Re: LuaJIT on BlueGene/Q
- From: Peter Colberg <peter@xxxxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Wed, 3 Oct 2012 16:06:37 -0400
On Wed, Oct 03, 2012 at 12:05:11PM +0200, Mike Pall wrote:
> Justin Cormack wrote:
> > On 3 Oct 2012 02:22, "Peter Colberg" <peter@xxxxxxxxxxx> wrote:
> > > Is there something I could do to make it work in 64-bit mode as well?
> >
> > I think the correct answer is that someone needs to sponsor Mike to do a
> > ppc64 port. Perhaps IBM can be persuaded...
>
> I'm not sure the memory model is even compatible (too lazy to dig
> in the docs). But it's not a big loss: PPC was designed for mixed
> PPC32/PPC64 mode from the beginning. AFAIR most binaries on these
> systems are 32 bit -- there's no advantage in making them 64 bit.
I have just found out about this the hard wayâ These supercomputer
installations support 64 bit applications only, and all applications
shipped with the OS (Linux, or a modified Linux called CNK) are 64 bit
as well.
I bumped into a problem with the IBM MPI environment segfaulting
using 32 bit MPI libraries, so that is it with LuaJIT on BlueGene.
Peter
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