>>> Dave Carlson <dave at math.umn.edu> 03/09/05 3:21 PM >>>
>Linux only compiles on gcc, as far as I'm aware.

These articles mention compiling the Linux 
kernel with the Intel compiler:

http://www.ussg.iu.edu/hypermail/linux/kernel/0403.1/0503.html
http://blog.janik.cz/archives/2004-03-11T23_04_41.html
http://www.askwebhosting.com/story/699/Red_Flag_Delivers_First_Commercial_Version_of_Linux_Compiled_with_Intel_Compiler.html

and LKML posts I read discuss using gcc 
3.2.x.