Accession Number:

ADA621320

Title:

Attacking the One-Out-Of-m Multicore Problem by Combining Hardware Management with Mixed-Criticality Provisioning

Descriptive Note:

Conference paper preprint

Corporate Author:

NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF COMPUTER SCIENCE

Personal Author(s):

• Kim, Namhoon
• Ward, Bryan C.
• Chisholm, Micaiah
• Fu, Cheng-Yang
• Anderson, James H.
• Smith, F. D.

Report Date:

2015-05-01

Pagination or Media Count:

15.0

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.

Descriptors:

• *COMPUTER ARCHITECTURE
• *EMBEDDED SYSTEMS
• CASE STUDIES
• CENTRAL PROCESSING UNITS
• EXPERIMENTAL DESIGN
• INTERFERENCE
• KERNEL FUNCTIONS
• LINEAR PROGRAMMING
• MEMORY DEVICES
• MULTIPROCESSORS
• OPTIMIZATION
• PERFORMANCE(ENGINEERING)
• REAL TIME
• SCHEDULING
• SYSTEMS ANALYSIS
• TRADE OFF ANALYSIS
• WORKLOAD

Subject Categories:

• Operations Research
• Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE