This paper describes the Time Warp Operating System, under development for three years at the Jet Propulsion Laboratory for the Caltech Mark III Hypercube multi-processor. Its primary goal is concurrent execution of large, irregular discrete event simulations at maximum speed. It also supports any other distributed applications that are synchronized by virtual time.

article Free Access Share on Wind Tunnel Data Reduction Using Paper-Tape Storage Media Authors: William R. Hoover Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CaliforniaView Profile , John J. Wedel Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CaliforniaView Profile , Joseph R. Bruman Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CaliforniaView Profile Authors Info & Claims Journal of the ACMVolume 3Issue 2pp 101–109https://doi.org/10.1145/320825.320830Published:01 April 1956Publication History 4citation365DownloadsMetricsTotal Citations4Total Downloads365Last 12 Months10Last 6 weeks2 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF

A new high-speed data-accumulation system has been designed for a supersonic wind tunnel. The data are recorded on punched paper tape for direct input into an Electrodata digital computer. Extensive presentation of data is available to the wind-tunnel operators. All data are typed by an electric typewriter, and an automatic plotting machine plots several of the data words as functions of the independent-variable data word. Special codes to control the computer are automatically punched into the tape. The preliminary source of the data may be either manually operated keyboards or shaft-position digitizers. The new system increases the wind-tunnel pace, eliminates intermediate data handling before computation, and lowers the cost of data reduction.