buraq wrote: > I have a notebook with T7200 Intel CPU and r.sun completes > one day's calculation between 3-4 mins(with linke turbidity raster > and shadowing, step = 1). I want to run r.sun with step=0.5 in a > large scale and detailed area. > So, I need to reduce the calculation time for calculating 365 day data. > Could you give me advices about hardware for reducing > calculation time?
see tips here: http://grass.osgeo.org/wiki/r.sun (run r.horizon first) 24 hours to complete isn't so bad :) suggestion: to take advantage of dual processor split up operations and (if running linux) run two concurrent mapsets for day 0-180 and 181-365. then when done use g.mapsets to add second mapset to first's search path. wish: someone in the know adds OpenMP* support to r.sun [*] (or pthreads, but OpenMP seems easier) http://grass.osgeo.org/wiki/OpenMP Hamish _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user