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7df9945ebe
Change-Id: I67a6919bbbff1d30c7d6cdb257b41c87bad51e7f Signed-off-by: Mateusz Jablonski <mateusz.jablonski@intel.com>
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
/*
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* Copyright (C) 2019-2020 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "shared/source/helpers/kernel_helpers.h"
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#include "shared/source/helpers/basic_math.h"
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#include "shared/source/helpers/debug_helpers.h"
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#include <algorithm>
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namespace NEO {
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uint32_t KernelHelper::getMaxWorkGroupCount(uint32_t simd, uint32_t availableThreadCount, uint32_t dssCount, uint32_t availableSlmSize,
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uint32_t usedSlmSize, uint32_t maxBarrierCount, uint32_t numberOfBarriers, uint32_t workDim,
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const size_t *localWorkSize) {
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UNRECOVERABLE_IF((workDim == 0) || (workDim > 3));
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UNRECOVERABLE_IF(localWorkSize == nullptr);
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size_t workGroupSize = localWorkSize[0];
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for (uint32_t i = 1; i < workDim; i++) {
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workGroupSize *= localWorkSize[i];
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}
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auto threadsPerThreadGroup = static_cast<uint32_t>(Math::divideAndRoundUp(workGroupSize, simd));
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auto maxWorkGroupsCount = availableThreadCount / threadsPerThreadGroup;
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if (numberOfBarriers > 0) {
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auto maxWorkGroupsCountDueToBarrierUsage = dssCount * (maxBarrierCount / numberOfBarriers);
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maxWorkGroupsCount = std::min(maxWorkGroupsCount, maxWorkGroupsCountDueToBarrierUsage);
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}
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if (usedSlmSize > 0) {
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auto maxWorkGroupsCountDueToSlm = availableSlmSize / usedSlmSize;
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maxWorkGroupsCount = std::min(maxWorkGroupsCount, maxWorkGroupsCountDueToSlm);
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}
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return maxWorkGroupsCount;
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}
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} // namespace NEO
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