<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div>Dear All,</div><div><br></div><div>I am using WRFV3.3.1 on our BlueGene/P compiled wit XLF compilers and mpi openmpi implementation. I intend to run a large wrf simulation (1000x1000x41) and trying to optimize(in terms of simulation speed) the wrf run. I know that nproc_x, nproc_y, tile_<span style="font-style: italic">sz_</span><span style="font-style: italic">x and tile_</span><span style="font-style: italic">sz_</span>y options can be used for this purpose but do not know how to do this. I also could not find sufficient details on configuring these options in wrf documentation.</div><div><br></div><div>I would greatly appreciate if somebody could advise me how to configure these options.</div><div><br></div><div>Thanks and best regards,</div><div>Basit</div></body></html>