[GRASS-dev] pthreads in r.mapcalc slower than without

[Hamish]

re. r.mapcalc + pthreads benchmarking in trunk

here's a better test region, as noted in this file:
 trunk/raster/r.mapcalc/test_suite/README

g.region rast=elevation.10m res=5
#rows:       2796
#cols:       3798


Hamish