diff --git a/ompi/mca/coll/tuned/coll_tuned.h b/ompi/mca/coll/tuned/coll_tuned.h
index 1a49bc3d6a..2eda6bb52c 100644
--- a/ompi/mca/coll/tuned/coll_tuned.h
+++ b/ompi/mca/coll/tuned/coll_tuned.h
@@ -444,13 +444,13 @@ typedef struct rule_s {
 struct mca_coll_base_comm_t {
   /* standard data for requests and PML usage */
 
-  /* we need to keep this here for now incase we fall through to the 
-   * basic functions that expect these fields/and memory to be 
-   * avaliable (GEF something for JS?)
+  /* Precreate space for requests 
+   * Note this does not effect basic, 
+   * but if in wrong context can confuse a debugger
    */
-  ompi_request_t **mccb_reqs;
-  int mccb_num_reqs;
 
+  ompi_request_t **mcct_reqs;
+  int mcct_num_reqs;
 
   /* 
    * tuned topo information caching per communicator 
@@ -461,17 +461,28 @@ struct mca_coll_base_comm_t {
    *
    */
 
-   ompi_coll_tree_t *cached_tree;
-   int cached_tree_root; 
-   int cached_tree_fanout; 
+   /* general tree with n fan out */
+   ompi_coll_tree_t *cached_ntree;
+   int cached_ntree_root; 
+   int cached_ntree_fanout; 
 
-   ompi_coll_bmtree_t *cached_bmtree;
+   /* binary tree */
+   ompi_coll_tree_t *cached_bintree;
+   int cached_bintree_root; 
+
+   /* binomial tree */
+   ompi_coll_tree_t *cached_bmtree;
    int cached_bmtree_root;
 
+   /* chained tree (fanout followed by pipelines) */
    ompi_coll_chain_t *cached_chain;
    int cached_chain_root;
    int cached_chain_fanout; 
 
+   /* pipeline */
+   ompi_coll_chain_t *cached_pipeline;
+   int cached_pipeline_root;
+
   /* extra data required by the decision functions */
   rule_t* decision_table;
 };
diff --git a/ompi/mca/coll/tuned/coll_tuned_bcast.c b/ompi/mca/coll/tuned/coll_tuned_bcast.c
index 36dfeea935..8264bf0fea 100644
--- a/ompi/mca/coll/tuned/coll_tuned_bcast.c
+++ b/ompi/mca/coll/tuned/coll_tuned_bcast.c
@@ -171,6 +171,7 @@ mca_coll_tuned_bcast_intra_chain ( void *buff, int count,
                                      chain->chain_next[i],
                                      MCA_COLL_BASE_TAG_BCAST,
                                      MCA_PML_BASE_SEND_STANDARD, comm));
+            if (err != MPI_SUCCESS) printf("sendcount %d i %d chain_next %d \n", sendcount, i, chain->chain_next[i]);
             if (err != MPI_SUCCESS) { line = __LINE__; goto error_hndl; }
         } /* end of for each child */
     } 
@@ -256,17 +257,15 @@ mca_coll_tuned_bcast_intra_split_bintree ( void* buffer,
      * other wise recreate it.
      */
 
-    if ((comm->c_coll_selected_data->cached_tree) && (comm->c_coll_selected_data->cached_tree_root == root) 
-        && (comm->c_coll_selected_data->cached_tree_fanout == 2)) {
-        tree = comm->c_coll_selected_data->cached_tree;
+    if ((comm->c_coll_selected_data->cached_bintree) && (comm->c_coll_selected_data->cached_bintree_root == root)) {
+        tree = comm->c_coll_selected_data->cached_bintree;
     }
     else {
-        if (comm->c_coll_selected_data->cached_tree) { /* destroy previous tree if defined */
-            ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_tree);    
+        if (comm->c_coll_selected_data->cached_bintree) { /* destroy previous tree if defined */
+            ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_bintree);    
         }
-        comm->c_coll_selected_data->cached_tree = tree = ompi_coll_tuned_topo_build_tree( 2, comm, root );
-        comm->c_coll_selected_data->cached_tree_root = root;
-        comm->c_coll_selected_data->cached_tree_fanout = 2;
+        comm->c_coll_selected_data->cached_bintree = tree = ompi_coll_tuned_topo_build_tree( 2, comm, root );
+        comm->c_coll_selected_data->cached_bintree_root = root;
     }
 
