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/*
* Copyright (C) 2020 The Android Open Source Project
*
* 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.
*/
#define LOG_TAG "Telemetry"
#include "Telemetry.h"
#include <algorithm>
#include <limits>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "Manager.h"
#include "NeuralNetworks.h"
#include "Tracing.h"
#if defined(__ANDROID__) && !defined(NN_COMPATIBILITY_LIBRARY_BUILD)
#include "TelemetryStatsd.h"
#endif // defined(__ANDROID__) && !defined(NN_COMPATIBILITY_LIBRARY_BUILD)
namespace android::nn::telemetry {
namespace {
constexpr uint64_t kNoTimeReported = std::numeric_limits<uint64_t>::max();
std::function<void(const DiagnosticCompilationInfo*)> gCompilationCallback;
std::function<void(const DiagnosticExecutionInfo*)> gExecutionCallback;
std::atomic_bool gLoggingCallbacksSet = false;
// Convert list of Device object into a single string with all
// identifiers, sorted by name in form of "name1=version1,name2=version2,..."
std::string makeDeviceId(const std::vector<std::shared_ptr<Device>>& devices) {
// Sort device identifiers in alphabetical order
std::vector<std::string> names;
names.reserve(devices.size());
size_t totalSize = 0;
for (size_t i = 0; i < devices.size(); ++i) {
if (!names.empty()) {
totalSize++;
}
names.push_back(devices[i]->getName() + "=" + devices[i]->getVersionString());
totalSize += names.back().size();
}
sort(names.begin(), names.end());
// Concatenate them
std::string result;
result.reserve(totalSize);
for (auto& name : names) {
if (!result.empty()) {
result += ',';
}
result += name;
}
return result;
}
// Generate logging session identifier based on millisecond timestamp and pid
int32_t generateSessionId() {
auto now = std::chrono::system_clock::now();
auto duration = now.time_since_epoch();
// Taking millisecond timestamp and pid modulo a large prime to make the id less identifiable,
// but still unique within the device scope.
auto timestamp = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count();
return (getpid() * 123 + timestamp) % 999983;
}
// Operand type to atom datatype
DataClass operandToDataClass(const OperandType& op) {
switch (op) {
case OperandType::TENSOR_FLOAT32:
return DataClass::FLOAT32;
case OperandType::TENSOR_FLOAT16:
return DataClass::FLOAT16;
case OperandType::TENSOR_QUANT8_ASYMM:
case OperandType::TENSOR_QUANT16_SYMM:
case OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL:
case OperandType::TENSOR_QUANT16_ASYMM:
case OperandType::TENSOR_QUANT8_SYMM:
case OperandType::TENSOR_QUANT8_ASYMM_SIGNED:
return DataClass::QUANT;
default:
// we ignore operand of other types
return DataClass::OTHER;
}
}
// Evaluate a coarse category of model inputs
DataClass evalInputDataClass(const ModelBuilder* m) {
DataClass result = DataClass::UNKNOWN;
for (size_t i = 0; i < m->inputCount(); i++) {
result = evalDataClass(m->getInputOperand(i).type, result);
}
return result;
}
// Evaluate a coarse category of model outputs
DataClass evalOutputDataClass(const ModelBuilder* m) {
DataClass result = DataClass::UNKNOWN;
for (size_t i = 0; i < m->outputCount(); i++) {
result = evalDataClass(m->getOutputOperand(i).type, result);
}
return result;
}
} // namespace
// Infer a data class from an operand type. Call iteratievly on operands set, previousDataClass is
// result of evalDataClass evaluation on previous operands or DataClass::UNKNOWN value if called on
// first operand
DataClass evalDataClass(const OperandType& op, DataClass previousDataClass) {
DataClass operandClass = operandToDataClass(op);
if (operandClass == DataClass::OTHER) {
if (previousDataClass == DataClass::UNKNOWN) {
return operandClass;
}
return previousDataClass;
}
if (previousDataClass == DataClass::UNKNOWN || previousDataClass == DataClass::OTHER) {
return operandClass;
} else if (operandClass != previousDataClass) {
return DataClass::MIXED;
}
return operandClass;
}
// Generate and store session identifier
