gem5/base/hybrid_pred.cc
Nathan Binkert 25a358983a Major stats package cleanup
Add support for generic visitors for stats and use them
to implement independent output functions.

Support for mysql output and some initial code for hacking
on mysql output with python

arch/alpha/pseudo_inst.cc:
base/hybrid_pred.cc:
base/hybrid_pred.hh:
base/sat_counter.cc:
base/sat_counter.hh:
cpu/simple_cpu/simple_cpu.cc:
kern/tru64/tru64_events.cc:
sim/main.cc:
sim/process.cc:
sim/process.hh:
sim/sim_events.cc:
sim/sim_object.cc:
sim/system.hh:
    update for changes in stats package
base/statistics.cc:
    move the python output code to base/stats/puthon.(cc|hh)
    and reimplement it as a visitor.

    move the text output code to base/stats/text.(cc|hh) and
    reimplement it as a visitor.

    move the database stuff into base/stats/statdb.(cc|hh) and
    get rid of the class.  Put everything as globals in the
    Statistics::Database namespace.

    allocate unique ids for all stats.

    directly implement the check routine and get rid of the
    various dumping routines since they're now in separate files.

    make sure that no two stats have the same name

    clean up some loops
base/statistics.hh:
    major changes to the statistics package again

    lots of code was factored out of statistics.hh into several
    separate files in base/stats/ (this will continue)

    There are now two Stat package types Result and Counter that
    are specified to allow the user to keep the counted type
    separate from the result type.  They are currently both doubles
    but that's an experiment.  There is no more per stat ability to
    set the type.  Statistics::Counter is not the same as Counter!

    Implement a visitor for statistics output so that new output
    types can be implemented independently from the stats package
    itself.

    Add a unique id to each stat so that it can be used to keep
    track of stats more simply.  This number can also be used in
    debugging problems with stats.

    Tweak the bucket size stuff a bit to make it work better.

    fixed VectorDist size bug
cpu/memtest/memtest.cc:
    Fix up for changes in stats package
    Don't use value() since it doesn't work with binning.  If you
    want a number as a stat, and to use it in the program itself,
    you really want two separate variables, one that's a stat,
    and one that's not.
cpu/memtest/memtest.hh:
    Fix up for changes in stats package
test/Makefile:
    Try to build stuff now that directories matter
test/stattest.cc:
    test all new output types
    choose which one with command line options

--HG--
extra : convert_revision : e3a3f5f0828c67c0e2de415d936ad240adaddc89
2004-05-04 17:01:00 -04:00

