We have a new machine in the compile farm: gcc203. It is a POWER8 system in big-endian mode running Linux, that is, powerpc64-linux.
It runs Debian; it is a 8-cpu partition of a bigger machine (an S822).
That means you shouldn't normally use more than -j32 (and always much less for non-interactive runs, of course).
The Power ISA machines we now have are:
|Name||Arch||OS||CPU cores||CPU threads||RAM||Disk|
|gcc110||POWER7 BE||Linux||16 cores||64 threads||64 GB||1.8 TB|
|gcc203||POWER8 BE||Linux||8 cores||64 threads||64 GB||1.0 TB|
|gcc112||POWER8 LE||Linux||20 cores||160 threads||256 GB||1.8 TB|
|gcc135||POWER9 LE||Linux||32 cores||128 threads||256 GB||24.9 TB|
|gcc111||POWER7 BE||AIX||12 cores||48 threads||128 GB|
|gcc119||POWER8 BE||AIX||16 cores||128 threads||160 GB|
So, clearly, as a workhorse machine you should use gcc135!
The list of machines currently has some of the CPU/core numbers wrong for gcc203; we're working on it, various programs do not know how to handle virtualised systems well.
Enjoy, and please be mindful of others!