Sylvain Jeaugey
a8908b34ee
Optimization for Tree allreduce on A100.
Improve aggregation performance.
Use shared buffers for inter-node send/recv.
Add NVTX profiling hooks.
Accelerate alltoall connections by merging communication for all
channels.
Add support for one hop communication through NVLink, for faster
send/recv communication on cubemesh topologies like DGX-1.
Improve alltoall scheduling to better balance intra/inter node
communication.
Increase send/recv parallelism by 8x, each warp sending or
receiving to a different peer.
Net: move to v4.
Net: make flush operation asynchronous to accelerate alltoall.
Net: define maximum number of requests.
Fix hang when using LL128 protocol after 2^31 steps.
Fix #379 : topology injection failing when using less GPUs than
described in the XML.
Fix #394 : protocol mismatch causing hangs or crashes when using
one GPU per node.
[ROCm/rccl commit: 920dbe5b35]
26 lines
974 B
C
26 lines
974 B
C
/*************************************************************************
|
|
* Copyright (c) 2015-2020, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* See LICENSE.txt for license information
|
|
************************************************************************/
|
|
|
|
#ifndef NCCL_ENQUEUE_H_
|
|
#define NCCL_ENQUEUE_H_
|
|
|
|
#include "comm.h"
|
|
#include "group.h"
|
|
#include "collectives.h"
|
|
|
|
ncclResult_t ncclEnqueueCheck(struct ncclInfo* info);
|
|
ncclResult_t ncclCpuBarrierIn(struct ncclComm* comm, int* isLast);
|
|
ncclResult_t ncclCpuBarrierLast(struct ncclComm* comm);
|
|
ncclResult_t ncclCpuBarrierOut(struct ncclComm* comm);
|
|
ncclResult_t ncclBarrierEnqueue(struct ncclComm* comm);
|
|
ncclResult_t ncclBarrierEnqueueWait(struct ncclComm* comm);
|
|
ncclResult_t ncclEnqueueEvents(struct ncclComm* comm);
|
|
ncclResult_t ncclSaveKernel(struct ncclInfo* info);
|
|
ncclResult_t ncclSaveP2pKernel(struct ncclInfo* info);
|
|
ncclResult_t ncclSaveCommKernels(struct ncclComm* comm);
|
|
|
|
#endif // End include guard
|