Overview
The problem based benchmark suite (PBBS) is designed to be an open
source repository to compare different parallel programming
methodologies in terms of performance and code quality. The
benchmarks define problems in terms of the function they implement and
not the particular algorithm or code they use. We encourage people to
implement the benchmarks using any algorithm, with any programming
language, with any form of parallelism (or sequentially), and for any
machine. The problems are selected so they:
 Are representative of a reasonably wide variety of realworld tasks
 The problem can be defined concisely
 Are simple enough that reasonably efficient solutions
can be implemented in 500 lines of code, but not trivial microbencharks
 Have outputs that can be easily tested for correctness and possibly quality
This is currently work in early progress, and these pages are preliminary.
The plan is to supply:
 The definition of the problems in terms of their function specification (the input they take and the required output given the input).

For each problem a weighted set of input distributions on which to test and time implementations.

Input generators for each of the input distributions.

Output testers for testing the correctness and/or quality of the output

A sequential and a parallel base implementation for each problem

A set of criteria for measuring the quality of code

A repository of submitted implementations.
Currently the benchmarks include the following:
 Comparison sort (SORT)
 Integer sort (ISORT)
 Remove Duplicates (RDUPS)
 Dictionary (RDUPS)
 Suffix Array (SA)
 Breadth First Search Tree (BFS)
 Maximal Independent Set (MIS)
 Maximal Matching (MIS)
 Minimum Spanning Forest (MSF)
 Spanning Forest (SF)
 Convex Hull (CH)
 Delaunay Triangulation (DT)
 Delaunay Refinement (DR)
 KNearest Neighbors (KNN)
 RayTriangle Intersection (RAY)
 Nbody Forces (NBODY)
These are described on the Benchmarks Page.
This project has been funded by the following sources:
Intel Labs Academic Research Office for the Parallel Algorithms for NonNumeric Computing Program,
National Science Foundation, and
IBM Research.