High Performance Accelerator. Simulation in PSpice Systems Option. Leading the Machine Intelligence Revolution. analog computing company

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1 Leading the Machine Intelligence Revolution High Performance Accelerator analog computing company Simulation in PSpice Systems Option Nihar Athreyas 2017 Spero Devices, Inc. All Rights Reserved. 1

2 Market Needs Platforms Emerging Applications Deep Learning Machine Vision Scientific Simulation Accelerator Card Enables real time processing Medical Imaging Equipment Industrial Robots Drones Virtual Reality High Power Consumption Automobiles Data Center Expensive Heavy Weight Large Size 2017 Spero Devices, Inc. All Rights Reserved. 2

3 Solution and Product a) Computation performed both in analog and digital domains Accelerator Card High Speed Low Power Programmable b) Use of CMOS and nanotechnology Digital Bus L Inputs Firmware Digital to Analog Converter Analog Engine Software API Analog to Digital Converter Digital Engine L Outputs Digital Bus Physical computation c) Key Innovations Architecture Materials Applications High Performance Accelerator Platform 2017 Spero Devices, Inc. All Rights Reserved. 3

4 Memristor Nanotechnology Nano devices 1x17 Memristor = Memory + Resistor Resistor with memory Passive device Applications Digital memory o Replacement for CMOS based non volatile memory Neuromorphic computing Analog computing Metal 1 Oxide V TE BE Oxide J. Joshua Yang et al., Nature Nanotechnology 3, 429 (2008) Orders of magnitude Improvement in computational efficiency! Vector xmatrixmultiplications (VMM) Computation intensive tasks One step in dot product core 2017 Spero Devices, Inc. All Rights Reserved. 4

5 SPICE Modeling Variation of Percentage Error with Wire Resistance Ohm Ohm 5 Ohm Ohm Column 1 Column 2 Column 3 Column 4 Sneak Path Current Analysis in an 8x8 array LRS of memristor is set at 330 Ω Ratio of memristor LRS to wire resistance is 1000, 330, 66 and 33 respectively PSpice Schematic of a 3x3 array 2017 Spero Devices, Inc. All Rights Reserved. 5

6 MATLAB Modeling Mathematical model of the crossbar array.. 0 0, 1 where, 2017 Spero Devices, Inc. All Rights Reserved. 6

7 MATLAB Modeling 2D Navier Stokes equation Methodology Simulation of Fluid Flow 2 D FFT using MATLAB FFT Function 2 D DFT using Analog Processor A B Step Error (%) A Navier Stokes Equation Perform VMM using MATLAB Function Display Solution B Navier Stokes Equation Perform VMM using Analog Processor Model 2017 Spero Devices, Inc. All Rights Reserved. 7

8 Why PSpice Systems Option? MATLAB simulation is Adding circuit level too ideal, even with simulation adds credibility non idealities! 2017 Spero Devices, Inc. All Rights Reserved. 8

9 PSpice Systems Option Simulation MATLAB Simulation Flow Original Image MATLAB MATLAB Image cropped Conversion to grey scale Edge detection PSpice Systems Option Simulation Flow Original Image MATLAB Edge detection 2017 Spero Devices, Inc. All Rights Reserved. 9

10 PSpice Systems Option Simulation Application Demonstration Filters Processed Simultaneously in the Same Core Write Signal Read Signal 1, 1 1, N N, 1 N, N Output PSNR: db SSIM: 1 PSNR: db SSIM: 1 PSNR: db SSIM: Spero Devices, Inc. All Rights Reserved. 10

11 PSpice Systems Option Simulation Application Demonstration Filters Processed Simultaneously in the Same Core PSNR: db SSIM: PSNR: db SSIM: PSNR: db SSIM: PSNR: db SSIM: Spero Devices, Inc. All Rights Reserved. 11

12 Summary MATLAB alone is too ideal for simulation of the accelerator PSpice alone is not suited for complex application demonstrations PSpice Systems Option is the ideal tool that combines the best features of MATLAB/Simulink and PSpice to perform co simulations 2017 Spero Devices, Inc. All Rights Reserved. 12

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