A photonic tensor core bridging fault tolerance apparatus

Abstract

The application provides a bridging fault tolerance simulation device and control method of a photonic tensor core. The structure and method examples disclosed in the present application include a 2*2 matrix and 2*1 vector multiplication operation based on a micro-ring resonator structure, simulate a matrix multiplication vector operation process of a photonic tensor core, parallel two photonic tensor core structures, one of which is a normal working structure and the other is a fault tolerance structure, the two structures do not work at the same time, the working state of the two structures is switched through GST as an optical switch, whether a fault occurs is judged by comparing the output signal with the normal output signal, and fault tolerance measures are adopted if a fault occurs.

Description

Technical Field

[0002] This invention relates to the field of photonic tensor nuclei, and more particularly to a fault-tolerant device and control method for bridging photonic tensor nuclei. Background Technology

[0004] With the continuous development of chip technology, chip integration is becoming increasingly higher, making internal chip failures more likely. MMRs are temperature-sensitive, and as the temperature rises, MMRs are prone to bridging failures. Since bridging failures have a high probability of occurrence and affect the normal operation of photonic tensor kernels, fault-tolerant structures for bridging failures of photonic tensor kernels play an important role. Summary of the Invention

[0006] To address the aforementioned problems, the purpose of this invention is to provide a weighted, adjustable photon tensor kernel bridging fault simulation device and control method. To achieve this objective, the invention adopts the following technical solution: a photon tensor kernel bridging fault tolerance device, characterized in that: the photon tensor kernel bridging fault tolerance device simulates fault tolerance measures when a bridging fault occurs during the photon tensor kernel operation, which performs optical operations on a 2×2 matrix and a 2×1 vector. The photon tensor kernel consists of 8 microring resonators, wherein the bridging fault is caused by the failure of a single microring resonator. The photon tensor kernel bridging fault tolerance device includes 2 normal operation units, 2 fault tolerance units, and 2 optical switching units.

[0007] A fault-tolerant device for bridging photonic tensor kernels is characterized in that: the fault-tolerant device for bridging photonic tensor kernels, which perform optical operations on 2×2 matrices and 2×1 vectors, simulates fault-tolerant measures when bridging faults occur during photonic tensor kernel operations. The photonic tensor kernel consists of eight microring resonators, wherein the bridging fault is caused by the failure of a single microring resonator. The fault-tolerant device for bridging photonic tensor kernels includes two normal operation units, two fault-tolerant units, and two optical switching units.

[0008] The normal operating unit includes eight micro-ring resonators and four weighting elements. The eight micro-ring resonators are micro-ring resonator one, micro-ring resonator two, micro-ring resonator three, micro-ring resonator four, micro-ring resonator five, micro-ring resonator six, micro-ring resonator seven, and micro-ring resonator eight. The four weighting elements are weighting element one, weighting element two, weighting element three, and weighting element four.

[0009] The fault-tolerant unit includes eight fault-tolerant micro-ring resonators and four fault-tolerant weighting elements. The eight fault-tolerant micro-ring resonators are referred to as fault-tolerant micro-ring resonator one, fault-tolerant micro-ring resonator two, fault-tolerant micro-ring resonator three, fault-tolerant micro-ring resonator four, fault-tolerant micro-ring resonator five, fault-tolerant micro-ring resonator six, fault-tolerant micro-ring resonator seven, and fault-tolerant micro-ring resonator eight. The four weighting elements are referred to as fault-tolerant weighting element one, fault-tolerant weighting element two, fault-tolerant weighting element three, and fault-tolerant weighting element four.

[0010] The optical switch unit includes eight optical switches, namely optical switch one, optical switch two, optical switch three, optical switch four, optical switch five, optical switch six, optical switch seven, and optical switch eight.

[0011] The system output terminals include system output terminal one and system output terminal two.

