2.8.3-1

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.

pkg/redhat/nccl.spec.in

@@ -1,7 +1,7 @@
 Name:           libnccl
 Version:        ${nccl:Major}.${nccl:Minor}.${nccl:Patch}${nccl:Suffix}
 Release:        ${pkg:Revision}+cuda${cuda:Major}.${cuda:Minor}
-Summary:        NVIDIA Collectives Communication Library (NCCL) Runtime
+Summary:        NVIDIA Collective Communication Library (NCCL) Runtime
 
 Group:          Development/Libraries
 License:        BSD
@@ -18,13 +18,13 @@ NVLink, NVswitch, as well as networking using InfiniBand Verbs or TCP/IP
 sockets.
 
 %package devel
-Summary:        NVIDIA Collectives Communication Library (NCCL) Runtime
+Summary:        NVIDIA Collective Communication Library (NCCL) Runtime
 Group:          Development/Libraries
 %description devel
 NCCL development files
 
 %package static
-Summary:        NVIDIA Collectives Communication Library (NCCL) Runtime
+Summary:        NVIDIA Collective Communication Library (NCCL) Runtime
 Group:          Development/Libraries
 %description static
 NCCL static library