$partialdiff sub X$ [ NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel u ]

grid: /T (57.2957795130823 meter radian-1 east second-1) ordered (-131.5 57.2957795130823 meter radian-1 east second-1) to (757.5 57.2957795130823 meter radian-1 east second-1) by 5.9389054E-06 N= 149690880 pts :gridforrtl: severe (174): SIGSEGV, segmentation fault occurred Stack trace terminated abnormally.