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63 lines
2.2 KiB
Plaintext
63 lines
2.2 KiB
Plaintext
// 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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#include "cuda_multiprocess.h"
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#include "helper.h"
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namespace {
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int sharedMemoryOpen2(const char *name, size_t sz, sharedMemoryInfo *info) {
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info->size = sz;
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info->shmFd = shm_open(name, O_RDWR, 0777);
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if (info->shmFd < 0) {
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return errno;
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}
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info->addr =
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mmap(0, sz, PROT_READ | PROT_WRITE, MAP_SHARED, info->shmFd, 0);
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if (info->addr == NULL) {
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return errno;
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}
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return 0;
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}
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} // namespace
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std::vector<paddle::Tensor> GetDataPtrIpc(const paddle::Tensor &tmp_input,
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const std::string &shm_name) {
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auto out_data_ptr_tensor =
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paddle::full({1}, 0, paddle::DataType::INT64, paddle::CPUPlace());
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auto out_data_ptr_tensor_ptr = out_data_ptr_tensor.data<int64_t>();
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volatile shmStruct *shm = NULL;
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sharedMemoryInfo info;
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if (sharedMemoryOpen2(shm_name.c_str(), sizeof(shmStruct), &info) != 0) {
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printf("Failed to create shared memory slab\n");
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printf("Func GetDataPtrIpc. Shm_name: %s\n", shm_name.c_str());
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exit(EXIT_FAILURE);
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}
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shm = (volatile shmStruct *)info.addr;
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void *ptr = nullptr;
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checkCudaErrors(cudaIpcOpenMemHandle(&ptr,
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*(cudaIpcMemHandle_t *)&shm->memHandle,
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cudaIpcMemLazyEnablePeerAccess));
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out_data_ptr_tensor_ptr[0] = reinterpret_cast<int64_t>(ptr);
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return {out_data_ptr_tensor};
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}
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PD_BUILD_STATIC_OP(get_data_ptr_ipc)
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.Inputs({"tmp_input"})
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.Attrs({"shm_name: std::string"})
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.Outputs({"data_ptr"})
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.SetKernelFn(PD_KERNEL(GetDataPtrIpc));
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