diff --git a/ompi/mca/coll/hcoll/coll_hcoll.h b/ompi/mca/coll/hcoll/coll_hcoll.h
index 25a60b3922..980f0ebb2d 100644
--- a/ompi/mca/coll/hcoll/coll_hcoll.h
+++ b/ompi/mca/coll/hcoll/coll_hcoll.h
@@ -137,8 +137,12 @@ struct mca_coll_hcoll_module_t {
     mca_coll_base_module_t *previous_ibarrier_module;
     mca_coll_base_module_iallgather_fn_t previous_iallgather;
     mca_coll_base_module_t *previous_iallgather_module;
+    mca_coll_base_module_iallgatherv_fn_t previous_iallgatherv;
+    mca_coll_base_module_t *previous_iallgatherv_module;
     mca_coll_base_module_iallreduce_fn_t previous_iallreduce;
     mca_coll_base_module_t *previous_iallreduce_module;
+    mca_coll_base_module_ireduce_fn_t previous_ireduce;
+    mca_coll_base_module_t *previous_ireduce_module;
     mca_coll_base_module_igatherv_fn_t previous_igatherv;
     mca_coll_base_module_t *previous_igatherv_module;
     mca_coll_base_module_ialltoall_fn_t previous_ialltoall;
@@ -175,7 +179,15 @@ int mca_coll_hcoll_allgather(void *sbuf, int scount,
                             struct ompi_communicator_t *comm,
                             mca_coll_base_module_t *module);
 
-int mca_coll_hcoll_gather(void *sbuf, int scount,
+int mca_coll_hcoll_allgatherv(const void *sbuf, int scount,
+                            struct ompi_datatype_t *sdtype,
+                            void *rbuf, const int *rcount,
+                            const int *displs,
+                            struct ompi_datatype_t *rdtype,
+                            struct ompi_communicator_t *comm,
+                            mca_coll_base_module_t *module);
+
+int mca_coll_hcoll_gather(const void *sbuf, int scount,
                           struct ompi_datatype_t *sdtype,
                           void *rbuf, int rcount,
                           struct ompi_datatype_t *rdtype,
@@ -189,7 +201,14 @@ int mca_coll_hcoll_allreduce(void *sbuf, void *rbuf, int count,
                             struct ompi_communicator_t *comm,
                             mca_coll_base_module_t *module);
 
-int mca_coll_hcoll_alltoall(void *sbuf, int scount,
+int mca_coll_hcoll_reduce(const void *sbuf, void *rbuf, int count,
+                            struct ompi_datatype_t *dtype,
+                            struct ompi_op_t *op,
+                            int root,
+                            struct ompi_communicator_t *comm,
+                            mca_coll_base_module_t *module);
+
+int mca_coll_hcoll_alltoall(const void *sbuf, int scount,
                            struct ompi_datatype_t *sdtype,
                            void* rbuf, int rcount,
                            struct ompi_datatype_t *rdtype,
@@ -231,14 +250,31 @@ int mca_coll_hcoll_iallgather(void *sbuf, int scount,
                             ompi_request_t** request,
                             mca_coll_base_module_t *module);
 
-int mca_coll_hcoll_iallreduce(void *sbuf, void *rbuf, int count,
+int mca_coll_hcoll_iallgatherv(const void *sbuf, int scount,
+                            struct ompi_datatype_t *sdtype,
+                            void *rbuf, const int *rcount,
+                            const int *displs,
+                            struct ompi_datatype_t *rdtype,
+                            struct ompi_communicator_t *comm,
+                            ompi_request_t** request,
+                            mca_coll_base_module_t *module);
+
+int mca_coll_hcoll_iallreduce(const void *sbuf, void *rbuf, int count,
+                            struct ompi_datatype_t *dtype,
+                            struct ompi_op_t *op,
+                            struct ompi_communicator_t *comm,
+                            ompi_request_t** request,
+                            mca_coll_base_module_t *module);
+
+int mca_coll_hcoll_ireduce(const void *sbuf, void *rbuf, int count,
                             struct ompi_datatype_t *dtype,
                             struct ompi_op_t *op,
+                            int root,
                             struct ompi_communicator_t *comm,
                             ompi_request_t** request,
                             mca_coll_base_module_t *module);
 
