Petri-nets as an Intermediate Representation for Heterogeneous Architectures

Add to your list(s) Download to your calendar using vCal

• Pete Calvert (Computer Lab, Cambridge)
• Friday 18 February 2011, 15:15-16:15
• SS03, Computer Laboratory.

If you have a question about this talk, please contact Dominic Orchard.

Modern computer systems are not only increasingly parallel, but also heterogeneous. Common examples include CPU -GPU combinations and IBM ’s Cell architecture. Placement, scheduling and indeed algorithm choices affect the overall execution time and, for portable programs, must adapt to the target machine at either load-time or run-time. We see these choices as preserving I/O determinism but exposing performance non-determinism.

We use Petri-nets as an intermediate representation for programs to give a unified view of performance non-determinism, including how to construct such nets given a model of a heterogeneous architecture. This includes some scenarios which other models cannot support.

Heuristics for finding optimal executions in these nets would not only solve the placement problem, but also programming model specific questions such as “which task should be given a lock first”.

This talk will be slightly less formal than normal, with more chance for discussion.

This talk is part of the Computer Laboratory Programming Research Group Seminar series.

This talk is included in these lists:

• All Talks (aka the CURE list)
• Cambridge talks
• Computer Laboratory Programming Research Group Seminar
• Department of Computer Science and Technology talks and seminars
• Interested Talks
• SS03, Computer Laboratory
• School of Technology
• Trust & Technology Initiative - interesting events
• bld31

Note that ex-directory lists are not shown.