An Efficient Degraded Deductive Fault Simulator for Small-Delay Defects
An Efficient Degraded Deductive Fault Simulator for Small-Delay Defects
复制标题
针对小延迟缺陷的高效降级演绎故障模拟器
DOI：
10.1109/access.2020.3037292
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发表时间：
2020
期刊：
影响因子：
3.9
通讯作者：
Cai Shuo
中科院分区：
文献类型：
--
作者：
Liu Tieqiao;Yu Ting;Wang Shuo;Cai Shuo
提出了一种针对小延迟缺陷的高效降级演绎模拟器。该方法考虑了再收敛敏感化和基于风险检测的条件，为小延迟缺陷提供了快速、准确的仿真结果。针对具有不同故障影响的故障，提出了单独的仿真策略。对于故障影响重新收敛的扇出杆，采用了串联仿真技术。对于其他故障，提出了一种演绎仿真技术来加速仿真。与以往的工作不同，该方法不再对扇出重收敛杆上的所有故障进行串联仿真，而是只对故障效应的重收敛进行仿真，其他故障采用退化演绎技术并行仿真，省去了“与”运算，故障表的传播比传统的演绎法简单。实验结果表明，所提出的模拟器能够进一步提高故障模拟的效率。与串行模拟方法相比，平均加速比提高了28.3倍；与基于关键路径跟踪的方法相比，平均加速比提高了3.92倍。
An efficient degraded deductive simulator for small delay defects is proposed. The proposed method takes into account the conditions of re-convergence sensitization and hazard-based detection, providing fast and accurate simulation results for small delay defects. Separate simulation strategies for faults with different fault effects are proposed. For faults on fault effects re-convergent fan-out stems, the serial simulation technique is applied. For other faults, a deductive simulation technique is proposed to accelerate the simulation. Different from previous works, serial simulations are carried out no longer for all faults on fan-out re-convergent stems, but only for fault effects re-convergences, and the other faults are parallel simulated with the degraded deductive technique, which eliminates “AND” operation and the propagation of fault-list is simpler than conventional deductive ones. Experimental results demonstrate that the proposed simulator that can further accelerate the fault simulation in efficiency. It achieves a 28.3X speedup on average compared with the serial simulation method, and a 3.92X speedup on average compared with the critical path tracing based method.
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