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nvidia--tensorrt/samples/common/sampleEngines.cpp
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/*
* SPDX-FileCopyrightText: Copyright (c) 1993-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* 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 <algorithm>
#include <chrono>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <iterator>
#include <map>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <vector>
#include "NvInfer.h"
#include "NvOnnxParser.h"
#include "ErrorRecorder.h"
#include "common.h"
#include "logger.h"
#include "sampleDevice.h"
#include "sampleEngines.h"
#include "sampleEntrypoints.h"
#include "sampleOptions.h"
#include "sampleUtils.h"
#if ENABLE_UNIFIED_BUILDER
#include "NvInferConsistency.h"
#include "safeErrorRecorder.h"
#endif
// cspell:ignore calib CUFILE nvonnxparser
using namespace nvinfer1;
namespace sample
{
namespace
{
class FileStreamWriter final : public nvinfer1::IStreamWriter
{
protected:
std::ofstream mStream;
int64_t mTotalWrittenSize;
public:
FileStreamWriter(std::string const& path)
: mStream(path, std::ios::binary)
, mTotalWrittenSize(0)
{
}
int64_t write(void const* data, int64_t nbBytes) final
{
SMP_RETVAL_IF_FALSE(
(mStream.is_open() && mStream.good()), "Cannot write to FileStreamWriter", -1, sample::gLogError);
auto const* src = reinterpret_cast<char const*>(data);
mStream.write(src, nbBytes);
mTotalWrittenSize += nbBytes;
return nbBytes;
}
int64_t finalize()
{
mStream.close();
return mTotalWrittenSize;
}
};
} // namespace
nvinfer1::ICudaEngine* LazilyDeserializedEngine::get()
{
SMP_RETVAL_IF_FALSE(
!mIsSafe, "Safe mode is enabled, but trying to get standard engine!", nullptr, sample::gLogError);
if (mEngine == nullptr)
{
SMP_RETVAL_IF_FALSE(getAsyncFileReader().isOpen() || !getBlob().empty(),
"Engine is empty. Nothing to deserialize!", nullptr, sample::gLogError);
using time_point = std::chrono::time_point<std::chrono::high_resolution_clock>;
using duration = std::chrono::duration<float>;
time_point const deserializeStartTime{std::chrono::high_resolution_clock::now()};
if (mLeanDLLPath.empty())
{
mRuntime.reset(createRuntime());
}
else
{
mParentRuntime.reset(createRuntime());
ASSERT(mParentRuntime != nullptr);
mRuntime.reset(mParentRuntime->loadRuntime(mLeanDLLPath.c_str()));
}
ASSERT(mRuntime != nullptr);
if (mVersionCompatible)
{
// Application needs to opt into allowing deserialization of engines with embedded lean runtime.
mRuntime->setEngineHostCodeAllowed(true);
}
if (!mTempdir.empty())
{
mRuntime->setTemporaryDirectory(mTempdir.c_str());
}
mRuntime->setTempfileControlFlags(mTempfileControls);
SMP_RETVAL_IF_FALSE(mRuntime != nullptr, "runtime creation failed", nullptr, sample::gLogError);
if (mDLACore != -1)
{
mRuntime->setDLACore(mDLACore);
}
mRuntime->setErrorRecorder(&gRecorder);
for (auto const& pluginPath : mDynamicPlugins)
{
mRuntime->getPluginRegistry().loadLibrary(pluginPath.c_str());
}
if (getAsyncFileReader().isOpen())
{
mEngine.reset(mRuntime->deserializeCudaEngine(getAsyncFileReader()));
}
else
{
auto const& engineBlob = getBlob();
mEngine.reset(mRuntime->deserializeCudaEngine(engineBlob.data, engineBlob.size));
}
SMP_RETVAL_IF_FALSE(mEngine != nullptr, "Engine deserialization failed", nullptr, sample::gLogError);
time_point const deserializeEndTime{std::chrono::high_resolution_clock::now()};
sample::gLogInfo << "Engine deserialized in " << duration(deserializeEndTime - deserializeStartTime).count()
<< " sec." << std::endl;
}
return mEngine.get();
}
nvinfer1::ICudaEngine* LazilyDeserializedEngine::release()
{
return mEngine.release();
}
bool LazilyDeserializedEngine::checkDLASafe()
{
ASSERT(sample::hasSafeRuntime());
SMP_RETVAL_IF_FALSE(mDLACore == -1, "Safe DLA engine built with kDLA_STANDALONE should not be run via TRT!", false,
sample::gLogError);
return true;
}
//!
//! \brief Generate a network definition for a given model
//!
//! \param[in] model Model options for this network
//! \param[in,out] network Network storing the parsed results
//! \param[in,out] err Error stream
//! \param[out] vcPluginLibrariesUsed If not nullptr, will be populated with paths to VC plugin libraries required by
//! the parsed network.
//! \param[in] builderConfig Builder config required for DLA capability validation.
//!
//! \return Parser The parser used to initialize the network and that holds the weights for the network, or an invalid
//! parser (the returned parser converts to false if tested)
//!
//! Constant input dimensions in the model must not be changed in the corresponding
//! network definition, because its correctness may rely on the constants.
//!
//! \see Parser::operator bool()
//!
Parser modelToNetwork(ModelOptions const& model, BuildOptions const& build, nvinfer1::INetworkDefinition& network,
std::ostream& err, std::vector<std::string>* vcPluginLibrariesUsed, nvinfer1::IBuilderConfig const& builderConfig)
{
sample::gLogInfo << "Start parsing network model." << std::endl;
auto const tBegin = std::chrono::high_resolution_clock::now();
Parser parser;
switch (model.baseModel.format)
{
case ModelFormat::kONNX:
{
using namespace nvonnxparser;
parser.onnxParser.reset(createONNXParser(network));
ASSERT(parser.onnxParser != nullptr);
// kNATIVE_INSTANCENORM is ON by default in the parser and must be cleared to use the plugin implementation.
