SeetaResearch / Dragon

Summary:
The new frontend makes an union of two execution modes, while starts from
a single tensor class. Besides, it emits the operator execution through
a common path that works both for dragon and torch.

Summary:
This commit generalizes the fully-connected operation into GEMM,
and enhances the matmul operation via batched Dot, GEMV and GEMM.
New representations and attributes have been consistent with ONNX.

Summary:
This commit adds 1D and 3D support for vision operators
via a generalized ND implementation.

Summary:
This commit tests the correctness of shape inference and data type
blended by autograph module.

Summary:
This commit redesigns the ``vm.onnx`` by referring the official repository.
Frontends and backends are aligned with identical API for dragon, torch and tensorrt.

Summary:
This commit adds pseudo FP16 kernels with FP32 conversions
for DepthwiseConv2d and SyncBN operator.

Summary:
This commit adds the unique op for dragon, torch, tensorflow and onnx.
Besides, fixes the bug that gets the wrong workspace size in cached cudnn convolution.

Summary:
This commit reimplements the default shuffle policy of data reader with
sequential sampling (be consistent with DALI) instead of chunk permutation (MXNet solution).
Sequential sampling is tuned by argument ``initial_fill`` only, and works both for HDD and SSD.

Summary:
This commit renames the operator argument getter to ``GetArgument``
whatever an argument is single or repeated.

Summary:
This commit enforces the stream synchronization before dispatching NCCL collectives.
Otherwise, data corruption will happen due to the default value of ``NCCL_GROUP_CUDA_STREAM``
changed to 0 since CUDA 9.2, i.e., no explicit event waiting for unfinished kernels.

Summary:
This commit computes the correct device for an existing output tensor.

Summary:
This commit enforces all the vm packages to take api/core structure
to adapt to the more complex future developments.

Summary:
This commit normalizes the inconsistent math notations in docstring.

Summary:
This commit aligns the properties and methods of tensor class.

Summary:
This commit moves the workspace api into the current workspace instance.
For this reason, the namespace ``dragon.workspace`` is removed for simplicity.

Summary:
This commit tests the executing of native ops and verifies the results.
Several bugs are found and fixed according to these tests.