On Mon, Sep 24, 2007 at 01:21:02PM +0200, [EMAIL PROTECTED] wrote: > On Mon, 24 Sep 2007, Helge Hafting wrote: > > >> Does anyone know roughly how long it takes to build LyX on a machine > >> with one of these processors: > >> * Core 2 Duo E4300 > >> * AMD Athlon 64 X2 4000+ > >> * AMD Athlon X2 BE-2400 (or BE-2350) > >> > >> Actually, my plan is to install one or more virtual machines in it and > > >Hm - virtualization tends to slow things down - why bother? > > Best reason: I'd like some practical experience with VMs. > > Initial reason: I'm thinking of setting up several VMs with different > Linux distributions. Then it might be possible to automate build tests > and/or unit tests on them, and perhaps also on windows. I wouldn't run all > these additional VMs at once, but cycle through them.
Works rather well with vmware btw. > Performance: The machine will be my PVR, I don't want LyX compilations to > interfere with that. Reserving a core for the PVR ensure this, and its > better to reserve just a core compared to use a separate machine... > > Security: I've gotten a bit of security paranoia from a friend who's a > systems administrator:-) > > >> So, going back to my original question, does anyone have an estimate of > >> the build time with these? > >> > >> A somewhat related question: Is a quad core an advantage when it comes to > >> building LyX? Is the linking stage multi-threaded? > > >I don't know about LyX in particular, but compiling can generally take > >advantage of many cores. > > Yes, I know about 'make -j', but I'm wondering in particular about the > linking stage... That will be sequential, of course. But even if Enrico doesn't agree: It is less ugly with dynamic linking, and that'd be sufficient for test builds. > PS. Another alternative might be to use several machines and 'distcc', > which basically distributes the compilation tasks across many machines. > AFAI, this doesn't help with the link stage, the machines must have the > same version of gcc and security is ... so-so. If it jsut your machines, distcc is just fine. And it works well with ccache. Andre'
