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openmpi/opal/mca/base/mca_base_open.c
Jeff Squyres 5705192151 configure: add --en|disable-show-load-errors-by-default 
Give packagers a configure CLI option to set the value of the MCA
variable mca_base_component_show_load_errors.

The --disable form of this option is intended for Open MPI packagers
who tend to enable support for many different types of networks and
systems in their packages.  For example, consider a packager who
includes support for both the FOO and BAR networks in their Open MPI
package, both of which require support libraries (libFOO.so and
libBAR.so).  If an end user only has BAR hardware, they likely only
have libBAR.so available on their systems -- not libFOO.so.  Disabling
load errors by default will prevent the user from seeing potentially
confusing warnings about the FOO components failing to load because
libFOO.so is not available on their systems.

Conversely, system administrators tend to build an Open MPI that is
targeted at their specific environment, and contains few (if any)
components that are not needed.  In such cases, they might want their
users to be warned that the FOO network components failed to load
(e.g., if libFOO.so was mistakenly unavailable), because Open MPI may
otherwise silently failover to a slower network path for MPI traffic.

Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
2017-10-11 11:02:21 -07:00

270 строки
9.7 KiB
C
Исходник Ответственный История

/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2008 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2011-2017 Cisco Systems, Inc. All rights reserved
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2017 IBM Corporation. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdio.h>
#include <string.h>
#ifdef HAVE_SYSLOG_H
#include <syslog.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "opal/mca/installdirs/installdirs.h"
#include "opal/util/output.h"
#include "opal/util/printf.h"
#include "opal/mca/mca.h"
#include "opal/mca/base/base.h"
#include "opal/mca/base/mca_base_component_repository.h"
#include "opal/constants.h"
#include "opal/util/opal_environ.h"
/*
* Public variables
*/
char *mca_base_component_path = NULL;
int mca_base_opened = 0;
char *mca_base_system_default_path = NULL;
char *mca_base_user_default_path = NULL;
bool mca_base_component_show_load_errors =
(bool) OPAL_SHOW_LOAD_ERRORS_DEFAULT;
bool mca_base_component_track_load_errors = false;
bool mca_base_component_disable_dlopen = false;
static char *mca_base_verbose = NULL;
/*
* Private functions
*/
static void set_defaults(opal_output_stream_t *lds);
static void parse_verbose(char *e, opal_output_stream_t *lds);
/*
* Main MCA initialization.
*/
int mca_base_open(void)
{
char *value;
opal_output_stream_t lds;
char hostname[OPAL_MAXHOSTNAMELEN];
int var_id;
if (mca_base_opened++) {
return OPAL_SUCCESS;
}
/* define the system and user default paths */
#if OPAL_WANT_HOME_CONFIG_FILES
mca_base_system_default_path = strdup(opal_install_dirs.opallibdir);
asprintf(&mca_base_user_default_path, "%s"OPAL_PATH_SEP".openmpi"OPAL_PATH_SEP"components", opal_home_directory());
#else
asprintf(&mca_base_system_default_path, "%s", opal_install_dirs.opallibdir);
#endif
/* see if the user wants to override the defaults */
if (NULL == mca_base_user_default_path) {
value = strdup(mca_base_system_default_path);
} else {
asprintf(&value, "%s%c%s", mca_base_system_default_path,
OPAL_ENV_SEP, mca_base_user_default_path);
}
mca_base_component_path = value;
var_id = mca_base_var_register("opal", "mca", "base", "component_path",
"Path where to look for additional components",
MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY,
&mca_base_component_path);
(void) mca_base_var_register_synonym(var_id, "opal", "mca", NULL, "component_path",
MCA_BASE_VAR_SYN_FLAG_DEPRECATED);
free(value);
mca_base_component_show_load_errors =
(bool) OPAL_SHOW_LOAD_ERRORS_DEFAULT;
var_id = mca_base_var_register("opal", "mca", "base", "component_show_load_errors",
"Whether to show errors for components that failed to load or not",
MCA_BASE_VAR_TYPE_BOOL, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY,
&mca_base_component_show_load_errors);
(void) mca_base_var_register_synonym(var_id, "opal", "mca", NULL, "component_show_load_errors",
MCA_BASE_VAR_SYN_FLAG_DEPRECATED);
