Accession Number : ADA290059

Title :   On Extending Parallelism to Serial Simulators.

Descriptive Note : Contractor rept.,

Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA

Personal Author(s) : Nicol, David ; Heidelberger, Philip

PDF Url : ADA290059

Report Date : DEC 1994

Pagination or Media Count : 18

Abstract : This paper describes an approach to discrete event simulation modeling that appears to be effective for developing portable and efficient execution of models of large distributed systems and communication networks. In this approach. the modeler develops sub-models using an existing sequential simulation modeling tool, using the full expressive power of the tool. A set of modeling language extensions permit automatically synchronized communication between sub-models; however the automation requires that any such communication must take a non-zero amount of simulation time. Within this modeling paradigm, a variety of conservative synchronization protocols can transparently support conservative execution of sub-models on potentially different processors. A specific implementation of this approach. U P.S. (Utilitarian Parallel Simulator), is described, along with performance results on the Intel Paragon.

Descriptors :   *COMPUTERIZED SIMULATION, *DISTRIBUTED DATA PROCESSING, *PARALLEL PROCESSING, *SERIAL PROCESSORS, SOFTWARE ENGINEERING, SIMULATORS, TOOLS, SEQUENCES, TIME, COMMUNICATIONS NETWORKS, COMMUNICATION AND RADIO SYSTEMS, SYNCHRONISM, ADAPTERS, UTILIZATION.

Subject Categories : Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE