研究発表

Responsive Link is a communication standard as specified in ISO/IEC 24740:2008 for distributed real-time environments. Responsive Link has multiple features to meet both hard and soft real-time requirements. Unfortunately, current real-time operating systems do not support the main features of Responsive Link. In addition, distributed real-time systems in noisy environments require revealing the tolerance of Responsive Link to achieve correct communication. We present APIs for Responsive Link in RT-Est real-time operating system. Using the APIs, users can make use of the main features of Responsive Link easily. Experimental evaluations perform the voltage tolerance test against noise and reveal the tolerance of Responsive Link.

This paper performs experimental evaluations of global and partitioned semi-fixed-priority scheduling algorithms in the extended imprecise computation model on multicore systems. Experimental results show that semi-fixed-priority scheduling has comparable overhead to fixed-priority scheduling. In addition, global semi-fixed-priority scheduling has lower overhead than partitioned semi-fixed-priority scheduling.

In this paper, we present a RT-DVFS algorithm called Hetero Efficiency to Logical Processor (HeLP) which can reduce power consumption easily and effectively in prioritized SMT processors.

In this paper, we propose an adaptive on-chip router with Predictor for Regional Congestion (PRC) in order to improve the network throughput with modest hardware overhead.