a74e7cee4c
sizes array was fixed at compile time not run time. Moved the declaration to the correct scope.
465 lines
14 KiB
C++
465 lines
14 KiB
C++
|
|
#include <iostream>
|
|
#include <fstream>
|
|
#include <vector>
|
|
#include <chrono>
|
|
#include <cfloat>
|
|
#include <iomanip>
|
|
#include <cmath>
|
|
|
|
#define __CL_ENABLE_EXCEPTIONS
|
|
#include "cl.hpp"
|
|
|
|
unsigned int ARRAY_SIZE = 50000000;
|
|
unsigned int NTIMES = 10;
|
|
|
|
size_t DATATYPE_SIZE = sizeof(double);
|
|
bool useFloat = false;
|
|
|
|
#define MIN(a,b) ((a) < (b)) ? (a) : (b)
|
|
#define MAX(a,b) ((a) > (b)) ? (a) : (b)
|
|
|
|
#define VERSION_STRING "0.0"
|
|
|
|
void parseArguments(int argc, char *argv[]);
|
|
std::string getDeviceName(const cl::Device& device);
|
|
unsigned getDeviceList(std::vector<cl::Device>& devices);
|
|
|
|
struct badfile : public std::exception
|
|
{
|
|
virtual const char * what () const throw ()
|
|
{
|
|
return "Cannot open kernel file";
|
|
}
|
|
};
|
|
|
|
struct invaliddevice : public std::exception
|
|
{
|
|
virtual const char * what () const throw ()
|
|
{
|
|
return "Chosen device index is invalid";
|
|
}
|
|
};
|
|
|
|
struct badntimes : public std::exception
|
|
{
|
|
virtual const char * what () const throw ()
|
|
{
|
|
return "Chosen number of times is invalid, must be >= 2";
|
|
}
|
|
};
|
|
|
|
|
|
void check_solution(void* a, void* b, void* c)
|
|
{
|
|
// Generate correct solution
|
|
double golda = 1.0;
|
|
double goldb = 2.0;
|
|
double goldc = 0.0;
|
|
float goldaf = 1.0;
|
|
float goldbf = 2.0;
|
|
float goldcf = 0.0;
|
|
|
|
const double scalar = 3.0;
|
|
const float scalarf = 3.0;
|
|
|
|
for (unsigned int i = 0; i < NTIMES; i++)
|
|
{
|
|
// Double
|
|
goldc = golda;
|
|
goldb = scalar * goldc;
|
|
goldc = golda + goldb;
|
|
golda = goldb + scalar * goldc;
|
|
// Float
|
|
goldcf = goldaf;
|
|
goldbf = scalarf * goldcf;
|
|
goldcf = goldaf + goldbf;
|
|
goldaf = goldbf + scalarf * goldcf;
|
|
}
|
|
|
|
// Calculate average error
|
|
double erra = 0.0;
|
|
double errb = 0.0;
|
|
double errc = 0.0;
|
|
for (unsigned int i = 0; i < ARRAY_SIZE; i++)
|
|
{
|
|
if (useFloat)
|
|
{
|
|
erra += fabsf(((float*)a)[i] - goldaf);
|
|
errb += fabsf(((float*)b)[i] - goldbf);
|
|
errc += fabsf(((float*)c)[i] - goldcf);
|
|
}
|
|
else
|
|
{
|
|
erra += fabs(((double*)a)[i] - (double)golda);
|
|
errb += fabs(((double*)b)[i] - (double)goldb);
|
|
errc += fabs(((double*)c)[i] - (double)goldc);
|
|
}
|
|
}
|
|
erra /= (double)ARRAY_SIZE;
|
|
errb /= (double)ARRAY_SIZE;
|
|
errc /= (double)ARRAY_SIZE;
|
|
|
|
double epsi;
|
|
if (useFloat) epsi = 1.0E-6;
|
|
else epsi = 1.0E-13;
|
|
|
|
if (erra > epsi)
|
|
std::cout
|
|
<< "Validation failed on a[]. Average error " << erra
|
|
<< std::endl;
|
|
if (errb > epsi)
|
|
std::cout
|
|
<< "Validation failed on b[]. Average error " << errb
|
|
<< std::endl;
|
|
if (errc > epsi)
|
|
std::cout
|
|
<< "Validation failed on c[]. Average error " << errc
|
|
<< std::endl;
|
|
}
|
|
|
|
cl_uint deviceIndex = 0;
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
