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.
149 lines
5.3 KiB
C++
Executable file
149 lines
5.3 KiB
C++
Executable file
/*****************************************************************************
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* McPAT/CACTI
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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 __MAT_H__
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#define __MAT_H__
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#include "component.h"
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#include "decoder.h"
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#include "subarray.h"
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#include "wire.h"
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class Mat : public Component {
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public:
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Mat(const DynamicParameter & dyn_p);
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~Mat();
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double compute_delays(double inrisetime); // return outrisetime
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void compute_power_energy();
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const DynamicParameter & dp;
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// TODO: clean up pointers and powerDefs below
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Decoder * row_dec;
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Decoder * bit_mux_dec;
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Decoder * sa_mux_lev_1_dec;
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Decoder * sa_mux_lev_2_dec;
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PredecBlk * dummy_way_sel_predec_blk1;
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PredecBlk * dummy_way_sel_predec_blk2;
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PredecBlkDrv * way_sel_drv1;
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PredecBlkDrv * dummy_way_sel_predec_blk_drv2;
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Predec * r_predec;
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Predec * b_mux_predec;
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Predec * sa_mux_lev_1_predec;
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Predec * sa_mux_lev_2_predec;
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Wire * subarray_out_wire;
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Driver * bl_precharge_eq_drv;
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Driver * cam_bl_precharge_eq_drv;//bitline pre-charge circuit is separated for CAM and RAM arrays.
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Driver * ml_precharge_drv;//matchline prechange driver
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Driver * sl_precharge_eq_drv;//searchline prechage driver
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Driver * sl_data_drv;//search line data driver
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Driver * ml_to_ram_wl_drv;//search line data driver
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powerDef power_row_decoders;
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powerDef power_bit_mux_decoders;
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powerDef power_sa_mux_lev_1_decoders;
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powerDef power_sa_mux_lev_2_decoders;
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powerDef power_fa_cam; // TODO: leakage power is not computed yet
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powerDef power_bl_precharge_eq_drv;
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powerDef power_subarray_out_drv;
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powerDef power_cam_all_active;
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powerDef power_searchline_precharge;
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powerDef power_matchline_precharge;
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powerDef power_ml_to_ram_wl_drv;
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double delay_fa_tag, delay_cam;
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double delay_before_decoder;
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double delay_bitline;
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double delay_wl_reset;
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double delay_bl_restore;
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double delay_searchline;
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double delay_matchchline;
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double delay_cam_sl_restore;
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double delay_cam_ml_reset;
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double delay_fa_ram_wl;
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double delay_hit_miss_reset;
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double delay_hit_miss;
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Subarray subarray;
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powerDef power_bitline, power_searchline, power_matchline;
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double per_bitline_read_energy;
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int deg_bl_muxing;
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int num_act_mats_hor_dir;
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double delay_writeback;
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Area cell, cam_cell;
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bool is_dram, is_fa, pure_cam, camFlag;
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int num_mats;
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powerDef power_sa;
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double delay_sa;
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double leak_power_sense_amps_closed_page_state;
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double leak_power_sense_amps_open_page_state;
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double delay_subarray_out_drv;
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double delay_subarray_out_drv_htree;
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double delay_comparator;
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powerDef power_comparator;
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int num_do_b_mat;
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int num_so_b_mat;
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int num_sa_subarray;
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int num_sa_subarray_search;
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double C_bl;
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uint32_t num_subarrays_per_mat; // the number of subarrays in a mat
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uint32_t num_subarrays_per_row; // the number of subarrays in a row of a mat
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private:
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double compute_bit_mux_sa_precharge_sa_mux_wr_drv_wr_mux_h();
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double width_write_driver_or_write_mux();
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double compute_comparators_height(int tagbits, int number_ways_in_mat, double subarray_mem_cell_area_w);
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double compute_cam_delay(double inrisetime);
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double compute_bitline_delay(double inrisetime);
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double compute_sa_delay(double inrisetime);
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double compute_subarray_out_drv(double inrisetime);
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double compute_comparator_delay(double inrisetime);
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int RWP;
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int ERP;
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int EWP;
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int SCHP;
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};
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#endif
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