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b9c0658fcf
The idea is that we take all the values that can contain dimension sizes from the descriptor (shape, strides_in, strides_out) and we pass them as 1-d tensor operands. We also pass as an operand the output_shape, so that we can use the hlo.CustomCallOp `indices_of_output_shapes` attribute to tell the shape refinement how to compute the shape of the result. We keep the old descriptor and the ducc_fft registration for the old C++ custom targets for backwards compatibility (for 6 months). That behavior is tested by back_compat_test.py. The one downside of this implementation is that it moves some of the ducc-specific logic from ducc_fft.py (in jaxlib) into fft.py (in jax). This was necessary because that code computes with dimensions that are now dynamic. In JAX we have support for evaluating dynamic shapes and turning them into 1-d tensors. Also added backwards compatibility test for dynamic_ducc_fft and kept the old test for ducc_fft. PiperOrigin-RevId: 541168692
49 lines
1.1 KiB
Plaintext
49 lines
1.1 KiB
Plaintext
/* Copyright 2020 The JAX Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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namespace jax;
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enum DuccFftDtype : byte {
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COMPLEX64 = 0,
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COMPLEX128 = 1,
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}
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enum DuccFftType : byte {
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C2C = 0,
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C2R = 1,
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R2C = 2,
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}
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table DuccFftDescriptor {
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dtype:DuccFftDtype;
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fft_type:DuccFftType;
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shape:[uint64];
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strides_in:[uint64];
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strides_out:[uint64];
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axes:[uint32];
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forward:bool;
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scale:double;
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}
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table DynamicDuccFftDescriptor {
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ndims:uint32;
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dtype:DuccFftDtype;
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fft_type:DuccFftType;
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axes:[uint32];
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forward:bool;
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}
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root_type DuccFftDescriptor;
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