src/mem/ruby/network/orion/NetworkPower.cc - arm/gem5 - Git at Google

 /*
  * Copyright (c) 2010 Massachusetts Institute of Technology
  * 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.
  *
  * Authors: Chia-Hsin Owen Chen
  *          Tushar Krishna
  */

 #include "mem/ruby/common/Global.hh"
 #include "mem/ruby/network/orion/NetworkPower.hh"
 #include "mem/ruby/network/orion/OrionConfig.hh"
 #include "mem/ruby/network/orion/OrionLink.hh"
 #include "mem/ruby/network/orion/OrionRouter.hh"

 void
 Router_d::calculate_power()
 {
     //Network Activities from garnet
     calculate_performance_numbers();
     double sim_cycles = curCycle() - g_ruby_start;

     // Number of virtual networks/message classes declared in Ruby
     // maybe greater than active virtual networks.
     // Estimate active virtual networks for correct power estimates
     int num_active_vclass = 0;
     std::vector<bool > active_vclass_ary;
     active_vclass_ary.resize(m_virtual_networks);

     std::vector<double > vc_local_arbit_count_active;
     std::vector<double > vc_global_arbit_count_active;
     std::vector<double > buf_read_count_active;
     std::vector<double > buf_write_count_active;

     for (int i =0; i < m_virtual_networks; i++) {

         active_vclass_ary[i] = (get_net_ptr())->validVirtualNetwork(i);
         if (active_vclass_ary[i]) {
             num_active_vclass++;
             vc_local_arbit_count_active.push_back(vc_local_arbit_count[i]);
             vc_global_arbit_count_active.push_back(vc_global_arbit_count[i]);
             buf_read_count_active.push_back(buf_read_count[i]);
             buf_write_count_active.push_back(buf_write_count[i]);
         }
         else {
             // Inactive vclass
             assert(vc_global_arbit_count[i] == 0);
             assert(vc_local_arbit_count[i] == 0);
         }
     }

     // Orion Initialization
     OrionConfig* orion_cfg_ptr;
     OrionRouter* orion_rtr_ptr;
     static double freq_Hz;

     const string cfg_fn = "src/mem/ruby/network/orion/router.cfg";
     orion_cfg_ptr = new OrionConfig(cfg_fn);
     freq_Hz = orion_cfg_ptr->get<double>("FREQUENCY");

     uint32_t num_in_port = m_input_unit.size();
     uint32_t num_out_port = m_output_unit.size();
     uint32_t num_vclass = num_active_vclass;
     std::vector<uint32_t > vclass_type_ary;

     for (int i = 0; i < m_virtual_networks; i++) {
         if (active_vclass_ary[i]) {
             int temp_vc = i*m_vc_per_vnet;
             vclass_type_ary.push_back((uint32_t)
                 m_network_ptr->get_vnet_type(temp_vc));
         }
     }
     assert(vclass_type_ary.size() == num_active_vclass);

     uint32_t num_vc_per_vclass = m_vc_per_vnet;
     uint32_t in_buf_per_data_vc = m_network_ptr->getBuffersPerDataVC();
     uint32_t in_buf_per_ctrl_vc = m_network_ptr->getBuffersPerCtrlVC();
     //flit width in bits
     uint32_t flit_width_bits = m_network_ptr->getNiFlitSize() * 8;

     orion_rtr_ptr = new OrionRouter(
         num_in_port,
         num_out_port,
         num_vclass,
         vclass_type_ary,
         num_vc_per_vclass,
         in_buf_per_data_vc,
         in_buf_per_ctrl_vc,
         flit_width_bits,
         orion_cfg_ptr
     );


     //Power Calculation
     double Pbuf_wr_dyn = 0.0;
     double Pbuf_rd_dyn = 0.0;
     double Pvc_arb_local_dyn = 0.0;
     double Pvc_arb_global_dyn = 0.0;
     double Psw_arb_local_dyn = 0.0;
     double Psw_arb_global_dyn = 0.0;
     double Pxbar_dyn = 0.0;

     double Pbuf_sta = 0.0;
     double Pvc_arb_sta = 0.0;
     double Psw_arb_sta = 0.0;
     double Pxbar_sta = 0.0;

     //Dynamic Power

     // Note: For each active arbiter in vc_arb or sw_arb of size T:1,
     // assuming half the requests (T/2) are high on average.
     // TODO: estimate expected value of requests from simulation.

     for (int i = 0; i < num_vclass; i++) {
         // Buffer Write
         Pbuf_wr_dyn +=
             orion_rtr_ptr->calc_dynamic_energy_buf(i, WRITE_MODE, false)*
                 (buf_write_count_active[i]/sim_cycles)*freq_Hz;

