github.com/marian-nmt/nccl.git - Unnamed repository; edit this file 'description' to name the repository.

Age	Commit message (Collapse)	Author
2020-11-17	2.8.3-1	Sylvain Jeaugey
	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.
2020-07-28	2.7.8-1	David Addison
	Fix collective mismatch error when using ncclSend/ncclRecv
2020-06-08	2.7.3-1	Sylvain Jeaugey
	Add support for A100 GPU and related platforms. Add support for CUDA 11. Add support for send/receive operations (beta).
2020-03-21	2.6.4-1	Sylvain Jeaugey
	Add support for network collectives. Add support for XML topology dump/injection. Add text values for GDR and P2P Levels, including "NVL". Add speed detection for PCI, Infiniband and Ethernet cards. Add CPU detection for ARM and AMD CPUs. Add support for adaptive routing on Infiniband. Change NET plugin API to v3 : merge PCI path and GPU pointer capability into a single structure and add other properties.
2019-11-20	2.5.6-1 (#255)	Sylvain Jeaugey
	Add LL128 Protocol. Rewrite the topology detection and tree/ring creation (#179). Improve tree performance by sending/receiving from different GPUs. Add model-based tuning to switch between the different algorithms and protocols. Rework P2P/SHM detection in containers (#155, #248). Detect duplicated devices and return an error (#231). Add tuning for GCP
2019-04-05	NCCL 2.4.6-1	David Addison
	Added detection of IBM/Power NVLink bridge device. Add NUMA support to PCI distance calculations. Added NCCL_IGNORE_CPU_AFFINITY env var. Fix memory leaks; GithubIssue#180 Compiler warning fix; GithubIssue#178 Replace non-standard variable length arrays. GithubIssue#171 Fix Tree+Shared Memory crash. GithubPR#185 Fix LL cleanup hang during long running DL jobs. Fix NCCL_RINGS environment variable handling. Added extra checks to catch repeat calls to ncclCommDestroy() GithubIssue#191 Improve bootstrap socket connection reliability at scale. Fix hostname hashing issue. GithubIssue#187 Code cleanup to rename all non device files from .cu to .cc
2019-01-30	2.4.2-1	Sylvain Jeaugey
	Add tree algorithms for allreduce to improve performance at scale. Add ncclCommAbort() and ncclCommGetAsyncError() to properly handle network errors and be permit recover. Detect initial CPU affinity and no longer escape it.
2018-09-26	2.3.5-5v2.3.5-5	Sylvain Jeaugey
	Add support for inter-node communication using sockets and InfiniBand/RoCE. Improve latency. Add support for aggregation. Improve LL/regular tuning. Remove tests as those are now at github.com/nvidia/nccl-tests .