 
@@ -513,17 +512,15 @@ mca_coll_tuned_bcast_intra_bintree ( void* buffer,
      * other wise recreate it.
      */
 
-    if ((comm->c_coll_selected_data->cached_tree) && (comm->c_coll_selected_data->cached_tree_root == root) 
-        && (comm->c_coll_selected_data->cached_tree_fanout == 2)) {
-        tree = comm->c_coll_selected_data->cached_tree;
+    if ((comm->c_coll_selected_data->cached_bintree) && (comm->c_coll_selected_data->cached_bintree_root == root)) {
+        tree = comm->c_coll_selected_data->cached_bintree;
     }
     else {
-        if (comm->c_coll_selected_data->cached_tree) { /* destroy previous tree if defined */
-            ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_tree);    
+        if (comm->c_coll_selected_data->cached_bintree) { /* destroy previous bintree if defined */
+            ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_bintree);    
         }
-        comm->c_coll_selected_data->cached_tree = tree = ompi_coll_tuned_topo_build_tree( 2, comm, root );
-        comm->c_coll_selected_data->cached_tree_root = root;
-        comm->c_coll_selected_data->cached_tree_fanout = 2;
+        comm->c_coll_selected_data->cached_bintree = tree = ompi_coll_tuned_topo_build_tree( 2, comm, root );
+        comm->c_coll_selected_data->cached_bintree_root = root;
     }
 
 
diff --git a/ompi/mca/coll/tuned/coll_tuned_bcast_decision_fixed.c b/ompi/mca/coll/tuned/coll_tuned_bcast_decision_fixed.c
index 3e4e403740..e6b094e2cb 100644
--- a/ompi/mca/coll/tuned/coll_tuned_bcast_decision_fixed.c
+++ b/ompi/mca/coll/tuned/coll_tuned_bcast_decision_fixed.c
@@ -53,9 +53,11 @@ int mca_coll_tuned_bcast_intra_dec_fixed(void *buff, int count,
     rank = ompi_comm_rank(comm);
 
 /*     err = mca_coll_tuned_bcast_intra_linear (buff, count, datatype, root, comm); */
-/*     err = mca_coll_tuned_bcast_intra_pipeline (buff, count, datatype, root, comm, (8192)); */
+/*     err = mca_coll_tuned_bcast_intra_pipeline (buff, count, datatype, root, comm, (0)); */
+/*     err = mca_coll_tuned_bcast_intra_chain (buff, count, datatype, root, comm, (0), 1); */
 /*     err = mca_coll_tuned_bcast_intra_bmtree (buff, count, datatype, root, comm, (8192)); */
-    err = mca_coll_tuned_bcast_intra_bintree (buff, count, datatype, root, comm, (1024));
+/*     err = mca_coll_tuned_bcast_intra_split_bintree (buff, count, datatype, root, comm, (100)); */
+    err = mca_coll_tuned_bcast_intra_bintree (buff, count, datatype, root, comm, (100));
 
     return err;
 }
diff --git a/ompi/mca/coll/tuned/coll_tuned_component.c b/ompi/mca/coll/tuned/coll_tuned_component.c
index 18964ee437..dea44fdc51 100644
--- a/ompi/mca/coll/tuned/coll_tuned_component.c
+++ b/ompi/mca/coll/tuned/coll_tuned_component.c
@@ -108,7 +108,7 @@ static int tuned_open(void)
     /* some initial guesses at topology parameters */
     mca_coll_tuned_init_tree_fanout_param = 
         mca_base_param_register_int("coll", "tuned", "init_tree_fanout", 
-                                    NULL, 2);
+                                    NULL, 4);
 
     mca_coll_tuned_init_chain_fanout_param = 
         mca_base_param_register_int("coll", "tuned", "init_chain_fanout", 
diff --git a/ompi/mca/coll/tuned/coll_tuned_module.c b/ompi/mca/coll/tuned/coll_tuned_module.c
index dfb672de22..662b9505e8 100644
--- a/ompi/mca/coll/tuned/coll_tuned_module.c
+++ b/ompi/mca/coll/tuned/coll_tuned_module.c
@@ -306,7 +306,7 @@ mca_coll_tuned_module_init(struct ompi_communicator_t *comm)
   int size;
   struct mca_coll_base_comm_t *data;
   /* fanout parameters */
-  int tree_fanout_default = 2;
+  int tree_fanout_default = 4;
   int chain_fanout_default = 4;
 
 
@@ -331,14 +331,22 @@ mca_coll_tuned_module_init(struct ompi_communicator_t *comm)
   } else {
       size = ompi_comm_size(comm);
   }
+
+  /* 
+   * we still malloc data as it is used by BOTH the TUNED and the BASIC modules
+   * if we don't allocate it and fall back to a BASIC module routine then confuses debuggers 
+   * we place any special info after the default data
+   *
+   */
+
   data = malloc(sizeof(struct mca_coll_base_comm_t) +
                  (sizeof(ompi_request_t *) * size * 2));
   
   if (NULL == data) {
       return NULL;
   }
-  data->mccb_reqs = (ompi_request_t **) (data + 1);
-  data->mccb_num_reqs = size * 2;
+  data->mcct_reqs = (ompi_request_t **) (data + 1);
+  data->mcct_num_reqs = size * 2;
 
   /* 
    * now for the cached topo functions 
@@ -350,23 +358,26 @@ mca_coll_tuned_module_init(struct ompi_communicator_t *comm)
   mca_base_param_lookup_int(mca_coll_tuned_init_tree_fanout_param,
                                                 &tree_fanout_default)) {
     printf("warning: no mca_coll_tuned_init_tree_fanout_param found?\n");
-    tree_fanout_default = 2;  /* make it binary if failed lookup. */
   }
   if (OMPI_SUCCESS !=
   mca_base_param_lookup_int(mca_coll_tuned_init_chain_fanout_param,
                                                 &chain_fanout_default)) {
     printf("warning: no mca_coll_tuned_init_chain_fanout_param found?\n");
-    chain_fanout_default = 4;
   }
 
-  
-  data->cached_tree = ompi_coll_tuned_topo_build_tree (tree_fanout_default, 
-                                                        comm, 0); 
-  data->cached_tree_root = 0;
-  data->cached_tree_fanout = tree_fanout_default;
+ 
+  /* general n fan out tree */
+  data->cached_ntree = ompi_coll_tuned_topo_build_tree (tree_fanout_default, comm, 0); 
+  data->cached_ntree_root = 0;
+  data->cached_ntree_fanout = tree_fanout_default;
 
+  /* binary tree */
+  data->cached_bintree = ompi_coll_tuned_topo_build_tree (2, comm, 0); 
+  data->cached_bintree_root = 0;
+
+  /* binomial tree */
   data->cached_bmtree = ompi_coll_tuned_topo_build_bmtree (comm, 0);
-  data->cached_tree_root = 0;
+  data->cached_bmtree_root = 0;
 
   /* 
    * chains (fanout followed by pipelines)
@@ -376,11 +387,14 @@ mca_coll_tuned_module_init(struct ompi_communicator_t *comm)
    * will probably change how we cache this later, for now a midsize
    * GEF
    */
-  data->cached_chain = ompi_coll_tuned_topo_build_chain (chain_fanout_default,
-                                                         comm, 0);
+  data->cached_chain = ompi_coll_tuned_topo_build_chain (chain_fanout_default, comm, 0);
   data->cached_chain_root = 0;
   data->cached_chain_fanout = chain_fanout_default;
 
