diff options
| author | Mahmoud <[email protected]> | 2020-05-23 20:06:25 -0400 |
|---|---|---|
| committer | Mahmoud <[email protected]> | 2020-05-23 20:06:25 -0400 |
| commit | d610fd81420979e956bf37100f7e1c7f1d153831 (patch) | |
| tree | 392a841f21fec5136339ff36ad9b5c7b1b4cb480 /src/gpuwattch/interconnect.cc | |
| parent | 6cedd3ef4973f3785757413db89a7c5d0ee2b58b (diff) | |
| parent | e9e9fcf5957530ecb927aecb5ea238e4b78a4f45 (diff) | |
Merge branch 'dev' of https://github.com/purdue-aalp/gpgpu-sim_distribution into dev-traces
Diffstat (limited to 'src/gpuwattch/interconnect.cc')
| -rw-r--r-- | src/gpuwattch/interconnect.cc | 201 |
1 files changed, 90 insertions, 111 deletions
diff --git a/src/gpuwattch/interconnect.cc b/src/gpuwattch/interconnect.cc index f109da7..caf66b3 100644 --- a/src/gpuwattch/interconnect.cc +++ b/src/gpuwattch/interconnect.cc @@ -29,63 +29,51 @@ * ***************************************************************************/ - #include "interconnect.h" -#include "wire.h" #include <assert.h> #include <iostream> #include "globalvar.h" +#include "wire.h" -interconnect::interconnect( - string name_, - enum Device_ty device_ty_, - double base_w, double base_h, - int data_w, double len,const InputParameter *configure_interface, - int start_wiring_level_, - bool pipelinable_ , - double route_over_perc_ , - bool opt_local_, - enum Core_type core_ty_, - enum Wire_type wire_model, - double width_s, double space_s, - TechnologyParameter::DeviceType *dt -) - :name(name_), - device_ty(device_ty_), - in_rise_time(0), - out_rise_time(0), - base_width(base_w), - base_height(base_h), - data_width(data_w), - wt(wire_model), - width_scaling(width_s), - space_scaling(space_s), - start_wiring_level(start_wiring_level_), - length(len), - //interconnect_latency(1e-12), - //interconnect_throughput(1e-12), - opt_local(opt_local_), - core_ty(core_ty_), - pipelinable(pipelinable_), - route_over_perc(route_over_perc_), - deviceType(dt) -{ - +interconnect::interconnect(string name_, enum Device_ty device_ty_, + double base_w, double base_h, int data_w, double len, + const InputParameter *configure_interface, + int start_wiring_level_, bool pipelinable_, + double route_over_perc_, bool opt_local_, + enum Core_type core_ty_, enum Wire_type wire_model, + double width_s, double space_s, + TechnologyParameter::DeviceType *dt) + : name(name_), + device_ty(device_ty_), + in_rise_time(0), + out_rise_time(0), + base_width(base_w), + base_height(base_h), + data_width(data_w), + wt(wire_model), + width_scaling(width_s), + space_scaling(space_s), + start_wiring_level(start_wiring_level_), + length(len), + // interconnect_latency(1e-12), + // interconnect_throughput(1e-12), + opt_local(opt_local_), + core_ty(core_ty_), + pipelinable(pipelinable_), + route_over_perc(route_over_perc_), + deviceType(dt) { wt = Global; - l_ip=*configure_interface; + l_ip = *configure_interface; local_result = init_interface(&l_ip); - - max_unpipelined_link_delay = 0; //TODO + max_unpipelined_link_delay = 0; // TODO min_w_nmos = g_tp.min_w_nmos_; min_w_pmos = deviceType->n_to_p_eff_curr_drv_ratio * min_w_nmos; - - - latency = l_ip.latency; - throughput = l_ip.throughput; - latency_overflow=false; - throughput_overflow=false; + latency = l_ip.latency; + throughput = l_ip.throughput; + latency_overflow = false; + throughput_overflow = false; /* * TODO: Add wiring option from semi-global to global automatically @@ -96,66 +84,62 @@ interconnect::interconnect( * not have fat wires. */ if (pipelinable == false) - //Non-pipelinable wires, such as bypass logic, care latency + // Non-pipelinable wires, such as bypass logic, care latency { - compute(); - if (opt_for_clk && opt_local) - { - while (delay > latency && width_scaling<3.0) - { - width_scaling *= 2; - space_scaling *= 2; - Wire winit(width_scaling, space_scaling); - compute(); - } - if (delay > latency) - { - latency_overflow=true; - } - } - } - else //Pipelinable wires, such as bus, does not care latency but throughput + compute(); + if (opt_for_clk && opt_local) { + while (delay > latency && width_scaling < 3.0) { + width_scaling *= 2; + space_scaling *= 2; + Wire winit(width_scaling, space_scaling); + compute(); + } + if (delay > latency) { + latency_overflow = true; + } + } + } else // Pipelinable wires, such