-int mca_coll_hcoll_ialltoall(void *sbuf, int scount,
+int mca_coll_hcoll_ialltoall(const void *sbuf, int scount,
                             struct ompi_datatype_t *sdtype,
                             void* rbuf, int rcount,
                             struct ompi_datatype_t *rdtype,
@@ -256,7 +292,7 @@ int mca_coll_hcoll_ialltoallv(void *sbuf, int *scounts,
                             ompi_request_t **req,
                             mca_coll_base_module_t *module);
 
-int mca_coll_hcoll_igatherv(void* sbuf, int scount,
+int mca_coll_hcoll_igatherv(const void* sbuf, int scount,
                             struct ompi_datatype_t *sdtype,
                             void* rbuf, int *rcounts, int *displs,
                             struct ompi_datatype_t *rdtype,
diff --git a/ompi/mca/coll/hcoll/coll_hcoll_module.c b/ompi/mca/coll/hcoll/coll_hcoll_module.c
index f1af6931b1..3a118b3d0b 100644
--- a/ompi/mca/coll/hcoll/coll_hcoll_module.c
+++ b/ompi/mca/coll/hcoll/coll_hcoll_module.c
@@ -41,12 +41,15 @@ static void mca_coll_hcoll_module_clear(mca_coll_hcoll_module_t *hcoll_module)
     hcoll_module->previous_alltoall   = NULL;
     hcoll_module->previous_alltoallv  = NULL;
     hcoll_module->previous_alltoallw  = NULL;
+    hcoll_module->previous_reduce     = NULL;
     hcoll_module->previous_reduce_scatter  = NULL;
     hcoll_module->previous_ibarrier    = NULL;
     hcoll_module->previous_ibcast      = NULL;
     hcoll_module->previous_iallreduce  = NULL;
     hcoll_module->previous_iallgather  = NULL;
+    hcoll_module->previous_iallgatherv = NULL;
     hcoll_module->previous_igatherv    = NULL;
+    hcoll_module->previous_ireduce     = NULL;
 }
 
 static void mca_coll_hcoll_module_construct(mca_coll_hcoll_module_t *hcoll_module)
@@ -80,17 +83,21 @@ static void mca_coll_hcoll_module_destruct(mca_coll_hcoll_module_t *hcoll_module
         OBJ_RELEASE(hcoll_module->previous_bcast_module);
         OBJ_RELEASE(hcoll_module->previous_allreduce_module);
         OBJ_RELEASE(hcoll_module->previous_allgather_module);
+        OBJ_RELEASE(hcoll_module->previous_allgatherv_module);
         OBJ_RELEASE(hcoll_module->previous_gatherv_module);
         OBJ_RELEASE(hcoll_module->previous_alltoall_module);
         OBJ_RELEASE(hcoll_module->previous_alltoallv_module);
+        OBJ_RELEASE(hcoll_module->previous_reduce_module);
 
         OBJ_RELEASE(hcoll_module->previous_ibarrier_module);
         OBJ_RELEASE(hcoll_module->previous_ibcast_module);
         OBJ_RELEASE(hcoll_module->previous_iallreduce_module);
         OBJ_RELEASE(hcoll_module->previous_iallgather_module);
+        OBJ_RELEASE(hcoll_module->previous_iallgatherv_module);
         OBJ_RELEASE(hcoll_module->previous_igatherv_module);
         OBJ_RELEASE(hcoll_module->previous_ialltoall_module);
         OBJ_RELEASE(hcoll_module->previous_ialltoallv_module);
+        OBJ_RELEASE(hcoll_module->previous_ireduce_module);
 
