IEEE Solid-States Circuits Magazine - Fall 2021 - 74

and efficiency, however, CIRCNN
has two drawbacks: 1) the computation
needs to be carried out in the
realm of complex numbers and 2)
the method cannot be used in tandem
with extreme quantization,
as the precision of the quantized
weight matrices do not propagate in
their transformation into the Fourier
domain.
We compare the performance,
power, and efficiency of a CSC-AP
with a Pascal-family GPU from the
NVIDIA Jetson TX2 system on chip,
which is a commercial off-the-shelf
(COTS) device optimized for deep
learning applications, and with
three related application-specific ICs
(ASICs) that accelerate processing
neural networks in the same fabrication
technology, i.e., 65 nm. We note
that comparing the performance and
efficiency of hardware accelerators
with different data-width formats
128
16
32
64
4
8
1.5625
6.25
25
Clock Frequency (MHz)
(a)
100
Voltage: 0.6 V
Voltage: 1 V
10
20
30
40
50
1.5625
6.25
25
Clock Frequency (MHz)
(b)
FIGURE 6: The (a) power as well as (b) performance and efficiency measurements of the CSC-AP, given a clock frequency ranging from 1 to
100 MHz.
100
Actual Efficiency (at 0.6 V)
Actual Performance
0.05
0.2
0.8
3.2
12.8
51.2
1E+4
1E+4
1E+3
1E+3
1E+2
1E+2
1E+1
1E+1
1E+0
1E+0
14 16
Compression (γ)
(a)
CSC-AP
cuBLAS
cuSPARSE
FIGURE 7: A comparison of the (a) actual and (b) equivalent efficiencies of the cuBLAS and cuSPARSE libraries on the NVIDIA TX2 GPU with
those of the CSC-AP for a CSC matrix-vector multiplication with N = 1,024, given various compression rates.
74
FALL 2021
IEEE SOLID-STATE CIRCUITS MAGAZINE
64
14 16
Compression (γ)
(b)
64
Power (mW)
Actual Efficiency (GOPS/W)
Efficiency (GOPS/W)
Equivalent Efficiency (GOPS/W)
Performance (GOPS)

IEEE Solid-States Circuits Magazine - Fall 2021

Table of Contents for the Digital Edition of IEEE Solid-States Circuits Magazine - Fall 2021

Contents
IEEE Solid-States Circuits Magazine - Fall 2021 - Cover1
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