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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"
#include "harness/conversions.h"
#include "harness/typeWrappers.h"
static const char *lbar_source =
"__kernel void test_lbar(const __global Type *in, __global int2 *xy, "
"__global Type *out)\n"
"{\n"
" __local int tmp[200];\n"
" int gid = get_global_id(0);\n"
" int nid = get_sub_group_size();\n"
" int lid = get_sub_group_local_id();\n"
" xy[gid].x = lid;\n"
" xy[gid].y = get_sub_group_id();\n"
" if (get_sub_group_id() == 0) {\n"
" tmp[lid] = in[gid];\n"
" sub_group_barrier(CLK_LOCAL_MEM_FENCE);\n"
" out[gid] = tmp[nid-1-lid];\n"
" } else {\n"
" out[gid] = -in[gid];\n"
" }\n"
"}\n";
static const char *gbar_source =
"__kernel void test_gbar(const __global Type *in, __global int2 *xy, "
"__global Type *out, __global Type *tmp)\n"
"{\n"
" int gid = get_global_id(0);\n"
" int nid = get_sub_group_size();\n"
" int lid = get_sub_group_local_id();\n"
" int tof = get_group_id(0)*get_max_sub_group_size();\n"
" xy[gid].x = lid;\n"
" xy[gid].y = get_sub_group_id();\n"
" if (get_sub_group_id() == 0) {\n"
" tmp[tof+lid] = in[gid];\n"
" sub_group_barrier(CLK_GLOBAL_MEM_FENCE);\n"
" out[gid] = tmp[tof+nid-1-lid];\n"
" } else {\n"
" out[gid] = -in[gid];\n"
" }\n"
"}\n";
// barrier test functions
template <int Which> struct BAR
{
static void log_test(const WorkGroupParams &test_params,
const char *extra_text)
{
if (Which == 0)
log_info(" sub_group_barrier(CLK_LOCAL_MEM_FENCE)...%s\n",
extra_text);
else
log_info(" sub_group_barrier(CLK_GLOBAL_MEM_FENCE)...%s\n",
extra_text);
}
static void gen(cl_int *x, cl_int *t, cl_int *m,
const WorkGroupParams &test_params)
{
int i, ii, j, k, n;
int nw = test_params.local_workgroup_size;
int ns = test_params.subgroup_size;
int ng = test_params.global_workgroup_size;
int nj = (nw + ns - 1) / ns;
ng = ng / nw;
ii = 0;
for (k = 0; k < ng; ++k)
{
for (j = 0; j < nj; ++j)
{
ii = j * ns;
n = ii + ns > nw ? nw - ii : ns;
for (i = 0; i < n; ++i) t[ii + i] = genrand_int32(gMTdata);
}
// Now map into work group using map from device
for (j = 0; j < nw; ++j)
{
x[j] = t[j];
}
x += nw;
m += 2 * nw;
}
}
static test_status chk(cl_int *x, cl_int *y, cl_int *mx, cl_int *my,
cl_int *m, const WorkGroupParams &test_params)
{
int ii, i, j, k, n;
int nw = test_params.local_workgroup_size;
int ns = test_params.subgroup_size;
int ng = test_params.global_workgroup_size;
int nj = (nw + ns - 1) / ns;
ng = ng / nw;
cl_int tr, rr;
for (k = 0; k < ng; ++k)
{
// Map to array indexed to array indexed by local ID and sub group
for (j = 0; j < nw; ++j)
{
mx[j] = x[j];
my[j] = y[j];
}
for (j = 0; j < nj; ++j)
{
ii = j * ns;
n = ii + ns > nw ? nw - ii : ns;
for (i = 0; i < n; ++i)
{
tr = j == 0 ? mx[ii + n - 1 - i] : -mx[ii + i];
rr = my[ii + i];
if (tr != rr)
{
log_error("ERROR: sub_group_barrier mismatch for local "
"id %d in sub group %d in group %d expected "
"%d got %d\n",
i, j, k, tr, rr);
return TEST_FAIL;
}
}
}
x += nw;
y += nw;
m += 2 * nw;
}
return TEST_PASS;
}
};
// Entry point from main
int test_barrier_functions(cl_device_id device, cl_context context,
cl_command_queue queue, int num_elements,
bool useCoreSubgroups)
{
int error = TEST_PASS;
// Adjust these individually below if desired/needed
constexpr size_t global_work_size = 2000;
constexpr size_t local_work_size = 200;
WorkGroupParams test_params(global_work_size, local_work_size);
test_params.use_core_subgroups = useCoreSubgroups;
error = test<cl_int, BAR<0>>::run(device, context, queue, num_elements,
"test_lbar", lbar_source, test_params);
error |= test<cl_int, BAR<1>, global_work_size>::run(
device, context, queue, num_elements, "test_gbar", gbar_source,
test_params);
return error;
}
int test_barrier_functions_core(cl_device_id device, cl_context context,
cl_command_queue queue, int num_elements)
{
return test_barrier_functions(device, context, queue, num_elements, true);
}
int test_barrier_functions_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_barrier_functions(device, context, queue, num_elements, false);
}
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