Newsgroups: comp.parallel From: douglas-craig@CS.YALE.EDU (Craig Douglas) Subject: Comparison Paper of C-Linda, P4, POSYBL, PVM, and TCGMSG Organization: Yale University Computer Science Dept., New Haven, CT 06520-2158 Date: 28 Aug 1993 07:52:54 -0400 Parallel Programming Systems for Workstation Clusters Craig C. Douglas, Timothy G. Mattson, and Martin H. Schultz Yale University Department of Computer Science Research Report YALEU/DCS/TR-975, August, 1993. Abstract: In this paper, we describe experiments comparing the communication times for a number of different network programming environments on isolated 2 and 4 node workstation networks. In addition to simplified benchmarks, a real application is used in one of these experiments. From our results, it is clear that the cost of buffer management at either end of the communication is more important than originally expected. Furthermore, as communication patterns become more complex, the performance differences between these environments decreased substantially. When we compared timings for an actual application program, the differences essentially disappeared. This shows the danger of relying solely on simplified benchmarks. It is available through anonymous ftp on casper.cs.yale.edu in the file pub/tr975.ps.