+  /* standard pipeline */
+  data->cached_pipeline = ompi_coll_tuned_topo_build_chain (1, comm, 0);
+  data->cached_pipeline_root = 0;
+
   /* All done */
 
   comm->c_coll_selected_data = data;
@@ -403,10 +417,28 @@ int mca_coll_tuned_module_finalize(struct ompi_communicator_t *comm)
   /* Reset the reqs to NULL/0 -- they'll be freed as part of freeing
      the generel c_coll_selected_data */
 
-  comm->c_coll_selected_data->mccb_reqs = NULL;
-  comm->c_coll_selected_data->mccb_num_reqs = 0;
+  comm->c_coll_selected_data->mcct_reqs = NULL;
+  comm->c_coll_selected_data->mcct_num_reqs = 0;
 #endif
 
+  /* free any cached information that has been allocated */
+  if (comm->c_coll_selected_data->cached_ntree) { /* destroy general tree if defined */
+        ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_ntree);
+  }
+  if (comm->c_coll_selected_data->cached_bintree) { /* destroy bintree if defined */
+        ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_bintree);
+  }
+  if (comm->c_coll_selected_data->cached_bmtree) { /* destroy bmtree if defined */
+        ompi_coll_tuned_topo_destroy_tree (&comm->c_coll_selected_data->cached_bmtree);
+  }
+  if (comm->c_coll_selected_data->cached_chain) { /* destroy general chain if defined */
+        ompi_coll_tuned_topo_destroy_chain (&comm->c_coll_selected_data->cached_chain);
+  }
+  if (comm->c_coll_selected_data->cached_pipeline) { /* destroy pipeline if defined */
+        ompi_coll_tuned_topo_destroy_chain (&comm->c_coll_selected_data->cached_pipeline);
+  }
+
+
   /* All done */
 
   free(comm->c_coll_selected_data);
diff --git a/ompi/mca/coll/tuned/coll_tuned_topo.c b/ompi/mca/coll/tuned/coll_tuned_topo.c
index 9a6f372dbd..573f2a56b0 100644
--- a/ompi/mca/coll/tuned/coll_tuned_topo.c
+++ b/ompi/mca/coll/tuned/coll_tuned_topo.c
@@ -73,6 +73,15 @@ ompi_coll_tuned_topo_build_tree( int fanout,
 
     printf("Building tuned topo tree: fo %d rt %d\n", fanout, root);
 
+    if (fanout<1) {
+        printf("ompi_coll_tuned_topo_build_tree: invalid fanout %d\n", fanout);
+        return NULL;
+    }
+    if (fanout>MAXTREEFANOUT) {
+        printf("ompi_coll_tuned_topo_build_tree: invalid fanout %d bigger than max %d\n", fanout, MAXTREEFANOUT);
+        return NULL;
+    }
+
     /* 
      * Get size and rank of the process in this communicator 
      */
@@ -80,17 +89,15 @@ ompi_coll_tuned_topo_build_tree( int fanout,
     rank = ompi_comm_rank(comm);
 
     tree = (ompi_coll_tree_t*)malloc(sizeof(ompi_coll_tree_t));
+    if (!tree) {
+        printf("PANIC:ompi_coll_tuned_topo_build_tree:out of memory\n");
+        fflush(stdout);
+        return NULL;
+    }
+
     tree->tree_root     = MPI_UNDEFINED;
     tree->tree_nextsize = MPI_UNDEFINED;
 