if (build.pluginInstanceNorm)
{
parser.onnxParser->clearFlag(OnnxParserFlag::kNATIVE_INSTANCENORM);
}
if (build.enableUInt8AsymmetricQuantizationDLA)
{
parser.onnxParser->setFlag(OnnxParserFlag::kENABLE_UINT8_AND_ASYMMETRIC_QUANTIZATION_DLA);
}
if (build.reportCapabilityDLA)
{
parser.onnxParser->setFlag(OnnxParserFlag::kREPORT_CAPABILITY_DLA);
parser.onnxParser->setBuilderConfig(&builderConfig);
}
if (build.adjustForDLA)
{
parser.onnxParser->setFlag(OnnxParserFlag::kADJUST_FOR_DLA);
}
if (build.enablePluginOverride)
{
parser.onnxParser->setFlag(OnnxParserFlag::kENABLE_PLUGIN_OVERRIDE);
}
if (!parser.onnxParser->parseFromFile(
model.baseModel.model.c_str(), static_cast<int>(sample::gLogger.getReportableSeverity())))
{
err << "Failed to parse onnx file" << std::endl;
parser.onnxParser.reset();
}
if (vcPluginLibrariesUsed && parser.onnxParser.get())
{
int64_t nbPluginLibs;
char const* const* pluginLibArray = parser.onnxParser->getUsedVCPluginLibraries(nbPluginLibs);
if (nbPluginLibs >= 0)
{
vcPluginLibrariesUsed->reserve(nbPluginLibs);
for (int64_t i = 0; i < nbPluginLibs; ++i)
{
sample::gLogInfo << "Using VC plugin library " << pluginLibArray[i] << std::endl;
vcPluginLibrariesUsed->emplace_back(std::string{pluginLibArray[i]});
}
}
else
{
sample::gLogWarning << "Failure to query VC plugin libraries required by parsed ONNX network"
<< std::endl;
}
}
break;
}
case ModelFormat::kANY: break;
}
auto const tEnd = std::chrono::high_resolution_clock::now();
float const parseTime = std::chrono::duration<float>(tEnd - tBegin).count();
sample::gLogInfo << "Finished parsing network model. Parse time: " << parseTime << std::endl;
return parser;
}
namespace
{
void setLayerDeviceTypes(
INetworkDefinition const& network, IBuilderConfig& config, LayerDeviceTypes const& layerDeviceTypes)
{
for (int32_t layerIdx = 0; layerIdx < network.getNbLayers(); ++layerIdx)
{
auto* layer = network.getLayer(layerIdx);
auto const layerName = layer->getName();
auto match = findPlausible(layerDeviceTypes, layerName);
if (match != layerDeviceTypes.end())
{
DeviceType const deviceType = match->second;
sample::gLogInfo << "Set layer " << layerName << " to device type " << deviceType << std::endl;
config.setDeviceType(layer, deviceType);
}
}
}
void setDecomposables(INetworkDefinition& network, DecomposableAttentions const& decomposableAttentions)
{
for (int32_t layerIdx = 0; layerIdx < network.getNbLayers(); ++layerIdx)
{
auto* layer = network.getLayer(layerIdx);
if (layer->getType() == LayerType::kATTENTION_INPUT)
{
auto* attention = static_cast<nvinfer1::IAttentionInputLayer const*>(layer)->getAttention();
auto const attentionName = attention->getName();
auto match = findPlausible(decomposableAttentions, attentionName);
if (match != decomposableAttentions.end())
{
attention->setDecomposable(match->second);
sample::gLogInfo << "Set attention " << attentionName
<< " to decomposable = " << ((match->second) ? "true" : "false") << std::endl;
}
}
}
}
void markDebugTensors(INetworkDefinition& network, StringSet const& debugTensors)
{
for (int64_t inputIndex = 0; inputIndex < network.getNbInputs(); ++inputIndex)
{
auto* t = network.getInput(inputIndex);
auto const tensorName = t->getName();
if (debugTensors.count(tensorName) > 0)
{
network.markDebug(*t);
}
}
for (int64_t layerIndex = 0; layerIndex < network.getNbLayers(); ++layerIndex)
{
auto* layer = network.getLayer(layerIndex);
for (int64_t outputIndex = 0; outputIndex < layer->getNbOutputs(); ++outputIndex)
{
auto* t = layer->getOutput(outputIndex);
auto const tensorName = t->getName();
if (debugTensors.count(tensorName) > 0)
{
network.markDebug(*t);
}
}
}
}
void setMemoryPoolLimits(IBuilderConfig& config, BuildOptions const& build)
{
auto const roundToBytes = [](double const size, bool fromMB = true) {
return static_cast<size_t>(size * (fromMB ? 1.0_MiB : 1.0_KiB));
};
if (build.workspace >= 0)
{
config.setMemoryPoolLimit(MemoryPoolType::kWORKSPACE, roundToBytes(build.workspace));
}
if (build.dlaSRAM >= 0)
{
size_t const sizeInBytes = roundToBytes(build.dlaSRAM);
size_t sizeInPowerOf2{1};
// Using 2^30 bytes as a loose upper bound to prevent the possibility of overflows and infinite loops.
while (sizeInPowerOf2 < 31 && (static_cast<size_t>(1) << sizeInPowerOf2) <= sizeInBytes)
{
++sizeInPowerOf2;
}
--sizeInPowerOf2;
if (sizeInPowerOf2 == 30)
{
sample::gLogWarning
<< "User-specified DLA managed SRAM size is too large and has been clipped to 2^30 bytes. "
<< "Please make sure that this is the intended managed SRAM size." << std::endl;
}
config.setMemoryPoolLimit(MemoryPoolType::kDLA_MANAGED_SRAM, static_cast<size_t>(1) << sizeInPowerOf2);
}
if (build.dlaLocalDRAM >= 0)
{
config.setMemoryPoolLimit(MemoryPoolType::kDLA_LOCAL_DRAM, roundToBytes(build.dlaLocalDRAM));
}
if (build.dlaGlobalDRAM >= 0)
{
config.setMemoryPoolLimit(MemoryPoolType::kDLA_GLOBAL_DRAM, roundToBytes(build.dlaGlobalDRAM));
}
if (build.tacticSharedMem >= 0)
{
config.setMemoryPoolLimit(MemoryPoolType::kTACTIC_SHARED_MEMORY, roundToBytes(build.tacticSharedMem, false));
}
}
void setPreviewFeatures(IBuilderConfig& config, BuildOptions const& build)
{
auto const setFlag = [&](PreviewFeature feat) {
int32_t featVal = static_cast<int32_t>(feat);
if (build.previewFeatures.find(featVal) != build.previewFeatures.end())
{
config.setPreviewFeature(feat, build.previewFeatures.at(featVal));
}
};
setFlag(PreviewFeature::kALIASED_PLUGIN_IO_10_03);
setFlag(PreviewFeature::kRUNTIME_ACTIVATION_RESIZE_10_10);
}
[[nodiscard]] bool setupTilingSettings(BuildOptions const& build, IBuilderConfig& config, std::ostream& err)
{
if (!config.setTilingOptimizationLevel(static_cast<TilingOptimizationLevel>(build.tilingOptimizationLevel)))
{
err << "Can not set tilingOptimizationLevel(" << build.tilingOptimizationLevel << ")" << std::endl;
return false;
}
if (build.l2LimitForTiling != -1)
{
if (!config.setL2LimitForTiling(build.l2LimitForTiling))
{
err << "Can not set l2LimitForTiling(" << build.l2LimitForTiling << ")" << std::endl;
return false;
}
}
return true;
}
// NOLINTNEXTLINE(readability-function-cognitive-complexity, readability-function-size)
bool setupNetworkAndConfig(BuildOptions const& build, SystemOptions const& sys, IBuilder& builder,
INetworkDefinition& network, IBuilderConfig& config, std::ostream& err,
std::vector<std::vector<int8_t>>& sparseWeights)
{
std::vector<IOptimizationProfile*> profiles{};
profiles.resize(build.optProfiles.size());
for (auto& profile : profiles)
{
profile = builder.createOptimizationProfile();
}
bool hasDynamicShapes{false};
bool broadcastInputFormats = broadcastIOFormats(build.inputFormats, network.getNbInputs());
// Check if the provided input tensor names match the input tensors of the engine.
