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//
// Copyright (c) 2017 The Khronos Group Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "procs.h"
#include "subhelpers.h"
typedef struct
{
cl_uint maxSubGroupSize;
cl_uint numSubGroups;
} result_data;
int test_sub_group_info(cl_device_id device, cl_context context,
cl_command_queue queue, int num_elements,
bool useCoreSubgroups)
{
static const size_t gsize0 = 80;
int i, error;
size_t realSize;
size_t kernel_max_subgroup_size, kernel_subgroup_count;
size_t global[] = { gsize0, 14, 10 };
size_t local[] = { 0, 0, 0 };
result_data result[gsize0];
cl_uint max_dimensions;
error = clGetDeviceInfo(device, CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS,
sizeof(max_dimensions), &max_dimensions, NULL);
test_error(error,
"clGetDeviceInfo failed for CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS");
cl_platform_id platform;
clProgramWrapper program;
clKernelWrapper kernel;
clMemWrapper out;
std::stringstream kernel_sstr;
if (useCoreSubgroups)
{
kernel_sstr << "#pragma OPENCL EXTENSION cl_khr_subgroups : enable\n";
}
kernel_sstr
<< "\n"
"typedef struct {\n"
" uint maxSubGroupSize;\n"
" uint numSubGroups;\n"
"} result_data;\n"
"\n"
"__kernel void query_kernel( __global result_data *outData )\n"
"{\n"
" int gid = get_global_id( 0 );\n"
" outData[gid].maxSubGroupSize = get_max_sub_group_size();\n"
" outData[gid].numSubGroups = get_num_sub_groups();\n"
"}";
const std::string &kernel_str = kernel_sstr.str();
const char *kernel_src = kernel_str.c_str();
error = create_single_kernel_helper(context, &program, &kernel, 1,
&kernel_src, "query_kernel");
if (error != 0) return error;
// Determine some local dimensions to use for the test.
if (max_dimensions == 1)
{
error = get_max_common_work_group_size(context, kernel, global[0],
&local[0]);
test_error(error, "get_max_common_work_group_size failed");
}
else if (max_dimensions == 2)
{
error =
get_max_common_2D_work_group_size(context, kernel, global, local);
test_error(error, "get_max_common_2D_work_group_size failed");
}
else
{
error =
get_max_common_3D_work_group_size(context, kernel, global, local);
test_error(error, "get_max_common_3D_work_group_size failed");
}
error = clGetDeviceInfo(device, CL_DEVICE_PLATFORM, sizeof(platform),
(void *)&platform, NULL);
test_error(error, "clDeviceInfo failed for CL_DEVICE_PLATFORM");
subgroupsAPI subgroupsApiSet(platform, useCoreSubgroups);
clGetKernelSubGroupInfoKHR_fn clGetKernelSubGroupInfo_ptr =
subgroupsApiSet.clGetKernelSubGroupInfo_ptr();
if (clGetKernelSubGroupInfo_ptr == NULL)
{
log_error("ERROR: %s function not available\n",
subgroupsApiSet.clGetKernelSubGroupInfo_name);
return TEST_FAIL;
}
error = clGetKernelSubGroupInfo_ptr(
kernel, device, CL_KERNEL_MAX_SUB_GROUP_SIZE_FOR_NDRANGE, sizeof(local),
(void *)&local, sizeof(kernel_max_subgroup_size),
(void *)&kernel_max_subgroup_size, &realSize);
if (error != CL_SUCCESS)
{
log_error("ERROR: %s function error for "
"CL_KERNEL_MAX_SUB_GROUP_SIZE_FOR_NDRANGE\n",
subgroupsApiSet.clGetKernelSubGroupInfo_name);
return TEST_FAIL;
}
log_info(
"The CL_KERNEL_MAX_SUB_GROUP_SIZE_FOR_NDRANGE for the kernel is %d.\n",
(int)kernel_max_subgroup_size);
if (realSize != sizeof(kernel_max_subgroup_size))
{
log_error("ERROR: Returned size of max sub group size not valid! "
"(Expected %d, got %d)\n",
(int)sizeof(kernel_max_subgroup_size), (int)realSize);
return TEST_FAIL;
}
error = clGetKernelSubGroupInfo_ptr(
kernel, device, CL_KERNEL_SUB_GROUP_COUNT_FOR_NDRANGE, sizeof(local),
(void *)&local, sizeof(kernel_subgroup_count),
(void *)&kernel_subgroup_count, &realSize);
if (error != CL_SUCCESS)
{
log_error("ERROR: %s function error "
"for CL_KERNEL_SUB_GROUP_COUNT_FOR_NDRANGE\n",
subgroupsApiSet.clGetKernelSubGroupInfo_name);
return TEST_FAIL;
}
log_info(
"The CL_KERNEL_SUB_GROUP_COUNT_FOR_NDRANGE for the kernel is %d.\n",
(int)kernel_subgroup_count);
if (realSize != sizeof(kernel_subgroup_count))
{
log_error("ERROR: Returned size of sub group count not valid! "
"(Expected %d, got %d)\n",
(int)sizeof(kernel_subgroup_count), (int)realSize);
return TEST_FAIL;
}
// Verify that the kernel gets the same max_subgroup_size and subgroup_count
out = clCreateBuffer(context, CL_MEM_WRITE_ONLY, sizeof(result), NULL,
&error);
test_error(error, "clCreateBuffer failed");
error = clSetKernelArg(kernel, 0, sizeof(out), &out);
test_error(error, "clSetKernelArg failed");
error = clEnqueueNDRangeKernel(queue, kernel, max_dimensions, NULL, global,
local, 0, NULL, NULL);
test_error(error, "clEnqueueNDRangeKernel failed");
error = clEnqueueReadBuffer(queue, out, CL_FALSE, 0, sizeof(result),
&result, 0, NULL, NULL);
test_error(error, "clEnqueueReadBuffer failed");
error = clFinish(queue);
test_error(error, "clFinish failed");
for (i = 0; i < (int)gsize0; ++i)
{
if (result[i].maxSubGroupSize != (cl_uint)kernel_max_subgroup_size)
{
log_error("ERROR: get_max_subgroup_size() doesn't match result "
"from clGetKernelSubGroupInfoKHR, %u vs %u\n",
result[i].maxSubGroupSize,
(cl_uint)kernel_max_subgroup_size);
return -1;
}
if (result[i].numSubGroups != (cl_uint)kernel_subgroup_count)
{
log_error("ERROR: get_num_sub_groups() doesn't match result from "
"clGetKernelSubGroupInfoKHR, %u vs %u\n",
result[i].numSubGroups, (cl_uint)kernel_subgroup_count);
return -1;
}
}
return 0;
}
int test_sub_group_info_core(cl_device_id device, cl_context context,
cl_command_queue queue, int num_elements)
{
return test_sub_group_info(device, context, queue, num_elements, true);
}
int test_sub_group_info_ext(cl_device_id device, cl_context context,
cl_command_queue queue, int num_elements)
{
bool hasExtension = is_extension_available(device, "cl_khr_subgroups");
if (!hasExtension)
{
log_info(
"Device does not support 'cl_khr_subgroups'. Skipping the test.\n");
return TEST_SKIPPED_ITSELF;
}
return test_sub_group_info(device, context, queue, num_elements, false);
}
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