Cover: NOSY: A Core-saving Operating System.

NOSY: A Core-saving Operating System.

Published 1967

by Ivan L. Finkle, L. Scantlin

Purchase Print Copy

 Format Price
Add to Cart Paperback12 pages $20.00

A revision of P-3168 to reflect the change in Rand's computer system from an IBM 7040 coupled to a 7044, to the 7044 alone. This paper describes the NOSY (NonSYS) software for use with programs that exceed available storage on the 7044. Converting codes from FORTRAN II to FORTRAN IV causes loss of core storage, because the IV compiler in most cases produces more instruction words than the II compiler, and because the IBSYS nucleus requires so much storage space. The NOSY method eliminates the nucleus during execution, thus releasing core storage at the cost of less efficient input/output. It was devised originally for a Rand two-dimensional hydrodynamic model that continued to exceed available storage even when a chaining procedure was used. 12 pp.

This report is part of the RAND paper series. The paper was a product of RAND from 1948 to 2003 that captured speeches, memorials, and derivative research, usually prepared on authors' own time and meant to be the scholarly or scientific contribution of individual authors to their professional fields. Papers were less formal than reports and did not require rigorous peer review.

This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit

RAND is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.