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MNOC: A Network on Chip for Monitors
S. Madduri, R. Vadlamani, W. Burleson, R. Tessier
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| As the size and diverse use of systems-on-chip expand, the importance of
run-time monitoring of correct functionality and system performance
increases. In many current SoCs, the architectural interface to on-chip
monitors is ad hoc and inefficient. In this paper, a new architectural
approach which advocates the use of a separate low-overhead subsystem for
monitors is described. A key aspect of this approach is an on-chip
interconnect specifically designed for monitor data with different
priority levels. The efficiency of our monitor interconnect is assessed
for a multicore system using both an interconnect and a system-level
simulator. Experimental results show that the new low-overhead monitor
interconnect allows for an improvement in performance for a multicore
processor which performs thermal-aware task migration. |
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