355 lines
19 KiB
C++
355 lines
19 KiB
C++
/*****************************************************************************
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* McPAT
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* SOFTWARE LICENSE AGREEMENT
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* Copyright 2012 Hewlett-Packard Development Company, L.P.
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* All Rights Reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.”
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*
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***************************************************************************/
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#include <algorithm>
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#include <cassert>
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#include <cmath>
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#include <iostream>
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#include <string>
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#include "XML_Parse.h"
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#include "basic_circuit.h"
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#include "const.h"
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#include "io.h"
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#include "noc.h"
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#include "parameter.h"
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NoC::NoC(ParseXML *XML_interface, int ithNoC_, InputParameter* interface_ip_, double M_traffic_pattern_, double link_len_)
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:XML(XML_interface),
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ithNoC(ithNoC_),
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interface_ip(*interface_ip_),
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router(0),
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link_bus(0),
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link_bus_exist(false),
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router_exist(false),
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M_traffic_pattern(M_traffic_pattern_)
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{
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/*
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* initialize, compute and optimize individual components.
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*/
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if (XML->sys.Embedded)
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{
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interface_ip.wt =Global_30;
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interface_ip.wire_is_mat_type = 0;
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interface_ip.wire_os_mat_type = 1;
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}
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else
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{
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interface_ip.wt =Global;
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interface_ip.wire_is_mat_type = 2;
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interface_ip.wire_os_mat_type = 2;
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}
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set_noc_param();
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local_result=init_interface(&interface_ip);
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scktRatio = g_tp.sckt_co_eff;
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if (nocdynp.type)
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{/*
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* if NOC compute router, router links must be computed separately
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* and called from external
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* since total chip area must be known first
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*/
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init_router();
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}
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else
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{
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init_link_bus(link_len_); //if bus compute bus
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}
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// //clock power
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// clockNetwork.init_wire_external(is_default, &interface_ip);
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// clockNetwork.clk_area =area*1.1;//10% of placement overhead. rule of thumb
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// clockNetwork.end_wiring_level =5;//toplevel metal
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// clockNetwork.start_wiring_level =5;//toplevel metal
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// clockNetwork.num_regs = corepipe.tot_stage_vector;
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// clockNetwork.optimize_wire();
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}
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void NoC::init_router()
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{
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router = new Router(nocdynp.flit_size,
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nocdynp.virtual_channel_per_port*nocdynp.input_buffer_entries_per_vc,
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nocdynp.virtual_channel_per_port, &(g_tp.peri_global),
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nocdynp.input_ports,nocdynp.output_ports, M_traffic_pattern);
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//router->print_router();
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area.set_area(area.get_area()+ router->area.get_area()*nocdynp.total_nodes);
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double long_channel_device_reduction = longer_channel_device_reduction(Uncore_device);
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router->power.readOp.longer_channel_leakage = router->power.readOp.leakage * long_channel_device_reduction;
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router->buffer.power.readOp.longer_channel_leakage = router->buffer.power.readOp.leakage * long_channel_device_reduction;
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router->crossbar.power.readOp.longer_channel_leakage = router->crossbar.power.readOp.leakage * long_channel_device_reduction;
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router->arbiter.power.readOp.longer_channel_leakage = router->arbiter.power.readOp.leakage * long_channel_device_reduction;
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router_exist = true;
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}
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void NoC ::init_link_bus(double link_len_)
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{
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// if (nocdynp.min_ports==1 )
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if (nocdynp.type)
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link_name = "Links";
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else