         /*
         OBJ_RELEASE(hcoll_module->previous_allgatherv_module);
@@ -127,7 +134,9 @@ static int mca_coll_hcoll_save_coll_handlers(mca_coll_hcoll_module_t *hcoll_modu
     HCOL_SAVE_PREV_COLL_API(barrier);
     HCOL_SAVE_PREV_COLL_API(bcast);
     HCOL_SAVE_PREV_COLL_API(allreduce);
+    HCOL_SAVE_PREV_COLL_API(reduce);
     HCOL_SAVE_PREV_COLL_API(allgather);
+    HCOL_SAVE_PREV_COLL_API(allgatherv);
     HCOL_SAVE_PREV_COLL_API(gatherv);
     HCOL_SAVE_PREV_COLL_API(alltoall);
     HCOL_SAVE_PREV_COLL_API(alltoallv);
@@ -135,7 +144,9 @@ static int mca_coll_hcoll_save_coll_handlers(mca_coll_hcoll_module_t *hcoll_modu
     HCOL_SAVE_PREV_COLL_API(ibarrier);
     HCOL_SAVE_PREV_COLL_API(ibcast);
     HCOL_SAVE_PREV_COLL_API(iallreduce);
+    HCOL_SAVE_PREV_COLL_API(ireduce);
     HCOL_SAVE_PREV_COLL_API(iallgather);
+    HCOL_SAVE_PREV_COLL_API(iallgatherv);
     HCOL_SAVE_PREV_COLL_API(igatherv);
     HCOL_SAVE_PREV_COLL_API(ialltoall);
     HCOL_SAVE_PREV_COLL_API(ialltoallv);
@@ -312,14 +323,26 @@ mca_coll_hcoll_comm_query(struct ompi_communicator_t *comm, int *priority)
     hcoll_module->super.coll_barrier = hcoll_collectives.coll_barrier ? mca_coll_hcoll_barrier : NULL;
     hcoll_module->super.coll_bcast = hcoll_collectives.coll_bcast ? mca_coll_hcoll_bcast : NULL;
     hcoll_module->super.coll_allgather = hcoll_collectives.coll_allgather ? mca_coll_hcoll_allgather : NULL;
+    hcoll_module->super.coll_allgatherv = hcoll_collectives.coll_allgatherv ? mca_coll_hcoll_allgatherv : NULL;
     hcoll_module->super.coll_allreduce = hcoll_collectives.coll_allreduce ? mca_coll_hcoll_allreduce : NULL;
     hcoll_module->super.coll_alltoall = hcoll_collectives.coll_alltoall ? mca_coll_hcoll_alltoall : NULL;
     hcoll_module->super.coll_alltoallv = hcoll_collectives.coll_alltoallv ? mca_coll_hcoll_alltoallv : NULL;
     hcoll_module->super.coll_gatherv = hcoll_collectives.coll_gatherv ? mca_coll_hcoll_gatherv : NULL;
+    hcoll_module->super.coll_reduce = hcoll_collectives.coll_reduce ? mca_coll_hcoll_reduce : NULL;
     hcoll_module->super.coll_ibarrier = hcoll_collectives.coll_ibarrier ? mca_coll_hcoll_ibarrier : NULL;
     hcoll_module->super.coll_ibcast = hcoll_collectives.coll_ibcast ? mca_coll_hcoll_ibcast : NULL;
     hcoll_module->super.coll_iallgather = hcoll_collectives.coll_iallgather ? mca_coll_hcoll_iallgather : NULL;
+#if HCOLL_API >= HCOLL_VERSION(3,5)
+    hcoll_module->super.coll_iallgatherv = hcoll_collectives.coll_iallgatherv ? mca_coll_hcoll_iallgatherv : NULL;
+#else
+    hcoll_module->super.coll_iallgatherv = NULL;
+#endif
     hcoll_module->super.coll_iallreduce = hcoll_collectives.coll_iallreduce ? mca_coll_hcoll_iallreduce : NULL;
+#if HCOLL_API >= HCOLL_VERSION(3,5)
+    hcoll_module->super.coll_ireduce = hcoll_collectives.coll_ireduce ? mca_coll_hcoll_ireduce : NULL;
+#else
+    hcoll_module->super.coll_ireduce = NULL;
+#endif
     hcoll_module->super.coll_gather = /*hcoll_collectives.coll_gather ? mca_coll_hcoll_gather :*/ NULL;
     hcoll_module->super.coll_igatherv = hcoll_collectives.coll_igatherv ? mca_coll_hcoll_igatherv : NULL;
     hcoll_module->super.coll_ialltoall = /*hcoll_collectives.coll_ialltoall ? mca_coll_hcoll_ialltoall : */ NULL;
diff --git a/ompi/mca/coll/hcoll/coll_hcoll_ops.c b/ompi/mca/coll/hcoll/coll_hcoll_ops.c
index 32e7612d2f..2617759272 100644
--- a/ompi/mca/coll/hcoll/coll_hcoll_ops.c
+++ b/ompi/mca/coll/hcoll/coll_hcoll_ops.c
@@ -97,7 +97,52 @@ int mca_coll_hcoll_allgather(void *sbuf, int scount,
     return rc;
 }
 
