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bandwidth.c
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bandwidth.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <math.h>
/* OpenCL */
#ifdef __APPLE__
#include <OpenCL/opencl.h>
#else
//#define CL_USE_DEPRECATED_OPENCL_1_2_APIS
#include <CL/cl.h>
#endif
///////////////////////// == CHANGE VAR TYPE == ///////////////////////
// CPU ELEMENT TYPE: int, float, __fp16, double
#define ELEM_TYPE float
#define ELEM_TYPE_STR "float"
// OPENCL ELEMENT TYPE: int, intN, float, floatN, double, doubleN, cl_half, cl_halfN
#define CL_ELEM_TYPE cl_float //cl_float2, note: cl_half is allowed in host, cl_halfN not
// CL_ELEM_TYPE_STR: macro define for CL kernel
#define CL_ELEM_TYPE_STR "float" // float2
#define CL_OTHER_MACRO ""//" -cl-mad-enable"
///////////////////////////////////////////////////////////////////////
#define ELEM_RAND_RANGE (100)
#define ELEM_INIT_VALUE (1)
#define PRINT_LINE(title) printf("============== %s ==============\n", title)
#define BANDWIDTH_CPU_ENABLE
#define BANDWIDTH_GPU_ENABLE
// OpenCL Device Type: 'CL_GPU' or "CL_CPU"
#define OPENCL_DEVICE_TYPE "CL_GPU"
#define LOCAL_WORK_SIZE_POINTER NULL
#define KERNEL_FILE_AND_FUNC_MAX_LEN (100)
#define NOT_PRINT_FLAG
#include "../common/matop.h"
int main(int argc, char * argv[]) {
struct timeval start, end;
double duration, gflops, gbps;
int
heightA,
widthA,
len,
ndim = 3,
run_num;
size_t
data_size,
global_work_size[3] = {1,1,1};
ELEM_TYPE
*a_h = NULL,
*a_from_h = NULL,
*a_from_d = NULL;
printf(">>> [USAGE] %s HEGHTA WIDTHA KERNEL_FILE_PATH KERNEL_FUNC_NAME LOOP_EXECUTION_TIMES GLOBAL_WORK_SIZE[0] GLOBAL_WORK_SIZE[1] GLOBAL_WORK_SIZE[2]\n\n", argv[0]);
PRINT_LINE("INIT");
printf(">>> [INFO] ELEM_TYPE_STR: %s, sizeof(ELEM_TYPE): %d\n", ELEM_TYPE_STR, (int)sizeof(ELEM_TYPE));
printf(">>> [INFO] CL_ELEM_TYPE_STR: %s, sizeof(CL_ELEM_TYPE): %d\n", CL_ELEM_TYPE_STR, (int)sizeof(CL_ELEM_TYPE));
if (sizeof(ELEM_TYPE) != sizeof(CL_ELEM_TYPE)) {
printf(">>> [WARN] ELEM_TYPE(%s) differs from CL_ELEM_TYPE(%s)\n", ELEM_TYPE_STR, CL_ELEM_TYPE_STR);
}
char
program_file[KERNEL_FILE_AND_FUNC_MAX_LEN] = "",
kernel_func[KERNEL_FILE_AND_FUNC_MAX_LEN] = "",
cl_program_build_options[KERNEL_FILE_AND_FUNC_MAX_LEN] = "-D ";
strcat(cl_program_build_options, "CL_ELEM_TYPE=");
strcat(cl_program_build_options, CL_ELEM_TYPE_STR);
strcat(cl_program_build_options, CL_OTHER_MACRO);
if (strstr(ELEM_TYPE_STR, "short")!=NULL) {
strcat(cl_program_build_options, " -D CL_INPUT_TYPE=short");
}
else if (strstr(ELEM_TYPE_STR, "int")!=NULL) {
strcat(cl_program_build_options, " -D CL_INPUT_TYPE=int");
}
else if (strstr(ELEM_TYPE_STR, "float")!=NULL) {
strcat(cl_program_build_options, " -D CL_INPUT_TYPE=float");
}
else if (strstr(ELEM_TYPE_STR, "double")!=NULL) {
strcat(cl_program_build_options, " -D CL_INPUT_TYPE=double");
}
else if (strstr(ELEM_TYPE_STR, "fp16")!=NULL) {
strcat(cl_program_build_options, " -D CL_INPUT_TYPE=half");
}
else {
printf(">>> [ERROR] CL_INPUT_TYPE defination is wrong.\n");
exit(-1);
}
printf(">>> [INFO] cl_program_build_options: %s\n", cl_program_build_options);
if (argc == 9) {
/*********************************
1. argc[1] heightA
2. argc[2] widthA
3. argc[3] kernel_file_path
4. argc[4] kernel_func_name
5. argc[5] run_num
6. argc[6] global_work_size[0]
7. argc[7] global_work_size[1]
8. argc[8] global_work_size[2]
*********************************/
heightA = atoi( argv[1] );
widthA = atoi( argv[2] );
strcpy(program_file, argv[3]);
strcpy(kernel_func, argv[4]);
//printf("program_file:%s\n", program_file);
//printf("argv[3]:%s\n\n", argv[3]);
//printf("kernel_func:%s\n", kernel_func);
//printf("argv[4]:%s\n", argv[4]);
run_num = atoi( argv[5] );
global_work_size[0] = atoi( argv[6] );
global_work_size[1] = atoi( argv[7] );
global_work_size[2] = atoi( argv[8] );
}
else {
printf(">>> [ERROR] please input args\n");
