Tracing Research Using Field Programmable Gate Arrays for Aviation Applications

Abstract

Multicore operating system is becoming more significant topic in the developing aviation industry due to the high performance they provide. However, it also brings some difficulties that slow down these developments. Multicore processors are expected to be deterministic and have high reliability because they take on critical tasks in avionic systems. Authorities working in this direction recommend monitoring real-time CPU performances externally with a different system. Interpreting the information obtained at the time of operation and making inferences about the performance of the system is among the suggestions of this authorities. One of the reasons why multi-core processors are not reliable is the conflict experienced due to the common cache memories they use. Therefore, one of the information that needs to be obtained in the reliability is the occupancy rates of the memories used by the CPU. In addition, inferences can also be made about the performance of the CPU by monitoring the memory. In this paper, a tracing research using field programmable gate arrays (FPGAs) for aviation applications is presented. Successful results were obtained by carrying out studies considering the configuration of using two FPGAs in the simulation environment. One of the FPGAs represents the CPU and the cache memory used by the CPU and the other FPGA has the task of monitoring.