// Throw an error if the provided input tensor names cannot be found because it implies a potential typo.
for (auto const& shapes : build.optProfiles)
{
for (auto const& shape : shapes)
{
bool tensorNameFound{false};
for (int32_t i = 0; i < network.getNbInputs(); ++i)
{
if (matchStringWithOneWildcard(shape.first, network.getInput(i)->getName()))
{
tensorNameFound = true;
break;
}
}
if (!tensorNameFound)
{
sample::gLogError << "Cannot find input tensor with name \"" << shape.first << "\" in the network "
<< "inputs! Please make sure the input tensor names are correct." << std::endl;
return false;
}
}
}
for (uint32_t i = 0, n = network.getNbInputs(); i < n; i++)
{
// Set formats and data types of inputs
auto* input = network.getInput(i);
if (!build.inputFormats.empty())
{
int32_t inputFormatIndex = broadcastInputFormats ? 0 : i;
input->setAllowedFormats(build.inputFormats[inputFormatIndex].formats);
}
auto const dims = input->getDimensions();
auto const isScalar = dims.nbDims == 0;
auto const isDynamicInput = std::any_of(dims.d, dims.d + dims.nbDims, [](int32_t dim) { return dim == -1; })
|| input->isShapeTensor();
if (isDynamicInput)
{
hasDynamicShapes = true;
for (size_t i = 0; i < build.optProfiles.size(); i++)
{
auto const& optShapes = build.optProfiles[i];
auto profile = profiles[i];
auto const tensorName = input->getName();
auto shape = findPlausible(optShapes, tensorName);
ShapeRange shapes{};
// If no shape is provided, set dynamic dimensions to 1.
if (shape == optShapes.end())
{
constexpr int32_t kDEFAULT_DIMENSION{1};
std::vector<int64_t> staticDims;
if (input->isShapeTensor())
{
if (isScalar)
{
staticDims.push_back(1);
}
else
{
staticDims.resize(dims.d[0]);
std::fill(staticDims.begin(), staticDims.end(), kDEFAULT_DIMENSION);
}
}
else
{
staticDims.resize(dims.nbDims);
std::transform(dims.d, dims.d + dims.nbDims, staticDims.begin(),
[&](int dimension) { return dimension > 0 ? dimension : kDEFAULT_DIMENSION; });
}
sample::gLogWarning << "Dynamic dimensions required for input: " << tensorName
<< ", but no shapes were provided. Automatically overriding shape to: "
<< staticDims << std::endl;
std::fill(shapes.begin(), shapes.end(), staticDims);
}
else
{
shapes = shape->second;
}
std::vector<int64_t> profileDims{};
if (input->isShapeTensor())
{
profileDims = shapes[static_cast<size_t>(OptProfileSelector::kMIN)];
SMP_RETVAL_IF_FALSE(profile->setShapeValuesV2(tensorName, OptProfileSelector::kMIN,
profileDims.data(), static_cast<int>(profileDims.size())),
"Error in set shape values MIN", false, err);
profileDims = shapes[static_cast<size_t>(OptProfileSelector::kOPT)];
SMP_RETVAL_IF_FALSE(profile->setShapeValuesV2(tensorName, OptProfileSelector::kOPT,
profileDims.data(), static_cast<int>(profileDims.size())),
"Error in set shape values OPT", false, err);
profileDims = shapes[static_cast<size_t>(OptProfileSelector::kMAX)];
SMP_RETVAL_IF_FALSE(profile->setShapeValuesV2(tensorName, OptProfileSelector::kMAX,
profileDims.data(), static_cast<int>(profileDims.size())),
"Error in set shape values MAX", false, err);
sample::gLogInfo << "Set input shape tensor " << tensorName << " for optimization profile " << i
<< " to:"
<< " MIN=" << shapes[static_cast<size_t>(OptProfileSelector::kMIN)]
<< " OPT=" << shapes[static_cast<size_t>(OptProfileSelector::kOPT)]
<< " MAX=" << shapes[static_cast<size_t>(OptProfileSelector::kMAX)] << std::endl;
}
else
{
profileDims = shapes[static_cast<size_t>(OptProfileSelector::kMIN)];
SMP_RETVAL_IF_FALSE(
profile->setDimensions(tensorName, OptProfileSelector::kMIN, toDims(profileDims)),
"Error in set dimensions to profile MIN", false, err);
profileDims = shapes[static_cast<size_t>(OptProfileSelector::kOPT)];
SMP_RETVAL_IF_FALSE(
profile->setDimensions(tensorName, OptProfileSelector::kOPT, toDims(profileDims)),
"Error in set dimensions to profile OPT", false, err);
profileDims = shapes[static_cast<size_t>(OptProfileSelector::kMAX)];
SMP_RETVAL_IF_FALSE(
profile->setDimensions(tensorName, OptProfileSelector::kMAX, toDims(profileDims)),
"Error in set dimensions to profile MAX", false, err);
sample::gLogInfo << "Set shape of input tensor " << tensorName << " for optimization profile " << i
<< " to:"
<< " MIN=" << shapes[static_cast<size_t>(OptProfileSelector::kMIN)]
<< " OPT=" << shapes[static_cast<size_t>(OptProfileSelector::kOPT)]
<< " MAX=" << shapes[static_cast<size_t>(OptProfileSelector::kMAX)] << std::endl;
}
}
}
}
for (uint32_t i = 0, n = network.getNbOutputs(); i < n; i++)
{
auto* output = network.getOutput(i);
auto const dims = output->getDimensions();
// A shape tensor output with known static dimensions may have dynamic shape values inside it.
auto const isDynamicOutput = std::any_of(dims.d, dims.d + dims.nbDims, [](int32_t dim) { return dim == -1; })
|| output->isShapeTensor();
if (isDynamicOutput)
{
hasDynamicShapes = true;
}
}
if (!hasDynamicShapes && !build.optProfiles[0].empty())
{
sample::gLogError << "Static model does not take explicit shapes since the shape of inference tensors will be "
"determined by the model itself"
<< std::endl;
return false;
}
if (hasDynamicShapes)
{
for (auto profile : profiles)
{
SMP_RETVAL_IF_FALSE(profile->isValid(), "Required optimization profile is invalid", false, err);
SMP_RETVAL_IF_FALSE(
config.addOptimizationProfile(profile) != -1, "Error in add optimization profile", false, err);
}
}
bool broadcastOutputFormats = broadcastIOFormats(build.outputFormats, network.getNbOutputs(), false);
for (uint32_t i = 0, n = network.getNbOutputs(); i < n; i++)
{
// Set formats and data types of outputs
auto* output = network.getOutput(i);
if (!build.outputFormats.empty())
{
int32_t outputFormatIndex = broadcastOutputFormats ? 0 : i;
output->setAllowedFormats(build.outputFormats[outputFormatIndex].formats);
}
}
setMemoryPoolLimits(config, build);
setPreviewFeatures(config, build);
if (build.builderOptimizationLevel != defaultBuilderOptimizationLevel)
{
config.setBuilderOptimizationLevel(build.builderOptimizationLevel);
}
if (build.maxTactics != defaultMaxTactics)
{
config.setMaxNbTactics(build.maxTactics);
}
if (build.timingCacheMode == TimingCacheMode::kDISABLE)
{
config.setFlag(BuilderFlag::kDISABLE_TIMING_CACHE);
}
if (build.disableCompilationCache)
{
config.setFlag(BuilderFlag::kDISABLE_COMPILATION_CACHE);
}
if (build.errorOnTimingCacheMiss)
{
config.setFlag(BuilderFlag::kERROR_ON_TIMING_CACHE_MISS);
}
if (!build.tf32)
{
config.clearFlag(BuilderFlag::kTF32);
}
if (build.refittable)
{
config.setFlag(BuilderFlag::kREFIT);
}
if (build.stripWeights)
{
// The kREFIT_IDENTICAL is enabled by default when kSTRIP_PLAN is on.
