diff --git a/src/coll_score/ucc_coll_score_map.c b/src/coll_score/ucc_coll_score_map.c
index 9267a77478..037476efb2 100644
--- a/src/coll_score/ucc_coll_score_map.c
+++ b/src/coll_score/ucc_coll_score_map.c
@@ -74,10 +74,9 @@ void ucc_coll_score_free_map(ucc_score_map_t *map)
     ucc_free(map);
 }
 
-static
-ucc_status_t ucc_coll_score_map_lookup(ucc_score_map_t      *map,
-                                       ucc_base_coll_args_t *bargs,
-                                       ucc_msg_range_t     **range)
+static ucc_status_t ucc_coll_score_map_lookup(ucc_score_map_t *map,
+                                              ucc_base_coll_args_t *bargs,
+                                              ucc_msg_range_t **range)
 {
     ucc_memory_type_t mt      = ucc_coll_args_mem_type(&bargs->args,
                                                        map->team_rank);
@@ -85,11 +84,12 @@ ucc_status_t ucc_coll_score_map_lookup(ucc_score_map_t      *map,
     size_t            msgsize = ucc_coll_args_msgsize(&bargs->args,
                                                       map->team_rank,
                                                       map->team_size);
-    ucc_list_link_t  *list;
-    ucc_msg_range_t  *r;
+    ucc_list_link_t *list;
+    ucc_msg_range_t *r;
 
     if (mt == UCC_MEMORY_TYPE_ASYMMETRIC) {
         /* TODO */
+        ucc_debug("asymmetric memory type is not supported");
         return UCC_ERR_NOT_SUPPORTED;
     } else if (mt == UCC_MEMORY_TYPE_NOT_APPLY) {
         /* Temporary solution: for Barrier, Fanin, Fanout - use
@@ -122,7 +122,9 @@ ucc_status_t ucc_coll_init(ucc_score_map_t      *map,
     ucc_status_t      status;
 
     status = ucc_coll_score_map_lookup(map, bargs, &r);
-    if (UCC_OK != status) {
+    if (ucc_unlikely(UCC_OK != status)) {
+        ucc_debug("coll_score_map lookup failed %d (%s)",
+                   status, ucc_status_string(status));
         return status;
     }
 
diff --git a/src/core/ucc_coll.c b/src/core/ucc_coll.c
index 8cf3658570..6cb0426389 100644
--- a/src/core/ucc_coll.c
+++ b/src/core/ucc_coll.c
@@ -280,20 +280,19 @@ UCC_CORE_PROFILE_FUNC(ucc_status_t, ucc_collective_init,
 
 print_trace:
     *request = &task->super;
-    if (ucc_global_config.coll_trace.log_level >= UCC_LOG_LEVEL_DIAG) {
+    if (ucc_unlikely(ucc_global_config.coll_trace.log_level >=
+                     UCC_LOG_LEVEL_DIAG)) {
         char coll_str[256];
         ucc_coll_str(task, coll_str, sizeof(coll_str),
                      ucc_global_config.coll_trace.log_level);
-        if (ucc_global_config.coll_trace.log_level <= UCC_LOG_LEVEL_DEBUG) {
+        if (ucc_global_config.coll_trace.log_level <= UCC_LOG_LEVEL_INFO) {
             if (team->rank == 0) {
                 ucc_log_component_collective_trace(
                     ucc_global_config.coll_trace.log_level, "coll_init: %s",
                     coll_str);
             }
         } else {
-            ucc_log_component_collective_trace(
-                ucc_global_config.coll_trace.log_level, "coll_init: %s",
-                coll_str);
+            ucc_coll_trace_debug("coll_init: %s", coll_str);
         }
     }
 
diff --git a/src/utils/ucc_coll_utils.c b/src/utils/ucc_coll_utils.c
index 75a49400e2..533a9e4fb3 100644
--- a/src/utils/ucc_coll_utils.c
+++ b/src/utils/ucc_coll_utils.c
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2021-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * Copyright (c) 2021-2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
  *
  * See file LICENSE for terms.
  */
@@ -56,7 +56,8 @@ static inline int
 ucc_coll_args_is_mem_symmetric(const ucc_coll_args_t *args,
                                ucc_rank_t rank)
 {
-    ucc_rank_t             root = args->root;
+    ucc_rank_t root = args->root;
+
     if (UCC_IS_INPLACE(*args)) {
         return 1;
     }
@@ -93,7 +94,7 @@ ucc_coll_args_is_mem_symmetric(const ucc_coll_args_t *args,
     return 0;
 }
 
-int ucc_coll_args_is_predefined_dt(ucc_coll_args_t *args, ucc_rank_t rank)
+int ucc_coll_args_is_predefined_dt(const ucc_coll_args_t *args, ucc_rank_t rank)
 {
     switch (args->coll_type) {
     case UCC_COLL_TYPE_BARRIER:
@@ -160,7 +161,7 @@ int ucc_coll_args_is_predefined_dt(ucc_coll_args_t *args, ucc_rank_t rank)
 ucc_memory_type_t ucc_coll_args_mem_type(const ucc_coll_args_t *args,
                                          ucc_rank_t rank)
 {
-    ucc_rank_t             root = args->root;
+    ucc_rank_t root = args->root;
 
     if (!ucc_coll_args_is_mem_symmetric(args, rank)) {
         return UCC_MEMORY_TYPE_ASYMMETRIC;
diff --git a/src/utils/ucc_coll_utils.h b/src/utils/ucc_coll_utils.h
index c5cb2ef392..5b24f19cf2 100644
--- a/src/utils/ucc_coll_utils.h
+++ b/src/utils/ucc_coll_utils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2021-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * Copyright (c) 2021-2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
  *
  * See file LICENSE for terms.
  */
@@ -332,6 +332,6 @@ static inline size_t ucc_buffer_block_offset_aligned(size_t total_count,
    @param [in] args        pointer to the collective args.
    @param [in] rank        rank to check, used only for rooted collective
                            operations. */
-int ucc_coll_args_is_predefined_dt(ucc_coll_args_t *args, ucc_rank_t rank);
+int ucc_coll_args_is_predefined_dt(const ucc_coll_args_t *args, ucc_rank_t rank);
 
 #endif