Brandon Potter
85 строки
2.8 KiB
C++
85 строки
2.8 KiB
C++
/******************************************************************************
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* Copyright (c) 2024 Advanced Micro Devices, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*****************************************************************************/
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#include "atomic_return.hpp"
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#include <cassert>
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#include "constants.hpp"
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namespace rocshmem {
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void allocate_atomic_region(atomic_ret_t** atomic_ret, int num_wg) {
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atomic_ret_t* tmp_ret{nullptr};
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/*
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* Allocate device-side control struct for the atomic return region.
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*/
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CHECK_HIP(
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hipMalloc(reinterpret_cast<void**>(&tmp_ret), sizeof(atomic_ret_t)));
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/*
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* Allocate fine-grained device-side memory for the atomic return
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* region.
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*/
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size_t size_bytes{max_nb_atomic * num_wg * sizeof(uint64_t)};
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#ifdef HIP_SUPPORTS_MALLOC_UNCACHED
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CHECK_HIP(
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hipExtMallocWithFlags(reinterpret_cast<void**>(&tmp_ret->atomic_base_ptr),
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size_bytes, hipDeviceMallocUncached));
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#else
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CHECK_HIP(
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hipExtMallocWithFlags(reinterpret_cast<void**>(&tmp_ret->atomic_base_ptr),
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size_bytes, hipDeviceMallocFinegrained));
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#endif
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/*
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* Zero-initialize the entire atomic return region.
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*/
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memset(tmp_ret->atomic_base_ptr, 0, size_bytes);
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*atomic_ret = tmp_ret;
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}
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void init_g_ret(SymmetricHeap* heap_handle, MPI_Comm thread_comm, int num_wg,
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char** g_ret) {
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/*
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* Create space on the symmetric heap
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*/
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void* ptr{nullptr};
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size_t size_bytes{sizeof(int64_t) * MAX_WG_SIZE * num_wg};
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heap_handle->malloc(&ptr, size_bytes);
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assert(ptr);
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/*
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* Assign g_ret the output of the malloc
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*/
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*g_ret = reinterpret_cast<char*>(ptr);
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/*
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* Make sure that all processing elements have done this before
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* continuing.
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*/
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MPI_Barrier(thread_comm);
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}
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} // namespace rocshmem
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