答复: Prefmem of bus 3
YhLu at tyan.com
Mon Mar 1 15:51:01 CET 2004
Some time you said that arima board connect all PCI-X slots of amd 8131 irq
to amd 8111 ioapic intead of 8131.
So even disable ioapic of 8131, device on PCI-X still works properly.
After enable ioapic of 8131, devices that are not using prefmem works well.
发件人: ebiederman at lnxi.com [mailto:ebiederman at lnxi.com]
发送时间: 2004年3月1日 10:48
收件人: ron minnich
抄送: YhLu; ebiederman at lnxi.com; LinuxBIOS
主题: Re: Prefmem of bus 3
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.
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