func (this *event) GetProfilingInfo(param_name cl.CL_profiling_info) (interface{}, error) {
/* param data */
var param_value interface{}
var param_size cl.CL_size_t
var errCode cl.CL_int
/* Find size of param data */
if errCode = cl.CLGetEventProfilingInfo(this.event_id, param_name, 0, nil, ¶m_size); errCode != cl.CL_SUCCESS {
return nil, fmt.Errorf("GetProfilingInfo failure with errcode_ret %d: %s", errCode, cl.ERROR_CODES_STRINGS[-errCode])
}
/* Access param data */
if errCode = cl.CLGetEventProfilingInfo(this.event_id, param_name, param_size, ¶m_value, nil); errCode != cl.CL_SUCCESS {
return nil, fmt.Errorf("GetProfilingInfo failure with errcode_ret %d: %s", errCode, cl.ERROR_CODES_STRINGS[-errCode])
}
return param_value, nil
}
func main() {
/* OpenCL data structures */
var device []cl.CL_device_id
var context cl.CL_context
var queue cl.CL_command_queue
var program *cl.CL_program
var kernel cl.CL_kernel
var err cl.CL_int
/* Data and events */
var num_ints cl.CL_int
var num_items [1]cl.CL_size_t
var data [NUM_INTS]cl.CL_int
var data_buffer cl.CL_mem
var prof_event cl.CL_event
var total_time cl.CL_ulong
var time_start, time_end interface{}
/* Initialize data */
for i := 0; i < NUM_INTS; i++ {
data[i] = cl.CL_int(i)
}
/* Set number of data points and work-items */
num_ints = NUM_INTS
num_items[0] = NUM_ITEMS
/* Create a device and context */
device = utils.Create_device()
context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
if err < 0 {
println("Couldn't create a context")
return
}
/* Build the program and create a kernel */
program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
kernel = cl.CLCreateKernel(*program, KERNEL_FUNC, &err)
if err < 0 {
println("Couldn't create a kernel")
return
}
/* Create a buffer to hold data */
data_buffer = cl.CLCreateBuffer(context,
cl.CL_MEM_READ_WRITE|cl.CL_MEM_COPY_HOST_PTR,
cl.CL_size_t(unsafe.Sizeof(data[0]))*NUM_INTS, unsafe.Pointer(&data[0]), &err)
if err < 0 {
println("Couldn't create a buffer")
return
}
/* Create kernel argument */
err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(data_buffer)), unsafe.Pointer(&data_buffer))
if err < 0 {
println("Couldn't set a kernel argument")
return
}
cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(num_ints)), unsafe.Pointer(&num_ints))
/* Create a command queue */
queue = cl.CLCreateCommandQueue(context, device[0],
cl.CL_QUEUE_PROFILING_ENABLE, &err)
if err < 0 {
println("Couldn't create a command queue")
return
}
total_time = 0.0
for i := 0; i < NUM_ITERATIONS; i++ {
/* Enqueue kernel */
cl.CLEnqueueNDRangeKernel(queue, kernel, 1, nil, num_items[:],
nil, 0, nil, &prof_event)
if err < 0 {
println("Couldn't enqueue the kernel")
return
}
/* Finish processing the queue and get profiling information */
cl.CLFinish(queue)
cl.CLGetEventProfilingInfo(prof_event, cl.CL_PROFILING_COMMAND_START,
cl.CL_size_t(unsafe.Sizeof(total_time)), &time_start, nil)
cl.CLGetEventProfilingInfo(prof_event, cl.CL_PROFILING_COMMAND_END,
cl.CL_size_t(unsafe.Sizeof(total_time)), &time_end, nil)
total_time += time_end.(cl.CL_ulong) - time_start.(cl.CL_ulong)
}
fmt.Printf("Average time = %v\n", total_time/NUM_ITERATIONS)
/* Deallocate resources */
cl.CLReleaseEvent(prof_event)
cl.CLReleaseKernel(kernel)
cl.CLReleaseMemObject(data_buffer)
cl.CLReleaseCommandQueue(queue)
