0deef376d9
This patch includes software engineering changes and some generic bug fixes
Joel Hestness and Yasuko Eckert made to McPAT 0.8. There are still known
issues/concernts we did not have a chance to address in this patch.
High-level changes in this patch include:
1) Making XML parsing modular and hierarchical:
- Shift parsing responsibility into the components
- Read XML in a (mostly) context-free recursive manner so that McPAT input
files can contain arbitrary component hierarchies
2) Making power, energy, and area calculations a hierarchical and recursive
process
- Components track their subcomponents and recursively call compute
functions in stages
- Make C++ object hierarchy reflect inheritance of classes of components
with similar structures
- Simplify computeArea() and computeEnergy() functions to eliminate
successive calls to calculate separate TDP vs. runtime energy
- Remove Processor component (now unnecessary) and introduce a more abstract
System component
3) Standardizing McPAT output across all components
- Use a single, common data structure for storing and printing McPAT output
- Recursively call print functions through component hierarchy
4) For caches, allow splitting data array and tag array reads and writes for
better accuracy
5) Improving the usability of CACTI by printing more helpful warning and error
messages
6) Minor: Impose more rigorous code style for clarity (more work still to be
done)
Overall, these changes greatly reduce the amount of replicated code, and they
improve McPAT runtime and decrease memory footprint.
118 lines
4.2 KiB
C++
118 lines
4.2 KiB
C++
/*****************************************************************************
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* McPAT
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* SOFTWARE LICENSE AGREEMENT
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* Copyright 2012 Hewlett-Packard Development Company, L.P.
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* Copyright (c) 2010-2013 Advanced Micro Devices, Inc.
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* All Rights Reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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***************************************************************************/
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#ifndef __INTERCONNECT_H__
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#define __INTERCONNECT_H__
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#include "assert.h"
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#include "basic_circuit.h"
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#include "basic_components.h"
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#include "cacti_interface.h"
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#include "component.h"
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#include "parameter.h"
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#include "subarray.h"
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#include "wire.h"
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class InterconnectParameters {
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public:
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double active_ports;
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};
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class InterconnectStatistics {
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public:
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double duty_cycle;
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double accesses;
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};
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class Interconnect : public McPATComponent {
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public:
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static double width_scaling_threshold;
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enum Device_ty device_ty;
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double in_rise_time, out_rise_time;
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InputParameter l_ip;
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uca_org_t local_result;
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Area no_device_under_wire_area;
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double max_unpipelined_link_delay;
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powerDef power_bit;
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double wire_bw;
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double init_wire_bw;
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double base_width;
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double base_height;
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int data_width;
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enum Wire_type wt;
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double width_scaling, space_scaling;
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int start_wiring_level;
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double length;
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double min_w_nmos;
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double min_w_pmos;
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double latency, throughput;
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bool latency_overflow;
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bool throughput_overflow;
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double interconnect_latency;
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double interconnect_throughput;
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bool opt_local;
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enum Core_type core_ty;
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bool pipelinable;
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double route_over_perc;
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int num_pipe_stages;
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TechnologyParameter::DeviceType* deviceType;
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InterconnectParameters int_params;
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InterconnectStatistics int_stats;
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Interconnect(XMLNode* _xml_data, string name_,
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enum Device_ty device_ty_, double base_w,
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double base_h, int data_w, double len,
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const InputParameter *configure_interface,
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int start_wiring_level_,
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double _clockRate = 0.0f,
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bool pipelinable_ = false, double route_over_perc_ = 0.5,
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bool opt_local_ = true, enum Core_type core_ty_ = Inorder,
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enum Wire_type wire_model = Global, double width_s = 1.0,
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double space_s = 1.0,
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TechnologyParameter::DeviceType *dt = &(g_tp.peri_global));
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private:
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void calcWireData();
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public:
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void computeArea();
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void computeEnergy();
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void set_params_stats(double active_ports,
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double duty_cycle, double accesses);
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void leakage_feedback(double temperature);
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~Interconnect() {};
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};
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#endif
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