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.
96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
/*****************************************************************************
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* McPAT
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* SOFTWARE LICENSE AGREEMENT
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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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* Author: Joel Hestness
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*
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***************************************************************************/
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#ifndef BUS_INTERCONNECT_H_
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#define BUS_INTERCONNECT_H_
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#include "array.h"
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#include "basic_components.h"
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#include "interconnect.h"
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#include "logic.h"
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#include "parameter.h"
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class BusInterconnectParameters {
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public:
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double clockRate;
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int flit_size;
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int input_ports;
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int output_ports;
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int min_ports;
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int global_linked_ports;
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int virtual_channel_per_port;
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int input_buffer_entries_per_vc;
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int total_nodes;
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double link_throughput;
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double link_latency;
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double chip_coverage;
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bool pipelinable;
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double route_over_perc;
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bool has_global_link;
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bool type;
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double M_traffic_pattern;
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double link_base_width;
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double link_base_height;
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int link_start_wiring_level;
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};
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class BusInterconnectStatistics {
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public:
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double duty_cycle;
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double total_access;
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};
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class BusInterconnect : public McPATComponent {
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public:
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Interconnect* link_bus;
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int ithNoC;
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InputParameter interface_ip;
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double link_len;
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double scktRatio, chip_PR_overhead, macro_PR_overhead;
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BusInterconnectParameters bus_params;
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BusInterconnectStatistics bus_stats;
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uca_org_t local_result;
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statsDef stats_t;
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double M_traffic_pattern;
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BusInterconnect(XMLNode* _xml_data, InputParameter* interface_ip_);
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void set_param_stats();
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void set_duty_cycle(double duty_cycle);
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void set_number_of_accesses(double total_accesses);
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void computeEnergy();
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~BusInterconnect();
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};
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#endif /* BUS_INTERCONNECT_H_ */
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