Teresa Charlin | b2d3ec5 | 2022-04-12 22:07:09 +0100 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2022 Arm Ltd and Contributors. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #include "RefGatherNdWorkload.hpp" |
| 7 | |
| 8 | #include "Gather.hpp" |
| 9 | #include "Profiling.hpp" |
| 10 | #include "RefWorkloadUtils.hpp" |
| 11 | #include "backendsCommon/WorkloadUtils.hpp" |
| 12 | |
| 13 | namespace armnn |
| 14 | { |
| 15 | |
| 16 | void RefGatherNdWorkload::Execute() const |
| 17 | { |
| 18 | Execute(m_Data.m_Inputs, m_Data.m_Outputs); |
| 19 | } |
| 20 | |
Matthew Sloyan | 21a6a1a | 2022-06-30 17:13:04 +0100 | [diff] [blame] | 21 | void RefGatherNdWorkload::ExecuteAsync(ExecutionData& executionData) |
Teresa Charlin | b2d3ec5 | 2022-04-12 22:07:09 +0100 | [diff] [blame] | 22 | { |
Matthew Sloyan | 21a6a1a | 2022-06-30 17:13:04 +0100 | [diff] [blame] | 23 | WorkingMemDescriptor* workingMemDescriptor = static_cast<WorkingMemDescriptor*>(executionData.m_Data); |
| 24 | Execute(workingMemDescriptor->m_Inputs, workingMemDescriptor->m_Outputs); |
Teresa Charlin | b2d3ec5 | 2022-04-12 22:07:09 +0100 | [diff] [blame] | 25 | } |
| 26 | |
| 27 | void RefGatherNdWorkload::Execute(std::vector<ITensorHandle*> inputs, std::vector<ITensorHandle*> outputs) const |
| 28 | { |
| 29 | ARMNN_SCOPED_PROFILING_EVENT(Compute::CpuRef, "RefGatherNdWorkload_Execute"); |
| 30 | |
| 31 | const TensorInfo& inputInfo0 = GetTensorInfo(inputs[0]); |
| 32 | const TensorInfo& inputInfo1 = GetTensorInfo(inputs[1]); |
| 33 | const TensorInfo& outputInfo = GetTensorInfo(outputs[0]); |
| 34 | |
| 35 | std::unique_ptr<Decoder<float>> params_decoderPtr = MakeDecoder<float>(inputInfo0, inputs[0]->Map()); |
| 36 | |
| 37 | const int32_t* indicesDataPtr = reinterpret_cast<int32_t*>(inputs[1]->Map()); |
| 38 | std::vector<int32_t> indices(indicesDataPtr, indicesDataPtr + inputInfo1.GetNumElements()); |
| 39 | |
| 40 | std::unique_ptr<Encoder<float>> output_encoderPtr = MakeEncoder<float>(outputInfo, outputs[0]->Map()); |
| 41 | |
| 42 | std::map<std::string, unsigned int> keyIndices = CalculateGatherNdKeyIndices(inputInfo0, inputInfo1); |
| 43 | |
| 44 | /// Calculate flattened indices: flattenedIndices = indices * flattenedCoefficients |
| 45 | // Calculate the flattened coefficients to use in the multiplication |
| 46 | // to calculate the flattened indices needed by gather |
| 47 | TensorShape paramsShape = inputInfo0.GetShape(); |
| 48 | std::vector<unsigned int> flattenedCoeff(keyIndices["ND"], 1); |
| 49 | for (unsigned int i = 1; i < keyIndices["ND"]; ++i) |
| 50 | { |
| 51 | flattenedCoeff[i-1] = paramsShape[i]; |
| 52 | } |
| 53 | for (unsigned int i = keyIndices["ND"]-1; i > 0; --i) |
| 54 | { |
| 55 | flattenedCoeff[i-1] *= flattenedCoeff[i]; |
| 56 | } |
| 57 | |
| 58 | // Prepare the vector to store the output of the matrix multiplication, |
| 59 | // which will represent the flattened indices needed by gather |
| 60 | armnn::TensorInfo flattenedIndices_Info = inputInfo1; |
| 61 | flattenedIndices_Info.SetShape({ keyIndices["W"] }); |
| 62 | std::vector<int32_t> flattenedIndices(flattenedIndices_Info.GetNumElements(), 0); |
| 63 | |
| 64 | // Multiplication to calculate the flattened indices, which are the indices needed by gather. |
| 65 | for (unsigned int i = 0; i < keyIndices["W"]; ++i) |
| 66 | { |
| 67 | for (unsigned int j = 0; j < keyIndices["ND"]; ++j) |
| 68 | { |
| 69 | flattenedIndices[i] += indices[i * keyIndices["ND"] + j] * static_cast<int32_t>(flattenedCoeff[j]); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | /// Call Gather with adequate shapes |
| 74 | // Reshape params into {K, C} |
| 75 | armnn::TensorInfo params_K_C_Info = inputInfo0; |
| 76 | params_K_C_Info.SetShape({ keyIndices["K"], keyIndices["C"] }); |
| 77 | |
| 78 | // Reshape indices into {N, W} |
| 79 | armnn::TensorInfo indices_N_W_Info = inputInfo1; |
| 80 | indices_N_W_Info.SetShape({ keyIndices["N"], keyIndices["W"] }); |
| 81 | |
| 82 | // Reshape output to have the shape given by gather {N, W, C} |
| 83 | // (the original outputInfo has the shape given by gatherNd) |
| 84 | armnn::TensorInfo outputGather_Info = outputInfo; |
| 85 | outputGather_Info.SetShape({ keyIndices["N"], keyIndices["W"], keyIndices["C"] }); |
| 86 | |
| 87 | // output_gather = gather(params_K_C, indices_N_W) |
| 88 | Gather(params_K_C_Info, indices_N_W_Info, outputGather_Info, |
| 89 | *params_decoderPtr, flattenedIndices.data(), *output_encoderPtr, 0); |
| 90 | } |
| 91 | |
| 92 | } //namespace armnn |