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https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator
synced 2024-11-05 04:10:06 +00:00
Added benchmark for linear allocator.
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13
src/Common.h
13
src/Common.h
@ -206,6 +206,19 @@ private:
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uint32_t GenerateFast() { return m_Value = (m_Value * 196314165 + 907633515); }
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};
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// Wrapper for RandomNumberGenerator compatible with STL "UniformRandomNumberGenerator" idea.
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struct MyUniformRandomNumberGenerator
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{
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typedef uint32_t result_type;
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MyUniformRandomNumberGenerator(RandomNumberGenerator& gen) : m_Gen(gen) { }
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static uint32_t min() { return 0; }
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static uint32_t max() { return UINT32_MAX; }
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uint32_t operator()() { return m_Gen.Generate(); }
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private:
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RandomNumberGenerator& m_Gen;
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};
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void ReadFile(std::vector<char>& out, const char* fileName);
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enum class CONSOLE_COLOR
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193
src/Tests.cpp
193
src/Tests.cpp
@ -7,8 +7,26 @@
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#ifdef _WIN32
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enum CONFIG_TYPE {
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CONFIG_TYPE_MINIMUM,
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CONFIG_TYPE_SMALL,
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CONFIG_TYPE_AVERAGE,
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CONFIG_TYPE_LARGE,
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CONFIG_TYPE_MAXIMUM,
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CONFIG_TYPE_COUNT
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};
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static constexpr CONFIG_TYPE ConfigType = CONFIG_TYPE_SMALL;
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//static constexpr CONFIG_TYPE ConfigType = CONFIG_TYPE_LARGE;
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enum class FREE_ORDER { FORWARD, BACKWARD, RANDOM, COUNT };
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static const wchar_t* FREE_ORDER_NAMES[] = {
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L"FORWARD",
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L"BACKWARD",
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L"RANDOM",
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};
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struct AllocationSize
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{
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uint32_t Probability;
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@ -1948,6 +1966,169 @@ static void ManuallyTestLinearAllocator()
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vmaDestroyPool(g_hAllocator, pool);
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}
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static void BenchmarkLinearAllocatorCase(bool linear, bool empty, FREE_ORDER freeOrder)
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{
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RandomNumberGenerator rand{16223};
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const VkDeviceSize bufSizeMin = 32;
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const VkDeviceSize bufSizeMax = 1024;
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const size_t maxBufCapacity = 10000;
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const uint32_t iterationCount = 10;
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VkBufferCreateInfo sampleBufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
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sampleBufCreateInfo.size = bufSizeMax;
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sampleBufCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
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VmaAllocationCreateInfo sampleAllocCreateInfo = {};
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sampleAllocCreateInfo.usage = VMA_MEMORY_USAGE_GPU_ONLY;
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VmaPoolCreateInfo poolCreateInfo = {};
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VkResult res = vmaFindMemoryTypeIndexForBufferInfo(g_hAllocator, &sampleBufCreateInfo, &sampleAllocCreateInfo, &poolCreateInfo.memoryTypeIndex);
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assert(res == VK_SUCCESS);
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poolCreateInfo.blockSize = bufSizeMax * maxBufCapacity;
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if(linear)
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poolCreateInfo.flags = VMA_POOL_CREATE_LINEAR_ALGORITHM_BIT;
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poolCreateInfo.minBlockCount = poolCreateInfo.maxBlockCount = 1;
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VmaPool pool = nullptr;
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res = vmaCreatePool(g_hAllocator, &poolCreateInfo, &pool);
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assert(res == VK_SUCCESS);
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// Buffer created just to get memory requirements. Never bound to any memory.
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VkBuffer dummyBuffer = VK_NULL_HANDLE;
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res = vkCreateBuffer(g_hDevice, &sampleBufCreateInfo, nullptr, &dummyBuffer);
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assert(res == VK_SUCCESS && dummyBuffer);
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VkMemoryRequirements memReq = {};
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vkGetBufferMemoryRequirements(g_hDevice, dummyBuffer, &memReq);
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vkDestroyBuffer(g_hDevice, dummyBuffer, nullptr);
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VmaAllocationCreateInfo allocCreateInfo = {};
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allocCreateInfo.pool = pool;
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VmaAllocation alloc;
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std::vector<VmaAllocation> baseAllocations;
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if(!empty)
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{
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// Make allocations up to half of pool size.
