derek.holloway
7502bf64a4
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57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*************************************************************************
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* SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0
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*
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* See LICENSE.txt for more license information
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*************************************************************************/
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#ifndef UTILS_H_
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#define UTILS_H_
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#include "hip/hip_runtime.h"
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#include <rccl/rccl.h>
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#include "nccl_utils.h"
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef MPI_SUPPORT
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#include "mpi.h"
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#include "mpi_utils.h"
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#else
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#include <pthread.h>
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#include <unistd.h>
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#endif
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/**
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* Broadcast NCCL unique ID
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*
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* Broadcasts the NCCL unique ID from the root rank to all other ranks.
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* Uses MPI_Bcast in MPI mode and pthread barrier in pthread mode.
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*
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* @param root Root rank that holds the NCCL unique ID
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* @param my_rank Current rank or thread id
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* @param arg Pointer to NCCL unique ID to broadcast
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*
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* @return 0 on success, non-zero on error
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*/
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int util_broadcast(int root, int my_rank, ncclUniqueId *arg);
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/**
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* Run the given NCCL example in parallel
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*
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* This function performs the complete NCCL example lifecycle:
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* 1. Initialize backend (MPI or pthread)
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* 2. Execute NCCL communicator setup function
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* 3. Cleanup of all resources
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*
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* @param argc Command line argument count
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* @param argv Command line arguments
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* @param ncclExample Function pointer to example-specific NCCL setup
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*
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* @return 0 on success, non-zero on error
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*/
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int run_example(int argc, char *argv[],
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void *(*ncclExample)(int, int, int, int));
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#endif // UTILS_H_
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