Hacker News Reader

Should be "multi-process", not "multi-processor".

A single (classic) process can use a single processor; multiple processes can use multiple processors.

I thought you could use a single process with multiple threads to run on multiple processors.

But we have had processes with multiple threads that enable concurrent calculation in a single process for quite some time now, haven't we?

Very true on all modern OS's. Has anyone here looked into the firefox source to see if they are using threads in a parallel way?