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Re: Woody on IBM pSeries 630 (POWER4)

JP Glutting wrote:

> Thanks!
> Tom Gall wrote:
> > JP Glutting wrote:
> >>What are the trade-offs for 64 vs. 32 bit kernels?
> >
> >
> > 32 won't work on that hardware. Sorry. 8-(
> Ouch.. But it is possible to run the 32-bit compiled software in
> "userspace", or am I completely off the track here?

Software compiled as 32 bit should work just fine. The one gotcha is that
your glibc is built without the memcpy.S routine that uses the dbcz
instruction.  Or inline assembler that uses it.....

> >>How much trouble will it be to compile source from unavailable packages
> >>on this computer?
> >
> > Unavailable packages? huh? Not sure what you mean here?
> >
> Well, I am assuming that Debian has binaries that work on the POWER4 as
> well as other PPC chips, although that may not be the case. Any
> information would be helpful.
> I guess what I meant were things that are not available in Debian (we
> have to compile lots of little bioinformatics tools we can get the
> source to). Of course, we have other machines we can use these for, so
> that should not be too much of an issue, but are there any big compiler
> issues with the POWER4?

Assuming you are building 32 bit apps, just use the current crop of ppc32
64 bit applications are just now possible since the 64 bit ppc glibc patches
have just
hit the streets.

> Actually, what might be good to hear is what steps I need to take to get
> a working Debin installation on a p630, starting from scratch. I need to
> compile (cross-compile?) a kernel (or get one that is already compiled),
> make boot disks, and do the install. What am I missing? What problems am
> I going to run into?

I'm about to install my 270 (a 64 bit ppc box) for the first time as debian.

Earlier Rolf Brundeseth has posted to the list (and folks their commends)
about how to install. Your 630 route should be about the same.



Tom Gall - [Embedded] [ppc|ppc64]  Code Monkey
Peace, Love and Linux Technology Center "Where's the ka-boom?
(h) tgall@rochcivictheatre.org           supposed to be an earth
(w) tom_gall@vnet.ibm.com                shattering ka-boom!"
(w) 507-253-4558                         -- Marvin Martian

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