2023
DOI: 10.1109/tcad.2022.3223843
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Compact Functional Testing for Neuromorphic Computing Circuits

Abstract: We address the problem of testing Artificial Intelligence (AI) hardware accelerators implementing Spiking Neural Networks (SNNs). We define a metric to quickly rank available samples for training and testing based on their fault detection capability. The metric measures the inter-class spike count difference of a sample for the fault-free design. In particular, each sample is assigned a score equal to the spike count difference between the first two top classes. The hypothesis is that samples with small scores… Show more

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Cited by 8 publications
(4 citation statements)
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“…ATPG consisting of 5 neighbouring PEs is repeatedly 4) Functional test generation: Functional test generation aims at generating inputs, e.g., images, that are capable of sensitizing the fault and propagating its effect to the output, leading to a different prediction with respect to that of the nominal fault-free network. This approach has been demonstrated for ANNs [127], [146]- [149], including memristive crossbar array-based architectures [146], [147], [149], and for SNNs [150], [151]. As shown in Fig.…”
Section: B Dft and Atpgmentioning
confidence: 99%
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“…ATPG consisting of 5 neighbouring PEs is repeatedly 4) Functional test generation: Functional test generation aims at generating inputs, e.g., images, that are capable of sensitizing the fault and propagating its effect to the output, leading to a different prediction with respect to that of the nominal fault-free network. This approach has been demonstrated for ANNs [127], [146]- [149], including memristive crossbar array-based architectures [146], [147], [149], and for SNNs [150], [151]. As shown in Fig.…”
Section: B Dft and Atpgmentioning
confidence: 99%
“…Returning to the functional test generation methods in [127], [146]- [151] discussed in Section V-B4, as the resultant functional test set is compact, it can be also fed periodically during mission mode in idle times towards functional safety.…”
Section: On-line Test 1) Atpg and Functional Testingmentioning
confidence: 99%
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