Hi.. i am running regcm4 and was trying to give a parallel run .After checking the number of processors on my cluster i gave run on 2 processors parallely mpirun -np 8 ./Bin/regcmMPI regcm.in > regcm.out&  but the corresponding regcm.out file created had the following fatal error...  maximum  hor. diff. coef. =  0.56250E+06 m*m/s  Time variable in ICBC inconsistency.  Expecting ibdyfrq =            6  Found     ibdyfrq =            0   -------------- FATAL CALLED ---------------   Fatal in file: mod_ncio.F90 at line:   1131   ICBC READ ERROR   ------------------------------------------- rank 0 in job 5  ajaymeru.cas.iitd.ernet.in_45587   caused collective abort of all ranks   exit status of rank 0: return code 1 Can anybody help. The required regcm.in and regcm.out file are attached. Abhishek Lodh Research Scholar Centre for Atmospheric Sciences Indian Institute of Technology,Delhi Hauz Khas,New Delhi - 110016 Contact No. - 9891656976 Email: abhishek_lodh@yahoo.co.in abhishek.lodh@gmail.com