-    /*
-     * Check if we calculated the tree for this root and 
-     * fanout combination already  (on this communicator)
-     */
-    if( (root == tree->tree_root) && (fanout == tree->tree_fanout) ) {
-        return tree;
-    }
-
     /*
      * Set root
      */
@@ -100,6 +107,7 @@ ompi_coll_tuned_topo_build_tree( int fanout,
      * Initialize tree
      */
     tree->tree_fanout   = fanout;
+    tree->tree_bmtree   = 0;
     tree->tree_root     = root;
     tree->tree_prev     = -1;
     tree->tree_nextsize = 0;
@@ -155,10 +163,23 @@ ompi_coll_tuned_topo_build_tree( int fanout,
 
 int ompi_coll_tuned_topo_destroy_tree( ompi_coll_tree_t** tree )
 {
+    ompi_coll_tree_t *ptr;
+
+    return 0;
+
+    if ((!tree)||(!*tree)) {
+        return OMPI_SUCCESS;
+    }
+
+    ptr = *tree;
+
+    free (ptr);
+    *tree = NULL;   /* mark tree as gone */
+
     return OMPI_SUCCESS;
 }
 
-ompi_coll_bmtree_t*
+ompi_coll_tree_t*
 ompi_coll_tuned_topo_build_bmtree( struct ompi_communicator_t* comm,
                         int root )
 {
@@ -168,7 +189,8 @@ ompi_coll_tuned_topo_build_bmtree( struct ompi_communicator_t* comm,
     int mask = 1;
     int index;
     int remote;
-    ompi_coll_bmtree_t *bmtree;
+    ompi_coll_tree_t *bmtree;
+    int i;
 
     printf("Building tuned topo bmtree: rt %d\n", root);
 
@@ -180,13 +202,19 @@ ompi_coll_tuned_topo_build_bmtree( struct ompi_communicator_t* comm,
 
     index = rank -root;
 
-    bmtree = (ompi_coll_bmtree_t*)malloc(sizeof(ompi_coll_bmtree_t));
-    bmtree->bmtree_root     = MPI_UNDEFINED;
-    bmtree->bmtree_nextsize = MPI_UNDEFINED;
+    bmtree = (ompi_coll_tree_t*)malloc(sizeof(ompi_coll_tree_t));
+    if (!bmtree) {
+        printf("PANIC:ompi_coll_tuned_topo_build_bmtree:out of memory\n");
+        fflush(stdout);
+        return NULL;
+    }
 
-    if( bmtree->bmtree_root == root ) {
-        /* the bmtree was computed before */
-        return bmtree;
+    bmtree->tree_bmtree   = 1;
+
+    bmtree->tree_root     = MPI_UNDEFINED;
+    bmtree->tree_nextsize = MPI_UNDEFINED;
+    for(i=0;i<MAXTREEFANOUT;i++) {
+        bmtree->tree_next[i] = -1;
     }
 
     if( index < 0 ) index += size;
@@ -195,11 +223,11 @@ ompi_coll_tuned_topo_build_bmtree( struct ompi_communicator_t* comm,
 
     /* Now I can compute my father rank */
     if( root == rank ) {
-        bmtree->bmtree_prev = root;
+        bmtree->tree_prev = root;
     } else {
         remote = (index ^ (mask >> 1)) + root;
         if( remote >= size ) remote -= size;
-        bmtree->bmtree_prev = remote;
+        bmtree->tree_prev = remote;
     }
     /* And now let's fill my childs */
     while( mask < size ) {
@@ -207,19 +235,19 @@ ompi_coll_tuned_topo_build_bmtree( struct ompi_communicator_t* comm,
         if( remote >= size ) break;
         remote += root;
         if( remote >= size ) remote -= size;
-        bmtree->bmtree_next[childs] = remote;
+        if (childs==MAXTREEFANOUT) {
+            printf("ompi_coll_tuned_topo_build_bmtree: max fanout incorrect %d needed %d\n", MAXTREEFANOUT, childs);
+            return NULL;
+        }
+        bmtree->tree_next[childs] = remote;
         mask <<= 1;
         childs++;
     }
-    bmtree->bmtree_nextsize = childs;
-    bmtree->bmtree_root     = root;
+    bmtree->tree_nextsize = childs;
+    bmtree->tree_root     = root;
     return bmtree;
 }
 
