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					ARCHI
ARCHI
 Lab
 Lab
EE&CSIE



             A Novel Dimensionally-Decomposed
                     Router for On-Chip
             Communication in 3D Architectures

             Author: J. Kim, C. Nicopoulos (Dept. of CSE, PSU)
             Speaker: Po-Shan Huang
             ISCA’07


National
Taiwan
University
ARCHI
ARCHI
 Lab                        Outline
 Lab
EE&CSIE


                Introduction
                Current 3D NoC Architecture
                Proposed DimDe Router
                Experimental Results
                Conclusion




National
Taiwan
University
ARCHI
ARCHI
 Lab                        Outline
 Lab
EE&CSIE


                Introduction
                Current 3D NoC Architecture
                Proposed DimDe Router
                Experimental Results
                Conclusion




National
Taiwan
University
ARCHI
ARCHI
 Lab                          Introduction
 Lab
EE&CSIE


                a new 3D NoC router architecture
                    Partially-connected Dimensionally-Decomposed
                     (DimDe) Router
                Characteristics
                    True 3D crossbar structure
                    Varying the number of vertical connections
                    Segmented vertical links in the partially-connected
                     crossbar
                    Hierarchical arbitration scheme for inter-strata
                     transfers
                    Similar to the Row-Column (RoCo) Decoupled Router

National
Taiwan
University
ARCHI
ARCHI
 Lab         Face-to-Back bonding
 Lab
EE&CSIE




National
Taiwan
University
ARCHI
ARCHI
 Lab                        Outline
 Lab
EE&CSIE


                Introduction
                Current 3D NoC Architecture
                Proposed DimDe Router
                Experimental Results
                Conclusion




National
Taiwan
University
ARCHI
ARCHI        Area and Power Comparisons of
 Lab
 Lab             the Crossbar Switches
EE&CSIE




National
Taiwan
University
ARCHI
ARCHI            3D Symmetric NoC Architecture
 Lab
 Lab
EE&CSIE


                7x7 crossbar




National
Taiwan
University
ARCHI
ARCHI        3D NoC-Bus Hybrid Architecture
 Lab
 Lab
EE&CSIE


                6x6 crossbar




National
Taiwan
University
ARCHI
ARCHI
 Lab         A True 3D NoC Router
 Lab
EE&CSIE




National
Taiwan
University
ARCHI
ARCHI A True 3D NoC Router (cont.)
 Lab
 Lab
EE&CSIE




National
Taiwan
University
ARCHI
ARCHI
 Lab                        Outline
 Lab
EE&CSIE


                Introduction
                Current 3D NoC Architecture
                Proposed DimDe Router
                Experimental Results
                Conclusion




National
Taiwan
University
ARCHI
ARCHI
 Lab         3D DimDe NoC Architecture
 Lab
EE&CSIE




National
Taiwan
University
ARCHI
ARCHI
 Lab         3D DimDe NoC Architecture
 Lab
EE&CSIE




National
Taiwan
University
ARCHI
ARCHI
 Lab         3D DimDe NoC Architecture
 Lab
EE&CSIE




National
Taiwan
University
ARCHI
ARCHI
 Lab                        Outline
 Lab
EE&CSIE


                Introduction
                Current 3D NoC Architecture
                Proposed DimDe Router
                Experimental Results
                Conclusion




National
Taiwan
University
ARCHI
ARCHI
 Lab                   Simulation Platform
 Lab
EE&CSIE


                Server workloads
                    TPC-C
                    SAP
                Memory traces
                    SPLASH
                Simulator
                    Simics
                The baseline configuration
                    Solaris 9 Operating system
                    eight UltraSPARC III cores
National
Taiwan
University
ARCHI
ARCHI
 Lab             Simulation Platform (cont.)
 Lab
EE&CSIE


                Energy Model
                    Register-Transfer Level (RTL) Verilog
                    Synopsys Design Compiler
                         TSMC 90 nm standard cell library




National
Taiwan
University
ARCHI
ARCHI            Impact of the Number of Vertical
 Lab
 Lab                Bundles on Performance
EE&CSIE


                Two vertical links instead of more




National
Taiwan
University
ARCHI
ARCHI
 Lab                  Simulation Result
 Lab
EE&CSIE


                Latency and throughput improvements of
                 over the other 3D architectures

                 Latency             Throughput




National
Taiwan
University
ARCHI
ARCHI
 Lab                         Conclusion
 Lab
EE&CSIE


                Energy reduction within Slight performance
                 overhead
                    Small crossbar and simple design reduce
                     about 26% in terms of EDP
                    Within 5% overhead




National
Taiwan
University

				
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posted:8/12/2012
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