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a852710a09
The code for both CUDA and ROCM is almost identical, so with a small shim library to handle the differences we can share almost everything. PiperOrigin-RevId: 483666051
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
/* Copyright 2019 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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#include <algorithm>
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#include <stdexcept>
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#include <utility>
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#include <vector>
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#include "absl/container/flat_hash_map.h"
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#include "absl/strings/str_format.h"
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#include "jaxlib/gpu/blas_kernels.h"
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#include "jaxlib/gpu/vendor.h"
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#include "jaxlib/kernel_pybind11_helpers.h"
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#include "include/pybind11/numpy.h"
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#include "include/pybind11/pybind11.h"
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#include "include/pybind11/stl.h"
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namespace jax {
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namespace JAX_GPU_NAMESPACE {
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namespace {
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namespace py = pybind11;
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// Converts a NumPy dtype to a Type.
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BlasType DtypeToBlasType(const py::dtype& np_type) {
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static auto* types = new absl::flat_hash_map<std::pair<char, int>, BlasType>({
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{{'f', 4}, BlasType::F32},
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{{'f', 8}, BlasType::F64},
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{{'c', 8}, BlasType::C64},
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{{'c', 16}, BlasType::C128},
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});
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auto it = types->find({np_type.kind(), np_type.itemsize()});
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if (it == types->end()) {
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throw std::invalid_argument(
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absl::StrFormat("Unsupported dtype %s", py::repr(np_type)));
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}
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return it->second;
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}
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// Returns the descriptor for a GetrfBatched operation.
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std::pair<size_t, py::bytes> BuildGetrfBatchedDescriptor(const py::dtype& dtype,
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int b, int n) {
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BlasType type = DtypeToBlasType(dtype);
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size_t size = b * sizeof(void*);
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return {size, PackDescriptor(GetrfBatchedDescriptor{type, b, n})};
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}
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// Returns the descriptor for a GetrfBatched operation.
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std::pair<size_t, py::bytes> BuildGeqrfBatchedDescriptor(const py::dtype& dtype,
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int b, int m, int n) {
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BlasType type = DtypeToBlasType(dtype);
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size_t size = b * sizeof(void*);
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return {size, PackDescriptor(GeqrfBatchedDescriptor{type, b, m, n})};
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}
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py::dict Registrations() {
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py::dict dict;
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dict[JAX_GPU_PREFIX "blas_getrf_batched"] = EncapsulateFunction(GetrfBatched);
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dict[JAX_GPU_PREFIX "blas_geqrf_batched"] = EncapsulateFunction(GeqrfBatched);
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return dict;
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}
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PYBIND11_MODULE(_blas, m) {
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m.def("registrations", &Registrations);
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m.def("build_getrf_batched_descriptor", &BuildGetrfBatchedDescriptor);
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m.def("build_geqrf_batched_descriptor", &BuildGeqrfBatchedDescriptor);
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}
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} // namespace
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} // namespace JAX_GPU_NAMESPACE
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} // namespace jax
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