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