Method infer

samples/sampleOnnxMNIST/sampleOnnxMNIST.cpp:221–258

\brief Runs the TensorRT inference engine for this sample \details This function is the main execution function of the sample. It allocates the buffer, sets inputs and executes the engine.

//!          sets inputs and executes the engine.
//!
bool SampleOnnxMNIST::infer()
{
    // Create RAII buffer manager object
    samplesCommon::BufferManager buffers(mEngine);

    auto context = SampleUniquePtr<nvinfer1::IExecutionContext>(mEngine->createExecutionContext());
    if (!context)
    {
        return false;
    }

    // Read the input data into the managed buffers
    ASSERT(mParams.inputTensorNames.size() == 1);
    if (!processInput(buffers))
    {
        return false;
    }

    // Memcpy from host input buffers to device input buffers
    buffers.copyInputToDevice();

    bool status = context->executeV2(buffers.getDeviceBindings().data());
    if (!status)
    {
        return false;
    }

    // Memcpy from device output buffers to host output buffers
    buffers.copyOutputToHost();

    // Verify results
    if (!verifyOutput(buffers))
    {
        return false;
    }

    return true;
}

//!
//! \brief Reads the input and stores the result in a managed buffer