Frederick C. Wong

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We present a study of the architectural requirements and scalability of the NAS Parallel Benchmarks. Through direct measurements and simulations, we identify the factors which affect the scalability of benchmark codes on two relevant and distinct platforms; a cluster of workstations and a ccNUMA SGI Origin 2000. We find that the benefit of increased global(More)
A novel gene, hetF, was identified as essential for heterocyst development in the filamentous cyanobacterium Nostoc punctiforme strain ATCC 29133. In the absence of combined nitrogen, hetF mutants were unable to differentiate heterocysts, whereas extra copies of hetF in trans induced the formation of clusters of heterocysts. Sequences hybridizing to a hetF(More)
The UC Berkeley Network of Workstations (NOW) project demonstrates a new approach to largescale system design enabled by technology advances that provide inexpensive, low latency, high bandwidth, scalable interconnection networks. This paper provides an overview of the hardware and software architecture of NOW and reports on the performance obtained at each(More)
With the growing importance of fast system area networks in the parallel community, it is becoming common for message passing programs to run in multi-programming environments. Competing sequential and parallel jobs can distort the global coordination of communicating processes. In this paper, we describe our implementation of MPI using implicit information(More)
A viral agent was isolated from the fetal liver of an aborted equine fetus. The isolate hemagglutinated red blood cells from guinea pig, rhesus monkey and rooster. By hemagglutination inhibition tests, the isolate was shown to be antigenically distinct from parvoviruses of bovine and canine origin. Specific hemagglutination inhibiting antibody against the(More)
Isolations of rubella virus and the successful passage of this virus on grivet monkey kidney cells were reported in 1962--1963 by Parkman, Buescher, Sigurdardottir and co-workers (1, 2, 3, 4). No report of quantitative growth studies has been published to date. This report describes the results of our growth studies of rubella virus on this type of cell(More)
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