2.20.3-1

Add support for alternating rings, allow for cross-nic rings without
cross-rail communication.
Add support for user buffer registration for network send/recv.
Optimize aggregated operations to better utilize all channels.
Add flattening for BCM PCI gen5 switches.
Add support for inter-node NVLink communication
Add support for port fusion in NET/IB.
Add support for ReduceScatter and AllGather using Collnet.
Update net API to v8.
Fix hang during A2A connection.

src/Makefile

@@ -10,7 +10,7 @@ include ../makefiles/version.mk
 INCEXPORTS  := nccl.h nccl_net.h
 LIBSRCFILES := \
 	bootstrap.cc channel.cc collectives.cc debug.cc enqueue.cc group.cc \
-	init.cc init_nvtx.cc net.cc proxy.cc transport.cc \
+	init.cc init_nvtx.cc net.cc proxy.cc transport.cc register.cc \
 	$(wildcard graph/*.cc) \
 	$(wildcard misc/*.cc) \
 	$(wildcard transport/*.cc)