A Proof of Concept for Optimizing Task Parallelism by Locality Queues

Details A Proof of Concept for Optimizing Task Parallelism by Locality Queues A Proof of Concept for Optimizing Task Parallelism by Locality Queues

2009-02-11

arxiv.org/abs/0902.1884v1

Computer Science

Performance

8 pages, 2 figures

Scientific paper

Task parallelism as employed by the OpenMP task construct, although ideal for tackling irregular problems or typical producer/consumer schemes, bears some potential for performance bottlenecks if locality of data access is important, which is typically the case for memory-bound code on ccNUMA systems. We present a programming technique which ameliorates adverse effects of dynamic task distribution by sorting tasks into locality queues, each of which is preferably processed by threads that belong to the same locality domain. Dynamic scheduling is fully preserved inside each domain, and is preferred over possible load imbalance even if non-local access is required. The effectiveness of the approach is demonstrated using a blocked six-point stencil solver as a toy model.

Affiliated with

Also associated with

No associations

Rating

A Proof of Concept for Optimizing Task Parallelism by Locality Queues does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Proof of Concept for Optimizing Task Parallelism by Locality Queues, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Proof of Concept for Optimizing Task Parallelism by Locality Queues will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-487943