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Add parse arguments code

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This commit is contained in:
Tom Deakin 2016-04-29 18:45:57 +01:00
parent 2cb4fe74b1
commit 72ddd05f61
1 changed files with 50 additions and 5 deletions
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55
src/main.cpp
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@ -19,9 +19,10 @@
#endif
const unsigned int ARRAY_SIZE = 52428800;
const unsigned int ntimes = 10;
unsigned int ARRAY_SIZE = 52428800;
unsigned int num_times = 10;
unsigned int deviceIndex = 0;
bool use_float = false;
template <typename T>
@ -74,7 +75,7 @@ void run()
std::chrono::high_resolution_clock::time_point t1, t2;
// Main loop
for (unsigned int k = 0; k < ntimes; k++)
for (unsigned int k = 0; k < num_times; k++)
{
// Execute Copy
t1 = std::chrono::high_resolution_clock::now();
@ -104,7 +105,7 @@ void run()
// Check solutions
stream->read_arrays(a, b, c);
check_solution<T>(ntimes, a, b, c);
check_solution<T>(num_times, a, b, c);
// Display timing results
std::cout
@ -130,7 +131,7 @@ void run()
auto minmax = std::minmax_element(timings[i].begin()+1, timings[i].end());
// Calculate average; ignore the first result
double average = std::accumulate(timings[i].begin()+1, timings[i].end(), 0.0) / (double)(ntimes - 1);
double average = std::accumulate(timings[i].begin()+1, timings[i].end(), 0.0) / (double)(num_times - 1);
// Display results
std::cout
@ -216,6 +217,50 @@ void parseArguments(int argc, char *argv[])
exit(EXIT_FAILURE);
}
}
else if (!std::string("--arraysize").compare(argv[i]) ||
!std::string("-s").compare(argv[i]))
{
if (++i >= argc || !parseUInt(argv[i], &ARRAY_SIZE))
{
std::cerr << "Invalid array size." << std::endl;
exit(EXIT_FAILURE);
}
}
else if (!std::string("--numtimes").compare(argv[i]) ||
!std::string("-n").compare(argv[i]))
{
if (++i >= argc || !parseUInt(argv[i], &num_times))
{
std::cerr << "Invalid number of times." << std::endl;
exit(EXIT_FAILURE);
}
}
else if (!std::string("--float").compare(argv[i]))
{
use_float = true;
std::cout << "Warning: If number of iterations set >= 8, expect rounding errors with single precision" << std::endl;
}
else if (!std::string("--help").compare(argv[i]) ||
!std::string("-h").compare(argv[i]))
{
std::cout << std::endl;
std::cout << "Usage: " << argv[0] << " [OPTIONS]" << std::endl << std::endl;
std::cout << "Options:" << std::endl;
std::cout << " -h --help Print the message" << std::endl;
std::cout << " --list List available devices" << std::endl;
std::cout << " --device INDEX Select device at INDEX" << std::endl;
std::cout << " -s --arraysize SIZE Use SIZE elements in the array" << std::endl;
std::cout << " -n --numtimes NUM Run the test NUM times (NUM >= 2)" << std::endl;
std::cout << " --float Use floats (rather than doubles)" << std::endl;
std::cout << std::endl;
exit(EXIT_SUCCESS);
}
else
{
std::cerr << "Unrecognized argument '" << argv[i] << "' (try '--help')"
<< std::endl;
exit(EXIT_FAILURE);
}
}
}