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VkDeviceSize totalSize = 0;
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while(totalSize < poolCreateInfo.blockSize / 2)
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{
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memReq.size = bufSizeMin + rand.Generate() % (bufSizeMax - bufSizeMin);
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res = vmaAllocateMemory(g_hAllocator, &memReq, &allocCreateInfo, &alloc, nullptr);
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assert(res == VK_SUCCESS);
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baseAllocations.push_back(alloc);
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totalSize += memReq.size;
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}
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// Delete half of them, choose randomly.
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size_t allocsToDelete = baseAllocations.size() / 2;
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for(size_t i = 0; i < allocsToDelete; ++i)
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{
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const size_t index = (size_t)rand.Generate() % baseAllocations.size();
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vmaFreeMemory(g_hAllocator, baseAllocations[index]);
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baseAllocations.erase(baseAllocations.begin() + index);
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}
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}
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// BENCHMARK
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const size_t allocCount = maxBufCapacity / 2;
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std::vector<VmaAllocation> testAllocations;
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testAllocations.reserve(allocCount);
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duration allocTotalDuration = duration::zero();
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duration freeTotalDuration = duration::zero();
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for(uint32_t iterationIndex = 0; iterationIndex < iterationCount; ++iterationIndex)
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{
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// Allocations
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time_point allocTimeBeg = std::chrono::high_resolution_clock::now();
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for(size_t i = 0; i < allocCount; ++i)
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{
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memReq.size = bufSizeMin + rand.Generate() % (bufSizeMax - bufSizeMin);
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res = vmaAllocateMemory(g_hAllocator, &memReq, &allocCreateInfo, &alloc, nullptr);
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assert(res == VK_SUCCESS);
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testAllocations.push_back(alloc);
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}
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allocTotalDuration += std::chrono::high_resolution_clock::now() - allocTimeBeg;
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// Deallocations
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switch(freeOrder)
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{
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case FREE_ORDER::FORWARD:
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// Leave testAllocations unchanged.
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break;
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case FREE_ORDER::BACKWARD:
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std::reverse(testAllocations.begin(), testAllocations.end());
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break;
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case FREE_ORDER::RANDOM:
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std::shuffle(testAllocations.begin(), testAllocations.end(), MyUniformRandomNumberGenerator(rand));
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break;
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default: assert(0);
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}
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time_point freeTimeBeg = std::chrono::high_resolution_clock::now();
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for(size_t i = 0; i < allocCount; ++i)
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vmaFreeMemory(g_hAllocator, testAllocations[i]);
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freeTotalDuration += std::chrono::high_resolution_clock::now() - freeTimeBeg;
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testAllocations.clear();
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}
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// Delete baseAllocations
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while(!baseAllocations.empty())
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{
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vmaFreeMemory(g_hAllocator, baseAllocations.back());
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baseAllocations.pop_back();
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}
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vmaDestroyPool(g_hAllocator, pool);
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wprintf(L" LinearAlgorithm=%u %s FreeOrder=%s: allocations %g s, free %g s\n",
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linear ? 1 : 0,
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empty ? L"Empty" : L"Not empty",
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FREE_ORDER_NAMES[(size_t)freeOrder],
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ToFloatSeconds(allocTotalDuration),
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ToFloatSeconds(freeTotalDuration));
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}
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static void BenchmarkLinearAllocator()
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{
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wprintf(L"Benchmark linear allocator\n");
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uint32_t freeOrderCount = 1;
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if(ConfigType >= CONFIG_TYPE::CONFIG_TYPE_LARGE)
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freeOrderCount = 3;
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else if(ConfigType >= CONFIG_TYPE::CONFIG_TYPE_SMALL)
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freeOrderCount = 2;
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const uint32_t emptyCount = ConfigType >= CONFIG_TYPE::CONFIG_TYPE_SMALL ? 2 : 1;
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for(uint32_t freeOrderIndex = 0; freeOrderIndex < freeOrderCount; ++freeOrderIndex)
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{
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FREE_ORDER freeOrder = FREE_ORDER::COUNT;
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switch(freeOrderIndex)
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{
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case 0: freeOrder = FREE_ORDER::BACKWARD; break;
