diff --git a/ompi/mca/coll/ucg/Makefile.am b/ompi/mca/coll/ucg/Makefile.am
index e4593d415f4dfebdc74df13b62a1d2319e08ede8..925f41c9f57e40043253a424873cf2eb7f16ae33 100644
--- a/ompi/mca/coll/ucg/Makefile.am
+++ b/ompi/mca/coll/ucg/Makefile.am
@@ -47,6 +47,6 @@ mca_coll_ucg_la_LIBADD = $(coll_ucg_LIBS)
 mca_coll_ucg_la_LDFLAGS = -module -avoid-version $(coll_ucg_LDFLAGS)
 
 noinst_LTLIBRARIES = $(component_noinst)
-libmca_coll_ucg_la_SOURCES = $(coll_ucg_sources)
+libmca_coll_ucg_la_SOURCES =$(coll_ucg_sources)
 libmca_coll_ucg_la_LIBADD = $(coll_ucg_LIBS)
 libmca_coll_ucg_la_LDFLAGS = -module -avoid-version $(coll_ucg_LDFLAGS)
diff --git a/ompi/mca/coll/ucg/coll_ucg.h b/ompi/mca/coll/ucg/coll_ucg.h
index 3bcb266721b5004593ffe2633db289b7ff3f429d..57c154048a5c2d2bcb53c113f717e95ed826cb74 100644
--- a/ompi/mca/coll/ucg/coll_ucg.h
+++ b/ompi/mca/coll/ucg/coll_ucg.h
@@ -41,15 +41,15 @@ typedef struct {
     bool initialized;
 
     /** MCA parameter */
-    int priority;                /* Priority of this component */
-    int verbose;                 /* Verbose level of this component */
-    int max_rcache_size;         /* Max size of request cache */
-    char *disable_coll;          /* JUST FOR TEST, may remove later */
-    char *topology;              /* Topology file path */
+    int priority;               /* Priority of this component */
+    int verbose;                /* Verbose level of this component */
+    int max_rcache_size;        /* Max size of request cache */
+    char *disable_coll;         /* JUST FOR TEST, may remove later */
+    char *topology;             /* Topology file path */
 
     ucg_context_h ucg_context;
 
-    char **blacklist; /** disabled collective operations */
+    char **blacklist; /**  disabled collective operations */
 } mca_coll_ucg_component_t;
 OMPI_MODULE_DECLSPEC extern mca_coll_ucg_component_t mca_coll_ucg_component;
 
@@ -167,7 +167,7 @@ int mca_coll_ucg_ibcast(void *buffer, int count, MPI_Datatype datatype, int root
                         mca_coll_base_module_t *module);
 
 int mca_coll_ucg_ibcast_cache(void *buffer, int count, MPI_Datatype datatype, int root,
-                              ompi_communicator_t *comm, ompi_request_t **request,
+                            ompi_communicator_t *comm, ompi_request_t **request,
                               mca_coll_base_module_t *module);
 
 int mca_coll_ucg_bcast_init(void *buffer, int count, MPI_Datatype datatype, int root,
@@ -186,10 +186,10 @@ int mca_coll_ucg_alltoallv_cache(const void *sbuf, const int *scounts, const int
                                  ompi_communicator_t *comm, mca_coll_base_module_t *module);
 
 int mca_coll_ucg_ialltoallv(const void *sbuf, const int *scounts, const int *sdispls,
-                            ompi_datatype_t *sdtype, void *rbuf, const int *rcounts,
-                            const int *rdispls, ompi_datatype_t *rdtype,
-                            ompi_communicator_t *comm, ompi_request_t **request,
-                            mca_coll_base_module_t *module);
+                           ompi_datatype_t *sdtype, void *rbuf, const int *rcounts,
+                           const int *rdispls, ompi_datatype_t *rdtype,
+                           ompi_communicator_t *comm, ompi_request_t **request,
+                           mca_coll_base_module_t *module);
 
 int mca_coll_ucg_ialltoallv_cache(const void *sbuf, const int *scounts, const int *sdispls,
                                   ompi_datatype_t *sdtype, void *rbuf, const int *rcounts,
@@ -203,7 +203,7 @@ int mca_coll_ucg_alltoallv_init(const void *sbuf, const int *scounts, const int
                                 ompi_communicator_t *comm, ompi_info_t *info,
                                 ompi_request_t **request, mca_coll_base_module_t *module);
 