int32_t getSessionId() {
static int32_t ident = generateSessionId();
return ident;
}
void onCompilationFinish(CompilationBuilder* c, int resultCode) {
NNTRACE_RT(NNTRACE_PHASE_UNSPECIFIED, "onCompilationFinish");
// Allow to emit even only if compilation was finished
if (!c->isFinished()) {
LOG(ERROR) << "telemetry::onCompilationFinish called on unfinished compilation";
return;
}
const bool loggingCallbacksSet = gLoggingCallbacksSet;
if (!loggingCallbacksSet && !DeviceManager::get()->isPlatformTelemetryEnabled()) {
return;
}
const DiagnosticCompilationInfo info{
.modelArchHash = c->getModel()->getModelArchHash(),
.deviceId = makeDeviceId(c->getDevices()),
.errorCode = resultCode,
.inputDataClass = evalInputDataClass(c->getModel()),
.outputDataClass = evalOutputDataClass(c->getModel()),
.compilationTimeNanos = c->getTelemetryInfo()->compilationTimeNanos,
.fallbackToCpuFromError = c->getTelemetryInfo()->fallbackToCpuFromError,
.introspectionEnabled = c->createdWithExplicitDeviceList(),
.cacheEnabled = c->isCacheInfoProvided(),
.hasControlFlow = c->getModel()->hasControlFlow(),
.hasDynamicTemporaries = c->hasDynamicTemporaries(),
};
#if defined(__ANDROID__) && !defined(NN_COMPATIBILITY_LIBRARY_BUILD)
if (DeviceManager::get()->isPlatformTelemetryEnabled()) {
logCompilationToStatsd(&info);
}
#endif // defined(__ANDROID__) && !defined(NN_COMPATIBILITY_LIBRARY_BUILD)
if (loggingCallbacksSet) {
gCompilationCallback(&info);
}
}
void onExecutionFinish(ExecutionBuilder* e, ExecutionMode executionMode, int resultCode) {
NNTRACE_RT(NNTRACE_PHASE_UNSPECIFIED, "onExecutionFinish");
// Allow to emit even only if execution was finished
if (!e->completed()) {
LOG(ERROR) << "telemetry::onExecutionFinish called on unfinished execution";
return;
}
const bool loggingCallbacksSet = gLoggingCallbacksSet;
if (!loggingCallbacksSet && !DeviceManager::get()->isPlatformTelemetryEnabled()) {
return;
}
auto compilation = e->getCompilation();
uint64_t duration_driver_ns = kNoTimeReported;
uint64_t duration_hardware_ns = kNoTimeReported;
uint64_t duration_runtime_ns = kNoTimeReported;
if (e->measureTiming()) {
e->getDuration(ANEURALNETWORKS_DURATION_ON_HARDWARE, &duration_hardware_ns);
e->getDuration(ANEURALNETWORKS_DURATION_IN_DRIVER, &duration_driver_ns);
}
// Ignore runtime execution time if the call was async with dependencies, because waiting for
// the result may have been much later than when the execution actually finished.
if (executionMode != ExecutionMode::ASYNC_WITH_DEPS) {
duration_runtime_ns = TimeNanoMeasurer::currentDuration(e->getComputeStartTimePoint());
}
const DiagnosticExecutionInfo info{
.modelArchHash = e->getModel()->getModelArchHash(),
.deviceId = makeDeviceId(compilation->getDevices()),
.executionMode = executionMode,
.inputDataClass = evalInputDataClass(e->getModel()),
.outputDataClass = evalOutputDataClass(e->getModel()),
.errorCode = resultCode,
.durationRuntimeNanos = duration_runtime_ns,
.durationDriverNanos = duration_driver_ns,
.durationHardwareNanos = duration_hardware_ns,
.introspectionEnabled = compilation->createdWithExplicitDeviceList(),
.cacheEnabled = compilation->isCacheInfoProvided(),
.hasControlFlow = compilation->getModel()->hasControlFlow(),
.hasDynamicTemporaries = compilation->hasDynamicTemporaries(),
};
#if defined(__ANDROID__) && !defined(NN_COMPATIBILITY_LIBRARY_BUILD)
if (DeviceManager::get()->isPlatformTelemetryEnabled()) {
logExecutionToStatsd(&info);
}
#endif // defined(__ANDROID__) && !defined(NN_COMPATIBILITY_LIBRARY_BUILD)
if (loggingCallbacksSet) {
gExecutionCallback(&info);
}
}
void registerTelemetryCallbacks(std::function<void(const DiagnosticCompilationInfo*)> compilation,
std::function<void(const DiagnosticExecutionInfo*)> execution) {
gCompilationCallback = std::move(compilation);
gExecutionCallback = std::move(execution);
gLoggingCallbacksSet = true;
}
void clearTelemetryCallbacks() {
gLoggingCallbacksSet = false;
}
} // namespace android::nn::telemetry