|
|
// Print out run information
|
|
std::cout
|
|
<< "GPU-STREAM" << std::endl
|
|
<< "Version: " << VERSION_STRING << std::endl
|
|
<< "Implementation: OpenCL" << std::endl << std::endl;
|
|
|
|
try
|
|
{
|
|
parseArguments(argc, argv);
|
|
|
|
if (NTIMES < 2) throw badntimes();
|
|
|
|
// Open the Kernel source
|
|
std::ifstream in("ocl-stream-kernels.cl");
|
|
if (!in.is_open()) throw badfile();
|
|
std::string kernels(std::istreambuf_iterator<char>(in), (std::istreambuf_iterator<char>()));
|
|
|
|
// Setup OpenCL
|
|
|
|
// Get list of devices
|
|
std::vector<cl::Device> devices;
|
|
getDeviceList(devices);
|
|
|
|
// Check device index is in range
|
|
if (deviceIndex >= devices.size()) throw invaliddevice();
|
|
|
|
cl::Device device = devices[deviceIndex];
|
|
|
|
cl::Context context(device);
|
|
cl::CommandQueue queue(context);
|
|
cl::Program program(context, kernels);
|
|
|
|
// Print out device name
|
|
std::string name = getDeviceName(device);
|
|
std::cout << "Using OpenCL device " << name << std::endl;
|
|
|
|
try
|
|
{
|
|
std::string options = "";
|
|
if (useFloat)
|
|
options = "-DFLOAT";
|
|
program.build(options.c_str());
|
|
}
|
|
catch (cl::Error& e)
|
|
{
|
|
std::vector<cl::Device> devices = context.getInfo<CL_CONTEXT_DEVICES>();
|
|
std::string buildlog = program.getBuildInfo<CL_PROGRAM_BUILD_LOG>(devices[0]);
|
|
std::cerr
|
|
<< "Build error:"
|
|
<< buildlog
|
|
<< std::endl;
|
|
throw e;
|
|
}
|
|
|
|
cl::make_kernel<cl::Buffer, cl::Buffer> copy(program, "copy");
|
|
cl::make_kernel<cl::Buffer, cl::Buffer> mul(program, "mul");
|
|
cl::make_kernel<cl::Buffer, cl::Buffer, cl::Buffer> add(program, "add");
|
|
cl::make_kernel<cl::Buffer, cl::Buffer, cl::Buffer> triad(program, "triad");
|
|
|
|
// Create host vectors
|
|
void *h_a = malloc(ARRAY_SIZE * DATATYPE_SIZE);
|
|
void *h_b = malloc(ARRAY_SIZE * DATATYPE_SIZE);
|
|
void *h_c = malloc(ARRAY_SIZE * DATATYPE_SIZE);
|
|
|
|
// Initilise arrays
|
|
for (unsigned int i = 0; i < ARRAY_SIZE; i++)
|
|
{
|
|
if (useFloat)
|
|
{
|
|
((float*)h_a)[i] = 1.0;
|
|
((float*)h_b)[i] = 2.0;
|
|
((float*)h_c)[i] = 0.0;
|
|
}
|
|
else
|
|
{
|
|
((double*)h_a)[i] = 1.0;
|
|
((double*)h_b)[i] = 2.0;
|
|
((double*)h_c)[i] = 0.0;
|
|
}
|
|
}
|
|
|
|
// Create device buffers
|
|
cl::Buffer d_a(context, CL_MEM_READ_WRITE, DATATYPE_SIZE * ARRAY_SIZE);
|
|
cl::Buffer d_b(context, CL_MEM_READ_WRITE, DATATYPE_SIZE * ARRAY_SIZE);
|
|
cl::Buffer d_c(context, CL_MEM_READ_WRITE, DATATYPE_SIZE * ARRAY_SIZE);
|
|
|
|
// Copy host memory to device
|
|
queue.enqueueWriteBuffer(d_a, CL_FALSE, 0, ARRAY_SIZE*DATATYPE_SIZE, h_a);
|
|
queue.enqueueWriteBuffer(d_b, CL_FALSE, 0, ARRAY_SIZE*DATATYPE_SIZE, h_b);
|
|
queue.enqueueWriteBuffer(d_c, CL_FALSE, 0, ARRAY_SIZE*DATATYPE_SIZE, h_c);
|
|
|
|
// Make sure the copies are finished
|
|
queue.finish();
|
|
|
|
// List of times
|
|
std::vector< std::vector<double> > timings;
|
|
|
|
// Declare timers
|
|
std::chrono::high_resolution_clock::time_point t1, t2;
|
|
|
|
// Main loop
|
|
