2.9.9-1

Fix crash when setting NCCL_MAX_P2P_NCHANNELS below nchannels.
Fix hang during sendrecv dynamic NVB connection establishment on
cubemesh topologies.
Add environment variable to only use SHARP on communicators beyond
a given number of ranks.
Add debug subsystem to trace memory allocations.
Fix compilation with TRACE=1. (Issue #505)

src/include/alloc.h

@@ -16,6 +16,7 @@ template <typename T>
 static ncclResult_t ncclCudaHostCalloc(T** ptr, size_t nelem) {
   CUDACHECK(cudaHostAlloc(ptr, nelem*sizeof(T), cudaHostAllocMapped));
   memset(*ptr, 0, nelem*sizeof(T));
+  INFO(NCCL_ALLOC, "Cuda Host Alloc Size %ld pointer %p", nelem*sizeof(T), *ptr);
   return ncclSuccess;
 }
 
@@ -33,6 +34,7 @@ static ncclResult_t ncclCalloc(T** ptr, size_t nelem) {
   }
   memset(p, 0, nelem*sizeof(T));
   *ptr = (T*)p;
+  INFO(NCCL_ALLOC, "Mem Alloc Size %ld pointer %p", nelem*sizeof(T), *ptr);
   return ncclSuccess;
 }
 
@@ -45,6 +47,7 @@ static ncclResult_t ncclCudaCalloc(T** ptr, size_t nelem) {
   CUDACHECK(cudaMemsetAsync(*ptr, 0, nelem*sizeof(T), stream));
   CUDACHECK(cudaStreamSynchronize(stream));
   CUDACHECK(cudaStreamDestroy(stream));
+  INFO(NCCL_ALLOC, "Cuda Alloc Size %ld pointer %p", nelem*sizeof(T), *ptr);
   return ncclSuccess;
 }
 
@@ -65,6 +68,7 @@ static ncclResult_t ncclIbMalloc(void** ptr, size_t size) {
   if (ret != 0) return ncclSystemError;
   memset(p, 0, size);
   *ptr = p;
+  INFO(NCCL_ALLOC, "Ib Alloc Size %ld pointer %p", size, *ptr);
   return ncclSuccess;
 }