         // Buffer Read
         Pbuf_rd_dyn +=
             orion_rtr_ptr->calc_dynamic_energy_buf(i, READ_MODE, false)*
                 (buf_read_count_active[i]/sim_cycles)*freq_Hz;

         // VC arbitration local
         // Each input VC arbitrates for one output VC (in its vclass)
         // at its output port.
         // Arbiter size: num_vc_per_vclass:1
         Pvc_arb_local_dyn +=
             orion_rtr_ptr->calc_dynamic_energy_local_vc_arb(i,
                 num_vc_per_vclass/2, false)*
                     (vc_local_arbit_count_active[i]/sim_cycles)*
                     freq_Hz;

         // VC arbitration global
         // Each output VC chooses one input VC out of all possible requesting
         // VCs (within vclass) at all input ports
         // Arbiter size: num_in_port*num_vc_per_vclass:1
         // Round-robin at each input VC for outvcs in the local stage will
         // try to keep outvc conflicts to the minimum.
         // Assuming conflicts due to request for same outvc from
         // num_in_port/2 requests.
         // TODO: use garnet to estimate this
         Pvc_arb_global_dyn +=
             orion_rtr_ptr->calc_dynamic_energy_global_vc_arb(i,
                 num_in_port/2, false)*
                     (vc_global_arbit_count_active[i]/sim_cycles)*
                     freq_Hz;
     }

     // Switch Allocation Local
     // Each input port chooses one input VC as requestor
     // Arbiter size: num_vclass*num_vc_per_vclass:1
     Psw_arb_local_dyn =
         orion_rtr_ptr->calc_dynamic_energy_local_sw_arb(
             num_vclass*num_vc_per_vclass/2, false)*
             (sw_local_arbit_count/sim_cycles)*
             freq_Hz;

     // Switch Allocation Global
     // Each output port chooses one input port as winner
     // Arbiter size: num_in_port:1
     Psw_arb_global_dyn =
         orion_rtr_ptr->calc_dynamic_energy_global_sw_arb(
             num_in_port/2, false)*
                 (sw_global_arbit_count/sim_cycles)*
                 freq_Hz;

     // Crossbar
     Pxbar_dyn =
         orion_rtr_ptr->calc_dynamic_energy_xbar(false)*
             (crossbar_count/sim_cycles)*freq_Hz;

     // Total
     m_power_dyn = Pbuf_wr_dyn + Pbuf_rd_dyn +
                   Pvc_arb_local_dyn + Pvc_arb_global_dyn +
                   Psw_arb_local_dyn + Psw_arb_global_dyn +
                   Pxbar_dyn;

     // Clock Power
     m_clk_power = orion_rtr_ptr->calc_dynamic_energy_clock()*freq_Hz;

     // Static Power
     Pbuf_sta = orion_rtr_ptr->get_static_power_buf();
     Pvc_arb_sta = orion_rtr_ptr->get_static_power_va();
     Psw_arb_sta = orion_rtr_ptr->get_static_power_sa();
     Pxbar_sta = orion_rtr_ptr->get_static_power_xbar();

     m_power_sta =  Pbuf_sta + Pvc_arb_sta + Psw_arb_sta + Pxbar_sta;
 }

 void
 NetworkLink_d::calculate_power(double sim_cycles)
 {
     OrionConfig* orion_cfg_ptr;
     OrionLink* orion_link_ptr;
     static double freq_Hz;
     double link_length;

     // Initialization
     const string cfg_fn = "src/mem/ruby/network/orion/router.cfg";
     orion_cfg_ptr = new OrionConfig(cfg_fn);
     freq_Hz = orion_cfg_ptr->get<double>("FREQUENCY");

     link_length = orion_cfg_ptr->get<double>("LINK_LENGTH");

     int channel_width_bits = channel_width*8;

     orion_link_ptr = new OrionLink(
         link_length,
         channel_width_bits,
         orion_cfg_ptr);

     // Dynamic Power
     // Assume half the bits flipped on every link activity
     double link_dynamic_energy =
         orion_link_ptr->calc_dynamic_energy(channel_width_bits/2);
     m_power_dyn = link_dynamic_energy * (m_link_utilized  / sim_cycles) *
                   freq_Hz;