-/*barrier */
+/* barrier */
 int mca_coll_ucg_barrier(ompi_communicator_t *comm, mca_coll_base_module_t *module);
 
 int mca_coll_ucg_barrier_cache(ompi_communicator_t *comm, mca_coll_base_module_t *module);
@@ -217,7 +217,7 @@ int mca_coll_ucg_ibarrier_cache(ompi_communicator_t *comm, ompi_request_t **requ
 int mca_coll_ucg_barrier_init(ompi_communicator_t *comm, ompi_info_t *info,
                               ompi_request_t **request, mca_coll_base_module_t *module);
 
-/*scatterv */
+/* scatterv */
 int mca_coll_ucg_scatterv(const void *sbuf, const int *scounts, const int *disps,
                           ompi_datatype_t *sdtype, void *rbuf, int rcount,
                           ompi_datatype_t *rdtype, int root,
diff --git a/ompi/mca/coll/ucg/coll_ucg_allgatherv.c b/ompi/mca/coll/ucg/coll_ucg_allgatherv.c
index 0bb25cba9ae7feed1dfbfd4cea79856c2a4abc60..eed0d4b212fc438337dd2bd0ce8af049dc57e025 100644
--- a/ompi/mca/coll/ucg/coll_ucg_allgatherv.c
+++ b/ompi/mca/coll/ucg/coll_ucg_allgatherv.c
@@ -1,7 +1,7 @@
 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
 /*
  * Copyright (c) 2022-2022 Huawei Technologies Co., Ltd.
- *                                All rights reserved.
+ *                         All rights reserved.
  * COPYRIGHT$
  *
  * Additional copyrights may follow
diff --git a/ompi/mca/coll/ucg/coll_ucg_gatherv.c b/ompi/mca/coll/ucg/coll_ucg_gatherv.c
index c1c347d98997ebb639d373c3bf674ce8f40d44c6..6016e68b036b2dd57ff927d7b51e3e1a11e73d61 100644
--- a/ompi/mca/coll/ucg/coll_ucg_gatherv.c
+++ b/ompi/mca/coll/ucg/coll_ucg_gatherv.c
@@ -228,8 +228,8 @@ int mca_coll_ucg_igatherv_cache(const void *sbuf, int sendcount,
 fallback:
     UCG_DEBUG("fallback igatherv");
     return ucg_module->previous_igatherv(sbuf, sendcount, sdtype, rbuf,
-                                         recvcounts, disps, rdtype, root, comm, request,
-                                         ucg_module->previous_gatherv_module);
+                                          recvcounts, disps, rdtype, root, comm, request,
+                                          ucg_module->previous_gatherv_module);
 }
 
 int mca_coll_ucg_gatherv_init(const void *sbuf, int sendcount,
diff --git a/ompi/mca/coll/ucg/coll_ucg_module.c b/ompi/mca/coll/ucg/coll_ucg_module.c
index 8b874edb54c70c3bf0689ed58e45c58fc88dd700..9fdda8b08f1efc1989d526ba4eb8b2513fb9c672 100644
--- a/ompi/mca/coll/ucg/coll_ucg_module.c
+++ b/ompi/mca/coll/ucg/coll_ucg_module.c
@@ -17,17 +17,17 @@
 #include "ompi/mca/pml/pml.h"
 #include "ompi/mca/pml/ucx/pml_ucx.h"
 
-/* Ensure coll ucg can be dlopened if global var "ompi_pml_ucx" is not existed */
+/* Ensure coll ucg can be dlopened if global var "ompi_pml_ucx" is not existed*/
 mca_pml_ucx_module_t ompi_pml_ucx __attribute__((weak));
 
