Pull in the topology early and set cache line size

Init PMIx and get the topology immediately after setting up opal
util as neither of those operations requires any real OPAL support.
This fills in the cache line size before anything else is opened.

Signed-off-by: Ralph Castain <rhc@pmix.org>

Author: rhc54

3rd-party/prrte

@@ -12,7 +12,7 @@ enable_ipv6=no
 enable_man_pages=no
 enable_mpi_fortran=no
 enable_memchecker=no
-enable_mca_no_build=memchecker,coll-adapt,coll-cuda,coll-demo,coll-ftagree,coll-han,coll-hcoll,coll-inter,coll-libnbc,coll-monitoring,coll-portals4,coll-tuned,common-monitoring,common-ompio,fbtl,fcoll,fs,io,mtl,osc,pml-cm,pml-monitoring,pml-ucx,pml-v,sharedfp,topo,vprotocol,btl-ofi,btl-portals4,btl-smcuda,btl-uct,btl-ugni,btl-usnic,common-cuda,common-ofi,common-ucx
+enable_mca_no_build=memchecker,common-monitoring,common-ompio,fbtl,fcoll,fs,io,mtl,osc,pml-cm,pml-monitoring,pml-ucx,pml-v,sharedfp,topo,vprotocol,btl-ofi,btl-portals4,btl-smcuda,btl-uct,btl-ugni,btl-usnic,common-cuda,common-ofi,common-ucx
 enable_contrib_no_build=libompitrace
 with_memory_manager=no
 with_devel_headers=yes

contrib/platform/intel/bend/mac

@@ -26,6 +26,7 @@
  * Copyright (c) 2018      FUJITSU LIMITED.  All rights reserved.
  * Copyright (c) 2020      Amazon.com, Inc. or its affiliates.
  *                         All Rights reserved.
+ * Copyright (c) 2021      Nanook Consulting.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -402,6 +403,7 @@ int ompi_mpi_init(int argc, char **argv, int requested, int *provided,
     pmix_status_t rc;
     OMPI_TIMING_INIT(64);
     opal_pmix_lock_t mylock;
+    opal_process_name_t pname;
 
     ompi_hook_base_mpi_init_top(argc, argv, requested, provided);
 
@@ -445,6 +447,7 @@ int ompi_mpi_init(int argc, char **argv, int requested, int *provided,
     ompi_mpi_thread_level(requested, provided);
 
     /* Setup enough to check get/set MCA params */
+    memset(&opal_process_info, 0, sizeof(opal_process_info));
     if (OPAL_SUCCESS != (ret = opal_init_util(&argc, &argv))) {
         error = "ompi_mpi_init: opal_init_util failed";
         goto error;
@@ -470,6 +473,40 @@ int ompi_mpi_init(int argc, char **argv, int requested, int *provided,
         goto error;
     }
 
+    /* setup our internal nspace hack */
+    opal_pmix_setup_nspace_tracker();
+    /* init PMIx */
+    if (PMIX_SUCCESS != (ret = PMIx_Init(&opal_process_info.myprocid, NULL, 0))) {
+        /* if we get PMIX_ERR_UNREACH indicating that we cannot reach the
+         * server, then we assume we are operating as a singleton */
+        if (PMIX_ERR_UNREACH == ret) {
+            ompi_singleton = true;
+        } else {
+            /* we cannot run - this could be due to being direct launched
+             * without the required PMI support being built, so print
+             * out a help message indicating it */
+            opal_show_help("help-mpi-runtime.txt", "no-pmi", true, PMIx_Error_string(ret));
+            return OPAL_ERR_SILENT;
+        }
+    }
+    /* setup the process name fields - also registers the new nspace */
+    OPAL_PMIX_CONVERT_PROCT(ret, &pname, &opal_process_info.myprocid);
+    if (OPAL_SUCCESS != ret) {
+        error = "ompi_mpi_init: converting process name";
+        goto error;
+    }
+    OPAL_PROC_MY_NAME.jobid = pname.jobid;
+    OPAL_PROC_MY_NAME.vpid = pname.vpid;
+    opal_process_info.my_name.jobid = OPAL_PROC_MY_NAME.jobid;
+    opal_process_info.my_name.vpid = OPAL_PROC_MY_NAME.vpid;
+
+    /* get our topology and cache line size */
+    ret = opal_hwloc_base_get_topology();
+    if (OPAL_SUCCESS != ret) {
+        error = "ompi_mpi_init: get topology";
+        goto error;
+    }
+
     if (OPAL_SUCCESS != (ret = opal_arch_set_fortran_logical_size(sizeof(ompi_fortran_logical_t)))) {
         error = "ompi_mpi_init: opal_arch_set_fortran_logical_size failed";
         goto error;

ompi/runtime/ompi_mpi_init.c

@@ -543,7 +543,6 @@ int ompi_rte_init(int *pargc, char ***pargv)
 
     u32ptr = &u32;
     u16ptr = &u16;
-    memset(&opal_process_info, 0, sizeof(opal_process_info));
 
     /* Convince OPAL to use our naming scheme */
     opal_process_name_print = _process_name_print_for_opal;
@@ -561,34 +560,6 @@ int ompi_rte_init(int *pargc, char ***pargv)
         goto error;
     }
 
-    /* setup our internal nspace hack */
-    opal_pmix_setup_nspace_tracker();
-
-    /* initialize the selected module */
-    if (PMIX_SUCCESS != (ret = PMIx_Init(&opal_process_info.myprocid, NULL, 0))) {
-        /* if we get PMIX_ERR_UNREACH indicating that we cannot reach the
-         * server, then we assume we are operating as a singleton */
-        if (PMIX_ERR_UNREACH == ret) {
-            ompi_singleton = true;
-        } else {
-            /* we cannot run - this could be due to being direct launched
-             * without the required PMI support being built, so print
-             * out a help message indicating it */
-            opal_show_help("help-mpi-runtime.txt", "no-pmi", true, PMIx_Error_string(ret));
-            return OPAL_ERR_SILENT;
-        }
-    }
-
-    /* setup the process name fields - also registers the new nspace */
-    OPAL_PMIX_CONVERT_PROCT(rc, &pname, &opal_process_info.myprocid);
-    if (OPAL_SUCCESS != rc) {
-        return rc;
-    }
-    OPAL_PROC_MY_NAME.jobid = pname.jobid;
-    OPAL_PROC_MY_NAME.vpid = pname.vpid;
-    opal_process_info.my_name.jobid = OPAL_PROC_MY_NAME.jobid;
-    opal_process_info.my_name.vpid = OPAL_PROC_MY_NAME.vpid;
-
     /* set our hostname */
     ev1 = NULL;
     OPAL_MODEX_RECV_VALUE_OPTIONAL(ret, PMIX_HOSTNAME, &OPAL_PROC_MY_NAME,