This guide is one of a set of introductory user guides to the NCAR Computing Facility. It contains information on how to run programs on NCAR's Control Data Corporation 7600 computer and Cray Research, Incorporated, CRAY-1 computer. There are three sections. The first, Submitting and Monitoring Jobs, describes the Computing Facility's procedures for running jobs: how to submit decks, where to retrieve output, and how to monitor jobs. The second section, Deck Structure, compares deck structures for programs which will run on one or both of the NCAR mainframes. The last section, Reading Printed Output, is a description, with examples, of printed output from the two computers. The NCAR CDC 7600 computer is used largely for data processing; it handles all I/O processing at NCAR. It is also used as the front end machine for the CRAY-1 computer; there is no direct user access to the CRAY-1. The CRAY-1 computer is best suited for solving problems which require extensive numerical computations (e.g. large CPU time and small PPU time).
