Prefmem of bus 3
Li-Ta Lo
ollie at lanl.gov
Mon Mar 1 13:38:00 CET 2004
On Mon, 2004-03-01 at 11:48, Eric W. Biederman wrote:
> ron minnich <rminnich at lanl.gov> writes:
>
> > On Fri, 27 Feb 2004, YhLu wrote:
> >
> > > Have you ever tested myrinet card on K8 MB under LinuxBIOS?
> >
> > we have a 1408-node K8 machine with myrinet working under linuxbios, and a
> > 256-node K8 machine working with linuxbios. Arima HDAMA mainboards.
> >
> > I wonder what's going on here, I have not had time to look in detail.
>
> So the problem appears to be that the prefmem region on the upper bus
> is to large.
>
> I wonder if why this work on LANL clusters and not on others is the
> result of code skew.
>
> Lightning nodes with myrinet only seem to have one prefmem region.
>
> Yet another reminder that I really need to finish syncing up the code bases.
>
I think there is some problem in the resource allocation code so it can
not handle devices with 2 prefmem.
Is the code just picking the "largest" resource ? I am really confused
by the code in devices.c
Ollie
More information about the coreboot
mailing list