 #define MCA_COLL_UCG_SET_HANDLER(_api) \
     if (mca_coll_ucg_is_api_enable(#_api)) { \
-        module->super.coll_ ## _api = mca_coll_ucg_ ## _api; \
+         module->super.coll_ ## _api = mca_coll_ucg_ ## _api;\
     }
 
 #define MCA_COLL_UCG_SET_CACHE_HANDLER(_api) \
     if (mca_coll_ucg_is_api_enable(#_api)) { \
-        module->super.coll_ ## _api = mca_coll_ucg_ ## _api ## _cache; \
+         module->super.coll_ ## _api = mca_coll_ucg_ ## _api ## _cache; \
     }
 
 #define MCA_COLL_UCG_SAVE_FALLBACK(_api) \
@@ -90,8 +90,8 @@ static ucg_status_t mca_coll_ucg_oob_blocking_allgather(const void *sendbuf,
         //bcast recvbuf to all rank
         for (i = 1; i < size; i++) {
             rc = MCA_PML_CALL(send((char *)recvbuf, size * count, MPI_CHAR, i,
-                              MCA_COLL_BASE_TAG_ALLGATHER,
-                              MCA_PML_BASE_SEND_STANDARD, comm));
+                                   MCA_COLL_BASE_TAG_ALLGATHER,
+                                   MCA_PML_BASE_SEND_STANDARD, comm));
             if (rc != OMPI_SUCCESS) {
                 goto out;
             }
@@ -99,15 +99,15 @@ static ucg_status_t mca_coll_ucg_oob_blocking_allgather(const void *sendbuf,
     } else {
         //send data to rank 0
         rc = MCA_PML_CALL(send((char *)sendbuf, count, MPI_CHAR, 0, MCA_COLL_BASE_TAG_ALLGATHER,
-                          MCA_PML_BASE_SEND_STANDARD, comm));
+                               MCA_PML_BASE_SEND_STANDARD, comm));
         if (rc != OMPI_SUCCESS) {
             goto out;
         }
 
