Wenkai Du
114 строки
4.8 KiB
C
114 строки
4.8 KiB
C
/*************************************************************************
|
|
* Copyright (c) 2016-2021, NVIDIA CORPORATION. All rights reserved.
|
|
* Modifications Copyright (c) 2019-2021 Advanced Micro Devices, Inc. All rights reserved.
|
|
*
|
|
* See LICENSE.txt for license information
|
|
************************************************************************/
|
|
|
|
#ifndef NCCL_GRAPH_H_
|
|
#define NCCL_GRAPH_H_
|
|
|
|
#include "nccl.h"
|
|
#include "devcomm.h"
|
|
#include <limits.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <sched.h>
|
|
|
|
ncclResult_t ncclTopoCudaPath(int cudaDev, char** path);
|
|
|
|
struct ncclTopoSystem;
|
|
// Build the topology
|
|
ncclResult_t ncclTopoGetSystem(struct ncclComm* comm, struct ncclTopoSystem** system);
|
|
ncclResult_t ncclTopoSortSystem(struct ncclTopoSystem* system);
|
|
ncclResult_t ncclTopoPrint(struct ncclTopoSystem* system);
|
|
|
|
ncclResult_t ncclTopoComputePaths(struct ncclTopoSystem* system, struct ncclPeerInfo* info);
|
|
void ncclTopoFree(struct ncclTopoSystem* system);
|
|
ncclResult_t ncclTopoTrimSystem(struct ncclTopoSystem* system, struct ncclComm* comm);
|
|
ncclResult_t ncclTopoComputeP2pChannels(struct ncclComm* comm);
|
|
ncclResult_t ncclTopoGetNvbGpus(struct ncclTopoSystem* system, int rank, int* nranks, int** ranks);
|
|
|
|
// Query topology
|
|
ncclResult_t ncclTopoGetNetDev(struct ncclTopoSystem* system, int rank, struct ncclTopoGraph* graph, int channelId, int rr, int* net);
|
|
ncclResult_t ncclTopoCheckP2p(struct ncclTopoSystem* system, int64_t id1, int64_t id2, int* p2p, int *read, int* intermediateRank);
|
|
ncclResult_t ncclTopoCheckGdr(struct ncclTopoSystem* topo, int64_t busId, int netDev, int read, int* useGdr);
|
|
ncclResult_t ncclTopoGetIntraNetDev(struct ncclTopoSystem* system, int rank, struct ncclTopoGraph* graph, int channelId, int type, int* dev);
|
|
ncclResult_t ncclTopoGetLinkType(struct ncclTopoSystem* system, int cudaDev1, int cudaDev2, bool* isXGMI, bool direct_only=false);
|
|
|
|
// Find CPU affinity
|
|
ncclResult_t ncclTopoGetCpuAffinity(struct ncclTopoSystem* system, int rank, cpu_set_t* affinity);
|
|
|
|
#define NCCL_TOPO_CPU_ARCH_X86 1
|
|
#define NCCL_TOPO_CPU_ARCH_POWER 2
|
|
#define NCCL_TOPO_CPU_ARCH_ARM 3
|
|
#define NCCL_TOPO_CPU_VENDOR_INTEL 1
|
|
#define NCCL_TOPO_CPU_VENDOR_AMD 2
|
|
#define NCCL_TOPO_CPU_VENDOR_ZHAOXIN 3
|
|
#define NCCL_TOPO_CPU_TYPE_BDW 1
|
|
#define NCCL_TOPO_CPU_TYPE_SKL 2
|
|
#define NCCL_TOPO_CPU_TYPE_ZEN 3
|
|
#define NCCL_TOPO_CPU_TYPE_ROME 4
|
|
#define NCCL_TOPO_CPU_TYPE_YONGFENG 1
|
|
ncclResult_t ncclTopoCpuType(struct ncclTopoSystem* system, int* arch, int* vendor, int* model);
|
|
ncclResult_t ncclTopoGetNetCount(struct ncclTopoSystem* system, int* count);
|
|
|
|
#define NCCL_TOPO_MAX_NODES 256
|
|
|
|
// Init search. Needs to be done before calling ncclTopoCompute
|
|
ncclResult_t ncclTopoSearchInit(struct ncclTopoSystem* system);
|
|
|
|
#define NCCL_TOPO_PATTERN_BALANCED_TREE 1 // Spread NIC traffic between two GPUs (Tree parent + one child on first GPU, second child on second GPU)
|
|
#define NCCL_TOPO_PATTERN_SPLIT_TREE 2 // Spread NIC traffic between two GPUs (Tree parent on first GPU, tree children on the second GPU)
|
|
#define NCCL_TOPO_PATTERN_TREE 3 // All NIC traffic going to/from the same GPU
|
|
#define NCCL_TOPO_PATTERN_RING 4 // Ring
|
|
struct ncclTopoGraph {
|
|
// Input / output
|
|
int id; // ring : 0, tree : 1, collnet : 2
|
|
int pattern;
|
|
int crossNic;
|
|
int collNet;
|
|
int minChannels;
|
|
int maxChannels;
|
|
// Output
|
|
int nChannels;
|
|
float speedIntra;
|
|
float speedInter;
|
|
int typeIntra;
|
|
int typeInter;
|
|
int sameChannels;
|
|
int nHops;
|
|
int intra[MAXCHANNELS*NCCL_TOPO_MAX_NODES];
|
|
int inter[MAXCHANNELS*2];
|
|
int nIntraChannels;
|
|
int intraNets[MAXCHANNELS*NCCL_TOPO_MAX_NODES*2];
|
|
};
|
|
ncclResult_t ncclTopoCompute(struct ncclTopoSystem* system, struct ncclTopoGraph* graph);
|
|
|
|
ncclResult_t ncclTopoPrintGraph(struct ncclTopoSystem* system, struct ncclTopoGraph* graph);
|
|
ncclResult_t ncclTopoDumpGraphs(struct ncclTopoSystem* system, int ngraphs, struct ncclTopoGraph** graphs);
|
|
|
|
struct ncclTopoRanks {
|
|
int ringRecv[MAXCHANNELS];
|
|
int ringSend[MAXCHANNELS];
|
|
int ringPrev[MAXCHANNELS];
|
|
int ringNext[MAXCHANNELS];
|
|
int treeToParent[MAXCHANNELS];
|
|
int treeToChild0[MAXCHANNELS];
|
|
int treeToChild1[MAXCHANNELS];
|
|
};
|
|
|
|
ncclResult_t ncclTopoPreset(struct ncclComm* comm,
|
|
struct ncclTopoGraph* treeGraph, struct ncclTopoGraph* ringGraph,
|
|
struct ncclTopoRanks* topoRanks);
|
|
|
|
ncclResult_t ncclTopoPostset(struct ncclComm* comm, int* firstRanks, int* treePatterns,
|
|
struct ncclTopoRanks** allTopoRanks, int* rings, struct ncclTopoGraph* collNetGraph, int nc);
|
|
|
|
ncclResult_t ncclTopoTuneModel(struct ncclComm* comm, int minCompCap, int maxCompCap, struct ncclTopoGraph* treeGraph, struct ncclTopoGraph* ringGraph, struct ncclTopoGraph* collNetGraph);
|
|
#include "info.h"
|
|
ncclResult_t ncclTopoGetAlgoTime(struct ncclInfo* info, int algorithm, int protocol, int numPipeOps, float* time);
|
|
|
|
#endif
|