1 //
2 // Copyright © 2017 Arm Ltd. All rights reserved.
3 // SPDX-License-Identifier: MIT
4 //
5
6 #include "../TestUtils.hpp"
7
8 #include <Optimizer.hpp>
9 #include <Half.hpp>
10
11 #include <boost/test/unit_test.hpp>
12
13 using namespace armnn;
14
15 BOOST_AUTO_TEST_SUITE(Optimizer)
16 using namespace armnn::optimizations;
17
BOOST_AUTO_TEST_CASE(ConvertConstantsFloatToHalfTest)18 BOOST_AUTO_TEST_CASE(ConvertConstantsFloatToHalfTest)
19 {
20 armnn::Graph graph;
21
22 const armnn::TensorInfo info({ 1, 1, 1, 2 }, armnn::DataType::Float16);
23
24 // Create const tensor from fp32 data
25 unsigned int dims[] = { 4, 1, 1, 1 };
26 std::vector<float> floatWeights{ 1.0f, 2.0f, 3.0f, 4.0f };
27 armnn::ConstTensor weights(armnn::TensorInfo(4, dims, armnn::DataType::Float32), floatWeights);
28
29 // Create simple test network
30 auto input = graph.AddLayer<armnn::InputLayer>(0, "input");
31 input->GetOutputSlot().SetTensorInfo(info);
32
33 auto fc = graph.AddLayer<armnn::FullyConnectedLayer>(armnn::FullyConnectedDescriptor(), "fc");
34 fc->m_Weight = std::make_unique<armnn::ScopedCpuTensorHandle>(weights);
35 fc->GetOutputSlot().SetTensorInfo(info);
36
37 auto output = graph.AddLayer<armnn::OutputLayer>(1, "output");
38
39 // Connect up the layers
40 input->GetOutputSlot().Connect(fc->GetInputSlot(0));
41 fc->GetOutputSlot().Connect(output->GetInputSlot(0));
42
43 // Check tensor data type before conversion
44 BOOST_CHECK(fc->m_Weight->GetTensorInfo().GetDataType() == armnn::DataType::Float32);
45
46 // Run the optimizer
47 armnn::Optimizer::Pass(graph, armnn::MakeOptimizations(ConvertConstantsFloatToHalf()));
48
49 // Check tensor data type after conversion
50 BOOST_CHECK(fc->m_Weight->GetTensorInfo().GetDataType() == armnn::DataType::Float16);
51
52 // Check whether data matches expected fp16 data
53 Half* data = fc->m_Weight->GetTensor<Half>();
54 BOOST_CHECK(data[0] == Half(1.0f));
55 BOOST_CHECK(data[1] == Half(2.0f));
56 BOOST_CHECK(data[2] == Half(3.0f));
57 BOOST_CHECK(data[3] == Half(4.0f));
58 }
59
60 BOOST_AUTO_TEST_SUITE_END()