The compute platform overview pages [0] list all the HPC systems at LLNL. It's an incredible list, with a huge amount of TFLOPS, GBs, CPU and GPU cores available. The systems range from small 50 TFLOP, 20 node Xeon CPU Linux clusters up to the multi PetaFLOP POWER9 and Nvidia GPU monsters with millions of cores. Not sure what the total compute power available across all lab systems would be, although I guess it will be dominated by recent installations like Sierra - maybe 250 PFLOPS? Anyway, impressive engineering....