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[Refactor] Simplify the logic of sparse_conv #2802

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Jun 1, 2023
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[Refactor] Simplify the logic of sparse_conv #2802

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16 changes: 4 additions & 12 deletions mmcv/ops/csrc/pytorch/mlu/sparse_conv_mlu.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -147,12 +147,8 @@ torch::Tensor IndiceConvForwardMLUKernelLauncher(
torch::Tensor indiceNum, int64_t numActOut, int64_t _inverse,
int64_t _subM) {
auto indice_num_cpu = indiceNum.to({torch::kCPU});
auto indice_num_cpu_64 = indice_num_cpu.data_ptr<int>();
int indice_num_len = indiceNum.numel();
int64_t indice_num[indice_num_len];
for (int i = 0; i < indice_num_len; ++i) {
indice_num[i] = (int64_t)(((int *)indice_num_cpu_64)[i]);
}
auto indice_num_cpu_64 = indice_num_cpu.to(torch::kInt64);
auto indice_num = indice_num_cpu_64.data_ptr<int64_t>();

// generate empty output
int C = filters.dim() == 4 ? filters.size(3) : filters.size(4);
Expand Down Expand Up @@ -241,12 +237,8 @@ std::vector<torch::Tensor> IndiceConvBackwardMLUKernelLauncher(
torch::Tensor indicePairs, torch::Tensor indiceNum, int64_t _inverse,
int64_t _subM) {
auto indice_num_cpu = indiceNum.to({torch::kCPU});
auto indice_num_cpu_64 = indice_num_cpu.data_ptr<int>();
int indice_num_len = indiceNum.numel();
int64_t indice_num[indice_num_len];
for (int i = 0; i < indice_num_len; ++i) {
indice_num[i] = (int64_t)(((int *)(indice_num_cpu_64))[i]);
}
auto indice_num_cpu_64 = indice_num_cpu.to(torch::kInt64);
auto indice_num = indice_num_cpu_64.data_ptr<int64_t>();

// generate empty input_grad
torch::Tensor input_grad = at::zeros({features.size(0), features.size(1)},
Expand Down