A performance analysis of the PASLIB version 2.1X SEND and RECV routines on the finite element machine

The Finite Element Machine is an experimental array processor designed to support research in parallel algorithms and architectures. This report presents a case study of communications using the SENDa and RECV system software routines on the Finite Element Machine, followed by a discussion of the effect of I/O performance on the efficiency of parallel algorithms

The d-arabitol operon of Klebsiella aerogenes

Imperial Users onl

System software for the finite element machine

The Finite Element Machine is an experimental parallel computer developed at Langley Research Center to investigate the application of concurrent processing to structural engineering analysis. This report describes system-level software which has been developed to facilitate use of the machine by applications researchers. The overall software design is outlined, and several important parallel processing issues are discussed in detail, including processor management, communication, synchronization, and input/output. Based on experience using the system, the hardware architecture and software design are critiqued, and areas for further work are suggested

Probabilistic Aspects Of Brittle Fracture In Pressure-Vessel Steels

This paper addresses issues relating to the treatment of distributions of tensile strength, local cleavage fracture stress, and fracture toughness in pressure-vessel steels and weld deposits. Attention is drawn to the differences in behaviour between steels which have "quasi-homogeneous" microstructures and those which exhibit spatial heterogeneity. The differences are of greatest significance when statistical analysis is applied to distributions to derive "lower-bound" values. The findings from model systems are used to re-assess an earlier analysis of Weibull fracture stress and to comment on the use of a Master Curve methodology in the analysis of the "Euro" fracture toughness data-set

Acoustic and aerodynamic performance investigation of inverted velocity profile coannular plug nozzles, comprehensive data report, volume 2

Volume 2 of a three volume report is presented. Volume 2 presents acoustic data comparisons in graphic form

Microstructural Fracture Criteria in Engineering Allovs

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