     // Static Power
     // Calculates number of repeaters needed in link, and their static power
     // For short links, like 1mm, no repeaters are needed so static power is 0
     m_power_sta = orion_link_ptr->get_static_power();

     delete orion_link_ptr;
     delete orion_cfg_ptr;
 }
	/*
	* Copyright (c) 2010 Massachusetts Institute of Technology
	* 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.
	*
	* Authors: Chia-Hsin Owen Chen
	* Tushar Krishna
	*/

	#include "mem/ruby/common/Global.hh"
	#include "mem/ruby/network/orion/NetworkPower.hh"
	#include "mem/ruby/network/orion/OrionConfig.hh"
	#include "mem/ruby/network/orion/OrionLink.hh"
	#include "mem/ruby/network/orion/OrionRouter.hh"

	void
	Router_d::calculate_power()
	{
	//Network Activities from garnet
	calculate_performance_numbers();
	double sim_cycles = curCycle() - g_ruby_start;

	// Number of virtual networks/message classes declared in Ruby
	// maybe greater than active virtual networks.
	// Estimate active virtual networks for correct power estimates
	int num_active_vclass = 0;
	std::vector<bool > active_vclass_ary;
	active_vclass_ary.resize(m_virtual_networks);

	std::vector<double > vc_local_arbit_count_active;
	std::vector<double > vc_global_arbit_count_active;
	std::vector<double > buf_read_count_active;
	std::vector<double > buf_write_count_active;

	for (int i =0; i < m_virtual_networks; i++) {

	active_vclass_ary[i] = (get_net_ptr())->validVirtualNetwork(i);
	if (active_vclass_ary[i]) {
	num_active_vclass++;
	vc_local_arbit_count_active.push_back(vc_local_arbit_count[i]);
	vc_global_arbit_count_active.push_back(vc_global_arbit_count[i]);
	buf_read_count_active.push_back(buf_read_count[i]);
	buf_write_count_active.push_back(buf_write_count[i]);
	}
	else {
	// Inactive vclass
	assert(vc_global_arbit_count[i] == 0);
	assert(vc_local_arbit_count[i] == 0);
	}
	}

	// Orion Initialization
	OrionConfig* orion_cfg_ptr;
	OrionRouter* orion_rtr_ptr;
	static double freq_Hz;

	const string cfg_fn = "src/mem/ruby/network/orion/router.cfg";
	orion_cfg_ptr = new OrionConfig(cfg_fn);
	freq_Hz = orion_cfg_ptr->get<double>("FREQUENCY");

	uint32_t num_in_port = m_input_unit.size();
	uint32_t num_out_port = m_output_unit.size();
	uint32_t num_vclass = num_active_vclass;
	std::vector<uint32_t > vclass_type_ary;

	for (int i = 0; i < m_virtual_networks; i++) {
	if (active_vclass_ary[i]) {
	int temp_vc = i*m_vc_per_vnet;
	vclass_type_ary.push_back((uint32_t)
	m_network_ptr->get_vnet_type(temp_vc));
	}
	}
	assert(vclass_type_ary.size() == num_active_vclass);

	uint32_t num_vc_per_vclass = m_vc_per_vnet;
	uint32_t in_buf_per_data_vc = m_network_ptr->getBuffersPerDataVC();
	uint32_t in_buf_per_ctrl_vc = m_network_ptr->getBuffersPerCtrlVC();
	//flit width in bits
	uint32_t flit_width_bits = m_network_ptr->getNiFlitSize() * 8;

	orion_rtr_ptr = new OrionRouter(
	num_in_port,
	num_out_port,
	num_vclass,
	vclass_type_ary,
	num_vc_per_vclass,
	in_buf_per_data_vc,
	in_buf_per_ctrl_vc,
	flit_width_bits,
	orion_cfg_ptr
	);


	//Power Calculation
	double Pbuf_wr_dyn = 0.0;
	double Pbuf_rd_dyn = 0.0;
	double Pvc_arb_local_dyn = 0.0;
	double Pvc_arb_global_dyn = 0.0;
	double Psw_arb_local_dyn = 0.0;
	double Psw_arb_global_dyn = 0.0;
	double Pxbar_dyn = 0.0;

	double Pbuf_sta = 0.0;
	double Pvc_arb_sta = 0.0;
	double Psw_arb_sta = 0.0;
	double Pxbar_sta = 0.0;

	//Dynamic Power

	// Note: For each active arbiter in vc_arb or sw_arb of size T:1,
	// assuming half the requests (T/2) are high on average.
	// TODO: estimate expected value of requests from simulation.

	for (int i = 0; i < num_vclass; i++) {
	// Buffer Write
	Pbuf_wr_dyn +=
	orion_rtr_ptr->calc_dynamic_energy_buf(i, WRITE_MODE, false)*
	(buf_write_count_active[i]/sim_cycles)*freq_Hz;

