CS267: Lecture 10
October 1, 2001
Lecturer: Kathy Yelick
We introduce the first of two "global address space" languages, UPC.
UPC is a SPMD language that allow programmers to build distributed data
structures using pointers and distributed arrays. The array mechanisms
allow for several different kinds of layouts. Some simple matrix examples
are used to illustrate the language. UPC has a rather unusual consistency
model, which the programer is able to control through keywords and pragmas.
The lecture contains some performance experiments from Split-C, one of the
predecessors to UPC, to motivate these memory models. UPC currently runs
on the T3E and on Compaq clusters, although implementations are underway on
several other platforms.
These notes steal liberally from lectures a UPC
lecture by Tarek El-Ghazawi
(GMU), Bill Carlson (IDA-CCS), Greg
Fischer (Cray Inc.)
2001 Lecture Notes
Homework 2: Sharks and Fish in threads and MPI (due 10/10)