< language > A parallel language loosely based on ML , developed at Carnegie Mellon University by the SCandAL project. NESL integrates parallel algorithms , functional languages and implementation techniques from the system's community.
Nested data parallelism offers concise code that is easy to understand and debug and suits irregular data structures such as trees , graphs or sparse matrices .
NESL's language based performance model is a formal way to calculate the "work" and "depth" of a program. These measures can be related to running time on a parallel computer .
NESL was designed to make parallel programming easy and portable. Algorithms are typically more concise in NESL than in most other parallel programming languages and the code resembles high-level pseudocode . This places more responsibility on the compiler and run-time system for achieving good efficiency.
NESL currently runs on Unix workstations , the IBM SP-2 , the Thinking Machines CM5 , the Cray C90 and J90 , the MasPar MP2 , and the Intel Paragon . Work is underway (April 1997) on a portable MPI back end , and an implementation for symmetric multiprocessors , such as the SGI Power Challenge or the DEC AlphaServer .
Latest version: Release 3.1, as of 1995-11-01.
Home .
["NESL: A Nested Data-Parallel Language", Guy Blelloch, CMU-CS-93-129, April 1993].
(1997-04-13)