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case 1: freeOrder = FREE_ORDER::FORWARD; break;
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case 2: freeOrder = FREE_ORDER::RANDOM; break;
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default: assert(0);
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}
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for(uint32_t emptyIndex = 0; emptyIndex < emptyCount; ++emptyIndex)
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{
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for(uint32_t linearIndex = 0; linearIndex < 2; ++linearIndex)
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{
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BenchmarkLinearAllocatorCase(
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linearIndex ? 1 : 0, // linear
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emptyIndex ? 0 : 1, // empty
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freeOrder); // freeOrder
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}
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}
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}
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}
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static void TestPool_SameSize()
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{
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const VkDeviceSize BUF_SIZE = 1024 * 1024;
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@ -3194,17 +3375,6 @@ static void PerformCustomPoolTest(FILE* file)
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WritePoolTestResult(file, "Code desc", "Test desc", config, result);
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}
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enum CONFIG_TYPE {
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CONFIG_TYPE_MINIMUM,
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CONFIG_TYPE_SMALL,
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CONFIG_TYPE_AVERAGE,
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CONFIG_TYPE_LARGE,
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CONFIG_TYPE_MAXIMUM,
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CONFIG_TYPE_COUNT
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};
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static constexpr CONFIG_TYPE ConfigType = CONFIG_TYPE_SMALL;
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//static constexpr CONFIG_TYPE ConfigType = CONFIG_TYPE_LARGE;
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static const char* CODE_DESCRIPTION = "Foo";
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static void PerformMainTests(FILE* file)
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@ -3687,6 +3857,7 @@ void Test()
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TestMappingMultithreaded();
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TestLinearAllocator();
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ManuallyTestLinearAllocator();
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BenchmarkLinearAllocator();
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TestDefragmentationSimple();
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TestDefragmentationFull();
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@ -16,16 +16,14 @@ macros if you want to configure the library and then include its header to
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include all public interface declarations. Example:
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*/
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//#define VMA_USE_STL_CONTAINERS 1
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//#define VMA_HEAVY_ASSERT(expr) assert(expr)
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//#define VMA_USE_STL_CONTAINERS 1
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//#define VMA_DEDICATED_ALLOCATION 0
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//#define VMA_DEBUG_MARGIN 16
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//#define VMA_DEBUG_DETECT_CORRUPTION 1
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//#define VMA_DEBUG_INITIALIZE_ALLOCATIONS 1
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//#define VMA_RECORDING_ENABLED 0
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//#define VMA_DEBUG_MIN_BUFFER_IMAGE_GRANULARITY 256
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#pragma warning(push, 4)
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#pragma warning(disable: 4127) // conditional expression is constant
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@ -641,7 +641,7 @@ you can achieve behavior of a ring buffer / queue.
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![Ring buffer](../gfx/Linear_allocator_5_ring_buffer.png)
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Pools with linear algorithm support lost allocations when used as ring buffer.
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Pools with linear algorithm support [lost allocations](@ref lost_allocations) when used as ring buffer.
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If there is not enough free space for a new allocation, but existing allocations
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from the front of the queue can become lost, they become lost and the allocation
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succeeds.
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@ -8333,7 +8333,7 @@ bool VmaBlockMetadata_Linear::CreateAllocationRequest(
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for(size_t nextSuballocIndex = suballocations2nd.size(); nextSuballocIndex--; )
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{
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const VmaSuballocation& nextSuballoc = suballocations2nd[nextSuballocIndex];
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if(VmaBlocksOnSamePage(nextSuballoc.offset, nextSuballoc.size, resultOffset, bufferImageGranularity))
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if(VmaBlocksOnSamePage(resultOffset, allocSize, nextSuballoc.offset, bufferImageGranularity))
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{
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if(VmaIsBufferImageGranularityConflict(nextSuballoc.type, allocType))
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{
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@ -8364,7 +8364,7 @@ bool VmaBlockMetadata_Linear::CreateAllocationRequest(
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for(size_t prevSuballocIndex = suballocations1st.size(); prevSuballocIndex--; )
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{
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const VmaSuballocation& prevSuballoc = suballocations1st[prevSuballocIndex];
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if(VmaBlocksOnSamePage(resultOffset, allocSize, prevSuballoc.offset, bufferImageGranularity))
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if(VmaBlocksOnSamePage(prevSuballoc.offset, prevSuballoc.size, resultOffset, bufferImageGranularity))
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{
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if(VmaIsBufferImageGranularityConflict(allocType, prevSuballoc.type))
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{
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