>
> Well, I delibertely left out openmosix because it is automatically
> supported with make -j n. However there is a big issue with it:
> Openmosix process migration can distribute the load of a single system
> through a cluster but if you install n packages they are build in
> sequence so that only compiles from a single build get eventually
> distributed. And it's even worst when some packages have parallel build
> disabled.
> Moreover openmosix is not applicable in a etherogeneous network, whith
> freebsd, linux, win32, tru64, linux-alpha machines, while distcc can
> execute cross-compilers on every architecture (windows too).
> and openmosix requires all to run a special kernel, administrative
> issues,.... I think that something lighter is needed, for it to be
> really useful. I have access to a LAN with 16 PIV 1.5Gh but with any
> kindof linux distros, versions, libraries, users. The only
> administrative power I have is to run niced jobs and a good amount of
> ram.
>
> However the problem is not openmosix vs. distcc, while both are
> completely transparent with portage and both have the same problem:
> sequential builds.
>
> As for cross dependencies, how does portage handle the now? There could
> a queue for each pending build where dependent build are added.
> RDEPEND does not conflict with paralell builds.
> I agree this would require tweaks to emerge. I think it's not
> urgent in portage1, but it could go in portage2, which with it's added
> performance could resolve this kind of dependence in acceptable time.
> What do you think ?
>
> Marko
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2002-06-09 20:31 [gentoo-dev] Distribuited build Marko Mikulicic
2002-06-09 14:38 ` Paul de Vrieze
2002-06-09 21:17 ` Marko Mikulicic
2002-06-09 21:49 99% ` Nick Jones
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