Sylvain Jeaugey
ab2b89c4c3
Add support for IB SHARP 1PPN operation with user buffers. Improve support for MNNVL, add NVLS support and multi-clique support. * Detect the NVLS clique through NVML * Exchange XML between peers in the same NVLS clique and fuse XMLs before creating the topology graph. * Rework bootstrap allgather algorithms to allow for large allgather operations intra-node (XML exchange). Net/IB: add support for dynamic GID detection. * Automatically select RoCEv2/IPv4 interface by default. Allow to select IPv6 or even the network/mask. Reduce NVLS memory usage. * Add stepSize as property of a connection to allow for different sizes on different peers; set it to 128K for NVLink SHARP. Improve tuner loading * Look for more paths, be more consistent with the network device plugin. * Also search for tuner support inside the net plugin. Improve tuner API * Add context to support multi-device per process. Add magic number around comm object to detect comm corruption. * Add some basic check around communicators so that we can report a problem when a communicator gets corrupted or a wrong comm pointer is passed to NCCL. Fix net/IB error path. Github PR #1164 Fix collnet rail mapping with split comm. Fix packet reordering issue causing bootstrap mismatch * Use a different tag in ncclTransportP2pSetup for the connectInfo exchange and the following barrier. Fix hang when crossNic is inconsistent between ranks. Fix minCompCap/maxCompCap computation. Github issue #1184
35 lines
1.8 KiB
C
35 lines
1.8 KiB
C
/*************************************************************************
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* Copyright (c) 2015-2022, NVIDIA CORPORATION. All rights reserved.
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*
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* See LICENSE.txt for license information
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************************************************************************/
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#ifndef NCCL_BOOTSTRAP_H_
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#define NCCL_BOOTSTRAP_H_
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#include "nccl.h"
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#include "comm.h"
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struct ncclBootstrapHandle {
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uint64_t magic;
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union ncclSocketAddress addr;
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};
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static_assert(sizeof(struct ncclBootstrapHandle) <= sizeof(ncclUniqueId), "Bootstrap handle is too large to fit inside NCCL unique ID");
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ncclResult_t bootstrapNetInit();
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ncclResult_t bootstrapCreateRoot(struct ncclBootstrapHandle* handle, bool idFromEnv);
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ncclResult_t bootstrapGetUniqueId(struct ncclBootstrapHandle* handle);
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ncclResult_t bootstrapInit(struct ncclBootstrapHandle* handle, struct ncclComm* comm);
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ncclResult_t bootstrapSplit(struct ncclBootstrapHandle* handle, struct ncclComm* comm, struct ncclComm* parent, int color, int key, int* parentRanks);
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ncclResult_t bootstrapAllGather(void* commState, void* allData, int size);
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ncclResult_t bootstrapSend(void* commState, int peer, int tag, void* data, int size);
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ncclResult_t bootstrapRecv(void* commState, int peer, int tag, void* data, int size);
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ncclResult_t bootstrapBarrier(void* commState, int rank, int nranks, int tag);
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ncclResult_t bootstrapBroadcast(void* commState, int rank, int nranks, int root, void* bcastData, int size);
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ncclResult_t bootstrapIntraNodeBarrier(void* commState, int *ranks, int rank, int nranks, int tag);
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ncclResult_t bootstrapIntraNodeAllGather(void* commState, int *ranks, int rank, int nranks, void* allData, int size);
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ncclResult_t bootstrapIntraNodeBroadcast(void* commState, int *ranks, int rank, int nranks, int root, void* bcastData, int size);
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ncclResult_t bootstrapClose(void* commState);
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ncclResult_t bootstrapAbort(void* commState);
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#endif
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