         //recv gather data from rank 0
         rc = MCA_PML_CALL(recv((char *)recvbuf, size * count, MPI_CHAR, 0,
-                          MCA_COLL_BASE_TAG_ALLGATHER, comm,
-                          MPI_STATUS_IGNORE));
+                               MCA_COLL_BASE_TAG_ALLGATHER, comm,
+                               MPI_STATUS_IGNORE));
         if (rc != OMPI_SUCCESS) {
             goto out;
         }
@@ -575,7 +575,7 @@ static void mca_coll_ucg_module_construct(mca_coll_ucg_module_t *module)
         MCA_COLL_UCG_SET_CACHE_HANDLER(allreduce);
         MCA_COLL_UCG_SET_CACHE_HANDLER(barrier);
         MCA_COLL_UCG_SET_CACHE_HANDLER(bcast);
-        // MCA_COLL_UCG_SET_CACHE_HANDLER(alltoallv);
+        MCA_COLL_UCG_SET_CACHE_HANDLER(alltoallv);
         // MCA_COLL_UCG_SET_CACHE_HANDLER(scatterv);
         MCA_COLL_UCG_SET_CACHE_HANDLER(gatherv);
         MCA_COLL_UCG_SET_CACHE_HANDLER(allgatherv);
@@ -583,7 +583,7 @@ static void mca_coll_ucg_module_construct(mca_coll_ucg_module_t *module)
         MCA_COLL_UCG_SET_CACHE_HANDLER(iallreduce);
         MCA_COLL_UCG_SET_CACHE_HANDLER(ibarrier);
         MCA_COLL_UCG_SET_CACHE_HANDLER(ibcast);
-        // MCA_COLL_UCG_SET_CACHE_HANDLER(ialltoallv);
+        MCA_COLL_UCG_SET_CACHE_HANDLER(ialltoallv);
         MCA_COLL_UCG_SET_CACHE_HANDLER(iscatterv);
         MCA_COLL_UCG_SET_CACHE_HANDLER(igatherv);
         MCA_COLL_UCG_SET_CACHE_HANDLER(iallgatherv);
@@ -591,7 +591,7 @@ static void mca_coll_ucg_module_construct(mca_coll_ucg_module_t *module)
         MCA_COLL_UCG_SET_HANDLER(allreduce);
         MCA_COLL_UCG_SET_HANDLER(barrier);
         MCA_COLL_UCG_SET_HANDLER(bcast);
-        // MCA_COLL_UCG_SET_HANDLER(alltoallv);
+        MCA_COLL_UCG_SET_HANDLER(alltoallv);
         // MCA_COLL_UCG_SET_HANDLER(scatterv);
         MCA_COLL_UCG_SET_HANDLER(gatherv);
         MCA_COLL_UCG_SET_HANDLER(allgatherv);
@@ -599,7 +599,7 @@ static void mca_coll_ucg_module_construct(mca_coll_ucg_module_t *module)
         MCA_COLL_UCG_SET_HANDLER(iallreduce);
         MCA_COLL_UCG_SET_HANDLER(ibarrier);
         MCA_COLL_UCG_SET_HANDLER(ibcast);
-        // MCA_COLL_UCG_SET_HANDLER(ialltoallv);
+        MCA_COLL_UCG_SET_HANDLER(ialltoallv);
         MCA_COLL_UCG_SET_HANDLER(iscatterv);
         MCA_COLL_UCG_SET_HANDLER(igatherv);
         MCA_COLL_UCG_SET_HANDLER(iallgatherv);
@@ -608,7 +608,7 @@ static void mca_coll_ucg_module_construct(mca_coll_ucg_module_t *module)
     MCA_COLL_UCG_SET_HANDLER(allreduce_init);
     MCA_COLL_UCG_SET_HANDLER(barrier_init);
     MCA_COLL_UCG_SET_HANDLER(bcast_init);
-    // MCA_COLL_UCG_SET_HANDLER(alltoallv_init);
+    MCA_COLL_UCG_SET_HANDLER(alltoallv_init);
     MCA_COLL_UCG_SET_HANDLER(scatterv_init);
     MCA_COLL_UCG_SET_HANDLER(gatherv_init);
     MCA_COLL_UCG_SET_HANDLER(allgatherv_init);
diff --git a/ompi/mca/coll/ucg/coll_ucg_request.c b/ompi/mca/coll/ucg/coll_ucg_request.c
index 3cc082367a10477d859fe2cffc3aedc1ec7c3754..a39922adbc4663cf225a60e5ec2b62b7ad4c5745 100644
--- a/ompi/mca/coll/ucg/coll_ucg_request.c
+++ b/ompi/mca/coll/ucg/coll_ucg_request.c
@@ -210,7 +210,7 @@ void mca_coll_ucg_rpool_cleanup(void)
 int mca_coll_ucg_subargs_pool_init(uint32_t size)
 {
     OBJ_CONSTRUCT(&mca_coll_ucg_subargs_pool.flist, opal_free_list_t);
-    int rc = opal_free_list_init(&mca_coll_ucg_subargs_pool.flist, 
+    int rc = opal_free_list_init(&mca_coll_ucg_subargs_pool.flist,
                                  sizeof(mca_coll_ucg_subargs_t) + 4 * size * sizeof(int),
                                  opal_cache_line_size, OBJ_CLASS(mca_coll_ucg_subargs_t),
                                  0, 0,
@@ -367,7 +367,7 @@ void mca_coll_ucg_rcache_mark_cacheable(mca_coll_ucg_req_t *coll_req,
                                         mca_coll_ucg_args_t *key)
 {
     OBJ_CONSTRUCT(&coll_req->list, opal_list_item_t);
-    mca_coll_ucg_rcache_coll_req_args_init(&coll_req->args, key);    // deep copy
+    mca_coll_ucg_rcache_coll_req_args_init(&coll_req->args, key);   // deep copy
     ucg_coll_ucg_rcache_ref(coll_req);
     coll_req->cacheable = true;
     return;
@@ -577,7 +577,7 @@ int mca_coll_ucg_request_common_init(mca_coll_ucg_req_t *coll_req,
     ucg_request_info_t *info = &coll_req->info;
     info->field_mask = 0;
     if (nb || persistent) {
-        //For those case, the request is not done in the current call stack.
+        // For those case, the request is not done in the current call stack.
         info->field_mask |= UCG_REQUEST_INFO_FIELD_CB;
         info->complete_cb.cb = mca_coll_ucg_request_complete;
         info->complete_cb.arg = coll_req;
@@ -622,7 +622,7 @@ int mca_coll_ucg_request_execute(mca_coll_ucg_req_t *coll_req)
 