for (unsigned int k = 0; k < NTIMES; k++)
|
|
{
|
|
std::vector<double> times;
|
|
t1 = std::chrono::high_resolution_clock::now();
|
|
copy(
|
|
cl::EnqueueArgs(
|
|
queue,
|
|
cl::NDRange(ARRAY_SIZE)),
|
|
d_a, d_c);
|
|
queue.finish();
|
|
t2 = std::chrono::high_resolution_clock::now();
|
|
times.push_back(std::chrono::duration_cast<std::chrono::duration<double> >(t2 - t1).count());
|
|
|
|
|
|
t1 = std::chrono::high_resolution_clock::now();
|
|
mul(
|
|
cl::EnqueueArgs(
|
|
queue,
|
|
cl::NDRange(ARRAY_SIZE)),
|
|
d_b, d_c);
|
|
queue.finish();
|
|
t2 = std::chrono::high_resolution_clock::now();
|
|
times.push_back(std::chrono::duration_cast<std::chrono::duration<double> >(t2 - t1).count());
|
|
|
|
|
|
t1 = std::chrono::high_resolution_clock::now();
|
|
add(
|
|
cl::EnqueueArgs(
|
|
queue,
|
|
cl::NDRange(ARRAY_SIZE)),
|
|
d_a, d_b, d_c);
|
|
queue.finish();
|
|
t2 = std::chrono::high_resolution_clock::now();
|
|
times.push_back(std::chrono::duration_cast<std::chrono::duration<double> >(t2 - t1).count());
|
|
|
|
|
|
t1 = std::chrono::high_resolution_clock::now();
|
|
triad(
|
|
cl::EnqueueArgs(
|
|
queue,
|
|
cl::NDRange(ARRAY_SIZE)),
|
|
d_a, d_b, d_c);
|
|
queue.finish();
|
|
t2 = std::chrono::high_resolution_clock::now();
|
|
times.push_back(std::chrono::duration_cast<std::chrono::duration<double> >(t2 - t1).count());
|
|
|
|
timings.push_back(times);
|
|
|
|
}
|
|
|
|
// Check solutions
|
|
queue.enqueueReadBuffer(d_a, CL_FALSE, 0, ARRAY_SIZE*DATATYPE_SIZE, h_a);
|
|
queue.enqueueReadBuffer(d_b, CL_FALSE, 0, ARRAY_SIZE*DATATYPE_SIZE, h_b);
|
|
queue.enqueueReadBuffer(d_c, CL_FALSE, 0, ARRAY_SIZE*DATATYPE_SIZE, h_c);
|
|
queue.finish();
|
|
check_solution(h_a, h_b, h_c);
|
|
|
|
// Crunch results
|
|
size_t sizes[4] = {
|
|
2 * DATATYPE_SIZE * ARRAY_SIZE,
|
|
2 * DATATYPE_SIZE * ARRAY_SIZE,
|
|
3 * DATATYPE_SIZE * ARRAY_SIZE,
|
|
3 * DATATYPE_SIZE * ARRAY_SIZE
|
|
};
|
|
double min[4] = {DBL_MAX, DBL_MAX, DBL_MAX, DBL_MAX};
|
|
double max[4] = {0.0, 0.0, 0.0, 0.0};
|
|
double avg[4] = {0.0, 0.0, 0.0, 0.0};
|
|
// Ignore first result
|
|
for (unsigned int i = 1; i < NTIMES; i++)
|
|
{
|
|
for (int j = 0; j < 4; j++)
|
|
{
|
|
avg[j] += timings[i][j];
|
|
min[j] = MIN(min[j], timings[i][j]);
|
|
max[j] = MAX(max[j], timings[i][j]);
|
|
}
|
|
}
|
|
for (int j = 0; j < 4; j++)
|
|
avg[j] /= (double)(NTIMES-1);
|
|
|
|
// Display results
|
|
std::string labels[] = {"Copy", "Mul", "Add", "Triad"};
|
|
std::cout
|
|
<< std::left << std::setw(12) << "Function"
|
|
<< std::left << std::setw(12) << "MBytes/sec"
|
|
<< std::left << std::setw(12) << "Min (sec)"
|
|
<< std::left << std::setw(12) << "Max"
|
|
<< std::left << std::setw(12) << "Average"
|
|
<< std::endl;
|
|
for (int j = 0; j < 4; j++)
|
|
{
|
|
std::cout
|
|
<< std::left << std::setw(12) << labels[j]
|
|
<< std::left << std::setw(12) << 1.0E-06 * sizes[j]/min[j]
|
|
<< std::left << std::setw(12) << min[j]
|
|
<< std::left << std::setw(12) << max[j]
|
|
<< std::left << std::setw(12) << avg[j]
|
|
<< std::endl;
|
|
}
|
|
|
|
}
|
|
// Catch OpenCL Errors and display information
