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test
MoochoUtilities
TestStopWatchMain.cpp
Go to the documentation of this file.
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// @HEADER
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// ***********************************************************************
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//
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// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
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// Copyright (2003) Sandia Corporation
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//
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// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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// license for use of this work by or on behalf of the U.S. Government.
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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:
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//
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// 1. 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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//
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// 2. 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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//
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// 3. Neither the name of the Corporation nor the names of the
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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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//
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// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov)
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//
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// ***********************************************************************
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// @HEADER
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#include "
StopWatchPack_stopwatch.hpp
"
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#include "
Teuchos_GlobalMPISession.hpp
"
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#include "
Teuchos_StandardCatchMacros.hpp
"
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int
main
(
int
argc,
char
* argv[])
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{
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using
std::cout;
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using
std::endl;
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using
StopWatchPack::stopwatch
;
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bool
success =
true
;
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Teuchos::GlobalMPISession
mpiSession(&argc,&argv);
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try
{
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stopwatch timer;
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// Finding min resolution.
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double
min_resolution = 0.0;
// in seconds
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int
total_num_calls = 0;
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{
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cout <<
"\n*** Measuring miminum resolution.\n"
;
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timer.start();
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double
last_time = timer.read();
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const
int
max_num_samples = 20;
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int
num_samples = 0;
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int
num_calls = 0;
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while
( num_samples < max_num_samples ) {
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double
time = timer.read();
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num_calls++;
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if
( time - last_time > 0.0 ) {
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cout <<
"time_diff = "
<< time - last_time
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<<
", num_calls = "
<< num_calls << endl;
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min_resolution += time - last_time;
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++total_num_calls;
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last_time = time;
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num_calls = 0;
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num_samples++;
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}
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}
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min_resolution /= total_num_calls;
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}
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std::cerr <<
"Minimum stopwatch resolution = "
<< min_resolution <<
" sec\n"
;
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// Finding increasing resolution.
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{
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cout <<
"\n*** Measuring increasing resolution.\n"
;
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timer.start();
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double
start_time = timer.read(), last_time = start_time;
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const
int
max_num_samples = 20;
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int
num_samples = 0;
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int
num_calls = 0;
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while
( num_samples < max_num_samples ) {
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double
time = timer.read();
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num_calls++;
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if
( time - last_time > 0.0 ) {
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cout <<
"time = "
<< time - start_time
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<<
", num_calls = "
<< num_calls << endl;
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last_time = time;
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num_calls = 0;
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num_samples++;
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}
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}
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}
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}
// end try
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TEUCHOS_STANDARD_CATCH_STATEMENTS
(
true
, std::cerr, success);
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if
(success)
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cout <<
"\nEnd Result: TEST PASSED"
<< std::endl;
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return
0;
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}
Teuchos::GlobalMPISession
StopWatchPack::stopwatch
Simple stopwatch object.
Definition:
StopWatchPack_stopwatch.hpp:59
TEUCHOS_STANDARD_CATCH_STATEMENTS
#define TEUCHOS_STANDARD_CATCH_STATEMENTS(VERBOSE, ERR_STREAM, SUCCESS_FLAG)
StopWatchPack_stopwatch.hpp
Teuchos_StandardCatchMacros.hpp
main
int main(int argc, char *argv[])
Definition:
TestStopWatchMain.cpp:46
Teuchos_GlobalMPISession.hpp
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