258 lines
9.1 KiB
C++
258 lines
9.1 KiB
C++
/*
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* Copyright (c) 2017, Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "runtime/command_queue/local_id_gen.h"
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#include "runtime/helpers/aligned_memory.h"
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#include "runtime/helpers/ptr_math.h"
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#include "gtest/gtest.h"
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#include <algorithm>
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#include <cstdint>
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using namespace OCLRT;
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TEST(LocalID, GRFsPerThread_SIMD8) {
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uint32_t simd = 8;
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EXPECT_EQ(1u, getGRFsPerThread(simd));
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}
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TEST(LocalID, GRFsPerThread_SIMD16) {
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uint32_t simd = 16;
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EXPECT_EQ(1u, getGRFsPerThread(simd));
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}
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TEST(LocalID, GRFsPerThread_SIMD32) {
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uint32_t simd = 32;
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EXPECT_EQ(2u, getGRFsPerThread(simd));
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}
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TEST(LocalID, ThreadsPerWorkgroup) {
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size_t lws = 33;
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uint32_t simd = 32;
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EXPECT_EQ(2u, getThreadsPerWG(simd, lws));
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}
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TEST(LocalID, PerThreadSizeLocalIDs_SIMD8) {
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uint32_t simd = 8;
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// 3 channels (x,y,z) * 1 GRFs per thread (@SIMD8)
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EXPECT_EQ(3 * sizeof(GRF), getPerThreadSizeLocalIDs(simd));
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}
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TEST(LocalID, PerThreadSizeLocalIDs_SIMD16) {
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uint32_t simd = 16;
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// 3 channels (x,y,z) * 1 GRFs per thread (@SIMD16)
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EXPECT_EQ(3 * sizeof(GRF), getPerThreadSizeLocalIDs(simd));
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}
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TEST(LocalID, PerThreadSizeLocalIDs_SIMD32) {
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uint32_t simd = 32;
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// 3 channels (x,y,z) * 2 GRFs per thread (@SIMD32)
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EXPECT_EQ(6 * sizeof(GRF), getPerThreadSizeLocalIDs(simd));
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}
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struct LocalIDFixture : public ::testing::TestWithParam<std::tuple<int, int, int, int>> {
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void SetUp() override {
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simd = std::get<0>(GetParam());
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localWorkSizeX = std::get<1>(GetParam());
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localWorkSizeY = std::get<2>(GetParam());
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localWorkSizeZ = std::get<3>(GetParam());
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localWorkSize = localWorkSizeX * localWorkSizeY * localWorkSizeZ;
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if (localWorkSize > 256) {
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localWorkSizeY = std::min(256 / localWorkSizeX, localWorkSizeY);
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localWorkSizeZ = std::min(256 / (localWorkSizeX * localWorkSizeY), localWorkSizeZ);
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localWorkSize = localWorkSizeX * localWorkSizeY * localWorkSizeZ;
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}
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const auto bufferSize = 32 * 3 * 16 * sizeof(uint16_t);
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buffer = reinterpret_cast<uint16_t *>(alignedMalloc(bufferSize, 32));
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memset(buffer, 0xff, bufferSize);
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}
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void TearDown() override {
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alignedFree(buffer);
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}
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void validateIDWithinLimits(uint32_t simd, uint32_t lwsX, uint32_t lwsY, uint32_t lwsZ) {
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auto idsPerThread = simd;
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// As per BackEnd HLD, SIMD32 has 32 localIDs per channel. SIMD8/16 has up to 16 localIDs.
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auto skipPerThread = simd == 32 ? 32 : 16;
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auto pBufferX = buffer;
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auto pBufferY = pBufferX + skipPerThread;
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auto pBufferZ = pBufferY + skipPerThread;
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auto numWorkItems = lwsX * lwsY * lwsZ;
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size_t itemIndex = 0;
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while (numWorkItems > 0) {
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EXPECT_LT(pBufferX[itemIndex], lwsX) << simd << " " << lwsX << " " << lwsY << " " << lwsZ;
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EXPECT_LT(pBufferY[itemIndex], lwsY) << simd << " " << lwsX << " " << lwsY << " " << lwsZ;
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EXPECT_LT(pBufferZ[itemIndex], lwsZ) << simd << " " << lwsX << " " << lwsY << " " << lwsZ;
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++itemIndex;
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if (idsPerThread == itemIndex) {
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pBufferX += skipPerThread * 3;
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pBufferY += skipPerThread * 3;
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pBufferZ += skipPerThread * 3;
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itemIndex = 0;
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}
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--numWorkItems;
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}
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}
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void validateAllWorkItemsCovered(uint32_t simd, uint32_t lwsX, uint32_t lwsY, uint32_t lwsZ) {
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auto idsPerThread = simd;
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// As per BackEnd HLD, SIMD32 has 32 localIDs per channel. SIMD8/16 has up to 16 localIDs.
