Hello,
I would tend to agree that it _may_ help in a rather large cluster. For example, a node's fan or environmental control fails and the system becomes too hot, ACPI may signal an event to gracefully shut down the node. Or perhaps look towards CPU throttling. However, from some of the messages I have seen to the LinuxACPI mailing list from Linus, it is hard to gauge the outlook for ACPI in Linux, or I am mis-reading the messages altogether.
For my development purposes, I have completely disabled ACPI in my kernel config, however, this had no effect. Also, when I run `getpir` and generate a new irq_table.c, do I need to make any modification to that source? Or, do I simply replace the existing <freebios home>/src/util/mainboard/pcchips/m758lmr+/irq_table.c ?
If the latter is the case, this had no effect. I used the resulting irq_table.c from `getpir` with "option DISABLE_INTERNAL_DEVICES=1" in my config, and without. No change: No USB, and the same IRQ problems. The only change is with "option DISABLE_INTERNAL_DEVICES=1" set in the config file, it now boots in 35 seconds, but of course, I didn't have any devices working besides the FrameBuffer console...
A quick side note, in the config file, there is no difference between "option DISABLE_INTERNAL_DEVICES=1" && "option DISABLE_INTERNAL_DEVICES=0"
Regards,
Todd E. Johnson tejohnson@yahoo.com
-----Original Message----- From: linuxbios-admin@clustermatic.org [mailto:linuxbios-admin@clustermatic.org] On Behalf Of Ronald G Minnich Sent: Friday, October 04, 2002 10:42 AM To: Todd E. Johnson Cc: Linuxbios@clustermatic.org Subject: RE: PCChips M758LMR+ works for me but...
On Fri, 4 Oct 2002, Todd E. Johnson wrote:
I primarily have been using ACPI for startup & shutdown.
Startup will
always work when there is momentary contact to the power
header. ACPI
fails to load which causes it to not see the power button.
There is not
an ACPI directory under /proc, so ACPID has nothing to
watch for (ex:
Momentary contact on the power button to initiate `shutdown`.
The trend in the free os community is to do ACPI functions in the OS -- this is smart, I think. You need to get ACPI tables from the existing BIOS and then see how far the Linux ACPI emulator is and how well it works.
This is a bit of work but would be a huge help and we would love to have a writeup.
ron
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