parallel make, do we have a FAQ ?

[Andreas Tobler]

Hi,

I got an Enterprise 2 and I was very exciting on the 2 CPU's handling a 
bootstrap.

Hm, make: Warning: Ignoring DistributedMake -j option. 50% idle.

Do we have a FAQ where parallel make is explained? When does it work? 
Only when building libraries?

Sorry, if this is a FAQ, but on the building section it only mentions: 
make -j 2 bootstrap.

Thanks for any pointer,

Andreas