mca_base_component_track_load_errors = false;
var_id = mca_base_var_register("opal", "mca", "base", "component_track_load_errors",
"Whether to track errors for components that failed to load or not",
MCA_BASE_VAR_TYPE_BOOL, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY,
&mca_base_component_track_load_errors);
mca_base_component_disable_dlopen = false;
var_id = mca_base_var_register("opal", "mca", "base", "component_disable_dlopen",
"Whether to attempt to disable opening dynamic components or not",
MCA_BASE_VAR_TYPE_BOOL, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY,
&mca_base_component_disable_dlopen);
(void) mca_base_var_register_synonym(var_id, "opal", "mca", NULL, "component_disable_dlopen",
MCA_BASE_VAR_SYN_FLAG_DEPRECATED);
/* What verbosity level do we want for the default 0 stream? */
char *str = getenv("OPAL_OUTPUT_INTERNAL_TO_STDOUT");
if (NULL != str && str[0] == '1') {
mca_base_verbose = "stdout";
}
else {
mca_base_verbose = "stderr";
}
var_id = mca_base_var_register("opal", "mca", "base", "verbose",
"Specifies where the default error output stream goes (this is separate from distinct help messages). Accepts a comma-delimited list of: stderr, stdout, syslog, syslogpri:<notice|info|debug>, syslogid:<str> (where str is the prefix string for all syslog notices), file[:filename] (if filename is not specified, a default filename is used), fileappend (if not specified, the file is opened for truncation), level[:N] (if specified, integer verbose level; otherwise, 0 is implied)",
MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
OPAL_INFO_LVL_9,
MCA_BASE_VAR_SCOPE_READONLY,
&mca_base_verbose);
(void) mca_base_var_register_synonym(var_id, "opal", "mca", NULL, "verbose",
MCA_BASE_VAR_SYN_FLAG_DEPRECATED);
memset(&lds, 0, sizeof(lds));
if (NULL != mca_base_verbose) {
parse_verbose(mca_base_verbose, &lds);
} else {
set_defaults(&lds);
}
gethostname(hostname, sizeof(hostname));
asprintf(&lds.lds_prefix, "[%s:%05d] ", hostname, getpid());
opal_output_reopen(0, &lds);
opal_output_verbose (MCA_BASE_VERBOSE_COMPONENT, 0, "mca: base: opening components");
free(lds.lds_prefix);
/* Open up the component repository */
return mca_base_component_repository_init();
}
/*
* Set sane default values for the lds
*/
static void set_defaults(opal_output_stream_t *lds)
{
/* Load up defaults */
OBJ_CONSTRUCT(lds, opal_output_stream_t);
lds->lds_syslog_priority = LOG_INFO;
lds->lds_syslog_ident = "ompi";
lds->lds_want_stderr = true;
}
/*
* Parse the value of an environment variable describing verbosity
*/
static void parse_verbose(char *e, opal_output_stream_t *lds)
{
char *edup;
char *ptr, *next;
bool have_output = false;
if (NULL == e) {
return;
}
edup = strdup(e);
ptr = edup;
/* Now parse the environment variable */
while (NULL != ptr && strlen(ptr) > 0) {
next = strchr(ptr, ',');
if (NULL != next) {
*next = '\0';
}
if (0 == strcasecmp(ptr, "syslog")) {
lds->lds_want_syslog = true;
have_output = true;
}
else if (strncasecmp(ptr, "syslogpri:", 10) == 0) {
lds->lds_want_syslog = true;
have_output = true;
if (strcasecmp(ptr + 10, "notice") == 0)
lds->lds_syslog_priority = LOG_NOTICE;
else if (strcasecmp(ptr + 10, "INFO") == 0)
lds->lds_syslog_priority = LOG_INFO;
else if (strcasecmp(ptr + 10, "DEBUG") == 0)
lds->lds_syslog_priority = LOG_DEBUG;
} else if (strncasecmp(ptr, "syslogid:", 9) == 0) {
lds->lds_want_syslog = true;
lds->lds_syslog_ident = ptr + 9;
}
else if (strcasecmp(ptr, "stdout") == 0) {
lds->lds_want_stdout = true;
have_output = true;
} else if (strcasecmp(ptr, "stderr") == 0) {
lds->lds_want_stderr = true;
have_output = true;
}
else if (strcasecmp(ptr, "file") == 0 || strcasecmp(ptr, "file:") == 0) {
lds->lds_want_file = true;
have_output = true;
} else if (strncasecmp(ptr, "file:", 5) == 0) {
lds->lds_want_file = true;
lds->lds_file_suffix = strdup(ptr + 5);
have_output = true;
} else if (strcasecmp(ptr, "fileappend") == 0) {
lds->lds_want_file = true;
lds->lds_want_file_append = 1;
have_output = true;
}
else if (strncasecmp(ptr, "level", 5) == 0) {
lds->lds_verbose_level = 0;
if (ptr[5] == OPAL_ENV_SEP)
lds->lds_verbose_level = atoi(ptr + 6);
}
if (NULL == next) {
break;
}
ptr = next + 1;
}
/* If we didn't get an output, default to stderr */
if (!have_output) {
lds->lds_want_stderr = true;
}
/* All done */
free(edup);
}
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