config.setFlag(BuilderFlag::kSTRIP_PLAN);
}
if (build.versionCompatible)
{
config.setFlag(BuilderFlag::kVERSION_COMPATIBLE);
}
std::vector<char const*> pluginPaths;
for (auto const& pluginPath : sys.setPluginsToSerialize)
{
sample::gLogVerbose << "Setting plugin to serialize: " << pluginPath << std::endl;
pluginPaths.push_back(pluginPath.c_str());
}
if (!pluginPaths.empty())
{
config.setPluginsToSerialize(pluginPaths.data(), pluginPaths.size());
}
if (build.excludeLeanRuntime)
{
config.setFlag(BuilderFlag::kEXCLUDE_LEAN_RUNTIME);
}
if (build.sparsity != SparsityFlag::kDISABLE)
{
config.setFlag(BuilderFlag::kSPARSE_WEIGHTS);
if (build.sparsity == SparsityFlag::kFORCE)
{
sparsify(network, sparseWeights);
}
}
if (build.enableMonitorMemory)
{
config.setFlag(BuilderFlag::kMONITOR_MEMORY);
}
if (build.distributiveIndependence)
{
config.setFlag(BuilderFlag::kDISTRIBUTIVE_INDEPENDENCE);
}
config.setProfilingVerbosity(build.profilingVerbosity);
config.setAvgTimingIterations(build.avgTiming);
if (build.directIO)
{
config.setFlag(BuilderFlag::kDIRECT_IO);
}
if (!build.layerDeviceTypes.empty())
{
setLayerDeviceTypes(network, config, build.layerDeviceTypes);
}
if (!build.decomposableAttentions.empty())
{
setDecomposables(network, build.decomposableAttentions);
}
if (!build.debugTensors.empty())
{
markDebugTensors(network, build.debugTensors);
}
if (build.markUnfusedTensorsAsDebugTensors)
{
network.markUnfusedTensorsAsDebugTensors();
}
if (build.safe && sys.DLACore == -1)
{
config.setEngineCapability(EngineCapability::kSAFETY);
}
if (sys.DLACore != -1)
{
if (sys.DLACore < builder.getNbDLACores())
{
config.setDefaultDeviceType(DeviceType::kDLA);
config.setDLACore(sys.DLACore);
if (build.buildDLAStandalone)
{
config.setEngineCapability(EngineCapability::kDLA_STANDALONE);
}
if (build.allowGPUFallback)
{
config.setFlag(BuilderFlag::kGPU_FALLBACK);
}
else
{
// Reformatting runs on GPU, so avoid I/O reformatting.
config.setFlag(BuilderFlag::kDIRECT_IO);
}
}
else
{
err << "Cannot create DLA engine, " << sys.DLACore << " not available" << std::endl;
return false;
}
}
if (build.enabledTactics || build.disabledTactics)
{
TacticSources tacticSources = config.getTacticSources();
tacticSources |= build.enabledTactics;
tacticSources &= ~build.disabledTactics;
config.setTacticSources(tacticSources);
}
config.setHardwareCompatibilityLevel(build.hardwareCompatibilityLevel);
config.setRuntimePlatform(build.runtimePlatform);
if (build.maxAuxStreams != defaultMaxAuxStreams)
{
config.setMaxAuxStreams(build.maxAuxStreams);
}
if (build.allowWeightStreaming)
{
config.setFlag(BuilderFlag::kWEIGHT_STREAMING);
}
if (!setupTilingSettings(build, config, err))
{
return false;
}
if (!build.remoteAutoTuningConfig.empty())
{
SMP_RETVAL_IF_FALSE(config.setRemoteAutoTuningConfig(build.remoteAutoTuningConfig.c_str()),
"Failed to set remote auto tuning config", false, err);
}
return true;
}
} // namespace
//! \brief Build a serialized engine in memory (as opposed to streaming to a file).
bool buildSerializedEngine(BuildOptions const& build, SystemOptions const& sys, IBuilder& builder,
INetworkDefinition& network, IBuilderConfig& config, BuildEnvironment& env, std::ostream& err)
{
IHostMemory* serializedEngine{nullptr};
if (build.safe && build.save && build.dumpKernelText)
{
IHostMemory* kernelText{nullptr};
serializedEngine = builder.buildSerializedNetwork(network, config, kernelText);
if (kernelText != nullptr && kernelText->size() > 0)
{
std::unique_ptr<IHostMemory> kernelTextPtr(kernelText);
env.kernelText.setBlob(kernelTextPtr);
sample::gLogInfo << "Created kernel CPP with size: " << (kernelText->size() / 1.0_MiB) << " MiB"
<< std::endl;
}
else
{
sample::gLogError << "Failed to create kernel CPP." << std::endl;
}
}
else
{
serializedEngine = builder.buildSerializedNetwork(network, config);
}
SMP_RETVAL_IF_FALSE(serializedEngine != nullptr, "Engine could not be created from network", false, err);
sample::gLogInfo << "Created engine with size: " << (serializedEngine->size() / 1.0_MiB) << " MiB" << std::endl;
if (build.safe && build.consistency)
{
std::vector<std::string> pluginBuildLibPaths;
#if ENABLE_UNIFIED_BUILDER
pluginBuildLibPaths.reserve(sys.safetyPlugins.size());
std::transform(sys.safetyPlugins.begin(), sys.safetyPlugins.end(), std::back_inserter(pluginBuildLibPaths),
[](auto const& sp) { return sp.libraryName; });
#endif
if (!checkSafeEngine(serializedEngine->data(), serializedEngine->size(), pluginBuildLibPaths))
{
return false;
}
}
std::unique_ptr<IHostMemory> serializedEnginePtr(serializedEngine);
env.engine.setBlob(serializedEnginePtr);
return true;
}
//!
//! \brief Create a serialized engine for a network definition
//!
//! \return Whether the engine creation succeeds or fails.
//!
bool networkToSerializedEngine(
BuildOptions const& build, SystemOptions const& sys, BuildEnvironment& env, std::ostream& err, PostConfigCallback const& postConfigHook)
{
IBuilder& builder = *env.builder;
IBuilderConfig& config = *env.builderConfig;
INetworkDefinition& network = *env.network;
std::vector<std::vector<int8_t>> sparseWeights;
SMP_RETVAL_IF_FALSE(setupNetworkAndConfig(build, sys, builder, network, config, err, sparseWeights),
"Network And Config setup failed", false, err);
if (postConfigHook)
{
postConfigHook(builder, config, build, sys);
}
std::unique_ptr<ITimingCache> const timingCache
= (!build.cpuOnly && build.timingCacheMode == TimingCacheMode::kGLOBAL)
?