exit(-1);
}
len = heightA * widthA;
data_size = len * sizeof( ELEM_TYPE );
a_h = (ELEM_TYPE *) malloc (data_size);
a_from_h = (ELEM_TYPE *) malloc (data_size);
a_from_d = (ELEM_TYPE *) malloc (data_size);
printf(">>> [INFO] len: %d, data_size: %d, a_h: %p a_h+1: %p \n\n", len, (int)data_size, a_h, (a_h+1));
rand_mat(a_h, len, ELEM_RAND_RANGE);
init_mat(a_from_h, len, ELEM_INIT_VALUE);
init_mat(a_from_d, len, ELEM_INIT_VALUE);
#ifndef NOT_PRINT_FLAG
PRINT_LINE("INIT");
printf("a_h:\n");
print_mat(a_h, heightA, widthA);
printf("a_from_h:\n");
print_mat(a_from_h, heightA, widthA);
printf("a_from_d:\n");
print_mat(a_from_d, heightA, widthA);
#endif
PRINT_LINE("CPU RESULT");
/* cpu copy */
#ifdef BANDWIDTH_CPU_ENABLE
printf(">>> [INFO] %d times %s starting...\n", run_num, "CPU");
gettimeofday(&start, NULL);
for (int ridx = 0; ridx < run_num; ridx++) {
copy_mat(a_h, a_from_h, len);
}
gettimeofday(&end, NULL);
duration = ((double)(end.tv_sec-start.tv_sec) +
(double)(end.tv_usec-start.tv_usec)/1000000) / (double)run_num;
gflops = 2.0 * heightA * widthA;
gflops = gflops / duration * 1.0e-6;
gbps = 2.0 * heightA * widthA * sizeof(ELEM_TYPE) / (1024*1024*1024) / duration;
printf(">>> [INFO] %s %d x %d %2.6lf s %2.6lf MFLOPS\n\n", "CPU", heightA, widthA, duration, gflops);
printf(">>> [INFO] bandwidth: %.2f GB/s\n", gbps);
#endif
equal_vec(a_h, a_from_h, len);
#ifndef NOT_PRINT_FLAG
printf("a_from_h:\n");
print_mat(a_from_h, heightA, widthA);
#endif
#ifdef BANDWIDTH_GPU_ENABLE
cl_mem a_h_buff, a_from_d_buff;
a_h_buff = a_from_d_buff = NULL;
cl_platform_id platform_id = NULL;
cl_uint ret_num_platforms;
cl_device_id device_id = NULL;
cl_uint ret_num_devices;
cl_context context = NULL;
cl_kernel kernel = NULL;
cl_program program = NULL;
cl_command_queue command_queue = NULL;
cl_event event = NULL;
cl_int ret;
/* Load the source code and containing the kernel */
FILE *program_handle;
char *program_buffer;
size_t program_size;
PRINT_LINE("GPU RESULT");
//ret = system("cat /sys/class/misc/mali0/device/gpuinfo");
FILE *fp; char buffer[80];
fp = popen("cat /sys/class/misc/mali0/device/gpuinfo", "r");
char *ret_ = fgets(buffer, sizeof(buffer), fp);
printf(">>> [INFO] Device name: %s", buffer);
pclose(fp);
printf(">>> [INFO] program_file: %s\n", program_file);
printf(">>> [INFO] kernel_func: %s\n", kernel_func);
program_handle = fopen(program_file, "r");
if (program_handle == NULL) {
fprintf(stderr, ">>> [ERROR] failed to load kernel.\n");
exit(-1);
}
fseek(program_handle, 0, SEEK_END);
program_size = ftell(program_handle);
rewind(program_handle);
program_buffer = (char *) malloc (program_size + 1);
program_buffer[program_size] = '\0';
size_t num_read = fread(program_buffer, sizeof(char), program_size, program_handle);
if (num_read == 0)
printf(">>> [ERROR] failed to read program file.\n");
fclose(program_handle);
// Platform
ret = clGetPlatformIDs(1, &platform_id, &ret_num_platforms);
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to get platform ID.%d\n", (int)ret);
goto error;
}
// Device
if (strcmp(OPENCL_DEVICE_TYPE, "CL_GPU") == 0) {
ret = clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_GPU, 1, &device_id, NULL);
}
else if (strcmp(OPENCL_DEVICE_TYPE, "CL_CPU") == 0) {
ret = clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_CPU, 1, &device_id, NULL);
}
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to get device ID.%d\n", (int)ret);
goto error;
}
// Context
context = clCreateContext(NULL, 1, &device_id, NULL, NULL, &ret);
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to create OpenCL context.%d\n", (int)ret);
goto error;
}
// Command queue
command_queue = clCreateCommandQueue(context, device_id, 0, &ret);
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to create command queue.%d\n", (int)ret);
goto error;
}
// Memory buffer
a_h_buff = clCreateBuffer(context, CL_MEM_READ_ONLY, data_size, NULL, &ret);
