wehub-resource-sync
85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
// Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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#pragma once
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#ifdef PADDLE_WITH_CUDA
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#include <cub/cub.cuh>
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#endif
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#include "paddle/phi/backends/gpu/gpu_context.h"
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#include "paddle/phi/core/dense_tensor.h"
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namespace phi {
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namespace funcs {
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#ifdef PADDLE_WITH_CUDA
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template <int kValueSize>
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struct OpaqueTypeRadix {
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uint8_t data[kValueSize];
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__device__ __host__ OpaqueTypeRadix() = default;
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};
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template <typename key_t, int kValueSize>
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void RadixSortPairsImpl(const GPUContext& dev_ctx,
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const key_t* keys_in,
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key_t* keys_out,
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const OpaqueTypeRadix<kValueSize>* values_in,
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OpaqueTypeRadix<kValueSize>* values_out,
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int64_t n,
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bool descending = false,
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int64_t begin_bit = 0,
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int64_t end_bit = sizeof(key_t) * 8);
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template <typename key_t, typename value_t>
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void RadixSortPairs(const GPUContext& dev_ctx,
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const key_t* keys_in,
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key_t* keys_out,
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const value_t* values_in,
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value_t* values_out,
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int64_t n,
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bool descending = false,
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int64_t begin_bit = 0,
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int64_t end_bit = sizeof(key_t) * 8) {
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PADDLE_ENFORCE_EQ(
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std::is_trivially_copyable<value_t>::value,
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true,
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common::errors::InvalidArgument(
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"RadixSortPairs value type must be trivially copyable"));
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using opaque_t = OpaqueTypeRadix<sizeof(value_t)>;
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PADDLE_ENFORCE_EQ(
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sizeof(value_t) <= 8 && (sizeof(value_t) & (sizeof(value_t) - 1)) == 0,
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true,
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common::errors::InvalidArgument(
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"Unsupported value_t size (must be 1, 2, 4, or 8 bytes)"));
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PADDLE_ENFORCE_EQ(
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sizeof(value_t),
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alignof(value_t),
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common::errors::InvalidArgument("Expected value_t to be size-aligned"));
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RadixSortPairsImpl<key_t, sizeof(value_t)>(
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dev_ctx,
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keys_in,
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keys_out,
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reinterpret_cast<const opaque_t*>(values_in),
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reinterpret_cast<opaque_t*>(values_out),
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n,
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descending,
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begin_bit,
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end_bit);
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}
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#endif
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} // namespace funcs
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} // namespace phi
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