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CMOS microprocessors are limited in their capacity for clock speed improvement because of increasing computing power, i.e., they face a power-wall problem. Single-flux-quantum (SFQ) circuits offer a solution with their ultra-fast-speed and ultra-low-power natures. This paper introduces our contributions towards ultra-high-speed cryogenic SFQ computing. The first step is to design SFQ microprocessors. From qualitatively and quantitatively evaluating past-designed SFQ microprocessors, we have found that revisiting the architecture of SFQ microprocessors and on-chip caches is the first critical challenge. On the basis of cross-layer discussions and analysis, we came to the conclusion that a bit-parallel gate-level pipeline architecture is the best solution for SFQ designs. This paper summarizes our current research results targeting SFQ microprocessors and on-chip cache architectures.
Koki ISHIDA
Kyushu University
Masamitsu TANAKA
Nagoya University
Takatsugu ONO
Kyushu University
Koji INOUE
Kyushu University
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Koki ISHIDA, Masamitsu TANAKA, Takatsugu ONO, Koji INOUE, "Towards Ultra-High-Speed Cryogenic Single-Flux-Quantum Computing" in IEICE TRANSACTIONS on Electronics,
vol. E101-C, no. 5, pp. 359-369, May 2018, doi: 10.1587/transele.E101.C.359.
Abstract: CMOS microprocessors are limited in their capacity for clock speed improvement because of increasing computing power, i.e., they face a power-wall problem. Single-flux-quantum (SFQ) circuits offer a solution with their ultra-fast-speed and ultra-low-power natures. This paper introduces our contributions towards ultra-high-speed cryogenic SFQ computing. The first step is to design SFQ microprocessors. From qualitatively and quantitatively evaluating past-designed SFQ microprocessors, we have found that revisiting the architecture of SFQ microprocessors and on-chip caches is the first critical challenge. On the basis of cross-layer discussions and analysis, we came to the conclusion that a bit-parallel gate-level pipeline architecture is the best solution for SFQ designs. This paper summarizes our current research results targeting SFQ microprocessors and on-chip cache architectures.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E101.C.359/_p
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@ARTICLE{e101-c_5_359,
author={Koki ISHIDA, Masamitsu TANAKA, Takatsugu ONO, Koji INOUE, },
journal={IEICE TRANSACTIONS on Electronics},
title={Towards Ultra-High-Speed Cryogenic Single-Flux-Quantum Computing},
year={2018},
volume={E101-C},
number={5},
pages={359-369},
abstract={CMOS microprocessors are limited in their capacity for clock speed improvement because of increasing computing power, i.e., they face a power-wall problem. Single-flux-quantum (SFQ) circuits offer a solution with their ultra-fast-speed and ultra-low-power natures. This paper introduces our contributions towards ultra-high-speed cryogenic SFQ computing. The first step is to design SFQ microprocessors. From qualitatively and quantitatively evaluating past-designed SFQ microprocessors, we have found that revisiting the architecture of SFQ microprocessors and on-chip caches is the first critical challenge. On the basis of cross-layer discussions and analysis, we came to the conclusion that a bit-parallel gate-level pipeline architecture is the best solution for SFQ designs. This paper summarizes our current research results targeting SFQ microprocessors and on-chip cache architectures.},
keywords={},
doi={10.1587/transele.E101.C.359},
ISSN={1745-1353},
month={May},}
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TY - JOUR
TI - Towards Ultra-High-Speed Cryogenic Single-Flux-Quantum Computing
T2 - IEICE TRANSACTIONS on Electronics
SP - 359
EP - 369
AU - Koki ISHIDA
AU - Masamitsu TANAKA
AU - Takatsugu ONO
AU - Koji INOUE
PY - 2018
DO - 10.1587/transele.E101.C.359
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E101-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 2018
AB - CMOS microprocessors are limited in their capacity for clock speed improvement because of increasing computing power, i.e., they face a power-wall problem. Single-flux-quantum (SFQ) circuits offer a solution with their ultra-fast-speed and ultra-low-power natures. This paper introduces our contributions towards ultra-high-speed cryogenic SFQ computing. The first step is to design SFQ microprocessors. From qualitatively and quantitatively evaluating past-designed SFQ microprocessors, we have found that revisiting the architecture of SFQ microprocessors and on-chip caches is the first critical challenge. On the basis of cross-layer discussions and analysis, we came to the conclusion that a bit-parallel gate-level pipeline architecture is the best solution for SFQ designs. This paper summarizes our current research results targeting SFQ microprocessors and on-chip cache architectures.
ER -