Thanks for the reply.
Yes, I will try with the full paths and also play around with the job scheduler.
I shall be glad if you can kindly send me the MPI abinitio patch, since the serial run really takes a lot of time. Please send me the patch at my registered email id (email@example.com you can also copy it to firstname.lastname@example.org). Please let me know how to install the patch and run it.
Thanks a lot again.