Implementation and Evaluation of a Hardware Decentralized Synchronization Lock for MPSoCs

France-Pillois, Maxime; Martin, Jérôme; Rousseau, Frédéric

doi:10.1109/ipdps47924.2020.00117

Cited by 1 publication

(1 citation statement)

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“…Moreover, this tool enables the accurate study of the memory access pattern, or the networkon-chip usage, of applications or services. Thus, this valuable piece of information opens new optimization perspectives, for example, the improvement of the synchronization lock service based on the lock access patterns [8].…”

Section: Another Emulatormentioning

confidence: 99%

A Non-Intrusive Tool Chain to Optimize MPSoC End-to-End Systems

France-Pillois

Martin

Rousseau

2021

ACM Trans. Archit. Code Optim.

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Multi-core systems are now found in many electronic devices. But does current software design fully leverage their capabilities? The complexity of the hardware and software stacks in these platforms requires software optimization with end-to-end knowledge of the system. To optimize software performance, we must have accurate information about system behavior and time losses. Standard monitoring engines impose tradeoffs on profiling tools, making it impossible to reconcile all the expected requirements: accurate hardware views, fine-grain measurements, speed, and so on. Subsequently, new approaches have to be examined. In this article, we propose a non-intrusive, accurate tool chain, which can reveal and quantify slowdowns in low-level software mechanisms. Based on emulation, this tool chain extracts behavioral information (time, contention) through hardware side channels, without distorting the software execution flow. This tool consists of two parts. (1) An online acquisition part that dumps hardware platform signals. (2) An offline processing part that consolidates meaningful behavioral information from the dumped data. Using our tool chain, we studied and propose optimizations to MultiProcessor System on Chip (MPSoC) support in the Linux kernel, saving about 60% of the time required for the release phase of the GNU OpenMP synchronization barrier when running on a 64-core MPSoC.

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Section: Another Emulatormentioning

confidence: 99%