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/*
* Copyright (C) 2019-2022 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/helpers/basic_math.h"
#include "shared/source/helpers/constants.h"
#include "shared/source/helpers/kernel_helpers.h"
#include "shared/test/common/helpers/debug_manager_state_restore.h"
#include "shared/test/common/test_macros/test.h"
using namespace NEO;
struct KernelHelperMaxWorkGroupsTests : ::testing::Test {
uint32_t simd = 8;
uint32_t threadCount = 8 * 1024;
uint32_t dssCount = 16;
uint32_t availableSlm = 64 * KB;
uint32_t usedSlm = 0;
uint32_t maxBarrierCount = 32;
uint32_t numberOfBarriers = 0;
uint32_t workDim = 3;
size_t lws[3] = {10, 10, 10};
uint32_t getMaxWorkGroupCount() {
return KernelHelper::getMaxWorkGroupCount(simd, threadCount, dssCount, availableSlm, usedSlm,
maxBarrierCount, numberOfBarriers, workDim, lws);
}
};
TEST_F(KernelHelperMaxWorkGroupsTests, GivenNoBarriersOrSlmUsedWhenCalculatingMaxWorkGroupsCountThenResultIsCalculatedWithSimd) {
auto workGroupSize = lws[0] * lws[1] * lws[2];
auto expected = threadCount / Math::divideAndRoundUp(workGroupSize, simd);
EXPECT_EQ(expected, getMaxWorkGroupCount());
}
TEST_F(KernelHelperMaxWorkGroupsTests, GivenDebugFlagSetWhenGetMaxWorkGroupCountCalledThenReturnCorrectValue) {
DebugManagerStateRestore restore;
DebugManager.flags.OverrideMaxWorkGroupCount.set(123);
EXPECT_EQ(123u, getMaxWorkGroupCount());
}
TEST_F(KernelHelperMaxWorkGroupsTests, GivenBarriersWhenCalculatingMaxWorkGroupsCountThenResultIsCalculatedWithRegardToBarriersCount) {
numberOfBarriers = 16;
auto expected = dssCount * (maxBarrierCount / numberOfBarriers);
EXPECT_EQ(expected, getMaxWorkGroupCount());
}
TEST_F(KernelHelperMaxWorkGroupsTests, GivenUsedSlmSizeWhenCalculatingMaxWorkGroupsCountThenResultIsCalculatedWithRegardToUsedSlmSize) {
usedSlm = 4 * KB;
auto expected = availableSlm / usedSlm;
EXPECT_EQ(expected, getMaxWorkGroupCount());
}
TEST_F(KernelHelperMaxWorkGroupsTests, GivenVariousValuesWhenCalculatingMaxWorkGroupsCountThenLowestResultIsAlwaysReturned) {
usedSlm = 1 * KB;
numberOfBarriers = 1;
dssCount = 1;
workDim = 1;
lws[0] = simd;
threadCount = 1;
EXPECT_EQ(1u, getMaxWorkGroupCount());
threadCount = 1024;
EXPECT_NE(1u, getMaxWorkGroupCount());
numberOfBarriers = 32;
EXPECT_EQ(1u, getMaxWorkGroupCount());
numberOfBarriers = 1;
EXPECT_NE(1u, getMaxWorkGroupCount());
usedSlm = availableSlm;
EXPECT_EQ(1u, getMaxWorkGroupCount());
}
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