     int count = 0;
     while (UCG_INPROGRESS == (status = ucg_request_test(ucg_req))) {
-        //TODO: test wether opal_progress() can be removed
+        // TODO: test wether opal_progress() can be removed
         if (++count % 1000 == 0) {
             opal_progress();
         }
diff --git a/ompi/mca/coll/ucg/coll_ucg_request.h b/ompi/mca/coll/ucg/coll_ucg_request.h
index f9b1aa9458c5cee515d023bd425644c2044594d7..157329d1c0293590e16118b3066d877b1cd981ce 100644
--- a/ompi/mca/coll/ucg/coll_ucg_request.h
+++ b/ompi/mca/coll/ucg/coll_ucg_request.h
@@ -58,12 +58,12 @@
     } while(0)
 
 /*
- * Non-blocking execution pattern:
+ * Non-blockingexecution pattern:
  *  1. Initialize coll request
  *  2. Non-blocking execute
  *  3. Mark coll request cacheable
  *  4. Assign ompi request
- * If any failure, go to fallback.
+ * If any failure, goto fallback.
  */
 #define MCA_COLL_UCG_REQUEST_PATTERN_NB(_ompi_req, _cache_key, _coll_request_init, ...) \
     do {\
@@ -126,12 +126,12 @@ typedef struct {
 typedef struct {
     opal_free_list_item_t super;
     int buf[];
-}mca_coll_ucg_subargs_t;
+} mca_coll_ucg_subargs_t;
 OBJ_CLASS_DECLARATION(mca_coll_ucg_subargs_t);
 
 typedef struct {
     opal_free_list_t flist;
-}mca_coll_ucg_subargs_pool_t;
+} mca_coll_ucg_subargs_pool_t;
 
 typedef struct mca_coll_bcast_args {
     void *buffer;
diff --git a/ompi/mca/coll/ucg/configure.m4 b/ompi/mca/coll/ucg/configure.m4
index fef730bc9063e70e858866b6cc1ca7df38219b2d..31b33095a371637871e4e3441e9c7ad7b8fe4648 100644
--- a/ompi/mca/coll/ucg/configure.m4
+++ b/ompi/mca/coll/ucg/configure.m4
@@ -2,9 +2,9 @@
 # Copyright (c) 2022-2022 Huawei Technologies Co., Ltd.
 #                         All rights reserved.
 # $COPYRIGHT$
-# 
+#
 # Additional copyrights may follow
-# 
+#
 # $HEADER$
 #
 
diff --git a/ompi/mca/coll/ucg/owner.txt b/ompi/mca/coll/ucg/owner.txt
index b315445dcd4b2b919d6c00e975f31944d4184cb0..9c08c938c34a5a9e7ebf057549c0d4ad4b2493ad 100644
--- a/ompi/mca/coll/ucg/owner.txt
+++ b/ompi/mca/coll/ucg/owner.txt
@@ -1,5 +1,5 @@
-# 
-# owner/status file 
+#
+# owner/status file
 # owner: institution that is responsible for this package
 # status: e.g. active, maintenance, unmaintained
 #