cl.CLReleaseProgram(*program)
cl.CLReleaseContext(context)
}
func main() {
/* OpenCL data structures */
var device []cl.CL_device_id
var context cl.CL_context
var queue cl.CL_command_queue
var program *cl.CL_program
var kernel cl.CL_kernel
var err cl.CL_int
/* Data and events */
var num_vectors cl.CL_int
var data [NUM_BYTES]byte
var data_buffer cl.CL_mem
var prof_event cl.CL_event
var total_time cl.CL_ulong
var time_start, time_end interface{}
var mapped_memory unsafe.Pointer
/* Create a device and context */
device = utils.Create_device()
context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
if err < 0 {
println("Couldn't create a context")
return
}
/* Build the program and create a kernel */
program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
kernel = cl.CLCreateKernel(*program, KERNEL_FUNC, &err)
if err < 0 {
println("Couldn't create a kernel")
return
}
/* Create a buffer to hold data */
data_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_WRITE_ONLY,
cl.CL_size_t(unsafe.Sizeof(data[0]))*NUM_BYTES, nil, &err)
if err < 0 {
println("Couldn't create a buffer")
return
}
/* Create kernel argument */
err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(data_buffer)), unsafe.Pointer(&data_buffer))
if err < 0 {
println("Couldn't set a kernel argument")
return
}
/* Tell kernel number of char16 vectors */
num_vectors = NUM_BYTES / 16
cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(num_vectors)), unsafe.Pointer(&num_vectors))
/* Create a command queue */
queue = cl.CLCreateCommandQueue(context, device[0],
cl.CL_QUEUE_PROFILING_ENABLE, &err)
if err < 0 {
println("Couldn't create a command queue")
return
}
total_time = 0.0
for i := 0; i < NUM_ITERATIONS; i++ {
/* Enqueue kernel */
err = cl.CLEnqueueTask(queue, kernel, 0, nil, nil)
if err < 0 {
println("Couldn't enqueue the kernel")
return
}
if PROFILE_READ == 1 {
/* Read the buffer */
err = cl.CLEnqueueReadBuffer(queue, data_buffer, cl.CL_TRUE, 0,
cl.CL_size_t(unsafe.Sizeof(data[0]))*NUM_BYTES, unsafe.Pointer(&data[0]), 0, nil, &prof_event)
if err < 0 {
println("Couldn't read the buffer")
return
}
} else {
/* Create memory map */
mapped_memory = cl.CLEnqueueMapBuffer(queue, data_buffer, cl.CL_TRUE,
cl.CL_MAP_READ, 0, cl.CL_size_t(unsafe.Sizeof(data[0]))*NUM_BYTES, 0, nil, &prof_event, &err)
if err < 0 {
println("Couldn't map the buffer to host memory")
return
}
}
/* Get profiling information */
cl.CLGetEventProfilingInfo(prof_event, cl.CL_PROFILING_COMMAND_START,
cl.CL_size_t(unsafe.Sizeof(total_time)), &time_start, nil)
cl.CLGetEventProfilingInfo(prof_event, cl.CL_PROFILING_COMMAND_END,
cl.CL_size_t(unsafe.Sizeof(total_time)), &time_end, nil)
total_time += time_end.(cl.CL_ulong) - time_start.(cl.CL_ulong)
if PROFILE_READ == 0 {
/* Unmap the buffer */
err = cl.CLEnqueueUnmapMemObject(queue, data_buffer, mapped_memory,
0, nil, nil)
if err < 0 {
println("Couldn't unmap the buffer")
return
}
}
}
if PROFILE_READ == 1 {
fmt.Printf("Average read time: %v\n", total_time/NUM_ITERATIONS)
} else {
fmt.Printf("Average map time: %v\n", total_time/NUM_ITERATIONS)
}
/* Deallocate resources */
cl.CLReleaseEvent(prof_event)
cl.CLReleaseMemObject(data_buffer)
cl.CLReleaseKernel(kernel)
cl.CLReleaseCommandQueue(queue)
cl.CLReleaseProgram(*program)
cl.CLReleaseContext(context)
}