a_from_d_buff = clCreateBuffer(context, CL_MEM_WRITE_ONLY, data_size, NULL, &ret);
ret = clEnqueueWriteBuffer(command_queue, a_h_buff, CL_TRUE, 0, data_size, (void *)a_h, 0, NULL, NULL);
ret |= clEnqueueWriteBuffer(command_queue, a_from_d_buff, CL_TRUE, 0, data_size, (void *)a_from_d, 0, NULL, NULL);
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to copy data from host to device.\n");
goto error;
}
// Create kernel program from source
program = clCreateProgramWithSource(context, 1, (const char **)&program_buffer,
(const size_t *)&program_size, &ret);
//printf("%s\n", program_buffer);
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to create OpenCL program from source.%d\n", (int)ret);
goto error;
}
// Build kernel program
ret = clBuildProgram(program, 1, &device_id, cl_program_build_options, NULL, NULL);
if (ret != CL_SUCCESS) {
fprintf(stderr, ">>> [ERROR] failed to build program.%d\n", (int)ret);
char build_log[16348];
clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, sizeof(build_log), build_log, NULL);
printf(">>> [ERROR] Error in kernel: %s\n", build_log);
goto error;
}
// Create OpenCL kernel
kernel = clCreateKernel(program, kernel_func, &ret);
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to create kernel.%d\n", (int)ret);
goto error;
}
ret = clSetKernelArg(kernel, 0, sizeof(cl_int), (void *) &heightA);
ret |= clSetKernelArg(kernel, 1, sizeof(cl_int), (void *) &widthA);
ret |= clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *) &a_h_buff);
ret |= clSetKernelArg(kernel, 3, sizeof(cl_mem), (void *) &a_from_d_buff);
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to set kernel arguments.%d\n", (int)ret);
goto error;
}
printf(">>> [INFO] global_work_size[%d]: { %d, %d, %d }\n", ndim, (int)global_work_size[0], (int)global_work_size[1], (int)global_work_size[2]);
int global_size = (int) global_work_size[0] * (int) global_work_size[1] * (int) global_work_size[2];
int task_size = heightA * widthA;
if (global_size < task_size) {
printf(">>> [WARN] global work size (%d) is smaller than task size (%d).\n\n", global_size, task_size);
}
/* gpu copy */
printf(">>> [INFO] %d times %s.%s starting...\n", run_num, program_file, kernel_func);
double sum_duration = 0.0;
for (int ridx = 0; ridx < (run_num+1); ridx++) {
gettimeofday(&start, NULL);
// Run kernel
clEnqueueNDRangeKernel(command_queue, kernel, ndim, NULL, global_work_size,
LOCAL_WORK_SIZE_POINTER, 0, NULL, &event);
clFinish(command_queue);
gettimeofday(&end, NULL);
duration = ((double)(end.tv_sec-start.tv_sec) +
(double)(end.tv_usec-start.tv_usec)/1000000);
if (ridx == 0) {
printf(">>> [INFO] skip first time.\n");
continue;
}
sum_duration += duration;
}
gflops = 2.0 * heightA * widthA;
gflops = gflops / duration * 1.0e-6;
duration = sum_duration / (double)run_num;
gbps = 2.0 * heightA * widthA * sizeof(ELEM_TYPE) / (1024*1024*1024) / duration;
printf(">>> [INFO] %s %d x %d %2.6lf s %2.6lf MFLOPS %s\n\n", OPENCL_DEVICE_TYPE, heightA, widthA, duration, gflops, program_file);
printf(">>> [INFO] bandwidth: %.2f GB/s\n", gbps);
// Copy the output result from device memory
ret = clEnqueueReadBuffer(command_queue, a_from_d_buff, CL_TRUE, 0, data_size, (void *)a_from_d, 0, NULL, NULL);
if (ret != CL_SUCCESS) {
printf(">>> [ERROR] failed to copy data from device to host.%d\n", (int)ret);
goto error;
}
equal_vec(a_h, a_from_d, len);
#ifndef NOT_PRINT_FLAG
printf("a_from_d:\n");
print_mat(a_from_d, heightA, widthA);
#endif
printf("\n\n");
error:
clFlush(command_queue);
clFinish(command_queue);
clReleaseKernel(kernel);
clReleaseProgram(program);
clReleaseMemObject(a_h_buff);
clReleaseMemObject(a_from_d_buff);
clReleaseCommandQueue(command_queue);
clReleaseContext(context);
clReleaseProgram(program);
clReleaseKernel(kernel);
free(program_buffer);
#endif
free(a_h);
free(a_from_h);
free(a_from_d);
return 1;
}