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Performance

• ``GHC in SICStus:''

  time 17.5 6.4 2.7

  space 3n+1 2n+1

  oper. 456 125 3.6 Bounded buffer protocol (30 messages, 3 places)

  time 21.0 6.6 3.2

  space 6n-5 2n+4

  oper. 699 129 5.4 One-many comm. w/acknowledge (20 messages, two readers)

  time 25.1 4.6 5.45

  space 10n+1 2n+1

  oper. 910 109 8.3

• ``DDAS in &-Prolog:''

  Benchmark 1 Proc. 2 Proc. 5 Proc. 9 Proc.

  qs-iap 90 (1) 50 (1.8) 50 (1.8) 50 (1.8)

  qs-conc1 320 (1) 170 (1.8) 80 (4) 60 (5.3)

  qs-conc2 400 (1) 210 (1.9) 100 (4) 80 (5)

  nrev 120 (1) 80 (1.5) 30 (4) 30 (4)

  • Some optimizations (e.g. no token passing).
  • Very naive implementation of kernel language.

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