2.10.3-1

Add support for bfloat16.
Add ncclAvg reduction operation.
Improve performance for aggregated operations.
Improve performance for tree.
Improve network error reporting.
Add NCCL_NET parameter to force a specific network.
Add NCCL_IB_QPS_PER_CONNECTION parameter to split IB traffic onto multiple queue pairs.
Fix topology detection error in WSL2.
Fix proxy memory elements affinity (improve alltoall performance).
Fix graph search on cubemesh topologies.
Fix hang in cubemesh during NVB connections.

src/include/align.h

@@ -16,4 +16,29 @@
 #define ALIGN_SIZE(size, align) \
   size = ((size + (align) - 1) / (align)) * (align);
 
+#if !__CUDA_ARCH__
+  #ifndef __host__
+    #define __host__
+  #endif
+  #ifndef __device__
+    #define __device__
+  #endif
+#endif
+
+template<typename X, typename Y, typename Z = decltype(X()+Y())>
+__host__ __device__ constexpr Z divUp(X x, Y y) {
+  return (x+y-1)/y;
+}
+
+template<typename X, typename Y, typename Z = decltype(X()+Y())>
+__host__ __device__ constexpr Z roundUp(X x, Y y) {
+  return (x+y-1) - (x+y-1)%y;
+}
+
+// assumes second argument is a power of 2
+template<typename X, typename Z = decltype(X()+int())>
+__host__ __device__ constexpr Z alignUp(X x, int a) {
+  return (x+a-1) & Z(-a);
+}
+
 #endif