-int mca_coll_hcoll_gather(void *sbuf, int scount,
+int mca_coll_hcoll_allgatherv(const void *sbuf, int scount,
+                            struct ompi_datatype_t *sdtype,
+                            void *rbuf, const int *rcount,
+                            const int *displs,
+                            struct ompi_datatype_t *rdtype,
+                            struct ompi_communicator_t *comm,
+                            mca_coll_base_module_t *module)
+{
+    dte_data_representation_t stype;
+    dte_data_representation_t rtype;
+    int rc;
+    HCOL_VERBOSE(20,"RUNNING HCOL ALLGATHERV");
+    mca_coll_hcoll_module_t *hcoll_module = (mca_coll_hcoll_module_t*)module;
+    stype = ompi_dtype_2_dte_dtype(sdtype);
+    rtype = ompi_dtype_2_dte_dtype(rdtype);
+    if (OPAL_UNLIKELY((HCOL_DTE_IS_ZERO(stype) || HCOL_DTE_IS_ZERO(rtype)
+                        || HCOL_DTE_IS_COMPLEX(stype) || HCOL_DTE_IS_COMPLEX(rtype)))
+                        && mca_coll_hcoll_component.hcoll_datatype_fallback){
+        /*If we are here then datatype is not simple predefined datatype */
+        /*In future we need to add more complex mapping to the dte_data_representation_t */
+        /* Now use fallback */
+        HCOL_VERBOSE(20,"Ompi_datatype is not supported: sdtype = %s, rdtype = %s; calling fallback allgatherv;",
+                     sdtype->super.name,
+                     rdtype->super.name);
+        rc = hcoll_module->previous_allgatherv(sbuf,scount,sdtype,
+                                             rbuf,rcount,
+                                             displs, 
+                                             rdtype,
+                                             comm,
+                                             hcoll_module->previous_allgatherv_module);
+        return rc;
+    }
+    rc = hcoll_collectives.coll_allgatherv((void *)sbuf,scount,stype,rbuf,rcount,displs,rtype,hcoll_module->hcoll_context);
+    if (HCOLL_SUCCESS != rc){
+        HCOL_VERBOSE(20,"RUNNING FALLBACK ALLGATHERV");
+        rc = hcoll_module->previous_allgatherv(sbuf,scount,sdtype,
+                                             rbuf,rcount,
+                                             displs, 
+                                             rdtype,
+                                             comm,
+                                             hcoll_module->previous_allgatherv_module);
+    }
+    return rc;
+}
+
+int mca_coll_hcoll_gather(const void *sbuf, int scount,
                           struct ompi_datatype_t *sdtype,
                           void *rbuf, int rcount,
                           struct ompi_datatype_t *rdtype,
@@ -186,7 +231,59 @@ int mca_coll_hcoll_allreduce(void *sbuf, void *rbuf, int count,
     return rc;
 }
 