[0012] The optical switch has one input terminal connected to the system input terminal, and one output terminal connected to one input terminal of the microring resonator. The optical switch has two input terminals connected to the system input terminal, and one output terminal connected to one output terminal of the fault-tolerant microring resonator. The optical switch has three input terminals connected to four output terminals of the microring resonator, and one output terminal connected to one system output terminal. The optical switch also has four input terminals connected to four output terminals of the fault-tolerant microring resonator, and one output terminal connected to one system output terminal. The optical switch five input terminal is connected to the system input terminal, the optical switch five output terminal is connected to the micro-ring resonator five input terminal, the optical switch six input terminal is connected to the system input terminal, the optical switch six output terminal is connected to the fault-tolerant micro-ring resonator five input terminal, the optical switch seven input terminal is connected to the micro-ring resonator eight output terminal, the optical switch seven output terminal is connected to the system output terminal two, the optical switch eight input terminal is connected to the fault-tolerant micro-ring resonator eight output terminal, and the optical switch eight output terminal is connected to the system output terminal two.

[0013] The output terminal of the microring resonator is connected to the input terminal of the weighting element. A direct-through terminal of the microring resonator is connected to the input terminal of the second microring resonator. The output terminal of the second microring resonator is connected to the input terminal of the second weighting element. The direct-through terminal of the second microring resonator is left floating. The input terminal of the third microring resonator is connected to the output terminal of the first weighting element. The direct-through terminal of the third microring resonator is left floating. The output terminal of the third microring resonator is connected to the output terminal of the fourth microring resonator. The input terminal of the fourth microring resonator is connected to the output terminal of the second weighting element. The direct-through terminal of the fourth microring resonator is connected to the input terminal of the first weighting element. The output terminal of the microring resonator is connected to the input terminal of the weighting element. The through terminal of the microring resonator is connected to the input terminal of the microring resonator. The output terminal of the microring resonator is connected to the input terminal of the weighting element. The through terminal of the microring resonator is left floating. The input terminal of the microring resonator is connected to the output terminal of the weighting element. The through terminal of the microring resonator is left floating. The output terminal of the microring resonator is connected to the output terminal of the microring resonator. The input terminal of the microring resonator is connected to the output terminal of the weighting element. The through terminal of the microring resonator is connected to the input terminal of the weighting element.

[0014] The first output terminal of the fault-tolerant microring resonator is connected to the first input terminal of the fault-tolerant weighting element; the direct-through terminal of the fault-tolerant microring resonator is connected to the second input terminal of the fault-tolerant microring resonator; the second output terminal of the fault-tolerant microring resonator is connected to the second input terminal of the fault-tolerant weighting element; the second direct-through terminal of the fault-tolerant microring resonator is left floating; the third input terminal of the fault-tolerant microring resonator is connected to the first output terminal of the fault-tolerant weighting element; the third direct-through terminal of the fault-tolerant microring resonator is left floating; the third output terminal of the fault-tolerant microring resonator is connected to the fourth output terminal of the fault-tolerant microring resonator; the fourth input terminal of the fault-tolerant microring resonator is connected to the second output terminal of the fault-tolerant weighting element; and the fourth direct-through terminal of the fault-tolerant microring resonator is connected to the first input terminal of the fault-tolerant weighting element. The fault-tolerant microring resonator's fifth output terminal is connected to the fault-tolerant weighting element's third input terminal; the fault-tolerant microring resonator's fifth through terminal is connected to the fault-tolerant microring resonator's sixth input terminal; the fault-tolerant microring resonator's sixth output terminal is connected to the fault-tolerant weighting element's fourth input terminal; the fault-tolerant microring resonator's sixth through terminal is left floating; the fault-tolerant microring resonator's seventh input terminal is connected to the fault-tolerant weighting element's third output terminal; the fault-tolerant microring resonator's seventh through terminal is left floating; the fault-tolerant microring resonator's seventh output terminal is connected to the fault-tolerant microring resonator's eighth output terminal; the fault-tolerant microring resonator's eighth input terminal is connected to the fault-tolerant weighting element's fourth output terminal; and the fault-tolerant microring resonator's eighth through terminal is connected to the fault-tolerant weighting element's third input terminal. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the photon tensor kernel fault-tolerant structure of the 2×2 matrix and 2×1 vector of the present invention.

[0017] Figure 2 This is a schematic diagram of the structural unit of the present invention.

[0018] Figure 3 This is a schematic diagram of the microring resonator of the present invention. Detailed Implementation

[0020] To provide a more detailed description of the solutions and advantages of the present invention, the present invention will be further explained and illustrated below with reference to the accompanying drawings and embodiments. The specific embodiments shown herein are merely illustrative of the present invention and are not intended to limit its scope of application.

