268 lines
7.7 KiB
C++
268 lines
7.7 KiB
C++
/*
|
|
* Copyright (c) 2003 The Regents of The University of Michigan
|
|
* 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.
|
|
*/
|
|
|
|
#include <sstream>
|
|
|
|
#include "base/sat_counter.hh"
|
|
#include "base/statistics.hh"
|
|
#include "sim/stats.hh"
|
|
|
|
|
|
using namespace std;
|
|
|
|
|
|
SaturatingCounterPred::SaturatingCounterPred(string p_name,
|
|
string z_name,
|
|
string o_name,
|
|
unsigned _index_bits,
|
|
unsigned _counter_bits,
|
|
unsigned _zero_change,
|
|
unsigned _one_change,
|
|
unsigned _thresh,
|
|
unsigned _init_value)
|
|
{
|
|
pred_name = p_name;
|
|
zero_name = z_name;
|
|
one_name = o_name;
|
|
|
|
index_bits = _index_bits;
|
|
counter_bits = _counter_bits;
|
|
zero_change = _zero_change;
|
|
one_change = _one_change;
|
|
thresh = _thresh;
|
|
init_value = _init_value;
|
|
|
|
max_index = (1 << index_bits) - 1;
|
|
max_value = (1 << counter_bits) - 1;
|
|
|
|
table = new unsigned[max_index + 1];
|
|
|
|
// Initialize with the right parameters & clear the counter
|
|
for (int i = 0; i <= max_index; ++i)
|
|
table[i] = init_value;
|
|
}
|
|
|
|
void SaturatingCounterPred::regStats()
|
|
{
|
|
using namespace Stats;
|
|
stringstream name, description;
|
|
|
|
//
|
|
// Number of predictions
|
|
//
|
|
name << pred_name << ":" << zero_name << ":preds";
|
|
description << "number of predictions of " << zero_name;
|
|
predicted_zero
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
description.str("");
|
|
name.str("");
|
|
|
|
name << pred_name << ":" << one_name << ":preds";
|
|
description << "number of predictions of " << one_name;
|
|
predicted_one
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
description.str("");
|
|
name.str("");
|
|
|
|
//
|
|
// Count the number of correct predictions
|
|
//
|
|
name << pred_name << ":" << zero_name << ":corr_preds";
|
|
description << "number of correct " << zero_name << " preds";
|
|
correct_pred_zero
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
description.str("");
|
|
name.str("");
|
|
|
|
name << pred_name << ":" << one_name << ":corr_preds";
|
|
description << "number of correct " << one_name << " preds";
|
|
correct_pred_one
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
description.str("");
|
|
name.str("");
|
|
|
|
//
|
|
// Number of predictor updates
|
|
//
|
|
name << pred_name << ":" << zero_name << ":updates";
|
|
description << "number of actual " << zero_name << "s";
|
|
record_zero
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
description.str("");
|
|
name.str("");
|
|
|
|
name << pred_name << ":" << one_name << ":updates";
|
|
description << "number of actual " << one_name << "s";
|
|
record_one
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
description.str("");
|
|
name.str("");
|
|
}
|
|
|
|
void SaturatingCounterPred::regFormulas()
|
|
{
|
|
using namespace Stats;
|
|
stringstream name, description;
|
|
|
|
//
|
|
// Number of predictions
|
|
//
|
|
name << pred_name << ":predictions";
|
|
preds_total
|
|
.name(name.str())
|
|
.desc("total number of predictions made")
|
|
;
|
|
preds_total = predicted_zero + predicted_one;
|
|
name.str("");
|
|
|
|
//
|
|
// Fraction of all predictions that are one or zero
|
|
//
|
|
name << pred_name << ":" << zero_name << ":pred_frac";
|
|
description << "fraction of all preds that were " << zero_name;
|
|
pred_frac_zero
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
pred_frac_zero = 100 * predicted_zero / preds_total;
|
|
description.str("");
|
|
name.str("");
|
|
|
|
name << pred_name << ":" << one_name << ":pred_frac";
|
|
description << "fraction of all preds that were " << one_name;
|
|
pred_frac_one
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
pred_frac_one = 100 * predicted_one / preds_total;
|
|
description.str("");
|
|
name.str("");
|
|
|
|
|
|
//
|
|
// Count the number of correct predictions
|
|
//
|
|
name << pred_name << ":correct_preds";
|
|
correct_total
|
|
.name(name.str())
|
|
.desc("total correct predictions made")
|
|
;
|
|
correct_total = correct_pred_one + correct_pred_zero;
|
|
name.str("");
|
|
|
|
//
|
|
// Number of predictor updates
|
|
//
|
|
name << pred_name << ":updates";
|
|
updates_total
|
|
.name(name.str())
|
|
.desc("total number of updates")
|
|
;
|
|
updates_total = record_zero + record_one;
|
|
name.str("");
|
|
|
|
//
|
|
// Prediction accuracy rates
|
|
//
|
|
name << pred_name << ":pred_rate";
|
|
pred_rate
|
|
.name(name.str())
|
|
.desc("correct fraction of all preds")
|
|
;
|
|
pred_rate = correct_total / updates_total;
|
|
name.str("");
|
|
|
|
name << pred_name << ":" << zero_name << ":pred_rate";
|
|
description << "fraction of " << zero_name << " preds that were correct";
|
|
frac_correct_zero
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
frac_correct_zero = 100 * correct_pred_zero /
|
|
(correct_pred_zero + record_one - correct_pred_one);
|
|
description.str("");
|
|
name.str("");
|
|
|
|
name << pred_name << ":" << one_name << ":pred_rate";
|
|
description << "fraction of " << one_name << " preds that were correct";
|
|
frac_correct_one
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
frac_correct_one = 100 * correct_pred_one /
|
|
(correct_pred_one + record_zero - correct_pred_zero);
|
|
description.str("");
|
|
name.str("");
|
|
|
|
//
|
|
// Coverage
|
|
//
|
|
name << pred_name << ":" << zero_name << ":coverage";
|
|
description << "fraction of " << zero_name
|
|
<< "s that were predicted correctly";
|
|
coverage_zero
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
coverage_zero = 100 * correct_pred_zero / record_zero;
|
|
description.str("");
|
|
name.str("");
|
|
|
|
name << pred_name << ":" << one_name << ":coverage";
|
|
description << "fraction of " << one_name
|
|
<< "s that were predicted correctly";
|
|
coverage_one
|
|
.name(name.str())
|
|
.desc(description.str())
|
|
;
|
|
coverage_one = 100 * correct_pred_one / record_one;
|
|
description.str("");
|
|
name.str("");
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|