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link_name = "Bus";
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link_len=link_len_;
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assert(link_len>0);
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interface_ip.throughput = nocdynp.link_throughput/nocdynp.clockRate;
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interface_ip.latency = nocdynp.link_latency/nocdynp.clockRate;
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link_len /= (nocdynp.horizontal_nodes + nocdynp.vertical_nodes)/2;
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if (nocdynp.total_nodes >1) link_len /=2; //All links are shared by neighbors
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link_bus = new interconnect(name, Uncore_device, 1, 1, nocdynp.flit_size,
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link_len, &interface_ip, 3, true/*pipelinable*/, nocdynp.route_over_perc);
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link_bus_tot_per_Router.area.set_area(link_bus_tot_per_Router.area.get_area()+ link_bus->area.get_area()
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* nocdynp.global_linked_ports);
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area.set_area(area.get_area()+ link_bus_tot_per_Router.area.get_area()* nocdynp.total_nodes);
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link_bus_exist = true;
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}
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void NoC::computeEnergy(bool is_tdp)
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{
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//power_point_product_masks
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double pppm_t[4] = {1,1,1,1};
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double M=nocdynp.duty_cycle;
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if (is_tdp)
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{
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//init stats for TDP
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stats_t.readAc.access = M;
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tdp_stats = stats_t;
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if (router_exist)
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{
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set_pppm(pppm_t, 1*M, 1, 1, 1);//reset traffic pattern
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router->power = router->power*pppm_t;
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set_pppm(pppm_t, nocdynp.total_nodes, nocdynp.total_nodes, nocdynp.total_nodes, nocdynp.total_nodes);
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power = power + router->power*pppm_t;
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}
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if (link_bus_exist)
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{
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if (nocdynp.type)
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set_pppm(pppm_t, 1*M_traffic_pattern*M*(nocdynp.min_ports -1), nocdynp.global_linked_ports,
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nocdynp.global_linked_ports, nocdynp.global_linked_ports);
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//reset traffic pattern; local port do not have router links
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else
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set_pppm(pppm_t, 1*M_traffic_pattern*M*(nocdynp.min_ports), nocdynp.global_linked_ports,
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nocdynp.global_linked_ports, nocdynp.global_linked_ports);//reset traffic pattern
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link_bus_tot_per_Router.power = link_bus->power*pppm_t;
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set_pppm(pppm_t, nocdynp.total_nodes,
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nocdynp.total_nodes,
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nocdynp.total_nodes,
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nocdynp.total_nodes);
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power = power + link_bus_tot_per_Router.power*pppm_t;
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}
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}
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else
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{
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//init stats for runtime power (RTP)
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stats_t.readAc.access = XML->sys.NoC[ithNoC].total_accesses;
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rtp_stats = stats_t;
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set_pppm(pppm_t, 1, 0 , 0, 0);
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if (router_exist)
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{
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router->buffer.rt_power.readOp.dynamic = (router->buffer.power.readOp.dynamic + router->buffer.power.writeOp.dynamic)*rtp_stats.readAc.access ;
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router->crossbar.rt_power.readOp.dynamic = router->crossbar.power.readOp.dynamic*rtp_stats.readAc.access ;
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router->arbiter.rt_power.readOp.dynamic = router->arbiter.power.readOp.dynamic*rtp_stats.readAc.access ;
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router->rt_power = router->rt_power + (router->buffer.rt_power + router->crossbar.rt_power + router->arbiter.rt_power)*pppm_t +
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router->power*pppm_lkg;//TDP power must be calculated first!
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rt_power = rt_power + router->rt_power;
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}
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if (link_bus_exist)
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{
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set_pppm(pppm_t, rtp_stats.readAc.access, 1 , 1, rtp_stats.readAc.access);
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link_bus->rt_power = link_bus->power * pppm_t;
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rt_power = rt_power + link_bus->rt_power;
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}
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}
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}
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void NoC::displayEnergy(uint32_t indent,int plevel,bool is_tdp)
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{
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string indent_str(indent, ' ');
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string indent_str_next(indent+2, ' ');
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bool long_channel = XML->sys.longer_channel_device;
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double M =M_traffic_pattern*nocdynp.duty_cycle;
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/*only router as a whole has been applied the M_traffic_pattern(0.6 by default) factor in router.cc;
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* When power of crossbars, arbiters, etc need to be displayed, the M_traffic_pattern factor need to
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* be applied together with McPAT's extra traffic pattern.