[0021] The principle of matrix-vector operations is to implement an input matrix. and an input vector The multiplication operation between them is used to obtain the output vector Y, and the specific calculation formula is as follows:

[0022]

[0023] like Figure 3 The photon tensor kernel fault simulation device shown includes a normal operation unit 1, a fault-tolerant unit 2, an optical switch unit 3, and a fault simulation input unit 1 for input signals. 1, The voltage is provided by a voltage source. Switches S1 and S3 select the fault condition of the MRR, while S2 and S4 select the conduction condition of the MRR. Let 1 represent the upward selection of switch S and 0 represent the downward selection. Therefore, when the MRR is operating normally, S1 is activated. 1. S3 selection 2. Set S1 to 1 and S3 to 0. Define the MRR state as 1 when ON and 0 when OFF. Light containing λ1 and λ2 is input through the Input terminal. λ1 and λ2 are represented by different voltage values. When the system is working normally, the normal operation unit is active, the fault-tolerant unit is open, and the optical switches S1, S3, S5, and S7 in the optical switch unit are closed, while S2, S4, S6, and S8 are open. The light containing λ1 and λ2 resonates with the micro-ring resonators MRR1, MRR2, MRR3, and MRR4, and then passes through the weighting devices R1, R2, R3, and R4. The light containing λ1 and λ2 carries the weight and resonates with the micro-ring resonators MRR11, MRR22, MRR33, and MRR44, and is output through the Output1 and Output2 terminals respectively. When the microring resonator is affected by temperature, the resonant wavelength drifts, causing changes in the output voltage. When the system output voltage is detected to be inconsistent with the normal operating voltage, the system will determine that a fault has occurred. At this time, fault-tolerant measures are activated. When the system detects a fault, the normal operating unit is disconnected, the fault-tolerant unit is activated, and the optical switches S2, S4, S6, and S8 in the optical switching unit are closed while S1, S3, S5, and S7 are open. The light containing λ1 and λ2 resonates with the microring resonators MRR1X, MRR2X, MRR3X, and MRR4X, and then passes through weight devices R1X, R2X, R3X, and R4X with the same weight values ​​as R1, R2, R3, and R4. The light containing λ1 and λ2 carries the weight and resonates with the microring resonators MRR11X, MRR22X, MRR33X, and MRR44X, and is output from Output1 and Output2 respectively. At this time, the output voltage value is equal to the output voltage value when the system is operating normally, achieving the fault-tolerant effect.

Claims

1. A fault-tolerant device for bridging photonic tensor nuclei, characterized in that: The aforementioned photonic tensor kernel bridging fault tolerance device simulates fault tolerance measures for photonic tensor kernels that perform optical operations on 2×2 matrices and 2×1 vectors during photonic tensor kernel operations, addressing the occurrence of bridging faults during these operations. The photonic tensor kernel consists of eight microring resonators, where a bridging fault is caused by the failure of a single microring resonator. The photonic tensor kernel bridging fault tolerance device includes two normal operation units, two fault tolerance units, and two optical switching units.

2. The normal operating unit comprises eight micro-ring resonators and four weighting elements. The eight micro-ring resonators are micro-ring resonator one, micro-ring resonator two, micro-ring resonator three, micro-ring resonator four, micro-ring resonator five, micro-ring resonator six, micro-ring resonator seven, and micro-ring resonator eight. The four weighting elements are weighting element one, weighting element two, weighting element three, and weighting element four.

3. The fault-tolerant unit includes eight fault-tolerant micro-ring resonators and four fault-tolerant weighting elements. The eight fault-tolerant micro-ring resonators are fault-tolerant micro-ring resonator one, fault-tolerant micro-ring resonator two, fault-tolerant micro-ring resonator three, fault-tolerant micro-ring resonator four, fault-tolerant micro-ring resonator five, fault-tolerant micro-ring resonator six, fault-tolerant micro-ring resonator seven, and fault-tolerant micro-ring resonator eight. The four weighting elements are fault-tolerant weighting element one, fault-tolerant weighting element two, fault-tolerant weighting element three, and fault-tolerant weighting element four.

4. The optical switch unit includes eight optical switches, namely optical switch one, optical switch two, optical switch three, optical switch four, optical switch five, optical switch six, optical switch seven, and optical switch eight.

