Attacking the One-Out-Of-m Multicore Problem by Combining Hardware Management with Mixed-Criticality Provisioning
Abstract
The multicore revolution is having limited impact in safety-critical application domains. The key reason is the "one-out- of-m" problem: when checking real-time constraints on a multicore platform with m cores, analysis pessimism can easily negate the processing capacity of the additional m -- 1 cores. Two major approaches have been investigated previously to address this problem: mixed-criticality allocation techniques that seek to provision less-critical software components less pessimistically, and hardware-management techniques that seek to make the underlying platform itself more predictable. In this paper, the results of an experimental investigation are presented that shows that applying both approaches together can have a much greater impact than applying either alone. This investigation is based on a new variant of the MC2 (mixed-criticality on multicore) framework that enables tasks to be isolated by criticality level with respect to the hardware resources they access.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2015
- Accession Number
- ADA621320
Entities
People
- Bryan C. Ward
- Cheng-yang Fu
- F. D. Smith
- James H. Anderson
- Micaiah Chisholm
- Namhoon Kim
Organizations
- University of North Carolina at Chapel Hill