2.24.3-1

Network user buffer support for collectives
 * Leverage user buffer registration to achieve zero-copy
   inter-node communications for Ring, NVLS and Collnet

Add RAS subsystem
 * Create a RAS thread keeping track of all NCCL communicators.
 * Add a ncclras tool contacting the RAS thread and getting a
   report.

Add fp8 support
 * Add support for e5m2 and e4m3 8-bit floating point operations.
 * Use Tree/PAT algorithms when possible for better numerical
   stability.

Add NIC fusion
 * Add a NET API to ask the network plugin to fuse a set of
   interfaces together.
 * Fuse multiple NICs under the same PCI switch as a single,
   larger NIC.

Socket connection failure retry
 * Retry in case of socket connection failure (unreachable host)
 * Avoid "Software caused connection abort" errors on retries

QP connection failure retry
 * Retry in case of IB QP connection failure during ibv_modify_qp.

NET API improvements
 * Allow plugins to force a flush in case data and completion
   ordering is not guaranteed.
 * Indicate when completion is not needed (e.g. for the LL128
   protocol), allowing plugins to skip generating a completion.
 * Allow for full offload of allgather operations when using one
   GPU per node.

NCCL_ALGO/NCCL_PROTO strict enforcement
 * Extend NCCL_ALGO/NCCL_PROTO syntax to be able to specify
   ALGO/PROTO filters for each collective operation.
 * Strictly enforce the ALGO/PROTO filters, no longer fall back
   on the ring algorithm when the filtering leaves no option and
   error out instead.

Enable CUMEM host allocations
 * Use cumem functions for host memory allocation by default.

Improved profiler plugin API
 * Avoid dependencies with NCCL includes.
 * Add information on whether the buffer is registered or not

Adjust PAT tuning
 * Improve transition between PAT and ring at scale.

Fix hangs when running with different CPU architectures
 * Detect when we use a mix of GPU architectures
 * Ensure Algo/Proto decisions are made based on that unified
   state.

Fix FD leak in UDS
 * Fix a leak when mapping buffers intra-node with cumem IPCs.

Fix crash when mixing buffer registration and graph buffer registration.
 * Separate local and graph registration to avoid crashes when we free
   buffers.

Fix user buffer registration with dmabuf
 * Make ncclSend/ncclRecv communication with buffer registration functional
   on network plugins relying on dmabuf for buffer registration.

Fix crash in IB code caused by uninitialized fields.

Fix non-blocking ncclSend/ncclRecv
 * Fix case where ncclSend/ncclRecv would return ncclSuccess in non-blocking
   mode even though the operation was not enqueued onto the stream.
 * Issue #1495

Various compiler tweaks and fixes
 * PR #758

Fix typo in ncclTopoPrintGraph
 * Issue #1468

src/misc/shmutils.cc

@@ -45,7 +45,7 @@ static void shmHandleInit(int fd, char* shmPath, size_t shmSize, size_t realShmS
   return;
 }
 
-ncclResult_t ncclShmOpen(char* shmPath, size_t shmSize, void** shmPtr, void** devShmPtr, int refcount, ncclShmHandle_t* handle) {
+ncclResult_t ncclShmOpen(char* shmPath, size_t shmPathSize, size_t shmSize, void** shmPtr, void** devShmPtr, int refcount, ncclShmHandle_t* handle) {
   int fd = -1;
   char* hptr = NULL;
   void* dptr = NULL;
@@ -62,7 +62,7 @@ ncclResult_t ncclShmOpen(char* shmPath, size_t shmSize, void** shmPtr, void** de
      * refcount references; when the peer attaches, it should pass -1 to reduce one reference count. When it
      * goes down to 0, unlink should be called in order to delete shared memory file. */
     if (shmPath[0] == '\0') {
-      sprintf(shmPath, "/dev/shm/nccl-XXXXXX");
+      snprintf(shmPath, shmPathSize, "/dev/shm/nccl-XXXXXX");
     retry_mkstemp:
       fd = mkstemp(shmPath);
       if (fd < 0) {
@@ -70,7 +70,7 @@ ncclResult_t ncclShmOpen(char* shmPath, size_t shmSize, void** shmPtr, void** de
           INFO(NCCL_ALL, "mkstemp: Failed to create %s, error: %s (%d) - retrying", shmPath, strerror(errno), errno);
           goto retry_mkstemp;
         }
-        WARN("Error: failed to create shared memory file %p, error %s (%d)", shmPath, strerror(errno), errno);
+        WARN("Error: failed to create shared memory file %s, error %s (%d)", shmPath, strerror(errno), errno);
         ret = ncclSystemError;
         goto fail;
       }