Accession Number : ADA305212

Title :   Real-Time Parallel Software Design Case Study: Implementation of the RASSP SAR Benchmark on the Intel Paragon.

Descriptive Note : Final technical rept. Oct 94-Sep 95,

Corporate Author : MITRE CORP BEDFORD MA

Personal Author(s) : Brown, Curtis P. ; Games, Richard A. ; Vaccaro, John J.

PDF Url : ADA305212

Report Date : JAN 1996

Pagination or Media Count : 31

Abstract : A software design process for mapping real time applications onto massively parallel processors is described. The design methodology incorporates a software test bench used to evaluate the level of real-time performance the processing nodes are capable of delivering. The test bench results incorporate the overheads of periodic processing (simple communication, control flow, buffering, etc.) and therefore provide realistic performance levels. The final integration step maintains the simple test bench interfaces and reduces the complexity of integrating the components to satisfy the timing requirements of the overall application. The process is applied to implement the RASSP SAR benchmark on an Intel Paragon. The initial implementation uses 12 Paragon GP nodes for a single polarization. Under oSF/1, this 12 node configuration satisfies all the real-time requirements. Under SUNMOS, a streamlined high performance operating system available on the Paragon, the throughput improves significantly with sustained processor utilization approaching 40%. A projected implementation of the RASSP SAR benchmark on the Embedded Touchstone suggests that all three polarizations can be processed (including I/O) using 14 out of its 16 MP nodes.

Descriptors :   *SOFTWARE ENGINEERING, *REAL TIME, *PARALLEL PROCESSORS, *SYNTHETIC APERTURE RADAR, *BENCH TESTS, COMPUTER PROGRAMS, CONTROL, REQUIREMENTS, POLARIZATION, INTERFACES, TEST EQUIPMENT, NODES, CASE STUDIES, INTEGRATION, EMBEDDING, COMMUNICATION AND RADIO SYSTEMS, FLOW, MAPPING, UTILIZATION, TIME STUDIES.

Subject Categories : Computer Programming and Software
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE