def test_GetKernelName_multiple_kernels():
"""Test that error is raised if multiple kernels are defined."""
with pytest.raises(args.MultipleKernelsError) as e_ctx:
args.GetKernelName("""
kernel void A() {}
kernel void B() {}
""")
assert 'Source contains more than one kernel definition' == str(
e_ctx.value)
def test_GetKernelName_hello_world_with_distractions():
"""A simple kernel test with unusual formatting."""
assert 'hello_world' == args.GetKernelName("""
int A() {}
kernel
void
hello_world(global int* a, const int c) {
a[0] = 0;
}
""")
def emit_c(src: str, inputs: np.array, gsize: typing.Optional[driver.NDRange],
lsize: typing.Optional[driver.NDRange], timeout: int = -1,
optimizations: bool = True, profiling: bool = False,
debug: bool = False, compile_only: bool = False,
create_kernel: bool = True) -> np.array:
"""
Generate C code to drive kernel.
Parameters
----------
env : OpenCLEnvironment
The OpenCL environment to run the kernel in.
src : str
The OpenCL kernel source.
inputs : np.array
The input data to the kernel.
optimizations : bool, optional
Whether to enable or disbale OpenCL compiler optimizations.
profiling : bool, optional
If true, print OpenCLevent times for data transfers and kernel
executions to stderr.
timeout : int, optional
Cancel execution if it has not completed after this many seconds.
A value <= 0 means never time out.
debug : bool, optional
If true, silence the OpenCL compiler.
compile_only: bool, optional
If true, generate code only to compile the kernel, not to generate
inputs and run it.
create_kernel: bool, optional
If 'compile_only' parameter is set, this parameter determines whether
to create a kernel object after compilation. This requires a kernel
name.
Returns
-------
str
Code which can be compiled using a C compiler to drive the kernel.
Raises
------
ValueError
If input types are incorrect.
TypeError
If an input is of an incorrect type.
LogicError
If the input types do not match OpenCL kernel types.
PorcelainError
If the OpenCL subprocess exits with non-zero return code.
RuntimeError
If OpenCL program fails to build or run.
Examples
--------
TODO
"""
src_string = escape_c_string(src)
optimizations_on_off = "on" if optimizations else "off"
clBuildProgram_opts = "NULL" if optimizations else '"-cl-opt-disable"'
c = f"""
/*
* Usage:
* gcc -std=c99 [-DPLATFORM_ID=<platform-id>] [-DDEVICE_ID=<device-id>] foo.c -lOpenCL
* ./a.out [-p <platform-id>] [-d <device-id>]
*
* Host code generated using cldrive <https://github.com/ChrisCummins/cldrive>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef __APPLE__
#include <OpenCL/opencl.h>
#else
#include <CL/cl.h>
#endif
const char *kernel_src = \\
{src_string};
#ifndef PLATFORM_ID
# define PLATFORM_ID 0
#endif
#ifndef DEVICE_ID
# define DEVICE_ID 0
#endif
#define True 1
#define False 0
#ifndef __APPLE__
typedef unsigned char bool;
#endif
typedef unsigned short ushort;
const char *clerror_string(cl_int err) {{
/* written by @Selmar http://stackoverflow.com/a/24336429 */
switch(err) {{
/* run-time and JIT compiler errors */
case 0: return "CL_SUCCESS";
case -1: return "CL_DEVICE_NOT_FOUND";
case -2: return "CL_DEVICE_NOT_AVAILABLE";
case -3: return "CL_COMPILER_NOT_AVAILABLE";
case -4: return "CL_MEM_OBJECT_ALLOCATION_FAILURE";
case -5: return "CL_OUT_OF_RESOURCES";
case -6: return "CL_OUT_OF_HOST_MEMORY";
case -7: return "CL_PROFILING_INFO_NOT_AVAILABLE";
case -8: return "CL_MEM_COPY_OVERLAP";
case -9: return "CL_IMAGE_FORMAT_MISMATCH";
case -10: return "CL_IMAGE_FORMAT_NOT_SUPPORTED";
case -11: return "CL_BUILD_PROGRAM_FAILURE";
case -12: return "CL_MAP_FAILURE";
case -13: return "CL_MISALIGNED_SUB_BUFFER_OFFSET";
case -14: return "CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST";
case -15: return "CL_COMPILE_PROGRAM_FAILURE";
case -16: return "CL_LINKER_NOT_AVAILABLE";
case -17: return "CL_LINK_PROGRAM_FAILURE";
case -18: return "CL_DEVICE_PARTITION_FAILED";
case -19: return "CL_KERNEL_ARG_INFO_NOT_AVAILABLE";
/* compile-time errors */
case -30: return "CL_INVALID_VALUE";
case -31: return "CL_INVALID_DEVICE_TYPE";
case -32: return "CL_INVALID_PLATFORM";
case -33: return "CL_INVALID_DEVICE";
case -34: return "CL_INVALID_CONTEXT";
case -35: return "CL_INVALID_QUEUE_PROPERTIES";
case -36: return "CL_INVALID_COMMAND_QUEUE";
case -37: return "CL_INVALID_HOST_PTR";
case -38: return "CL_INVALID_MEM_OBJECT";
case -39: return "CL_INVALID_IMAGE_FORMAT_DESCRIPTOR";
case -40: return "CL_INVALID_IMAGE_SIZE";
case -41: return "CL_INVALID_SAMPLER";
case -42: return "CL_INVALID_BINARY";
case -43: return "CL_INVALID_BUILD_OPTIONS";
case -44: return "CL_INVALID_PROGRAM";
case -45: return "CL_INVALID_PROGRAM_EXECUTABLE";
case -46: return "CL_INVALID_KERNEL_NAME";
case -47: return "CL_INVALID_KERNEL_DEFINITION";
case -48: return "CL_INVALID_KERNEL";
case -49: return "CL_INVALID_ARG_INDEX";
case -50: return "CL_INVALID_ARG_VALUE";
case -51: return "CL_INVALID_ARG_SIZE";
case -52: return "CL_INVALID_KERNEL_ARGS";
case -53: return "CL_INVALID_WORK_DIMENSION";
case -54: return "CL_INVALID_WORK_GROUP_SIZE";
case -55: return "CL_INVALID_WORK_ITEM_SIZE";
case -56: return "CL_INVALID_GLOBAL_OFFSET";
case -57: return "CL_INVALID_EVENT_WAIT_LIST";
case -58: return "CL_INVALID_EVENT";
case -59: return "CL_INVALID_OPERATION";
case -60: return "CL_INVALID_GL_OBJECT";
case -61: return "CL_INVALID_BUFFER_SIZE";
case -62: return "CL_INVALID_MIP_LEVEL";
case -63: return "CL_INVALID_GLOBAL_WORK_SIZE";
case -64: return "CL_INVALID_PROPERTY";
case -65: return "CL_INVALID_IMAGE_DESCRIPTOR";
case -66: return "CL_INVALID_COMPILER_OPTIONS";
case -67: return "CL_INVALID_LINKER_OPTIONS";
case -68: return "CL_INVALID_DEVICE_PARTITION_COUNT";
/* extension errors */
case -1000: return "CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR";
case -1001: return "CL_PLATFORM_NOT_FOUND_KHR";
case -1002: return "CL_INVALID_D3D10_DEVICE_KHR";
case -1003: return "CL_INVALID_D3D10_RESOURCE_KHR";
case -1004: return "CL_D3D10_RESOURCE_ALREADY_ACQUIRED_KHR";
case -1005: return "CL_D3D10_RESOURCE_NOT_ACQUIRED_KHR";
default: return "Unknown OpenCL error";
}}
}}
void check_error(const char* api_call, cl_int err) {{
if(err != CL_SUCCESS) {{
fprintf(stderr, "%s %s\\n", api_call, clerror_string(err));
exit(1);
}}
}}
int help(char **argv) {{
printf("Usage: %s [-p <platform-id>] [-d <device-id>]\\n", argv[0]);
return 2;
}}
int main(int argc, char** argv) {{
int err;
int platform_id = PLATFORM_ID;
int device_id = DEVICE_ID;
const char *filename = NULL;
for (int i = 1; i < argc; i++) {{
if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help"))
return help(argv);
else if (!strcmp(argv[i], "-f"))
filename = argv[++i];
else if (!strcmp(argv[i], "-p"))
platform_id = atoi(argv[++i]);
else if (!strcmp(argv[i], "-d"))
device_id = atoi(argv[++i]);
else
fprintf(stderr, "warning: unrecognized argument '%s'\\n", argv[i]);
}}
/* Optionally read kernel from file */
if (filename) {{
FILE *infile = fopen(filename, "rb");
if (infile == NULL) {{
fprintf(stderr, "fatal: Could not open '%s'\\n", filename);
return 3;
}}
fseek(infile, 0, SEEK_END);
long fsize = ftell(infile);
fseek(infile, 0, SEEK_SET);
char *buf = malloc(fsize + 1);
fread(buf, fsize, 1, infile);
fclose(infile);
buf[fsize] = 0;
fprintf(stderr, "read kernel from '%s'\\n", filename);
kernel_src = buf;
}}
cl_uint num_platforms;
cl_platform_id *platform_ids = (cl_platform_id*)malloc(sizeof(cl_platform_id) * (platform_id + 1));
err = clGetPlatformIDs(platform_id + 1, platform_ids, &num_platforms);
check_error("clGetPlatformIDs", err);
if (num_platforms <= platform_id) {{
fprintf(stderr, "Platform ID %d not found\\n", platform_id);
return 1;
}}
cl_platform_id cl_platform_id = platform_ids[platform_id];
char strbuf[256];
err = clGetPlatformInfo(cl_platform_id, CL_PLATFORM_NAME, sizeof(strbuf), strbuf, NULL);
check_error("clGetPlatformInfo", err);
fprintf(stderr, "[cldrive] Platform: %s\\n", strbuf);
cl_uint num_devices;
cl_device_id *device_ids = (cl_device_id*)malloc(sizeof(cl_device_id) * (device_id + 1));
err = clGetDeviceIDs(cl_platform_id, CL_DEVICE_TYPE_ALL, device_id + 1, device_ids, &num_devices);
check_error("clGetDeviceIDs", err);
if (num_devices <= device_id) {{
fprintf(stderr, "Device ID %d not found\\n", device_id);
return 1;
}}
cl_device_id cl_device_id = device_ids[device_id];
err = clGetDeviceInfo(cl_device_id, CL_DEVICE_NAME, sizeof(strbuf), strbuf, NULL);
check_error("clGetDeviceInfo", err);
fprintf(stderr, "[cldrive] Device: %s\\n", strbuf);
cl_context ctx = clCreateContext(NULL, 1, &cl_device_id, NULL, NULL, &err);
check_error("clCreateContext", err);
cl_command_queue queue = clCreateCommandQueue(ctx, cl_device_id, 0, &err);
check_error("clCreateCommandQueue", err);
fprintf(stderr, "[cldrive] OpenCL optimizations: {optimizations_on_off}\\n");
cl_program program = clCreateProgramWithSource(ctx, 1, (const char **) &kernel_src, NULL, &err);
check_error("clCreateProgramWithSource", err);
int build_err = clBuildProgram(program, 0, NULL, {clBuildProgram_opts}, NULL, NULL);
size_t log_size;
err = clGetProgramBuildInfo(program, cl_device_id, CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size);
check_error("clGetProgramBuildInfo", err);
if (log_size > 2) {{
char* log = (char*)malloc(sizeof(char) * (log_size + 1));
err = clGetProgramBuildInfo(program, cl_device_id, CL_PROGRAM_BUILD_LOG, log_size, log, NULL);
check_error("clGetProgramBuildInfo", err);
fprintf(stderr, "%s", log);
}}
check_error("clBuildProgram", build_err);
"""
if not compile_only or (compile_only and create_kernel):
kernel_name_ = _args.GetKernelName(src)
c += f"""
cl_kernel kernels[128];
cl_uint num_kernels;
err = clCreateKernelsInProgram(program, 128, kernels, &num_kernels);
check_error("clCreateKernelsInProgram", err);
if (num_kernels != 1) {{
fprintf(stderr, "fatal: require 1 kernel, got %u\\n", num_kernels);
return 3;
}}
cl_kernel kernel = kernels[0];
char kernel_name[128];
err = clGetKernelInfo(kernel, CL_KERNEL_FUNCTION_NAME, 128, kernel_name, NULL);
check_error("clGetKernelInfo", err);
if (!filename && strcmp(kernel_name, "{kernel_name_}"))
fprintf(stderr, "fatal: expected kernel name \\\"{kernel_name_}\\\", got \\\"%s\\\"\\n", kernel_name);
fprintf(stderr, "[cldrive] Kernel: \\\"%s\\\"\\n", kernel_name);
"""
if not compile_only:
args = _args.GetKernelArguments(src)
setup_block, teardown_block, print_block = gen_data_blocks(args, inputs)
c += f"""
{setup_block}
const size_t lsize[3] = {{ {lsize.x}, {lsize.y}, {lsize.z} }};
const size_t gsize[3] = {{ {gsize.x}, {gsize.y}, {gsize.z} }};
err = clEnqueueNDRangeKernel(queue, kernel, 3, NULL, gsize, lsize, 0, NULL, NULL);
check_error("clEnqueueNDRangeKernel", err);
{teardown_block}
err = clFinish(queue);
check_error("clFinish", err);
{print_block}
clReleaseProgram(program);
clReleaseKernel(kernel);
clReleaseCommandQueue(queue);
clReleaseContext(ctx);
"""
# close out main():
c += f"""
fprintf(stderr, "done.\\n");
return 0;
}}
"""
return c
def test_GetKernelName_syntax_error():
"""Test that error is raised if source contains syntax error."""
with pytest.raises(args.OpenCLValueError) as e_ctx:
args.GetKernelName('!@##syntax error!!!!1')
assert "Syntax error: ':1:1: before: !'" == str(e_ctx.value)
def test_GetKernelName_hello_world():
"""Test name extraction from a simple kernel."""
assert 'hello_world' == args.GetKernelName('kernel void hello_world() {}')