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* */
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if (is_tdp)
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{
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cout << name << endl;
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cout << indent_str << "Area = " << area.get_area()*1e-6<< " mm^2" << endl;
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cout << indent_str<< "Peak Dynamic = " << power.readOp.dynamic*nocdynp.clockRate << " W" << endl;
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cout << indent_str << "Subthreshold Leakage = "
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<< (long_channel? power.readOp.longer_channel_leakage:power.readOp.leakage) <<" W" << endl;
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cout << indent_str << "Gate Leakage = " << power.readOp.gate_leakage << " W" << endl;
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cout << indent_str<< "Runtime Dynamic = " << rt_power.readOp.dynamic/nocdynp.executionTime << " W" << endl;
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cout<<endl;
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if (router_exist)
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{
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cout << indent_str << "Router: " << endl;
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cout << indent_str_next << "Area = " << router->area.get_area()*1e-6<< " mm^2" << endl;
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cout << indent_str_next<< "Peak Dynamic = " << router->power.readOp.dynamic*nocdynp.clockRate << " W" << endl;
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cout << indent_str_next << "Subthreshold Leakage = "
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<< (long_channel? router->power.readOp.longer_channel_leakage:router->power.readOp.leakage) <<" W" << endl;
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cout << indent_str_next << "Gate Leakage = " << router->power.readOp.gate_leakage << " W" << endl;
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cout << indent_str_next<< "Runtime Dynamic = " << router->rt_power.readOp.dynamic/nocdynp.executionTime << " W" << endl;
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cout<<endl;
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if (plevel >2){
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cout << indent_str<< indent_str << "Virtual Channel Buffer:" << endl;
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cout << indent_str<< indent_str_next << "Area = " << router->buffer.area.get_area()*1e-6*nocdynp.input_ports<< " mm^2" << endl;
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cout << indent_str<< indent_str_next << "Peak Dynamic = " <<(router->buffer.power.readOp.dynamic + router->buffer.power.writeOp.dynamic)
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*nocdynp.min_ports*M*nocdynp.clockRate << " W" << endl;
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cout << indent_str<< indent_str_next << "Subthreshold Leakage = "
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<< (long_channel? router->buffer.power.readOp.longer_channel_leakage*nocdynp.input_ports:router->buffer.power.readOp.leakage*nocdynp.input_ports) <<" W" << endl;
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cout << indent_str<< indent_str_next << "Gate Leakage = " << router->buffer.power.readOp.gate_leakage*nocdynp.input_ports << " W" << endl;
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cout << indent_str<< indent_str_next << "Runtime Dynamic = " << router->buffer.rt_power.readOp.dynamic/nocdynp.executionTime << " W" << endl;
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cout <<endl;
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cout << indent_str<< indent_str<< "Crossbar:" << endl;
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cout << indent_str<< indent_str_next << "Area = " << router->crossbar.area.get_area()*1e-6 << " mm^2" << endl;
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cout << indent_str<< indent_str_next << "Peak Dynamic = " << router->crossbar.power.readOp.dynamic*nocdynp.clockRate*nocdynp.min_ports*M << " W" << endl;
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cout << indent_str<< indent_str_next << "Subthreshold Leakage = "
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<< (long_channel? router->crossbar.power.readOp.longer_channel_leakage:router->crossbar.power.readOp.leakage) << " W" << endl;
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cout << indent_str<< indent_str_next << "Gate Leakage = " << router->crossbar.power.readOp.gate_leakage << " W" << endl;
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cout << indent_str<< indent_str_next << "Runtime Dynamic = " << router->crossbar.rt_power.readOp.dynamic/nocdynp.executionTime << " W" << endl;
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cout <<endl;
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cout << indent_str<< indent_str<< "Arbiter:" << endl;
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cout << indent_str<< indent_str_next << "Peak Dynamic = " << router->arbiter.power.readOp.dynamic*nocdynp.clockRate*nocdynp.min_ports*M << " W" << endl;
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cout << indent_str<< indent_str_next << "Subthreshold Leakage = "
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<< (long_channel? router->arbiter.power.readOp.longer_channel_leakage:router->arbiter.power.readOp.leakage) << " W" << endl;
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cout << indent_str<< indent_str_next << "Gate Leakage = " << router->arbiter.power.readOp.gate_leakage << " W" << endl;
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cout << indent_str<< indent_str_next << "Runtime Dynamic = " << router->arbiter.rt_power.readOp.dynamic/nocdynp.executionTime << " W" << endl;
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cout <<endl;
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}
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}
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if (link_bus_exist)
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{
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cout << indent_str << (nocdynp.type? "Per Router ":"") << link_name<<": " << endl;
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cout << indent_str_next << "Area = " << link_bus_tot_per_Router.area.get_area()*1e-6<< " mm^2" << endl;
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cout << indent_str_next<< "Peak Dynamic = " << link_bus_tot_per_Router.power.readOp.dynamic*
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nocdynp.clockRate << " W" << endl;
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cout << indent_str_next << "Subthreshold Leakage = "
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<< (long_channel? link_bus_tot_per_Router.power.readOp.longer_channel_leakage:link_bus_tot_per_Router.power.readOp.leakage)
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<<" W" << endl;
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cout << indent_str_next << "Gate Leakage = " << link_bus_tot_per_Router.power.readOp.gate_leakage