// Try to load cache from file. Create a fresh cache if the file doesn't exist
samplesCommon::buildTimingCacheFromFile(gLogger.getTRTLogger(), config, build.timingCacheFile)
: nullptr;
// CUDA stream used for profiling by the builder.
auto profileStream = build.cpuOnly
? std::unique_ptr<cudaStream_t, decltype(samplesCommon::StreamDeleter)>{nullptr, samplesCommon::StreamDeleter}
: samplesCommon::makeCudaStream();
if (!build.cpuOnly)
{
SMP_RETVAL_IF_FALSE(profileStream != nullptr, "Cuda stream creation failed", false, err);
config.setProfileStream(*profileStream);
}
auto const tBegin = std::chrono::high_resolution_clock::now();
if (!(build.safe || build.buildDLAStandalone) && build.save)
{
auto const engineFile = build.engine;
FileStreamWriter writer(engineFile);
builder.buildSerializedNetworkToStream(network, config, writer);
auto const engineSize = writer.finalize();
std::vector<uint8_t> streamEngine(engineSize, 0);
std::ifstream reader(engineFile, std::ios::binary);
SMP_RETVAL_IF_FALSE((reader.is_open() && reader.good()), "Failed to open engine file for reading", false, err);
reader.read(reinterpret_cast<char*>(streamEngine.data()), engineSize);
SMP_RETVAL_IF_FALSE((!reader.fail()), "Error when reading engine file", false, err);
reader.close();
sample::gLogInfo << "Created engine with size: " << (engineSize / 1.0_MiB) << " MiB" << std::endl;
env.engine.setBlob(std::move(streamEngine));
}
else if (!buildSerializedEngine(build, sys, builder, network, config, env, err))
{
return false;
}
auto const tEnd = std::chrono::high_resolution_clock::now();
float const buildTime = std::chrono::duration<float>(tEnd - tBegin).count();
sample::gLogInfo << "Engine built in " << buildTime << " sec." << std::endl;
if (!build.cpuOnly && build.timingCacheMode == TimingCacheMode::kGLOBAL)
{
auto timingCache = config.getTimingCache();
samplesCommon::updateTimingCacheFile(gLogger.getTRTLogger(), build.timingCacheFile, timingCache, builder);
}
return true;
}
//!
//! \brief Parse a given model, create a network and an engine.
//!
bool modelToBuildEnv(
ModelOptions const& model, BuildOptions const& build, SystemOptions& sys, BuildEnvironment& env, std::ostream& err, PostConfigCallback const& postConfigHook)
{
env.builder.reset(createBuilder());
SMP_RETVAL_IF_FALSE(env.builder != nullptr, "Builder creation failed", false, err);
env.builderConfig.reset(env.builder->createBuilderConfig());
SMP_RETVAL_IF_FALSE(env.builderConfig != nullptr, "Builder config creation failed", false, err);
// Apply --setBuildRoute to pin the engine build to a specific knob configuration.
// This is the public reproducibility surface for tuning iterations.
// Gated by ENABLE_FEATURE_GLOBAL_PERF_TUNER because the underlying
// IBuilderConfig::setBuildRoute API is only declared when the feature is on.
if (!build.buildRoute.empty())
{
sample::gLogInfo << "Using tuning build route: " << build.buildRoute << std::endl;
SMP_RETVAL_IF_FALSE(env.builderConfig->setBuildRoute(build.buildRoute.c_str()),
"IBuilderConfig::setBuildRoute failed for: " + build.buildRoute, false, err);
}
env.builder->setErrorRecorder(&gRecorder);
auto networkFlags =
1U << static_cast<uint32_t>(nvinfer1::NetworkDefinitionCreationFlag::kSTRONGLY_TYPED);
for (auto const& pluginPath : sys.dynamicPlugins)
{
env.builder->getPluginRegistry().loadLibrary(pluginPath.c_str());
}
env.network.reset(env.builder->createNetworkV2(networkFlags));
std::vector<std::string> vcPluginLibrariesUsed;
SMP_RETVAL_IF_FALSE(env.network != nullptr, "Network creation failed", false, err);
env.parser
= modelToNetwork(model, build, *env.network, err, build.versionCompatible ? &vcPluginLibrariesUsed : nullptr, *env.builderConfig);
SMP_RETVAL_IF_FALSE(env.parser.operator bool(), "Parsing model failed", false, err);
if (build.versionCompatible && !sys.ignoreParsedPluginLibs && !vcPluginLibrariesUsed.empty())
{
sample::gLogInfo << "The following plugin libraries were identified by the parser as required for a "
"version-compatible engine:"
<< std::endl;
for (auto const& lib : vcPluginLibrariesUsed)
{
sample::gLogInfo << " " << lib << std::endl;
}
if (!build.excludeLeanRuntime)
{
sample::gLogInfo << "These libraries will be added to --setPluginsToSerialize since --excludeLeanRuntime "
"was not specified."
<< std::endl;
std::copy(vcPluginLibrariesUsed.begin(), vcPluginLibrariesUsed.end(),
std::back_inserter(sys.setPluginsToSerialize));
}
sample::gLogInfo << "These libraries will be added to --dynamicPlugins for use at inference time." << std::endl;
std::copy(vcPluginLibrariesUsed.begin(), vcPluginLibrariesUsed.end(), std::back_inserter(sys.dynamicPlugins));
// Implicitly-added plugins from ONNX parser should be loaded into plugin registry as well.
for (auto const& pluginPath : vcPluginLibrariesUsed)
{
env.builder->getPluginRegistry().loadLibrary(pluginPath.c_str());
}
sample::gLogInfo << "Use --ignoreParsedPluginLibs to disable this behavior." << std::endl;
}
SMP_RETVAL_IF_FALSE(
networkToSerializedEngine(build, sys, env, err, postConfigHook), "Building engine failed", false, err);
return true;
}
namespace
{
std::pair<std::vector<std::string>, std::vector<WeightsRole>> getLayerWeightsRolePair(IRefitter& refitter)
{
// Get number of refittable items.
auto const nbAll = refitter.getAll(0, nullptr, nullptr);
std::vector<char const*> layerNames(nbAll);
// Allocate buffers for the items and get them.
std::vector<nvinfer1::WeightsRole> weightsRoles(nbAll);
refitter.getAll(nbAll, layerNames.data(), weightsRoles.data());
std::vector<std::string> layerNameStrs(nbAll);
std::transform(layerNames.begin(), layerNames.end(), layerNameStrs.begin(), [](char const* name) {
if (name == nullptr)
{
return std::string{};
}
return std::string{name};
});
return {layerNameStrs, weightsRoles};
}
std::pair<std::vector<std::string>, std::vector<WeightsRole>> getMissingLayerWeightsRolePair(IRefitter& refitter)
{
// Get number of refittable items.
auto const nbMissing = refitter.getMissing(0, nullptr, nullptr);
std::vector<char const*> layerNames(nbMissing);
// Allocate buffers for the items and get them.
