Hi. I have access to a computer with 24 CPU's, and want to speed things up. Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 24 On-line CPU(s) list: 0-23 Thread(s) per core: 2 Core(s) per socket: 6 Socket(s): 2 NUMA node(s): 2 Vendor ID: GenuineIntel CPU family: 6 Model: 44 Stepping: 2 CPU MHz: 2394.136 BogoMIPS: 4787.82 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 12288K NUMA node0 CPU(s): 0,2,4,6,8,10,12,14,16,18,20,22 NUMA node1 CPU(s): 1,3,5,7,9,11,13,15,17,19,21,23 I have been looking at: http://www.nmr-relax.com/manual/Usage_multi_processor.html This says, that you need mpi installed. Is it possible to run relax_disp in GUI mode with more than 1/2 processors? Best Troels Emtekær Linnet