-int mca_coll_hcoll_alltoall(void *sbuf, int scount,
+int mca_coll_hcoll_reduce(const void *sbuf, void *rbuf, int count,
+                            struct ompi_datatype_t *dtype,
+                            struct ompi_op_t *op,
+                            int root,
+                            struct ompi_communicator_t *comm,
+                            mca_coll_base_module_t *module)
+{
+    dte_data_representation_t Dtype;
+    hcoll_dte_op_t *Op;
+    int rc;
+    HCOL_VERBOSE(20,"RUNNING HCOL REDUCE");
+    mca_coll_hcoll_module_t *hcoll_module = (mca_coll_hcoll_module_t*)module;
+    Dtype = ompi_dtype_2_dte_dtype(dtype);
+    if (OPAL_UNLIKELY((HCOL_DTE_IS_ZERO(Dtype) || HCOL_DTE_IS_COMPLEX(Dtype)))
+                        && mca_coll_hcoll_component.hcoll_datatype_fallback){
+        /*If we are here then datatype is not simple predefined datatype */
+        /*In future we need to add more complex mapping to the dte_data_representation_t */
+        /* Now use fallback */
+        HCOL_VERBOSE(20,"Ompi_datatype is not supported: dtype = %s; calling fallback reduce;",
+                     dtype->super.name);
+        rc = hcoll_module->previous_reduce(sbuf,rbuf,
+                                             count,dtype,op,
+                                             root,
+                                             comm, hcoll_module->previous_reduce_module);
+        return rc;
+    }
+
+    Op = ompi_op_2_hcolrte_op(op);
+    if (OPAL_UNLIKELY(HCOL_DTE_OP_NULL == Op->id)){
+        /*If we are here then datatype is not simple predefined datatype */
+        /*In future we need to add more complex mapping to the dte_data_representation_t */
+        /* Now use fallback */
+        HCOL_VERBOSE(20,"ompi_op_t is not supported: op = %s; calling fallback reduce;",
+                     op->o_name);
+        rc = hcoll_module->previous_reduce(sbuf,rbuf,
+                                             count,dtype,op,
+                                             root,
+                                             comm, hcoll_module->previous_reduce_module);
+        return rc;
+    }
+
+    rc = hcoll_collectives.coll_reduce((void *)sbuf,rbuf,count,Dtype,Op,root,hcoll_module->hcoll_context);
+    if (HCOLL_SUCCESS != rc){
+        HCOL_VERBOSE(20,"RUNNING FALLBACK REDUCE");
+        rc = hcoll_module->previous_reduce(sbuf,rbuf,
+                                             count,dtype,op,
+                                             root,
+                                             comm, hcoll_module->previous_reduce_module);
+    }
+    return rc;
+}
+
+int mca_coll_hcoll_alltoall(const void *sbuf, int scount,
                            struct ompi_datatype_t *sdtype,
                            void* rbuf, int rcount,
                            struct ompi_datatype_t *rdtype,
@@ -397,7 +494,58 @@ int mca_coll_hcoll_iallgather(void *sbuf, int scount,
     return rc;
 }
 