std::vector<nvinfer1::WeightsRole> weightsRoles(nbMissing);
refitter.getMissing(nbMissing, layerNames.data(), weightsRoles.data());
// Convert null names in `layerNames` to empty strings:
std::vector<std::string> layerNameStrs(nbMissing);
std::transform(layerNames.begin(), layerNames.end(), layerNameStrs.begin(), [](char const* name) {
if (name == nullptr)
{
return std::string{};
}
return std::string{name};
});
return {std::move(layerNameStrs), std::move(weightsRoles)};
}
} // namespace
bool loadStreamingEngineToBuildEnv(std::string const& filepath, BuildEnvironment& env, std::ostream& err)
{
auto& reader = env.engine.getAsyncFileReader();
SMP_RETVAL_IF_FALSE(reader.open(filepath), "", false, err << "Error opening engine file: " << filepath);
return true;
}
bool loadAsyncStreamingEngineToBuildEnv(std::string const& filepath, BuildEnvironment& env, std::ostream& err)
{
auto& asyncReader = env.engine.getAsyncFileReader();
SMP_RETVAL_IF_FALSE(asyncReader.open(filepath), "", false, err << "Error opening engine file: " << filepath);
return true;
}
bool loadEngineToBuildEnv(std::string const& filepath, BuildEnvironment& env, std::ostream& err,
SystemOptions const& sys, bool const enableConsistency)
{
auto const tBegin = std::chrono::high_resolution_clock::now();
std::ifstream engineFile(filepath, std::ios::binary);
SMP_RETVAL_IF_FALSE(engineFile.good(), "", false, err << "Error opening engine file: " << filepath);
engineFile.seekg(0, std::ifstream::end);
int64_t fsize = engineFile.tellg();
engineFile.seekg(0, std::ifstream::beg);
std::vector<uint8_t> engineBlob(fsize);
engineFile.read(reinterpret_cast<char*>(engineBlob.data()), fsize);
SMP_RETVAL_IF_FALSE(engineFile.good(), "", false, err << "Error loading engine file: " << filepath);
auto const tEnd = std::chrono::high_resolution_clock::now();
float const loadTime = std::chrono::duration<float>(tEnd - tBegin).count();
sample::gLogInfo << "Engine loaded in " << loadTime << " sec." << std::endl;
sample::gLogInfo << "Loaded engine with size: " << (fsize / 1.0_MiB) << " MiB" << std::endl;
if (enableConsistency)
{
std::vector<std::string> pluginBuildLibPaths;
#if ENABLE_UNIFIED_BUILDER
pluginBuildLibPaths.reserve(sys.safetyPlugins.size());
std::transform(sys.safetyPlugins.begin(), sys.safetyPlugins.end(), std::back_inserter(pluginBuildLibPaths),
[](auto const& sp) { return sp.libraryName; });
#endif
if (!checkSafeEngine(engineBlob.data(), fsize, pluginBuildLibPaths))
{
sample::gLogError << "Consistency validation is not enabled." << std::endl;
return false;
}
}
env.engine.setBlob(std::move(engineBlob));
return true;
}
bool printPlanVersion(BuildEnvironment& env, std::ostream& err)
{
constexpr int64_t kPLAN_SIZE{28};
std::vector<uint8_t> data(kPLAN_SIZE);
auto blob = data.data();
auto& asyncReader = env.engine.getAsyncFileReader();
if (asyncReader.isOpen())
{
SMP_RETVAL_IF_FALSE(asyncReader.read(data.data(), kPLAN_SIZE, cudaStream_t{}) == kPLAN_SIZE,
"Failed to read plan file", false, err);
}
else
{
SMP_RETVAL_IF_FALSE(env.engine.getBlob().data != nullptr, "Plan file is empty", false, err);
SMP_RETVAL_IF_FALSE(env.engine.getBlob().size >= 28, "Plan file is incorrect", false, err);
blob = static_cast<uint8_t*>(env.engine.getBlob().data);
}
auto blob32 = reinterpret_cast<uint32_t*>(blob);
//! Correct TensorRT plan file starts with this tag
constexpr uint32_t kPLAN_FILE_TAG{0x74727466U};
SMP_RETVAL_IF_FALSE(blob32[0] == kPLAN_FILE_TAG, "Failed to verify a plan tag.", false, err);
switch (blob32[1])
{
case 0U:
{
// Blob index to store the plan version may depend on the serialization version.
sample::gLogInfo << "Plan was created with TensorRT version " << static_cast<int32_t>(blob[24])
<< "." << static_cast<int32_t>(blob[25]) << "." << static_cast<int32_t>(blob[26])
<< "." << static_cast<int32_t>(blob[27]) << std::endl;
return true;
}
}
sample::gLogError << "Serialization version is not supported." << std::endl;
return false;
}
void dumpRefittable(nvinfer1::ICudaEngine& engine)
{
std::unique_ptr<IRefitter> refitter{createRefitter(engine)};
if (refitter == nullptr)
{
sample::gLogError << "Failed to create a refitter." << std::endl;
return;
}
auto const& layerWeightsRolePair = getLayerWeightsRolePair(*refitter);
auto const& layerNames = layerWeightsRolePair.first;
auto const& weightsRoles = layerWeightsRolePair.second;
auto const nbAll = layerWeightsRolePair.first.size();
for (size_t i = 0; i < nbAll; ++i)
{
sample::gLogInfo << layerNames[i] << " " << weightsRoles[i] << std::endl;
}
}
ICudaEngine* loadEngine(std::string const& engine, int32_t DLACore, std::ostream& err)
{
BuildEnvironment env(/* isSafe */ false, /* versionCompatible */ false, DLACore, "", getTempfileControlDefaults());
SystemOptions sys;
if (!loadEngineToBuildEnv(engine, env, err, sys, false))
{
return nullptr;
}
// Trigger deserialization before releasing ownership
if (env.engine.get() == nullptr)
{
return nullptr;
}
return env.engine.release();
}
bool saveEngine(ICudaEngine const& engine, std::string const& fileName, std::ostream& err)
{
std::ofstream engineFile(fileName, std::ios::binary);
if (!engineFile)
{
err << "Cannot open engine file: " << fileName << std::endl;
return false;
}
std::unique_ptr<IHostMemory> serializedEngine{engine.serialize()};
if (serializedEngine == nullptr)
{
err << "Engine serialization failed" << std::endl;
return false;
}
engineFile.write(static_cast<char*>(serializedEngine->data()), serializedEngine->size());
return !engineFile.fail();
}
// NOLINTNEXTLINE(readability-function-cognitive-complexity)
bool getEngineBuildEnv(
ModelOptions const& model, BuildOptions const& build, SystemOptions& sys, BuildEnvironment& env, std::ostream& err, PostConfigCallback const& postConfigHook)
{
bool createEngineSuccess{false};
if (build.load)
{
if (build.safe)
{
createEngineSuccess = loadEngineToBuildEnv(build.engine, env, err, sys, build.safe && build.consistency);
}
else
{
if (build.asyncFileReader)
{
createEngineSuccess = loadAsyncStreamingEngineToBuildEnv(build.engine, env, err);
}
else
{
createEngineSuccess = loadStreamingEngineToBuildEnv(build.engine, env, err);
}
}
}
else
{
createEngineSuccess = modelToBuildEnv(model, build, sys, env, err, postConfigHook);
}
SMP_RETVAL_IF_FALSE(createEngineSuccess, "Failed to create engine from model or file.", false, err);
if (build.getPlanVersionOnly && build.load)
{
SMP_RETVAL_IF_FALSE(printPlanVersion(env, err), "Failed to get plan file version.", false, err);
return true;
}
if (build.save)
{
std::ofstream engineFile(build.engine, std::ios::binary);
auto& engineBlob = env.engine.getBlob();
engineFile.write(static_cast<char const*>(engineBlob.data), engineBlob.size);
SMP_RETVAL_IF_FALSE(!engineFile.fail(), "Saving engine to file failed.", false, err);
engineFile.flush();
engineFile.close();
if (!build.safe)
{
env.engine.releaseBlob();
if (build.asyncFileReader)
{
SMP_RETVAL_IF_FALSE(loadAsyncStreamingEngineToBuildEnv(build.engine, env, err),
"Reading engine file via async stream reader failed.", false, err);
}
else
{
SMP_RETVAL_IF_FALSE(loadStreamingEngineToBuildEnv(build.engine, env, err),
"Reading engine file via stream reader failed.", false, err);
}
}
if (build.safe && build.dumpKernelText)
{
auto const engineTextFileName = build.engine + ".txt";
auto const kernelTextBlob = env.kernelText.getBlobOrEmpty();
if (kernelTextBlob.data != nullptr && kernelTextBlob.size > 0)
{
std::ofstream engineTextFile(engineTextFileName);
engineTextFile.write(static_cast<char const*>(kernelTextBlob.data), kernelTextBlob.size);
SMP_RETVAL_IF_FALSE(!engineTextFile.fail(), "Saving engine kernel text to file failed.", false, err);
engineTextFile.close();
}
else
{
sample::gLogWarning << "Kernel text was not produced; skipping dump to " << engineTextFileName
<< std::endl;
}
}
}
return true;
}
// There is not a getWeightsName API, so we need to use WeightsRole.