5. The system output terminals include system output terminal one and system output terminal two.

6. The first input terminal of the optical switch is connected to the system input terminal; the first output terminal of the optical switch is connected to the first input terminal of the microring resonator; the second input terminal of the optical switch is connected to the system input terminal; the second output terminal of the optical switch is connected to the first output terminal of the fault-tolerant microring resonator; the third input terminal of the optical switch is connected to the fourth output terminal of the microring resonator; the third output terminal of the optical switch is connected to the first system output terminal; the fourth input terminal of the optical switch is connected to the fourth output terminal of the fault-tolerant microring resonator; and the fourth output terminal of the optical switch is connected to the first system output terminal. The optical switch five input terminal is connected to the system input terminal, the optical switch five output terminal is connected to the micro-ring resonator five input terminal, the optical switch six input terminal is connected to the system input terminal, the optical switch six output terminal is connected to the fault-tolerant micro-ring resonator five input terminal, the optical switch seven input terminal is connected to the micro-ring resonator eight output terminal, the optical switch seven output terminal is connected to the system output terminal two, the optical switch eight input terminal is connected to the fault-tolerant micro-ring resonator eight output terminal, and the optical switch eight output terminal is connected to the system output terminal two.

7. The output terminal of the microring resonator is connected to the input terminal of the weighting element; the direct-through terminal of the microring resonator is connected to the input terminal of the microring resonator; the output terminal of the microring resonator is connected to the input terminal of the weighting element; the direct-through terminal of the microring resonator is left floating; the input terminal of the microring resonator is connected to the output terminal of the weighting element; the direct-through terminal of the microring resonator is left floating; the output terminal of the microring resonator is connected to the output terminal of the microring resonator; the input terminal of the microring resonator is connected to the output terminal of the weighting element; and the direct-through terminal of the microring resonator is connected to the input terminal of the weighting element. The output terminal of the microring resonator is connected to the input terminal of the weighting element. The through terminal of the microring resonator is connected to the input terminal of the microring resonator. The output terminal of the microring resonator is connected to the input terminal of the weighting element. The through terminal of the microring resonator is left floating. The input terminal of the microring resonator is connected to the output terminal of the weighting element. The through terminal of the microring resonator is left floating. The output terminal of the microring resonator is connected to the output terminal of the microring resonator. The input terminal of the microring resonator is connected to the output terminal of the weighting element. The through terminal of the microring resonator is connected to the input terminal of the weighting element.

8. The first output terminal of the fault-tolerant microring resonator is connected to the first input terminal of the fault-tolerant weighting element; the direct-through terminal of the fault-tolerant microring resonator is connected to the second input terminal of the fault-tolerant microring resonator; the second output terminal of the fault-tolerant microring resonator is connected to the second input terminal of the fault-tolerant weighting element; the second direct-through terminal of the fault-tolerant microring resonator is left floating; the third input terminal of the fault-tolerant microring resonator is connected to the first output terminal of the fault-tolerant weighting element; the third direct-through terminal of the fault-tolerant microring resonator is left floating; the third output terminal of the fault-tolerant microring resonator is connected to the fourth output terminal of the fault-tolerant microring resonator; the fourth input terminal of the fault-tolerant microring resonator is connected to the second output terminal of the fault-tolerant weighting element; and the fourth direct-through terminal of the fault-tolerant microring resonator is connected to the first input terminal of the fault-tolerant weighting element. The fault-tolerant microring resonator's fifth output terminal is connected to the fault-tolerant weighting element's third input terminal; the fault-tolerant microring resonator's fifth through terminal is connected to the fault-tolerant microring resonator's sixth input terminal; the fault-tolerant microring resonator's sixth output terminal is connected to the fault-tolerant weighting element's fourth input terminal; the fault-tolerant microring resonator's sixth through terminal is left floating; the fault-tolerant microring resonator's seventh input terminal is connected to the fault-tolerant weighting element's third output terminal; the fault-tolerant microring resonator's seventh through terminal is left floating; the fault-tolerant microring resonator's seventh output terminal is connected to the fault-tolerant microring resonator's eighth output terminal; the fault-tolerant microring resonator's eighth input terminal is connected to the fault-tolerant weighting element's fourth output terminal; and the fault-tolerant microring resonator's eighth through terminal is connected to the fault-tolerant weighting element's third input terminal.

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