I just grabbed the first listed Cray XT2 crashdump. I managed, just barely :), to not read the README file until I was done looking through everything else.
The (apparent) root cause was determined after an engineer pulled a couple of 64-bit hex strings that were apparently the wrong magic values out of 310MB of text. A definite case of having to know what you're looking for.
As for looking through dmesg et al, it vaguely reminds me of the PlayStation/2 developer system... but bigger, and with awesome networking and compute instead of graphics.
Google isn't finding any hits for some of the XT2 kernel's boot-time text strings :D