Scalings for PMstartMp.f90
---------------------------
Columbia4

NROW=1024
Procs  Cputime(secs) Wallclock(min) Spectr(wall,sec) FFT(wall,sec)
8       5709         15.5           553              336
16      8016         10.8           425              177
32     15700         11.0           503              111
64     16934          6.3           279              50

NROW=2048
Procs  Cputime(hrs) Wallclock(min) Spectr(wall,sec) FFT(wall,sec)
64       35.1        45.5          1588              742
128      35.0        25.6           854              445