|
|
catch (cl::Error& e)
|
|
{
|
|
std::cerr
|
|
<< "Error: "
|
|
<< e.what()
|
|
<< "(" << e.err() << ")"
|
|
<< std::endl;
|
|
}
|
|
catch (std::exception& e)
|
|
{
|
|
std::cerr
|
|
<< "Error: "
|
|
<< e.what()
|
|
<< std::endl;
|
|
}
|
|
}
|
|
|
|
unsigned getDeviceList(std::vector<cl::Device>& devices)
|
|
{
|
|
// Get list of platforms
|
|
std::vector<cl::Platform> platforms;
|
|
cl::Platform::get(&platforms);
|
|
|
|
// Enumerate devices
|
|
for (unsigned int i = 0; i < platforms.size(); i++)
|
|
{
|
|
std::vector<cl::Device> plat_devices;
|
|
platforms[i].getDevices(CL_DEVICE_TYPE_ALL, &plat_devices);
|
|
devices.insert(devices.end(), plat_devices.begin(), plat_devices.end());
|
|
}
|
|
|
|
return devices.size();
|
|
}
|
|
|
|
std::string getDeviceName(const cl::Device& device)
|
|
{
|
|
std::string name;
|
|
cl_device_info info = CL_DEVICE_NAME;
|
|
|
|
// Special case for AMD
|
|
#ifdef CL_DEVICE_BOARD_NAME_AMD
|
|
device.getInfo(CL_DEVICE_VENDOR, &name);
|
|
if (strstr(name.c_str(), "Advanced Micro Devices"))
|
|
info = CL_DEVICE_BOARD_NAME_AMD;
|
|
#endif
|
|
|
|
device.getInfo(info, &name);
|
|
return name;
|
|
}
|
|
|
|
|
|
int parseUInt(const char *str, cl_uint *output)
|
|
{
|
|
char *next;
|
|
*output = strtoul(str, &next, 10);
|
|
return !strlen(next);
|
|
}
|
|
|
|
void parseArguments(int argc, char *argv[])
|
|
{
|
|
for (int i = 1; i < argc; i++)
|
|
{
|
|
if (!strcmp(argv[i], "--list"))
|
|
{
|
|
// Get list of devices
|
|
std::vector<cl::Device> devices;
|
|
getDeviceList(devices);
|
|
|
|
// Print device names
|
|
if (devices.size() == 0)
|
|
{
|
|
std::cout << "No devices found." << std::endl;
|
|
}
|
|
else
|
|
{
|
|
std::cout << std::endl;
|
|
std::cout << "Devices:" << std::endl;
|
|
for (unsigned i = 0; i < devices.size(); i++)
|
|
{
|
|
std::cout << i << ": " << getDeviceName(devices[i]) << std::endl;
|
|
}
|
|
std::cout << std::endl;
|
|
}
|
|
exit(0);
|
|
}
|
|
else if (!strcmp(argv[i], "--device"))
|
|
{
|
|
if (++i >= argc || !parseUInt(argv[i], &deviceIndex))
|
|
{
|
|
std::cout << "Invalid device index" << std::endl;
|
|
exit(1);
|
|
}
|
|
}
|
|
else if (!strcmp(argv[i], "--arraysize") || !strcmp(argv[i], "-s"))
|
|
{
|
|
if (++i >= argc || !parseUInt(argv[i], &ARRAY_SIZE))
|
|
{
|
|
std::cout << "Invalid array size" << std::endl;
|
|
exit(1);
|
|
}
|
|
}
|
|
else if (!strcmp(argv[i], "--numtimes") || !strcmp(argv[i], "-n"))
|
|
{
|
|
if (++i >= argc || !parseUInt(argv[i], &NTIMES))
|
|
{
|
|
std::cout << "Invalid number of times" << std::endl;
|
|
exit(1);
|
|
}
|
|
}
|
|
else if (!strcmp(argv[i], "--float"))
|
|
{
|
|
useFloat = true;
|
|
DATATYPE_SIZE = sizeof(float);
|
|
}
|
|
else if (!strcmp(argv[i], "--help") || !strcmp(argv[i], "-h"))
|
|
{
|
|
std::cout << std::endl;
|
|
std::cout << "Usage: ./gpu-stream-ocl [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(0);
|
|
}
|
|
else
|
|
{
|
|
std::cout << "Unrecognized argument '" << argv[i] << "' (try '--help')"
|
|
<< std::endl;
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|