Automatically disable the rendez-vous protocol if the gm_get function is not available.

This commit was SVN r5282.

src/mca/ptl/gm/src/ptl_gm_component.c

@@ -129,8 +129,13 @@ mca_ptl_gm_component_open(void)
     /* Parameters setting the message limits. */
     mca_ptl_gm_component.gm_eager_limit = 
         mca_ptl_gm_param_register_int( "eager_limit", 128 * 1024 );
+#if OMPI_MCA_PTL_GM_HAVE_RDMA_GET
     mca_ptl_gm_component.gm_rndv_burst_limit = 
         mca_ptl_gm_param_register_int( "rndv_burst_limit", 512 * 1024 );
+#else
+    mca_ptl_gm_component.gm_rndv_burst_limit = 
+        mca_ptl_gm_param_register_int( "rndv_burst_limit", mca_ptl_gm_module.super.ptl_max_frag_size );
+#endif  /* OMPI_MCA_PTL_GM_HAVE_RDMA_GET */
     mca_ptl_gm_component.gm_rdma_frag_size =
         mca_ptl_gm_param_register_int ("rdma_frag_size", 128 * 1024);