as bus, does not care latency but + // throughput { - /* - * TODO: Add pipe regs power, area, and timing; - * Pipelinable wires optimize latency first. - */ - compute(); - if (opt_for_clk && opt_local) - { - while (delay > throughput && width_scaling<3.0) - { - width_scaling *= 2; - space_scaling *= 2; - Wire winit(width_scaling, space_scaling); - compute(); - } - if (delay > throughput) - // insert pipeline stages - { - num_pipe_stages = (int)ceil(delay/throughput); - assert(num_pipe_stages>0); - delay = delay/num_pipe_stages + num_pipe_stages*0.05*delay; - } - } + /* + * TODO: Add pipe regs power, area, and timing; + * Pipelinable wires optimize latency first. + */ + compute(); + if (opt_for_clk && opt_local) { + while (delay > throughput && width_scaling < 3.0) { + width_scaling *= 2; + space_scaling *= 2; + Wire winit(width_scaling, space_scaling); + compute(); + } + if (delay > throughput) + // insert pipeline stages + { + num_pipe_stages = (int)ceil(delay / throughput); + assert(num_pipe_stages > 0); + delay = delay / num_pipe_stages + num_pipe_stages * 0.05 * delay; + } + } } power_bit = power; power.readOp.dynamic *= data_width; power.readOp.leakage *= data_width; power.readOp.gate_leakage *= data_width; - area.set_area(area.get_area()*data_width); + area.set_area(area.get_area() * data_width); no_device_under_wire_area.h *= data_width; - if (latency_overflow==true) - cout<< "Warning: "<< name <<" wire structure cannot satisfy latency constraint." << endl; - + if (latency_overflow == true) + cout << "Warning: " << name + << " wire structure cannot satisfy latency constraint." << endl; assert(power.readOp.dynamic > 0); assert(power.readOp.leakage > 0); assert(power.readOp.gate_leakage > 0); - double long_channel_device_reduction = longer_channel_device_reduction(device_ty,core_ty); + double long_channel_device_reduction = + longer_channel_device_reduction(device_ty, core_ty); double sckRation = g_tp.sckt_co_eff; power.readOp.dynamic *= sckRation; @@ -163,20 +147,17 @@ interconnect::interconnect( power.searchOp.dynamic *= sckRation; power.readOp.longer_channel_leakage = - power.readOp.leakage*long_channel_device_reduction; + power.readOp.leakage * long_channel_device_reduction; - if (pipelinable)//Only global wires has the option to choose whether routing over or not - area.set_area(area.get_area()*route_over_perc + no_device_under_wire_area.get_area()*(1-route_over_perc)); + if (pipelinable) // Only global wires has the option to choose whether + // routing over or not + area.set_area(area.get_area() * route_over_perc + + no_device_under_wire_area.get_area() * (1 - route_over_perc)); Wire wreset(); } - - -void -interconnect::compute() -{ - +void interconnect::compute() { Wire *wtemp1 = 0; wtemp1 = new Wire(wt, length, 1, width_scaling, space_scaling); delay = wtemp1->delay; @@ -185,18 +166,15 @@ interconnect::compute() power.readOp.gate_leakage = wtemp1->power.readOp.gate_leakage; area.set_area(wtemp1->area.get_area()); - no_device_under_wire_area.h = (wtemp1->wire_width + wtemp1->wire_spacing); + no_device_under_wire_area.h = (wtemp1->wire_width + wtemp1->wire_spacing); no_device_under_wire_area.w = length; - if (wtemp1) - delete wtemp1; - + if (wtemp1) delete wtemp1; } -void interconnect::leakage_feedback(double temperature) -{ - l_ip.temp = (unsigned int)round(temperature/10.0)*10; - uca_org_t init_result = init_interface(&l_ip); // init_result is dummy +void interconnect::leakage_feedback(double temperature) { + l_ip.temp = (unsigned int)round(temperature / 10.0) * 10; + uca_org_t init_result = init_interface(&l_ip); // init_result is dummy compute(); @@ -209,13 +187,14 @@ void interconnect::leakage_feedback(double temperature) assert(power.readOp.leakage > 0); assert(power.readOp.gate_leakage > 0); - double long_channel_device_reduction = longer_channel_device_reduction(device_ty,core_ty); + double long_channel_device_reduction = + longer_channel_device_reduction(device_ty, core_ty); double sckRation = g_tp.sckt_co_eff; power.readOp.dynamic *= sckRation; power.writeOp.dynamic *= sckRation; power.searchOp.dynamic *= sckRation; - power.readOp.longer_channel_leakage = power.readOp.leakage*long_channel_device_reduction; + power.readOp.longer_channel_leakage = + power.readOp.leakage * long_channel_device_reduction; } - |
