Allow the dpm to query the server for local peer info

The local PMIx server may have info on the local peers
for a job - so allow the client to request that info
if it doesn't already possess it.

Also clean up some diagnostic output so it shows the
PMIx attribute name (or just the provided string if it
isn't an attribute name) to make it easier to correlate
to the code.

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

Author: rhc54

ompi/dpm/dpm.c

@@ -430,7 +430,7 @@ int ompi_dpm_connect_accept(ompi_communicator_t *comm, int root,
             wildcard_rank.jobid = proc->super.proc_name.jobid;
             wildcard_rank.vpid = OMPI_NAME_WILDCARD->vpid;
             /* retrieve the local peers for the specified jobid */
-            OPAL_MODEX_RECV_VALUE_OPTIONAL(rc, PMIX_LOCAL_PEERS,
+            OPAL_MODEX_RECV_VALUE_IMMEDIATE(rc, PMIX_LOCAL_PEERS,
                                            &wildcard_rank, &val, PMIX_STRING);
             if (OPAL_SUCCESS == rc && NULL != val) {
                 char **peers = opal_argv_split(val, ',');

opal/mca/pmix/pmix-internal.h

@@ -9,7 +9,7 @@
  *                         reserved.
  * Copyright (c) 2020      Amazon.com, Inc. or its affiliates.
  *                         All Rights reserved.
- * Copyright (c) 2021      Nanook Consulting.  All rights reserved.
+ * Copyright (c) 2021-2024 Nanook Consulting  All rights reserved.
  * Copyright (c) 2021      Argonne National Laboratory.  All rights
  *                         reserved.
  * $COPYRIGHT$
@@ -293,7 +293,7 @@ typedef struct {
         OPAL_OUTPUT_VERBOSE((1, opal_pmix_verbose_output,                              \
                              "%s[%s:%d] MODEX RECV VALUE OPTIONAL FOR PROC %s KEY %s", \
                              OPAL_NAME_PRINT(OPAL_PROC_MY_NAME), __FILE__, __LINE__,   \
-                             OPAL_NAME_PRINT(*(p)), (s)));                             \
+                             OPAL_NAME_PRINT(*(p)), PMIx_Get_attribute_name(s)));      \
         OPAL_PMIX_CONVERT_NAME(&_proc, (p));                                           \
         PMIX_INFO_LOAD(&_info, PMIX_OPTIONAL, NULL, PMIX_BOOL);                        \
         (r) = PMIx_Get(&(_proc), (s), &(_info), 1, &(_kv));                            \
@@ -334,7 +334,7 @@ typedef struct {
         OPAL_OUTPUT_VERBOSE((1, opal_pmix_verbose_output,                               \
                              "%s[%s:%d] MODEX RECV VALUE IMMEDIATE FOR PROC %s KEY %s", \
                              OPAL_NAME_PRINT(OPAL_PROC_MY_NAME), __FILE__, __LINE__,    \
-                             OPAL_NAME_PRINT(*(p)), (s)));                              \
+                             OPAL_NAME_PRINT(*(p)), PMIx_Get_attribute_name(s)));       \
         OPAL_PMIX_CONVERT_NAME(&_proc, (p));                                            \
         PMIX_INFO_LOAD(&_info, PMIX_IMMEDIATE, NULL, PMIX_BOOL);                        \
         (r) = PMIx_Get(&(_proc), (s), &(_info), 1, &(_kv));                             \
@@ -370,7 +370,8 @@ typedef struct {
         size_t _sz;                                                                                \
         OPAL_OUTPUT_VERBOSE(                                                                       \
             (1, opal_pmix_verbose_output, "%s[%s:%d] MODEX RECV VALUE FOR PROC %s KEY %s",         \
-             OPAL_NAME_PRINT(OPAL_PROC_MY_NAME), __FILE__, __LINE__, OPAL_NAME_PRINT(*(p)), (s))); \
+             OPAL_NAME_PRINT(OPAL_PROC_MY_NAME), __FILE__, __LINE__, OPAL_NAME_PRINT(*(p)),        \
+             PMIx_Get_attribute_name(s))); \
         OPAL_PMIX_CONVERT_NAME(&_proc, (p));                                                       \
         (r) = PMIx_Get(&(_proc), (s), NULL, 0, &(_kv));                                            \
         if (NULL == _kv) {                                                                         \
@@ -406,7 +407,7 @@ typedef struct {
         OPAL_OUTPUT_VERBOSE((1, opal_pmix_verbose_output,                               \
                              "%s[%s:%d] MODEX RECV STRING OPTIONAL FOR PROC %s KEY %s", \
                              OPAL_NAME_PRINT(OPAL_PROC_MY_NAME), __FILE__, __LINE__,    \
-                             OPAL_NAME_PRINT(*(p)), (s)));                              \
+                             OPAL_NAME_PRINT(*(p)), PMIx_Get_attribute_name(s)));       \
         *(d) = NULL;                                                                    \
         *(sz) = 0;                                                                      \
         OPAL_PMIX_CONVERT_NAME(&_proc, (p));                                            \
@@ -444,7 +445,8 @@ typedef struct {
         pmix_info_t _info;                                                                         \
         OPAL_OUTPUT_VERBOSE(                                                                       \
             (1, opal_pmix_verbose_output, "%s[%s:%d] MODEX RECV STRING FOR PROC %s KEY %s",        \
-             OPAL_NAME_PRINT(OPAL_PROC_MY_NAME), __FILE__, __LINE__, OPAL_NAME_PRINT(*(p)), (s))); \
+             OPAL_NAME_PRINT(OPAL_PROC_MY_NAME), __FILE__, __LINE__, OPAL_NAME_PRINT(*(p)),        \
+             PMIx_Get_attribute_name(s)));                                                         \
         *(d) = NULL;                                                                               \
         *(sz) = 0;                                                                                 \
         OPAL_PMIX_CONVERT_NAME(&_proc, (p));                                                       \