Abstract
Several analog photonic architectures based on microring resonators (MRRs) have been proposed to accelerate general matrix-matrix multiplications (GEMMs) that compose deep neural networks with exceptional throughput and energy efficiency. To implement GEMM functions, these MRR-based architectures, in general, manipulate optical signals in five different ways: (i) Splitting (copying) of multiple optical signals to achieve a certain fan-out, (ii) Aggregation (multiplexing) of multiple optical signals to achieve a certain fan-in, (iii) Modulation of optical signals to imprint input values onto analog signal amplitude, (iv) Weighting of modulated optical signals to achieve analog input-weight multiplication, (v) Summation of optical signals. Prior accelerators undertake the first four ways of signal manipulation in an arbitrary order ignoring the possible impact of the order of these manipulations on their performance. In this paper, we conduct a detailed analysis of accelerator organizations with three different orders of these manipulations: (1) Modulation-Aggregation-Splitting-Weighting (MASW), (2) Aggregation-Splitting-Modulation-Weighting (ASMW), and (3) Splitting-Modulation-Weighting-Aggregation (SMWA). We show that these organizations affect the crosstalk noise and optical signal losses in different magnitudes, which renders these organizations with different levels of processing parallelism at the circuit level, and different magnitudes of throughput and energy-area efficiency at the system level. Our evaluation results for four CNN models show that the SMWA organization achieves up to 4.4 ×, 5 × , and 5.2 × better throughput, energy efficiency, and area efficiency, respectively, compared to the ASMW and MASW organizations on average.
Original language | English |
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Title of host publication | Proceedings of the 25th International Symposium on Quality Electronic Design, ISQED 2024 |
ISBN (Electronic) | 9798350309270 |
DOIs | |
State | Published - 2024 |
Event | 25th International Symposium on Quality Electronic Design, ISQED 2024 - Hybrid, San Francisco, United States Duration: Apr 3 2024 → Apr 5 2024 |
Publication series
Name | Proceedings - International Symposium on Quality Electronic Design, ISQED |
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ISSN (Print) | 1948-3287 |
ISSN (Electronic) | 1948-3295 |
Conference
Conference | 25th International Symposium on Quality Electronic Design, ISQED 2024 |
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Country/Territory | United States |
City | Hybrid, San Francisco |
Period | 4/3/24 → 4/5/24 |
Bibliographical note
Publisher Copyright:© 2024 IEEE.
ASJC Scopus subject areas
- Hardware and Architecture
- Electrical and Electronic Engineering
- Safety, Risk, Reliability and Quality