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!