The @anl.gov is probably this: https://www.alcf.anl.gov/bgclang-compiler See: https://en.wikipedia.org/wiki/Blue_Gene#Blue_Gene.2FQ "The Blue Gene/Q Compute chip is an 18 core chip. The 64-bit PowerPC A2 processor cores are 4-way simultaneously multithreaded, and run at 1.6 GHz."