WoTUG - The place for concurrent processes

Paper Details

  title = "{CSP}/occam on {S}hared {M}emory {M}ultiprocessor {W}orkstations",
  author= "Vella, Kevin and Welch, Peter H.",
  editor= "Cook, Barry M.",
  pages = "87--120",
  booktitle= "{P}roceedings of {W}o{TUG}-22: {A}rchitectures, {L}anguages and {T}echniques for {C}oncurrent {S}ystems",
  isbn= "90 5199 480 X",
  year= "1999",
  month= "mar",
  abstract= "This paper outlines the design and performance of a system
     for executing occam programs on multiprogrammed shared
     memory multiprocessor workstations. In particular, a fast
     SMP scheduler that executes process code generated by the
     standard KRoC compiler (originally designed for
     uniprocessors) is described; new wait-free
     multiprocessor-safe algorithms for both committed and
     alternative CSP channel communication operations are
     presented; a technique for allowing surplus processors to
     idle altruistically under a multiprogrammed regime is
     outlined. The run-time performance of the system is measured
     under a range of process granularities on one to four
     processors, using a synthetic benchmark. The performance of
     two real applications, namely Quickersort and matrix
     multiplication, is then analysed in some detail. Finally,
     alternative scheduling strategies to further improve the
     scalability of the system under conditions of very fine
     process granularity are proposed."

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