-int ompi_coll_tuned_topo_destroy_bmtree( ompi_coll_bmtree_t** bmtree )
-{
-    return OMPI_SUCCESS;
-}
 
 ompi_coll_chain_t*
 ompi_coll_tuned_topo_build_chain( int fanout,
@@ -240,7 +268,11 @@ ompi_coll_tuned_topo_build_chain( int fanout,
     size = ompi_comm_size(comm);
     rank = ompi_comm_rank(comm);
 
-    if( fanout > MAXTREEFANOUT ) {
+    if( fanout < 1 ) {
+        return NULL;
+    }
+    if (fanout>MAXTREEFANOUT) {
+        printf("ompi_coll_tuned_topo_build_chain: invalid fanout %d bigger than max %d\n", fanout, MAXTREEFANOUT);
         return NULL;
     }
 
@@ -248,17 +280,16 @@ ompi_coll_tuned_topo_build_chain( int fanout,
      * Allocate space for topology arrays if needed 
      */
     chain = (ompi_coll_chain_t*)malloc( sizeof(ompi_coll_chain_t) );
+    if (!chain) {
+        printf("PANIC:ompi_coll_tuned_topo_build_chain:out of memory\n");
+        fflush(stdout);
+        return NULL;
+    }
     chain->chain_root     = MPI_UNDEFINED;
     chain->chain_nextsize = -1;
     chain->chain_numchain = -1;
+    for(i=0;i<fanout;i++) chain->chain_next[i] = -1;
 
-    /*
-     * Check if we calculated the topology for this root and comm 
-     */
-    if( (root == chain->chain_root) &&
-        (fanout == chain->chain_numchain) ) {
-        return chain;
-    }
     /* 
      * Set root & numchain
      */
@@ -374,5 +405,18 @@ ompi_coll_tuned_topo_build_chain( int fanout,
 
 int ompi_coll_tuned_topo_destroy_chain( ompi_coll_chain_t** chain )
 {
+    ompi_coll_chain_t *ptr;
+
+    return 0;
+
+    if ((!chain)||(!*chain)) {
+        return OMPI_SUCCESS;
+    }
+
+    ptr = *chain;
+
+    free (ptr);
+    *chain = NULL;   /* mark chain as gone */
+
     return OMPI_SUCCESS;
 }
diff --git a/ompi/mca/coll/tuned/coll_tuned_topo.h b/ompi/mca/coll/tuned/coll_tuned_topo.h
index 582f6a40fb..c6fdd4253c 100644
--- a/ompi/mca/coll/tuned/coll_tuned_topo.h
+++ b/ompi/mca/coll/tuned/coll_tuned_topo.h
@@ -29,18 +29,12 @@ extern "C"
 typedef struct ompi_coll_tree_t {
     int32_t tree_root;
     int32_t tree_fanout;
+    int32_t tree_bmtree;
     int32_t tree_prev;
     int32_t tree_next[MAXTREEFANOUT];
     int32_t tree_nextsize;
 } ompi_coll_tree_t;
 
-typedef struct ompi_coll_bmtree_t {
-    int32_t bmtree_root;
-    int32_t bmtree_prev;
-    int32_t bmtree_next[MAXTREEFANOUT];
-    int32_t bmtree_nextsize;
-} ompi_coll_bmtree_t;
-
 typedef struct ompi_coll_chain_t {
     int32_t chain_root;
     int32_t chain_prev;
@@ -55,10 +49,9 @@ ompi_coll_tuned_topo_build_tree( int fanout,
                              int root );
 int ompi_coll_tuned_topo_destroy_tree( ompi_coll_tree_t** tree );
 
-ompi_coll_bmtree_t*
+ompi_coll_tree_t*
 ompi_coll_tuned_topo_build_bmtree( struct ompi_communicator_t* comm,
                         int root );
-int ompi_coll_tuned_topo_destroy_bmtree( ompi_coll_bmtree_t** bmtree );
 
 ompi_coll_chain_t*
 ompi_coll_tuned_topo_build_chain( int fanout,