RT Journal Article
T1 Radiation Testing of a Multiprocessor Macrosynchronized Lockstep Architecture With FreeRTOS
A1 Avilés, Pablo M.
A1 Lindoso Muñoz, Almudena
A1 Belloch Rodríguez, José Antonio
A1 García Valderas, Mario
A1 Morilla, Yolanda
A1 Entrena Arrontes, Luis Alfonso
AB Nowadays, high-performance microprocessors are demanded in many fields, including those with high-reliability requirements. Commercial microprocessors present a good tradeoff between cost, size, and performance, albeit they must be adapted to satisfy the reliability requirements when they are used in harsh environments. This work presents a high-end multiprocessor hardened with macrosynchronized lockstep and additional protections. A commercial dual-core Advanced RISC Machine (ARM) cortex A9 has been used as a case study and a complete hardened system has been developed. Evaluation of the proposed hardened system has been accomplished with exhaustive fault injection campaigns and proton irradiation. The hardening approach has been accomplished for both baremetal applications and operating system (OS)-based. The hardened system has demonstrated high reliability in all performed experiments with error coverage up to 99.3% in the irradiation experiments. Experimental irradiation results demonstrate a cross-sectional reduction of two orders of magnitude.
PB IEEE
SN 0018-9499
YR 2021
FD 2021-11-17
LK https://hdl.handle.net/10016/34578
UL https://hdl.handle.net/10016/34578
LA eng
NO This work was supported in part by the Spanish Ministry of Science and Innovation under Project PID2019-106455GB-C21and in part by the Community of Madrid under Project 49.520608.9.18
DS e-Archivo
RD 1 sept. 2024