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Diffstat (limited to 'src/mem/ruby/network/orion/Wire.cc')
| -rw-r--r-- | src/mem/ruby/network/orion/Wire.cc | 391 |
1 files changed, 0 insertions, 391 deletions
diff --git a/src/mem/ruby/network/orion/Wire.cc b/src/mem/ruby/network/orion/Wire.cc deleted file mode 100644 index 3bbd615f3..000000000 --- a/src/mem/ruby/network/orion/Wire.cc +++ /dev/null @@ -1,391 +0,0 @@ -/* - * Copyright (c) 2009 Princeton University - * Copyright (c) 2009 The 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 <cmath> -#include <cstdlib> -#include <iostream> - -#include "base/misc.hh" -#include "mem/ruby/network/orion/TechParameter.hh" -#include "mem/ruby/network/orion/Wire.hh" - -using namespace std; - -Wire::Wire( - const string& wire_spacing_model_str_, - const string& buf_scheme_str_, - bool is_shielding_, - const TechParameter* tech_param_ptr_ -) -{ - set_width_spacing_model(wire_spacing_model_str_); - set_buf_scheme(buf_scheme_str_); - - m_is_shielding = is_shielding_; - - m_tech_param_ptr = tech_param_ptr_; - - if (m_tech_param_ptr->get_tech_node() > 90) - { - cerr << "ERROR: Wire model only support tech node <= 90" << endl; - exit(1); - } - - init(); -} - -Wire::~Wire() -{} - -// OPTIMUM K and H CALCULATION -// Computes the optimum number and size of repeaters for the link -void Wire::calc_opt_buffering( - int* k_, - double* h_, - double len_ - ) const -{ - double BufferDriveResistance = m_tech_param_ptr->get_BufferDriveResistance(); - double BufferInputCapacitance = m_tech_param_ptr->get_BufferInputCapacitance(); - switch(m_buf_scheme) - { - case MIN_DELAY: - { - if (m_is_shielding) - { - double r = m_res_unit_len*len_; - double c_g = 2*m_gnd_cap_unit_len*len_; - double c_c = 2*m_couple_cap_unit_len*len_; - *k_ = (int) sqrt(((0.4*r*c_g)+(0.57*r*c_c))/ - (0.7*BufferDriveResistance*BufferInputCapacitance)); //k is the number of buffers to be inserted - *h_ = sqrt(((0.7*BufferDriveResistance*c_g)+ - (1.4*1.5*BufferDriveResistance*c_c))/(0.7*r*BufferInputCapacitance)); //the size of the buffers to be inserted - break; - } - else - { - double r = m_res_unit_len*len_; - double c_g = 2*m_gnd_cap_unit_len*len_; - double c_c = 2*m_couple_cap_unit_len*len_; - *k_ = (int) sqrt(((0.4*r*c_g)+(1.51*r*c_c))/ - (0.7*BufferDriveResistance*BufferInputCapacitance)); - *h_ = sqrt(((0.7*BufferDriveResistance*c_g)+ - (1.4*2.2*BufferDriveResistance*c_c))/(0.7*r*BufferInputCapacitance)); - break; - } - } - case STAGGERED: - { - double r = m_res_unit_len*len_; - double c_g = 2*m_gnd_cap_unit_len*len_; - double c_c = 2*m_couple_cap_unit_len*len_; - - *k_ = (int) sqrt(((0.4*r*c_g)+(0.57*r*c_c))/ - (0.7*BufferDriveResistance*BufferInputCapacitance)); - *h_ = sqrt(((0.7*BufferDriveResistance*c_g)+ - (1.4*1.5*BufferDriveResistance*c_c))/(0.7*r*BufferInputCapacitance)); - break; - } - default: - { - // make gcc happy although all the cases of the enum - // are already covered - *k_ = 0; - *h_ = 0; - break; - } - } - return; -} - -double Wire::calc_dynamic_energy(double len_) const -{ - - double c_g = 2*m_gnd_cap_unit_len*len_; - double c_c = 2*m_couple_cap_unit_len*len_; - double cap_wire = c_g + c_c; - - int k; - double h; - - calc_opt_buffering(&k, &h, len_); - - double BufferInputCapacitance = m_tech_param_ptr->get_BufferInputCapacitance(); - double cap_buf = ((double)k)*BufferInputCapacitance*h; - - double e_factor = m_tech_param_ptr->get_EnergyFactor(); - return ((cap_wire+cap_buf)*e_factor); -} - -double Wire::calc_static_power(double len_) const -{ - int k; - double h; - calc_opt_buffering(&k, &h, len_); - - double BufferNMOSOffCurrent = m_tech_param_ptr->get_BufferNMOSOffCurrent(); - double BufferPMOSOffCurrent = m_tech_param_ptr->get_BufferPMOSOffCurrent(); - double i_static_nmos = BufferNMOSOffCurrent*h*k; - double i_static_pmos = BufferPMOSOffCurrent*h*k; - - double vdd = m_tech_param_ptr->get_vdd(); - return (vdd*(i_static_pmos+i_static_nmos)/2); -} - -void Wire::init() -{ - m_res_unit_len = calc_res_unit_len(); - m_gnd_cap_unit_len = calc_gnd_cap_unit_len(); - m_couple_cap_unit_len = calc_couple_cap_unit_len(); - return; -} - -void Wire::set_width_spacing_model( - const string& wire_spacing_model_str_ - ) -{ - if (wire_spacing_model_str_ == string("SWIDTH_SSPACE")) - { - m_width_spacing_model = SWIDTH_SSPACE; - } - else if (wire_spacing_model_str_ == string("SWIDTH_DSPACE")) - { - m_width_spacing_model = SWIDTH_DSPACE; - } - else if (wire_spacing_model_str_ == string("DWIDTH_SSPACE")) - { - m_width_spacing_model = DWIDTH_SSPACE; - } - else if (wire_spacing_model_str_ == string("DWIDTH_DSPACE")) - { - m_width_spacing_model = DWIDTH_DSPACE; - } - else - { - cerr << "ERROR: Invalid wire width/spacing model" << endl; - exit(1); - } - return; -} - -void Wire::set_buf_scheme( - const string& buf_scheme_str_ - ) -{ - if (buf_scheme_str_ == string("MIN_DELAY")) - { - m_buf_scheme = MIN_DELAY; - } - else if (buf_scheme_str_ == string("STAGGERED")) - { - m_buf_scheme = STAGGERED; - } - else - { - cerr << "ERROR: Invalid wire buf scheme" << endl; - exit(1); - } - return; -} - -// The following function computes the wire resistance considering -// width-spacing combination and a width-dependent resistivity model -double Wire::calc_res_unit_len() -{ - double r = -1.0; - double rho; - // r, rho is in ohm.m - - double WireMinWidth = m_tech_param_ptr->get_WireMinWidth(); - double WireBarrierThickness = m_tech_param_ptr->get_WireBarrierThickness(); - double WireMetalThickness = m_tech_param_ptr->get_WireMetalThickness(); - - switch(m_width_spacing_model) - { - case SWIDTH_SSPACE: - case SWIDTH_DSPACE: - rho = 2.202e-8 + (1.030e-15 / (WireMinWidth - 2*WireBarrierThickness)); - r = ((rho) / ((WireMinWidth - 2*WireBarrierThickness) * - (WireMetalThickness - WireBarrierThickness))); - break; - case DWIDTH_SSPACE: - case DWIDTH_DSPACE: - rho = 2.202e-8 + (1.030e-15 / (2*WireMinWidth - 2*WireBarrierThickness)); - r = ((rho) / ((2*WireMinWidth - 2*WireBarrierThickness) * - (WireMetalThickness - WireBarrierThickness))); - break; - default: - warn("Orion: Width spacing model not found: %s\n", m_width_spacing_model); - r = 1.0; - } - return r; -} - -// COMPUTE WIRE CAPACITANCE using PTM models -double Wire::calc_gnd_cap_unit_len() -{ - // c_g is in F - double c_g = -1.0; - - double WireMinWidth = m_tech_param_ptr->get_WireMinWidth(); - double WireMinSpacing = m_tech_param_ptr->get_WireMinSpacing(); - double WireMetalThickness = m_tech_param_ptr->get_WireMetalThickness(); - double WireDielectricThickness = m_tech_param_ptr->get_WireDielectricThickness(); - double WireDielectricConstant = m_tech_param_ptr->get_WireDielectricConstant(); - - switch(m_width_spacing_model) - { - case SWIDTH_SSPACE: - { - double A = (WireMinWidth/WireDielectricThickness); - double B = 2.04*pow((WireMinSpacing/(WireMinSpacing + - 0.54*WireDielectricThickness)), 1.77); - double C = pow((WireMetalThickness/(WireMetalThickness + - 4.53*WireDielectricThickness)), 0.07); - c_g = WireDielectricConstant*8.85e-12*(A+(B*C)); - break; - } - case SWIDTH_DSPACE: - { - double minSpacingNew = 2*WireMinSpacing + WireMinWidth; - double A = (WireMinWidth/WireDielectricThickness); - double B = 2.04*pow((minSpacingNew/(minSpacingNew + - 0.54*WireDielectricThickness)), 1.77); - double C = pow((WireMetalThickness/(WireMetalThickness + - 4.53*WireDielectricThickness)), 0.07); - c_g = WireDielectricConstant*8.85e-12*(A+(B*C)); - break; - } - case DWIDTH_SSPACE: - { - double minWidthNew = 2*WireMinWidth; - double A = (minWidthNew/WireDielectricThickness); - double B = 2.04*pow((WireMinSpacing/(WireMinSpacing + - 0.54*WireDielectricThickness)), 1.77); - double C = pow((WireMetalThickness/(WireMetalThickness + - 4.53*WireDielectricThickness)), 0.07); - c_g = WireDielectricConstant*8.85e-12*(A+(B*C)); - break; - } - case DWIDTH_DSPACE: - { - double minWidthNew = 2*WireMinWidth; - double minSpacingNew = 2*WireMinSpacing; - double A = (minWidthNew/WireDielectricThickness); - double B = 2.04*pow((minSpacingNew/(minSpacingNew+ - 0.54*WireDielectricThickness)), 1.77); - double C = pow((WireMetalThickness/(WireMetalThickness + - 4.53*WireDielectricThickness)), 0.07); - c_g = WireDielectricConstant*8.85e-12*(A+(B*C)); - break; - } - default: - warn("Orion: Width spacing model not found: %s\n", m_width_spacing_model); - c_g = 1.0; - } - - return c_g; -} - -// Computes the coupling capacitance considering cross-talk -double Wire::calc_couple_cap_unit_len() -{ - //c_c is in F - double c_c = -1.0; - - double WireMinWidth = m_tech_param_ptr->get_WireMinWidth(); - double WireMinSpacing = m_tech_param_ptr->get_WireMinSpacing(); - double WireMetalThickness = m_tech_param_ptr->get_WireMetalThickness(); - double WireDielectricThickness = m_tech_param_ptr->get_WireDielectricThickness(); - double WireDielectricConstant = m_tech_param_ptr->get_WireDielectricConstant(); - - switch(m_width_spacing_model) - { - case SWIDTH_SSPACE: - { - double A = 1.14*(WireMetalThickness/WireMinSpacing) * - exp(-4*WireMinSpacing/(WireMinSpacing + 8.01*WireDielectricThickness)); - double B = 2.37*pow((WireMinWidth/(WireMinWidth + 0.31*WireMinSpacing)), 0.28); - double C = pow((WireDielectricThickness/(WireDielectricThickness + - 8.96*WireMinSpacing)), 0.76) * - exp(-2*WireMinSpacing/(WireMinSpacing + 6*WireDielectricThickness)); - c_c = WireDielectricConstant*8.85e-12*(A + (B*C)); - break; - } - case SWIDTH_DSPACE: - { - double minSpacingNew = 2*WireMinSpacing + WireMinWidth; - double A = 1.14*(WireMetalThickness/minSpacingNew) * - exp(-4*minSpacingNew/(minSpacingNew + 8.01*WireDielectricThickness)); - double B = 2.37*pow((WireMinWidth/(WireMinWidth + 0.31*minSpacingNew)), 0.28); - double C = pow((WireDielectricThickness/(WireDielectricThickness + - 8.96*minSpacingNew)), 0.76) * - exp(-2*minSpacingNew/(minSpacingNew + 6*WireDielectricThickness)); - c_c = WireDielectricConstant*8.85e-12*(A + (B*C)); - break; - } - case DWIDTH_SSPACE: - { - double minWidthNew = 2*WireMinWidth; - double A = 1.14*(WireMetalThickness/WireMinSpacing) * - exp(-4*WireMinSpacing/(WireMinSpacing + 8.01*WireDielectricThickness)); - double B = 2.37*pow((2*minWidthNew/(2*minWidthNew + 0.31*WireMinSpacing)), 0.28); - double C = pow((WireDielectricThickness/(WireDielectricThickness + - 8.96*WireMinSpacing)), 0.76) * - exp(-2*WireMinSpacing/(WireMinSpacing + 6*WireDielectricThickness)); - c_c = WireDielectricConstant*8.85e-12*(A + (B*C)); - break; - } - case DWIDTH_DSPACE: - { - double minWidthNew = 2*WireMinWidth; - double minSpacingNew = 2*WireMinSpacing; - double A = 1.14*(WireMetalThickness/minSpacingNew) * - exp(-4*minSpacingNew/(minSpacingNew + 8.01*WireDielectricThickness)); - double B = 2.37*pow((minWidthNew/(minWidthNew + 0.31*minSpacingNew)), 0.28); - double C = pow((WireDielectricThickness/(WireDielectricThickness + - 8.96*minSpacingNew)), 0.76) * - exp(-2*minSpacingNew/(minSpacingNew + 6*WireDielectricThickness)); - c_c = WireDielectricConstant*8.85e-12*(A + (B*C)); - break; - } - default: - warn("Orion: Width spacing model not found: %s\n", m_width_spacing_model); - c_c = 1.0; - } - - return c_c; -} - |