From: Mike Travis <travis@sgi.com>
Date: Thu, 13 Nov 2008 16:39:51 -0800

quoted text
> There's been a couple of different proposals to attempt to disassociate
> i/o and system vectors though even attempting to guess at the number of
> i/o devices is tricky.  Every one of the 512 nodes on a UV system *may*
> have a number of i/o devices attached to them though practically this
> will be rare. 

Practicality is what really matters.

We can even make the constant number a config option, so that if
someone has a system that actually triggers past this limit even dist
vendors can simply bump the config option value.
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