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cbe524298c
This allows lowering of threefry2x32 for GPU even on a machine without GPUs. For the next 3 weeks, we only use the new custom call implementation if we are not in "export" mode, and if we use a new jaxlib. PiperOrigin-RevId: 647657084
50 lines
1.5 KiB
C++
50 lines
1.5 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 "nanobind/nanobind.h"
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#include "jaxlib/gpu/prng_kernels.h"
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#include "jaxlib/kernel_nanobind_helpers.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 nb = nanobind;
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std::string BuildThreeFry2x32Descriptor(std::int64_t n) {
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return PackDescriptorAsString(ThreeFry2x32Descriptor{n});
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}
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nb::dict Registrations() {
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nb::dict dict;
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dict[JAX_GPU_PREFIX "_threefry2x32_ffi"] =
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EncapsulateFunction(ThreeFry2x32Ffi);
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// TODO(b/338022728): remove after 3 weeks
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dict[JAX_GPU_PREFIX "_threefry2x32"] = EncapsulateFunction(ThreeFry2x32);
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return dict;
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}
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NB_MODULE(_prng, m) {
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m.def("registrations", &Registrations);
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// TODO(b/338022728): remove after 3 weeks
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m.def("threefry2x32_descriptor", [](std::int64_t n) {
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std::string result = BuildThreeFry2x32Descriptor(n);
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return nb::bytes(result.data(), result.size());
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});
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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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