Dear all, I have problem with post-processing of RAD files. When i run the postproc.x it always returns segmentation fault when it get to RAD processing and most time I typed in ulimited -s unlimited, reruning it always caused the also system to hang up for few minutes before it return this below: I checked the RAD files in output folder using GRADS it's okay,  INPUT (RAD) FILE:  output/RAD.2000010200                                                      **************************************************  FILE ALREADY EXISTS:  RAD200002_200011AVG.nc                             Do you want to overwrite the existing file? [y/n/q] y Killed here is my posproc.in: 2000010200,     ! idate0 = First date in File (yymmddhh) 2000010200,     ! idate1 = Start date for averaging and re-writing 2000123100,     ! idate2 = End date for averaging and re-writing 2,              ! iotype: 1=I*2 NetCDF; 2=r*4 NetCDF; 3=grads; 4=vis5d        .false.,        ! plev                                                                                                               .false.,        ! Write out header?                                           .false.,        ! Write out all RegCM data b/twn idate1 & idate2?             .false.,        ! Average RegCM data b/twn idate1 & idate2?                   .false.,        ! Diurnali avg of RegCM data b/twn idate1 & idate2?           .true.,         ! Continually average ATM data b/twn idate1 & idate2?         1.,            ! No. Days for continual averaging (-1=monthly;1=daily;5=5day) '200002_200011',! postproc output filename (not including type & ext)         '../Input',     ! ICBC directory                                              'output',       ! RegCM Output directory                                      'DOMAIN_GREEN.INFO',  ! Domain Info Filename (from terrain)                         'OUT_HEAD',     ! Header File name (from RegCM)                               '2000010200',   !  1stRegCM Output File Extension                             '2000020100',   !  2ndRegCM Output File Extension                             '2000030100',   !  3rdRegCM Output File Extension                             '2000040100',   !  4thRegCM Output File Extension                             '2000050100',   !  5thRegCM Output File Extension                             '2000060100',   !  6thRegCM Output File Extension                             '2000070100',   !  7thRegCM Output File Extension                             '2000080100',   !  8thRegCM Output File Extension                             '2000090100',   !  9thRegCM Output File Extension                             '2000100100',   ! 10thRegCM Output File Extension '2000110100',   ! 11thRegCM Output File Extension                             '2000120100',   ! 12thRegCM Output File Extension                                                        Present address Vincent Lanre Ajayi START-ACCFP fellow Climate Systems Analysis Group Dept of Environmental & Geographical Science University of Cape Town Private Bag X3 Rondebosch 7701 Cape Town, South Africa office:+27216505774 Mobile: +27834262253 Permanent Affiliation Department of Meteorology School Earth and Mineral Sciences, Federal University of Technology, PMB 704 Akure 340001,Nigeria, voajayi@futa.edu.ng skype:vincentajayi1