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<< " W" << endl;
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cout << indent_str_next<< "Runtime Dynamic = " << link_bus->rt_power.readOp.dynamic/nocdynp.executionTime << " W" << endl;
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cout<<endl;
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}
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}
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else
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{
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// cout << indent_str_next << "Instruction Fetch Unit Peak Dynamic = " << ifu->rt_power.readOp.dynamic*clockRate << " W" << endl;
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// cout << indent_str_next << "Instruction Fetch Unit Subthreshold Leakage = " << ifu->rt_power.readOp.leakage <<" W" << endl;
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// cout << indent_str_next << "Instruction Fetch Unit Gate Leakage = " << ifu->rt_power.readOp.gate_leakage << " W" << endl;
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// cout << indent_str_next << "Load Store Unit Peak Dynamic = " << lsu->rt_power.readOp.dynamic*clockRate << " W" << endl;
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// cout << indent_str_next << "Load Store Unit Subthreshold Leakage = " << lsu->rt_power.readOp.leakage << " W" << endl;
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// cout << indent_str_next << "Load Store Unit Gate Leakage = " << lsu->rt_power.readOp.gate_leakage << " W" << endl;
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// cout << indent_str_next << "Memory Management Unit Peak Dynamic = " << mmu->rt_power.readOp.dynamic*clockRate << " W" << endl;
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// cout << indent_str_next << "Memory Management Unit Subthreshold Leakage = " << mmu->rt_power.readOp.leakage << " W" << endl;
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// cout << indent_str_next << "Memory Management Unit Gate Leakage = " << mmu->rt_power.readOp.gate_leakage << " W" << endl;
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// cout << indent_str_next << "Execution Unit Peak Dynamic = " << exu->rt_power.readOp.dynamic*clockRate << " W" << endl;
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// cout << indent_str_next << "Execution Unit Subthreshold Leakage = " << exu->rt_power.readOp.leakage << " W" << endl;
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// cout << indent_str_next << "Execution Unit Gate Leakage = " << exu->rt_power.readOp.gate_leakage << " W" << endl;
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}
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}
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void NoC::set_noc_param()
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{
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nocdynp.type = XML->sys.NoC[ithNoC].type;
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nocdynp.clockRate =XML->sys.NoC[ithNoC].clockrate;
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nocdynp.clockRate *= 1e6;
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nocdynp.executionTime = XML->sys.total_cycles/(XML->sys.target_core_clockrate*1e6);
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nocdynp.flit_size = XML->sys.NoC[ithNoC].flit_bits;
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if (nocdynp.type)
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{
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nocdynp.input_ports = XML->sys.NoC[ithNoC].input_ports;
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nocdynp.output_ports = XML->sys.NoC[ithNoC].output_ports;//later minus 1
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nocdynp.min_ports = min(nocdynp.input_ports,nocdynp.output_ports);
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nocdynp.global_linked_ports = (nocdynp.input_ports-1) + (nocdynp.output_ports-1);
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/*
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* Except local i/o ports, all ports needs links( global_linked_ports);
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* However only min_ports can be fully active simultaneously
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* since the fewer number of ports (input or output ) is the bottleneck.
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*/
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}
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else
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{
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nocdynp.input_ports = 1;
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nocdynp.output_ports = 1;
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nocdynp.min_ports = min(nocdynp.input_ports,nocdynp.output_ports);
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nocdynp.global_linked_ports = 1;
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}
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nocdynp.virtual_channel_per_port = XML->sys.NoC[ithNoC].virtual_channel_per_port;
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nocdynp.input_buffer_entries_per_vc = XML->sys.NoC[ithNoC].input_buffer_entries_per_vc;
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nocdynp.horizontal_nodes = XML->sys.NoC[ithNoC].horizontal_nodes;
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nocdynp.vertical_nodes = XML->sys.NoC[ithNoC].vertical_nodes;
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nocdynp.total_nodes = nocdynp.horizontal_nodes*nocdynp.vertical_nodes;
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nocdynp.duty_cycle = XML->sys.NoC[ithNoC].duty_cycle;
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nocdynp.has_global_link = XML->sys.NoC[ithNoC].has_global_link;
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nocdynp.link_throughput = XML->sys.NoC[ithNoC].link_throughput;
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nocdynp.link_latency = XML->sys.NoC[ithNoC].link_latency;
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nocdynp.chip_coverage = XML->sys.NoC[ithNoC].chip_coverage;
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nocdynp.route_over_perc = XML->sys.NoC[ithNoC].route_over_perc;
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assert (nocdynp.chip_coverage <=1);
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assert (nocdynp.route_over_perc <=1);
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if (nocdynp.type)
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name = "NOC";
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else
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name = "BUSES";
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}
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NoC ::~NoC(){
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if(router) {delete router; router = 0;}
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if(link_bus) {delete link_bus; link_bus = 0;}
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}
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