	// Buffer Read
	Pbuf_rd_dyn +=
	orion_rtr_ptr->calc_dynamic_energy_buf(i, READ_MODE, false)*
	(buf_read_count_active[i]/sim_cycles)*freq_Hz;

	// VC arbitration local
	// Each input VC arbitrates for one output VC (in its vclass)
	// at its output port.
	// Arbiter size: num_vc_per_vclass:1
	Pvc_arb_local_dyn +=
	orion_rtr_ptr->calc_dynamic_energy_local_vc_arb(i,
	num_vc_per_vclass/2, false)*
	(vc_local_arbit_count_active[i]/sim_cycles)*
	freq_Hz;

	// VC arbitration global
	// Each output VC chooses one input VC out of all possible requesting
	// VCs (within vclass) at all input ports
	// Arbiter size: num_in_port*num_vc_per_vclass:1
	// Round-robin at each input VC for outvcs in the local stage will
	// try to keep outvc conflicts to the minimum.
	// Assuming conflicts due to request for same outvc from
	// num_in_port/2 requests.
	// TODO: use garnet to estimate this
	Pvc_arb_global_dyn +=
	orion_rtr_ptr->calc_dynamic_energy_global_vc_arb(i,
	num_in_port/2, false)*
	(vc_global_arbit_count_active[i]/sim_cycles)*
	freq_Hz;
	}

	// Switch Allocation Local
	// Each input port chooses one input VC as requestor
	// Arbiter size: num_vclass*num_vc_per_vclass:1
	Psw_arb_local_dyn =
	orion_rtr_ptr->calc_dynamic_energy_local_sw_arb(
	num_vclassnum_vc_per_vclass/2, false)
	(sw_local_arbit_count/sim_cycles)*
	freq_Hz;

	// Switch Allocation Global
	// Each output port chooses one input port as winner
	// Arbiter size: num_in_port:1
	Psw_arb_global_dyn =
	orion_rtr_ptr->calc_dynamic_energy_global_sw_arb(
	num_in_port/2, false)*
	(sw_global_arbit_count/sim_cycles)*
	freq_Hz;

	// Crossbar
	Pxbar_dyn =
	orion_rtr_ptr->calc_dynamic_energy_xbar(false)*
	(crossbar_count/sim_cycles)*freq_Hz;

	// Total
	m_power_dyn = Pbuf_wr_dyn + Pbuf_rd_dyn +
	Pvc_arb_local_dyn + Pvc_arb_global_dyn +
	Psw_arb_local_dyn + Psw_arb_global_dyn +
	Pxbar_dyn;

	// Clock Power
	m_clk_power = orion_rtr_ptr->calc_dynamic_energy_clock()*freq_Hz;

	// Static Power
	Pbuf_sta = orion_rtr_ptr->get_static_power_buf();
	Pvc_arb_sta = orion_rtr_ptr->get_static_power_va();
	Psw_arb_sta = orion_rtr_ptr->get_static_power_sa();
	Pxbar_sta = orion_rtr_ptr->get_static_power_xbar();

	m_power_sta = Pbuf_sta + Pvc_arb_sta + Psw_arb_sta + Pxbar_sta;
	}

	void
	NetworkLink_d::calculate_power(double sim_cycles)
	{
	OrionConfig* orion_cfg_ptr;
	OrionLink* orion_link_ptr;
	static double freq_Hz;
	double link_length;

	// Initialization
	const string cfg_fn = "src/mem/ruby/network/orion/router.cfg";
	orion_cfg_ptr = new OrionConfig(cfg_fn);
	freq_Hz = orion_cfg_ptr->get<double>("FREQUENCY");

	link_length = orion_cfg_ptr->get<double>("LINK_LENGTH");

	int channel_width_bits = channel_width*8;

	orion_link_ptr = new OrionLink(
	link_length,
	channel_width_bits,
	orion_cfg_ptr);

	// Dynamic Power
	// Assume half the bits flipped on every link activity
	double link_dynamic_energy =
	orion_link_ptr->calc_dynamic_energy(channel_width_bits/2);
	m_power_dyn = link_dynamic_energy * (m_link_utilized / sim_cycles) *
	freq_Hz;


	// Static Power
	// Calculates number of repeaters needed in link, and their static power
	// For short links, like 1mm, no repeaters are needed so static power is 0
	m_power_sta = orion_link_ptr->get_static_power();

	delete orion_link_ptr;
	delete orion_cfg_ptr;
	}