On 3 December 2012 11:48, Jan Groenewald <[email protected]> wrote:
> Hi
>
> I'm making an LXC-based machine to host a couple of VMs for all supported
> desktop Ubuntu versions since 12.04 as buildbot slaves for Sagemath. LXC is
> linux virtualisation, and virtualises ABOVE the kernel level, so the same
> kernel will run for all the guest OSes. If this is a problem for testing, I
> will also investigate KVM instead. These are Ubuntu preferred solutions, so
> I will rather work with either of those.

If I understand you correctly, you are ensureing the kernel version of
the host is greater than the guest - am I correct? I can't see the
point in worrying about that at all. The host can be a completely
different operating system to the guest. I run all my virtual machine
(Linux and Windows) with a host that is Solaris. 77

>Is 1G memory enough to build Sage? I've just tried it on virtualbox on a 1G
> host and only this failed, but after running ./sage -docbuild reference html
> --mathjax it passed.


I don't think 1 GB is sufficient. I've seen figures like 2.5 GB being
needed to build the documentation. It must depend to a certain exent
on exactly what else is running on the system. If you have very
limited RAM, you will probably want to turn off anything not absoluety
essentail - sendmail etc.


> I have an 8G machine and would like to put 6 virtual guests on there:
> 12.04.1 32bit and 64bit, 12.10 32bit and 64bit, 13.04 (development) 32bit
> and 64bit; and to keep 2G to do PPA building on the host.

I think you will fail with that. Each guest needs a bit of overhead. I
don't know how much that will be, but I would be surprised if it < 80
MB

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