std::vector<std::pair<WeightsRole, Weights>> getAllRefitWeightsForLayer(ILayer const& l)
{
switch (l.getType())
{
case LayerType::kCONSTANT:
{
auto const& layer = static_cast<nvinfer1::IConstantLayer const&>(l);
auto const weights = layer.getWeights();
switch (weights.type)
{
case DataType::kFLOAT:
case DataType::kHALF:
case DataType::kBF16:
case DataType::kINT8:
case DataType::kINT32:
case DataType::kINT64: return {std::make_pair(WeightsRole::kCONSTANT, weights)};
case DataType::kBOOL:
case DataType::kUINT8:
case DataType::kFP8:
case DataType::kINT4:
case DataType::kFP4:
case DataType::kE8M0:
// Refit not supported for these types.
break;
}
break;
}
case LayerType::kCONVOLUTION:
{
auto const& layer = static_cast<nvinfer1::IConvolutionLayer const&>(l);
return {std::make_pair(WeightsRole::kKERNEL, layer.getKernelWeights()),
std::make_pair(WeightsRole::kBIAS, layer.getBiasWeights())};
}
case LayerType::kDECONVOLUTION:
{
auto const& layer = static_cast<nvinfer1::IDeconvolutionLayer const&>(l);
return {std::make_pair(WeightsRole::kKERNEL, layer.getKernelWeights()),
std::make_pair(WeightsRole::kBIAS, layer.getBiasWeights())};
}
case LayerType::kSCALE:
{
auto const& layer = static_cast<nvinfer1::IScaleLayer const&>(l);
return {std::make_pair(WeightsRole::kSCALE, layer.getScale()),
std::make_pair(WeightsRole::kSHIFT, layer.getShift())};
}
case LayerType::kACTIVATION:
case LayerType::kATTENTION_INPUT:
case LayerType::kATTENTION_OUTPUT:
case LayerType::kASSERTION:
case LayerType::kCAST:
case LayerType::kCONCATENATION:
case LayerType::kCONDITION:
case LayerType::kCONDITIONAL_INPUT:
case LayerType::kCONDITIONAL_OUTPUT:
case LayerType::kCUMULATIVE:
case LayerType::kDEQUANTIZE:
case LayerType::kDIST_COLLECTIVE:
case LayerType::kDYNAMIC_QUANTIZE:
case LayerType::kEINSUM:
case LayerType::kELEMENTWISE:
case LayerType::kFILL:
case LayerType::kGATHER:
case LayerType::kGRID_SAMPLE:
case LayerType::kIDENTITY:
case LayerType::kITERATOR:
case LayerType::kKVCACHE_UPDATE:
case LayerType::kLOOP_OUTPUT:
case LayerType::kLRN:
case LayerType::kMATRIX_MULTIPLY:
case LayerType::kMOE:
case LayerType::kNMS:
case LayerType::kNON_ZERO:
case LayerType::kNORMALIZATION:
case LayerType::kONE_HOT:
case LayerType::kPADDING:
case LayerType::kPARAMETRIC_RELU:
case LayerType::kPLUGIN:
case LayerType::kPLUGIN_V2:
case LayerType::kPLUGIN_V3:
case LayerType::kPOOLING:
case LayerType::kQUANTIZE:
case LayerType::kRAGGED_SOFTMAX:
case LayerType::kRECURRENCE:
case LayerType::kREDUCE:
case LayerType::kRESIZE:
case LayerType::kREVERSE_SEQUENCE:
case LayerType::kROTARY_EMBEDDING:
case LayerType::kSCATTER:
case LayerType::kSELECT:
case LayerType::kSHAPE:
case LayerType::kSHUFFLE:
case LayerType::kSLICE:
case LayerType::kSOFTMAX:
case LayerType::kSQUEEZE:
case LayerType::kTOPK:
case LayerType::kTRIP_LIMIT:
case LayerType::kUNARY:
case LayerType::kUNSQUEEZE: return {};
}
return {};
}
bool refitFromOnnx(nvinfer1::ICudaEngine& engine, std::string onnxModelFile, bool multiThreading)
{
sample::gLogInfo << "Refitting engine from ONNX model " << onnxModelFile << std::endl;
std::unique_ptr<IRefitter> refitter{createRefitter(engine)};
if (multiThreading && !refitter->setMaxThreads(10))
{
sample::gLogError << "Failed to set max threads to refitter." << std::endl;
return false;
}
std::unique_ptr<nvonnxparser::IParserRefitter> parserRefitter{createONNXRefitter(*refitter)};
if (!parserRefitter->refitFromFile(onnxModelFile.c_str()))
{
return false;
}
TrtCudaStream stream;
if (!refitter->refitCudaEngineAsync(stream.get()))
{
return false;
}
stream.synchronize();
sample::gLogInfo << "Engine successfully refitted from ONNX model " << onnxModelFile << std::endl;
return true;
}
bool timeRefit(INetworkDefinition const& network, nvinfer1::ICudaEngine& engine, bool multiThreading)
{
using time_point = std::chrono::time_point<std::chrono::steady_clock>;
using durationMs = std::chrono::duration<float, std::milli>;
auto const nbLayers = network.getNbLayers();
std::unique_ptr<IRefitter> refitter{createRefitter(engine)};
// Set max threads that can be used by refitter.
