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.


[ROCm/rccl commit: 920dbe5b35]

projects/rccl/src/include/param.h

@@ -31,10 +31,11 @@ static void setEnvFile(const char* fileName) {
     int s=0; // Env Var Size
     while (line[s] != '\0' && line[s] != '=') s++;
     if (line[s] == '\0') continue;
-    strncpy(envVar, line, std::min(1024,s));
+    strncpy(envVar, line, std::min(1023,s));
     envVar[s] = '\0';
     s++;
-    strncpy(envValue, line+s, 1024);
+    strncpy(envValue, line+s, 1023);
+    envValue[1023]='\0';
     setenv(envVar, envValue, 0);
   }
   if (line) free(line);