Re: Hefty Big Iron Sun Machines.

On Sat, 27 Aug 2005, Tom 'spot' Callaway wrote:
> On Sat, 2005-08-27 at 18:21 -0400, Lamar Owen wrote:
> > Now, my question to spot is simply this: if I provide the capability to build 
> > Aurora packages on, say, the E6500, what version does the box need to be 
> > running?  If it is running CentOS 4, will that present any technical problems 
> > to building Aurora packages?  (Since CentOS 4 has FC2 and FC3 in its 
> > heritage).  Further, I have offered the use of the beast to help build 
> > CentOS4 packages; any problem with that, spot?
> 
> It depends on how the buildsystems are setup. Dan Williams has been
> pooling the Aurora resources within Red Hat using plague and mock to set
> up an Aurora buildsystem. If we can take your resources and add them to
> that, then it should be possible to build Aurora packages too,
> regardless of the host OS.

Correct, right now the current plague requires one builder instance (and 
therefore one open port) per possible build job.  The next version will allow 
multiple jobs per builder instance (and therefore will require just two ports).  

Additionally, each build job requires a full buildroot by design so you can run 
up quite a bit of disk space if you're talking about a 24-way system being a 
builder.  Buildroots are of course host-OS independent as long as you've got 
sufficient versions of packages to run recent versions of yum and plague.  In 
practice that means you need recent pyOpenSSL, python 2.3 or later, and sqlite 
on the host.

In any case, the system is built to be distributed and additional nodes could be 
added quite easily.  If you ran a build system on just your machines at PARI, 
you'd have quite a formidable one yourself.  Note that you could run a CentOS 
build system yourself in parallel with builders for Aurora.

Dan
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