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.


[ROCm/rccl commit: b6475625fb]

projects/rccl/src/device/common.h

@@ -25,6 +25,7 @@ struct ncclShmemGroup {
   union {
     unpackGroupShmem unpack;
   } devicePlugin;
+  int32_t dstSizes[NCCL_MAX_NVLS_ARITY+1];
 };
 
 struct ncclShmemData {