Author(s)
Side-effects in PloSys OR-parallel Prolog on distributed memory machines
Project CNRS-INRIA APACHE
LMC-IMAG, B.P. 53, F-38-41
Grenoble Cedex 9, Franceee
{Eric.Morel,Jaques.Briat,Jacques.Chassin,Claudio.Geyer}@imag.fr
Abstract
The aim of the logic programming system PloSys is to offer most Prolog
functionalities on distributed memory parallel computers as well as
networks of personal computers. The PloSys computational model
exploits OR-parallelism. It is designed to implement cut and
side-effects while keeping low the number of messages exchanged
between processors. It is a multi-sequential model based on copying.
Scheduling is centralised as is the management of cut and
side-effects. The scheduler keeps up to date the knowledge of
the left-most worker in the scope of each cut. A PloSys prototype was
implemented and its first results, on IBM SP-1, are promising.
Accepted Papers