-int mca_coll_hcoll_iallreduce(void *sbuf, void *rbuf, int count,
+#if HCOLL_API >= HCOLL_VERSION(3,5)
+int mca_coll_hcoll_iallgatherv(const void *sbuf, int scount,
+                            struct ompi_datatype_t *sdtype,
+                            void *rbuf, const int *rcount,
+                            const int *displs,
+                            struct ompi_datatype_t *rdtype,
+                            struct ompi_communicator_t *comm,
+                            ompi_request_t ** request,
+                            mca_coll_base_module_t *module)
+{
+    dte_data_representation_t stype;
+    dte_data_representation_t rtype;
+    int rc;
+    HCOL_VERBOSE(20,"RUNNING HCOL NON-BLOCKING ALLGATHERV");
+    mca_coll_hcoll_module_t *hcoll_module = (mca_coll_hcoll_module_t*)module;
+    stype = ompi_dtype_2_dte_dtype(sdtype);
+    rtype = ompi_dtype_2_dte_dtype(rdtype);
+    void **rt_handle = (void **) request;
+    if (OPAL_UNLIKELY((HCOL_DTE_IS_ZERO(stype) || HCOL_DTE_IS_ZERO(rtype)
+                        || HCOL_DTE_IS_COMPLEX(stype) || HCOL_DTE_IS_COMPLEX(rtype)))
+                        && mca_coll_hcoll_component.hcoll_datatype_fallback){
+        /*If we are here then datatype is not simple predefined datatype */
+        /*In future we need to add more complex mapping to the dte_data_representation_t */
+        /* Now use fallback */
+        HCOL_VERBOSE(20,"Ompi_datatype is not supported: sdtype = %s, rdtype = %s; calling fallback non-blocking allgatherv;",
+                     sdtype->super.name,
+                     rdtype->super.name);
+        rc = hcoll_module->previous_iallgatherv(sbuf,scount,sdtype,
+                                             rbuf,rcount,
+                                             displs, 
+                                             rdtype,
+                                             comm,
+                                             request,
+                                             hcoll_module->previous_iallgatherv_module);
+        return rc;
+    }
+    rc = hcoll_collectives.coll_iallgatherv((void *)sbuf,scount,stype,rbuf,rcount,displs,rtype,
+            hcoll_module->hcoll_context, rt_handle);
+    if (HCOLL_SUCCESS != rc){
+       HCOL_VERBOSE(20,"RUNNING FALLBACK NON-BLOCKING ALLGATHER");
+        rc = hcoll_module->previous_iallgatherv(sbuf,scount,sdtype,
+                                             rbuf,rcount,
+                                             displs, 
+                                             rdtype,
+                                             comm,
+                                             request,
+                                             hcoll_module->previous_iallgatherv_module);
+    }
+    return rc;
+}
+#endif
+int mca_coll_hcoll_iallreduce(const void *sbuf, void *rbuf, int count,
                             struct ompi_datatype_t *dtype,
                             struct ompi_op_t *op,
                             struct ompi_communicator_t *comm,
@@ -447,8 +595,65 @@ int mca_coll_hcoll_iallreduce(void *sbuf, void *rbuf, int count,
     }
     return rc;
 }
+#if HCOLL_API >= HCOLL_VERSION(3,5)
+int mca_coll_hcoll_ireduce(const void *sbuf, void *rbuf, int count,
+                            struct ompi_datatype_t *dtype,
+                            struct ompi_op_t *op,
+                            int root,
+                            struct ompi_communicator_t *comm,
+                            ompi_request_t ** request,
+                            mca_coll_base_module_t *module)
+{
+    dte_data_representation_t Dtype;
+    hcoll_dte_op_t *Op;
+    int rc;
+    HCOL_VERBOSE(20,"RUNNING HCOL NON-BLOCKING REDUCE");
+    mca_coll_hcoll_module_t *hcoll_module = (mca_coll_hcoll_module_t*)module;
+    Dtype = ompi_dtype_2_dte_dtype(dtype);
+    void **rt_handle = (void**) request;
+    if (OPAL_UNLIKELY((HCOL_DTE_IS_ZERO(Dtype) || HCOL_DTE_IS_COMPLEX(Dtype)))
+                        && mca_coll_hcoll_component.hcoll_datatype_fallback){
+        /*If we are here then datatype is not simple predefined datatype */
+        /*In future we need to add more complex mapping to the dte_data_representation_t */
+        /* Now use fallback */
+        HCOL_VERBOSE(20,"Ompi_datatype is not supported: dtype = %s; calling fallback non-blocking reduce;",
+                     dtype->super.name);
+        rc = hcoll_module->previous_ireduce(sbuf,rbuf,count,dtype,op,
+                                             root,
+                                             comm, request, 
+                                             hcoll_module->previous_ireduce_module);
+        return rc;
+    }
 
-int mca_coll_hcoll_igatherv(void* sbuf, int scount,
+    Op = ompi_op_2_hcolrte_op(op);
+    if (OPAL_UNLIKELY(HCOL_DTE_OP_NULL == Op->id)){
+        /*If we are here then datatype is not simple predefined datatype */
+        /*In future we need to add more complex mapping to the dte_data_representation_t */
+        /* Now use fallback */
+        HCOL_VERBOSE(20,"ompi_op_t is not supported: op = %s; calling fallback non-blocking reduce;",
+                     op->o_name);
+        rc = hcoll_module->previous_ireduce(sbuf,rbuf,
+                                             count,dtype,op,
+                                             root,
+                                             comm, request,
+                                             hcoll_module->previous_ireduce_module);
+        return rc;
+    }
+
+    rc = hcoll_collectives.coll_ireduce((void *)sbuf,rbuf,count,Dtype,Op,root,hcoll_module->hcoll_context,rt_handle);
+    if (HCOLL_SUCCESS != rc){
+        HCOL_VERBOSE(20,"RUNNING FALLBACK NON-BLOCKING REDUCE");
+        rc = hcoll_module->previous_ireduce(sbuf,rbuf,
+                                             count,dtype,op,
+                                             root,
+                                             comm, 
+                                             request,
+                                             hcoll_module->previous_ireduce_module);
+    }
+    return rc;
+}
+#endif
+int mca_coll_hcoll_igatherv(const void* sbuf, int scount,
                             struct ompi_datatype_t *sdtype,
                             void* rbuf, int *rcounts, int *displs,
                             struct ompi_datatype_t *rdtype,