if (multiThreading && !refitter->setMaxThreads(10))
{
sample::gLogError << "Failed to set max threads to refitter." << std::endl;
return false;
}
auto const& layerWeightsRolePair = getLayerWeightsRolePair(*refitter);
// We use std::string instead of char const* since we can have copies of layer names.
std::set<std::pair<std::string, WeightsRole>> layerRoleSet;
auto const& layerNames = layerWeightsRolePair.first;
auto const& weightsRoles = layerWeightsRolePair.second;
std::transform(layerNames.begin(), layerNames.end(), weightsRoles.begin(),
std::inserter(layerRoleSet, layerRoleSet.begin()),
[](std::string const& layerName, WeightsRole const role) { return std::make_pair(layerName, role); });
auto const isRefittable = [&layerRoleSet](char const* layerName, WeightsRole const role) {
return layerRoleSet.find(std::make_pair(layerName, role)) != layerRoleSet.end();
};
auto const setWeights = [&] {
for (int32_t i = 0; i < nbLayers; i++)
{
auto const layer = network.getLayer(i);
auto const roleWeightsVec = getAllRefitWeightsForLayer(*layer);
for (auto const& roleWeights : roleWeightsVec)
{
if (isRefittable(layer->getName(), roleWeights.first))
{
bool const success = refitter->setWeights(layer->getName(), roleWeights.first, roleWeights.second);
if (!success)
{
return false;
}
}
}
}
return true;
};
auto const reportMissingWeights = [&] {
auto const& missingPair = getMissingLayerWeightsRolePair(*refitter);
auto const& layerNames = missingPair.first;
auto const& weightsRoles = missingPair.second;
for (size_t i = 0; i < layerNames.size(); ++i)
{
sample::gLogError << "Missing (" << layerNames[i] << ", " << weightsRoles[i] << ") for refitting."
<< std::endl;
}
return layerNames.empty();
};
// Skip weights validation since we are confident that the new weights are similar to the weights used to build
// engine.
refitter->setWeightsValidation(false);
// Warm up and report missing weights
// We only need to set weights for the first time and that can be reused in later refitting process.
bool const success = setWeights() && reportMissingWeights() && refitter->refitCudaEngine();
if (!success)
{
return false;
}
TrtCudaStream stream;
constexpr int32_t kLOOP = 10;
time_point const refitStartTime{std::chrono::steady_clock::now()};
{
for (int32_t l = 0; l < kLOOP; l++)
{
if (!refitter->refitCudaEngineAsync(stream.get()))
{
return false;
}
}
}
stream.synchronize();
time_point const refitEndTime{std::chrono::steady_clock::now()};
sample::gLogInfo << "Engine refitted"
<< " in " << durationMs(refitEndTime - refitStartTime).count() / kLOOP << " ms." << std::endl;
return true;
}
namespace
{
#if !defined(_WIN32)
//! A function-object that calls `dlclose(handle)`.
struct DllDeleter
{
void operator()(void* handle) const noexcept
{
dlclose(handle);
}
};
//! If available, \return std::unique_ptr<void, DllDeleter>{dlopen(dllName, nonSanitizerFlags)} unless SANITIZER_BUILD,
//! in which case dlopen with `RTLD_LAZY | RTLD_NODELETE` flags.
[[nodiscard]] auto doDlopen(char const* dllName, int32_t nonSanitizerFlags)
{
auto flags = nonSanitizerFlags;
#if SANITIZER_BUILD
// Sanitizer builds override the flags:
flags = RTLD_LAZY | RTLD_NODELETE;
#endif // SANITIZER_BUILD
return std::unique_ptr<void, DllDeleter>{dlopen(dllName, flags)};
}
[[nodiscard]] auto initSafeRuntime()
{
// Currently libnvinfer_safe_debug.so for samplesCommon::isDebug() is not ready.
return doDlopen("libnvinfer_safe.so", RTLD_LAZY | RTLD_GLOBAL);
}
[[nodiscard]] auto initConsistencyCheckerLibrary()
{
return doDlopen("libnvinfer_checker_shared.so", RTLD_LAZY);
}
static auto const kSAFE_RUNTIME_LIBRARY{initSafeRuntime()};
static auto const kCONSISTENCY_CHECKER_LIBRARY{initConsistencyCheckerLibrary()};
#else
static constexpr auto kSAFE_RUNTIME_LIBRARY = nullptr;
static constexpr auto kCONSISTENCY_CHECKER_LIBRARY = nullptr;
#endif // !defined(_WIN32)
} // namespace
#if ENABLE_UNIFIED_BUILDER
std::unique_ptr<nvinfer2::safe::consistency::IConsistencyChecker> createConsistencyChecker(
sample::SampleSafeRecorder& recorder, void const* serializedEngine, int32_t const engineSize,
std::vector<std::string> const& pluginBuildLibPath) noexcept
{
if (serializedEngine == nullptr || engineSize == 0)
{
return nullptr;
}
#if !defined(_WIN32)
if (hasSafeRuntime())
{
constexpr char symbolName[] = "createConsistencyChecker";
using CreateCheckerFn = ErrorCode (*)(nvinfer2::safe::consistency::IConsistencyChecker*& checker,
sample::SampleSafeRecorder& recorder, void const* data, size_t size,
std::vector<std::string> const& pluginBuildLibPath);
if (auto const createFn
= reinterpret_cast<CreateCheckerFn>(dlsym(kCONSISTENCY_CHECKER_LIBRARY.get(), symbolName)))
{
if (nvinfer2::safe::consistency::IConsistencyChecker * checker{nullptr};
ErrorCode::kSUCCESS == createFn(checker, recorder, serializedEngine, engineSize, pluginBuildLibPath))
{
return std::unique_ptr<nvinfer2::safe::consistency::IConsistencyChecker>{checker};
}
}
}
#endif
return nullptr;
}
#endif
bool hasSafeRuntime()
{
return kSAFE_RUNTIME_LIBRARY != nullptr;
}
bool hasConsistencyChecker()
{
return kCONSISTENCY_CHECKER_LIBRARY != nullptr;
}
bool checkSafeEngine(
void const* serializedEngine, int64_t const engineSize, std::vector<std::string> const& pluginBuildLibPath)
{
#if !ENABLE_UNIFIED_BUILDER
return false;
#else
if (!hasConsistencyChecker())
{
sample::gLogError << "Cannot perform consistency check because the checker is not loaded." << std::endl;
return false;
}
sample::SampleSafeRecorder recorder{nvinfer2::safe::Severity::kINFO};
std::unique_ptr<nvinfer2::safe::consistency::IConsistencyChecker> checker
= createConsistencyChecker(recorder, serializedEngine, engineSize, pluginBuildLibPath);
if (checker == nullptr)
{
sample::gLogError << "Failed to create consistency checker." << std::endl;
return false;
}
sample::gLogInfo << "Start consistency checking." << std::endl;
if (!checker->validate())
{
sample::gLogError << "Consistency validation failed." << std::endl;
return false;
}
sample::gLogInfo << "Consistency validation passed." << std::endl;
return true;
#endif
}
} // namespace sample