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auto skipPerThread = simd == 32 ? 32 : 16;
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auto pBufferX = buffer;
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auto pBufferY = pBufferX + skipPerThread;
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auto pBufferZ = pBufferY + skipPerThread;
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auto numWorkItems = lwsX * lwsY * lwsZ;
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// Initialize local ID hit table
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uint32_t localIDHitTable[8];
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memset(localIDHitTable, 0, sizeof(localIDHitTable));
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size_t itemIndex = 0;
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while (numWorkItems > 0) {
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// Flatten out the IDs
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auto workItem = pBufferX[itemIndex] + pBufferY[itemIndex] * lwsX + pBufferZ[itemIndex] * lwsX * lwsY;
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ASSERT_LT(workItem, 256u);
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// Look up in the hit table
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auto &hitItem = localIDHitTable[workItem / 32];
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auto hitBit = 1 << (workItem % 32);
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// No double-hits
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EXPECT_EQ(0u, hitItem & hitBit);
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// Set that work item as hit
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hitItem |= hitBit;
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++itemIndex;
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if (idsPerThread == itemIndex) {
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pBufferX += skipPerThread * 3;
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pBufferY += skipPerThread * 3;
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pBufferZ += skipPerThread * 3;
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itemIndex = 0;
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}
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--numWorkItems;
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}
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// All entries in hit table should be in form of n^2 - 1
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for (uint32_t i : localIDHitTable) {
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EXPECT_EQ(0u, i & (i + 1));
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}
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}
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void dumpBuffer(uint32_t simd, uint32_t lwsX, uint32_t lwsY, uint32_t lwsZ) {
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auto workSize = lwsX * lwsY * lwsZ;
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auto threads = (workSize + simd - 1) / simd;
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auto pBuffer = buffer;
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// As per BackEnd HLD, SIMD32 has 32 localIDs per channel. SIMD8/16 has up to 16 localIDs.
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auto skipPerThread = simd == 32 ? 32 : 16;
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while (threads-- > 0) {
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auto lanes = std::min(workSize, simd);
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for (auto dimension = 0u; dimension < 3u; ++dimension) {
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for (auto lane = 0u; lane < lanes; ++lane) {
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printf("%04d ", (unsigned int)pBuffer[lane]);
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}
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pBuffer += skipPerThread;
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printf("\n");
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}
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workSize -= simd;
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}
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}
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// Test parameters
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uint32_t localWorkSizeX;
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uint32_t localWorkSizeY;
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uint32_t localWorkSizeZ;
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uint32_t localWorkSize;
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uint32_t simd;
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// Provide support for a max LWS of 256
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// 32 threads @ SIMD8
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// 3 channels (x/y/z)
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// 16 lanes per thread (SIMD8 - only 8 used)
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uint16_t *buffer;
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};
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TEST_P(LocalIDFixture, checkIDWithinLimits) {
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generateLocalIDs(buffer, simd, localWorkSizeX, localWorkSizeY, localWorkSizeZ);
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validateIDWithinLimits(simd, localWorkSizeX, localWorkSizeY, localWorkSizeZ);
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}
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TEST_P(LocalIDFixture, checkAllWorkItemsCovered) {
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generateLocalIDs(buffer, simd, localWorkSizeX, localWorkSizeY, localWorkSizeZ);
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validateAllWorkItemsCovered(simd, localWorkSizeX, localWorkSizeY, localWorkSizeZ);
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}
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TEST_P(LocalIDFixture, sizeCalculationLocalIDs) {
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auto workItems = localWorkSizeX * localWorkSizeY * localWorkSizeZ;
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auto sizeTotalPerThreadData = getThreadsPerWG(simd, workItems) * getPerThreadSizeLocalIDs(simd);
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// Should be multiple of GRFs
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auto sizeGRF = sizeof(GRF);
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EXPECT_EQ(0u, sizeTotalPerThreadData % sizeGRF);
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auto numGRFsPerThread = (simd == 32) ? 2 : 1;
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auto numThreadsExpected = (workItems + simd - 1) / simd;
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auto numGRFsExpected = 3 * numGRFsPerThread * numThreadsExpected;
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EXPECT_EQ(numGRFsExpected * sizeGRF, sizeTotalPerThreadData);
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}
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#define SIMDParams ::testing::Values(8, 16, 32)
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#if HEAVY_DUTY_TESTING
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#define LWSXParams ::testing::Values(1, 7, 8, 9, 15, 16, 17, 31, 32, 33, 64, 128, 256)
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#define LWSYParams ::testing::Values(1, 2, 3, 4, 5, 6, 7, 8)
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#define LWSZParams ::testing::Values(1, 2, 3, 4)
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#else
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#define LWSXParams ::testing::Values(1, 7, 8, 9, 15, 16, 17, 31, 32, 33, 64, 128, 256)
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#define LWSYParams ::testing::Values(1, 2, 4, 8)
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#define LWSZParams ::testing::Values(1)
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#endif
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INSTANTIATE_TEST_CASE_P(AllCombinations, LocalIDFixture, ::testing::Combine(SIMDParams, LWSXParams, LWSYParams, LWSZParams));
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// To debug a specific configuration replace the list of Values with specific values.
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// NOTE: You'll need a unique test prefix
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INSTANTIATE_TEST_CASE_P(SingleTest, LocalIDFixture,
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::testing::Combine(
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::testing::Values(32), //SIMD
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::testing::Values(5), //LWSX
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::testing::Values(6), //LWSY
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::testing::Values(7))); //LWSZ
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