btl/openib: don't align fragments on 2 byte boundaries (changed to 8)

cmr:v1.6,v1.7

This commit was SVN r28083.

ompi/mca/btl/openib/btl_openib_component.c

@@ -2575,7 +2575,7 @@ btl_openib_component_init(int *num_btl_modules,
 
     if (OMPI_SUCCESS != ompi_free_list_init_ex_new(
                 &mca_btl_openib_component.send_user_free,
-                sizeof(mca_btl_openib_put_frag_t), 2,
+                sizeof(mca_btl_openib_put_frag_t), 8,
                 OBJ_CLASS(mca_btl_openib_put_frag_t),
                 0, 0,
                 mca_btl_openib_component.ib_free_list_num,
@@ -2592,7 +2592,7 @@ btl_openib_component_init(int *num_btl_modules,
 
     if(OMPI_SUCCESS != ompi_free_list_init_ex_new(
                 &mca_btl_openib_component.recv_user_free,
-                sizeof(mca_btl_openib_get_frag_t), 2,
+                sizeof(mca_btl_openib_get_frag_t), 8,
                 OBJ_CLASS(mca_btl_openib_get_frag_t),
                 0, 0,
                 mca_btl_openib_component.ib_free_list_num,
@@ -2609,7 +2609,7 @@ btl_openib_component_init(int *num_btl_modules,
 
     if(OMPI_SUCCESS != ompi_free_list_init_ex(
                 &mca_btl_openib_component.send_free_coalesced,
-                length, 2, OBJ_CLASS(mca_btl_openib_coalesced_frag_t),
+                length, 8, OBJ_CLASS(mca_btl_openib_coalesced_frag_t),
                 mca_btl_openib_component.ib_free_list_num,
                 mca_btl_openib_component.ib_free_list_max,
                 mca_btl_openib_component.ib_free_list_inc,