273 lines
8.2 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 <string>
#include <sstream>
#include "base/hybrid_pred.hh"
#include "base/statistics.hh"
#include "sim/stats.hh"
using namespace std;
HybridPredictor::HybridPredictor(const char *_p_name, const char *_z_name,
const char *_o_name,
unsigned _index_bits, unsigned _counter_bits,
unsigned _zero_change, unsigned _one_change,
unsigned _thresh,
unsigned _global_bits,
unsigned _global_thresh,
bool _reg_individual_stats)
{
stringstream local_name, global_name;
pred_name = _p_name;
one_name = _o_name;
zero_name = _z_name;
reg_individual_stats = _reg_individual_stats;
local_name << pred_name.c_str() << ":L";
local = new SaturatingCounterPred(local_name.str(), zero_name, one_name,
_index_bits, _counter_bits,
_zero_change, _one_change, _thresh);
global_name << pred_name.c_str() << ":G";
global = new SaturatingCounterPred(global_name.str(), zero_name, one_name,
0, _global_bits, 1, 1, _global_thresh);
}
void HybridPredictor::regStats()
{
using namespace Statistics;
string p_name;
stringstream description;
if (reg_individual_stats)
p_name = pred_name + ":A";
else
p_name = pred_name;
//
// Number of predictions
//
stringstream num_zero_preds;
num_zero_preds << p_name << ":" << zero_name << ":preds";
description << "number of predictions of " << zero_name;
pred_zero
.name(num_zero_preds.str())
.desc(description.str());
description.str("");
stringstream num_one_preds;
num_one_preds << p_name << ":" << one_name << ":preds";
description << "number of predictions of " << one_name;
pred_one
.name(num_one_preds.str())
.desc(description.str())
;
description.str("");
//
// Count the number of correct predictions
//
stringstream num_zero_correct;
num_zero_correct << p_name << ":" << zero_name << ":corr_preds";
description << "number of correct " << zero_name << " preds" ;
correct_pred_zero
.name(num_zero_correct.str())
.desc(description.str())
;
description.str("");
stringstream num_one_correct;
num_one_correct << p_name << ":" << one_name << ":corr_preds";
description << "number of correct " << one_name << " preds" ;
correct_pred_one
.name(num_one_correct.str())
.desc(description.str())
;
description.str("");
//
// Number of predictor updates
//
stringstream num_zero_updates;
num_zero_updates << p_name << ":" << zero_name << ":updates" ;
description << "number of actual " << zero_name << "s" ;
record_zero
.name(num_zero_updates.str())
.desc(description.str())
;
description.str("");
stringstream num_one_updates;
num_one_updates << p_name << ":" << one_name << ":updates" ;
description << "number of actual " << one_name << "s" ;
record_one
.name(num_one_updates.str())
.desc(description.str())
;
description.str("");
//
// Local & Global predictor stats
//
if (reg_individual_stats) {
local->regStats();
global->regStats();
}
}
void HybridPredictor::regFormulas()
{
using namespace Statistics;
string p_name;
stringstream description;
stringstream name;
if (reg_individual_stats)
p_name = pred_name + ":A";
else
p_name = pred_name;
//
// Number of predictions
//
name << p_name << ":predictions" ;
total_preds
.name(name.str())
.desc("total number of predictions made")
;
total_preds = pred_one + pred_zero;
name.str("");
//
// Fraction of all predictions that are one or zero
//
name << p_name << ":" << zero_name << ":pred_frac";
description << "fraction of all preds that were " << zero_name ;
frac_preds_zero
.name(name.str())
.desc(description.str())
;
frac_preds_zero = 100 * record_zero / total_preds;
description.str("");
name.str("");
name << p_name << ":" << one_name << ":pred_frac";
description << "fraction of all preds that were " << one_name ;
frac_preds_one
.name(name.str())
.desc(description.str())
;
frac_preds_one = 100 * record_one / total_preds;
description.str("");
name.str("");
//
// Count the number of correct predictions
//
name << p_name << ":correct_preds" ;
total_correct
.name(name.str())
.desc("total number of correct predictions made")
;
total_correct = correct_pred_one + correct_pred_zero;
name.str("");
//
// Prediction accuracy rates
//
name << p_name << ":pred_rate";
total_accuracy
.name(name.str())
.desc("fraction of all preds that were correct")
;
total_accuracy = 100 * total_correct / total_preds;
name.str("");
name << p_name << ":" << zero_name << ":pred_rate" ;
description << "fraction of "<< zero_name <<" preds that were correct";
zero_accuracy
.name(name.str())
.desc(description.str())
;
zero_accuracy = 100 * correct_pred_zero / pred_zero;
description.str("");
name.str("");
name << p_name << ":" << one_name << ":pred_rate" ;
description << "fraction of "<< one_name <<" preds that were correct";
one_accuracy
.name(name.str())
.desc(description.str())
;
one_accuracy = 100 * correct_pred_one / pred_one;
description.str("");
name.str("");
//
// Coverage
//
name << p_name << ":" << zero_name << ":coverage";
description << "fraction of " << zero_name
<< "s that were predicted correctly";
zero_coverage
.name(name.str())
.desc(description.str())
;
zero_coverage = 100 * correct_pred_zero / record_zero;
description.str("");
name.str("");
name << p_name << ":" << one_name << ":coverage";
description << "fraction of " << one_name
<< "s that were predicted correctly";
one_coverage
.name(name.str())
.desc(description.str())
;
one_coverage = 100 * correct_pred_one / record_one;
description.str("");
name.str("");
//
// Local & Global predictor stats
//
if (reg_individual_stats) {
local->regFormulas();
global->regFormulas();
}
}