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Diffstat (limited to 'src/mem/ruby/network/orion/Crossbar/MultreeCrossbar.cc')
| -rw-r--r-- | src/mem/ruby/network/orion/Crossbar/MultreeCrossbar.cc | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/mem/ruby/network/orion/Crossbar/MultreeCrossbar.cc b/src/mem/ruby/network/orion/Crossbar/MultreeCrossbar.cc new file mode 100644 index 000000000..44fa43cac --- /dev/null +++ b/src/mem/ruby/network/orion/Crossbar/MultreeCrossbar.cc @@ -0,0 +1,162 @@ +/* + * Copyright (c) 2009 Princeton University, and + * Regents of the University of California + * 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: Hangsheng Wang (Orion 1.0, Princeton) + * Xinping Zhu (Orion 1.0, Princeton) + * Xuning Chen (Orion 1.0, Princeton) + * Bin Li (Orion 2.0, Princeton) + * Kambiz Samadi (Orion 2.0, UC San Diego) + */ + +#include <iostream> +#include <cmath> + +#include "mem/ruby/network/orion/Crossbar/MultreeCrossbar.hh" +#include "mem/ruby/network/orion/TechParameter.hh" + +using namespace std; + +MultreeCrossbar::MultreeCrossbar( + const string& conn_type_str_, + const string& trans_type_str_, + uint32_t num_in_, + uint32_t num_out_, + uint32_t data_width_, + uint32_t degree_, + const TechParameter *tech_param_ptr_ + ) : Crossbar( + MULTREE_CROSSBAR, conn_type_str_, trans_type_str_, + num_in_, num_out_, data_width_, 0, 0, degree_, tech_param_ptr_) +{ + m_len_req_wire = 0; + init(); +} + +MultreeCrossbar::~MultreeCrossbar() +{} + +double MultreeCrossbar::get_dynamic_energy(bool is_max_) const +{ + double e_atomic; + double e_access = 0; + + e_atomic = m_e_chg_in*m_data_width*(is_max_? 1:0.5); + e_access += e_atomic; + + e_atomic = m_e_chg_out*m_data_width*(is_max_? 1:0.5); + e_access += e_atomic; + + e_atomic = m_e_chg_ctr; + e_access += e_atomic; + + if (m_depth > 1) + { + e_atomic = m_e_chg_int*m_data_width*(m_depth-1)*(is_max_? 1:0.5); + e_access += e_atomic; + } + + return e_access; +} + +void MultreeCrossbar::init() +{ + double CrsbarCellWidth = m_tech_param_ptr->get_CrsbarCellWidth(); + double CCmetal = m_tech_param_ptr->get_CCmetal(); + double Lamda = m_tech_param_ptr->get_Lamda(); + double CC3metal = m_tech_param_ptr->get_CC3metal(); + + double len_in_wire; + // input wire horizontal segment length + len_in_wire = m_num_in*m_data_width*CrsbarCellWidth*(m_num_out/2); + m_cap_in_wire = len_in_wire*CCmetal; + // input wire vertical segment length + len_in_wire = m_num_in*m_data_width*(5*Lamda)*(m_num_out/2); + m_cap_in_wire += len_in_wire*CC3metal; + m_cap_out_wire = 0; + + double Cmetal = m_tech_param_ptr->get_Cmetal(); + double len_ctr_wire = m_num_in*m_data_width*CrsbarCellWidth*(m_num_out/2)/2; + m_cap_ctr_wire = Cmetal*len_ctr_wire; + + double e_factor = m_tech_param_ptr->get_EnergyFactor(); + m_e_chg_in = calc_in_cap()*e_factor; + m_e_chg_out = calc_out_cap(m_degree)*e_factor; + m_e_chg_int = calc_int_cap()*e_factor; + + m_depth = (uint32_t)ceil(log((double)m_num_in)/log((double)m_degree)); + + // control signal should reset after transmission is done + if (m_depth == 1) + { + // only one level of control sigal + m_e_chg_ctr = calc_ctr_cap(m_cap_ctr_wire, 0, 0)*e_factor; + } + else + { + // first level and last level control signals + m_e_chg_ctr = calc_ctr_cap(m_cap_ctr_wire, 0, 1)*e_factor + calc_ctr_cap(0, 1, 0)*e_factor; + // intermediate control signals + if (m_depth > 2) + { + m_e_chg_ctr += (m_depth-2)*calc_ctr_cap(0, 1, 1)*e_factor; + } + } + + m_i_static = calc_i_static(); +} + +double MultreeCrossbar::calc_i_static() +{ + double Wdecinvn = m_tech_param_ptr->get_Wdecinvn(); + double Wdecinvp = m_tech_param_ptr->get_Wdecinvp(); + double Woutdrivern = m_tech_param_ptr->get_Woutdrivern(); + double Woutdriverp = m_tech_param_ptr->get_Woutdriverp(); + double WdecNORn = m_tech_param_ptr->get_WdecNORn(); + double WdecNORp = m_tech_param_ptr->get_WdecNORp(); + double NOR2_TAB_0 = m_tech_param_ptr->get_NOR2_TAB(0); + double NOR2_TAB_1 = m_tech_param_ptr->get_NOR2_TAB(1); + double NOR2_TAB_2 = m_tech_param_ptr->get_NOR2_TAB(2); + double NOR2_TAB_3 = m_tech_param_ptr->get_NOR2_TAB(3); + double NMOS_TAB_0 = m_tech_param_ptr->get_NMOS_TAB(0); + double PMOS_TAB_0 = m_tech_param_ptr->get_PMOS_TAB(0); + + double i_static = 0; + + // input driver + i_static += (Wdecinvn*NMOS_TAB_0+Wdecinvp*PMOS_TAB_0)*m_num_in*m_data_width; + + // output driver + i_static += (Woutdrivern*NMOS_TAB_0+Woutdriverp*PMOS_TAB_0)*m_num_out*m_data_width; + + // mux + i_static += (WdecNORp*NOR2_TAB_0+WdecNORn*(NOR2_TAB_1+NOR2_TAB_2+NOR2_TAB_3))/4*(2*m_num_in-1)*m_num_out*m_data_width; + + // control signal inverter + i_static += (Wdecinvn*NMOS_TAB_0+Wdecinvp*PMOS_TAB_0)*m_num_in*m_num_out; + return i_static; +} |