2004-05-20 17:54:14 +04:00
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/*
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* $HEADER$
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*/
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2004-05-27 20:26:36 +04:00
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/** @file:
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2004-05-26 06:23:01 +04:00
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*
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2004-05-27 20:26:36 +04:00
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* Populates global structure with system-specific information.
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2004-05-20 21:38:54 +04:00
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*/
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2004-05-27 20:26:36 +04:00
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2004-05-26 06:23:01 +04:00
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#include <stdbool.h>
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2004-05-20 17:54:14 +04:00
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#include <sys/utsname.h>
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2004-05-27 20:26:36 +04:00
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/**
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* System information structure
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*
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* The ompi_sys_info() function fills the sysname, nodename, release, version, machine,
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* path_sep, and user fields, but does not populate
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* the session_dir, enviro, suffix, or sock_* fields. These latter fields are populated by other
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* functions as required.
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*
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*/
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2004-05-21 01:28:59 +04:00
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struct ompi_sys_info_t {
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2004-05-27 20:26:36 +04:00
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bool init; /**< Certifies that values have been filled.
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* Certifies that the ompi_sys_info() function has been
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* called at least once so fields have valid values
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*/
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2004-06-11 04:37:42 +04:00
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pid_t pid; /* Process ID for this process */
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2004-05-27 20:26:36 +04:00
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char *sysname; /**< Name of OS in use on this node. */
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char *nodename; /**< Fully qualified host name on the network. */
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char *release; /**< Release level of the operating system. */
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char *version; /**< Version of the operating system release. */
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char *machine; /**< Type of hardware composing this node. */
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char *path_sep; /**< Path separation char, saved as string.
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* The character used to separate directories in the path -
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* a value that is usually either a '\' or '/', depending
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* upon the operating system
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*/
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char *user; /**< User id on this system. */
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char *session_dir; /**< Location of user writable temp dir.
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* The session directory has the form
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* <prefix><openmpi-sessions>, where the prefix
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* can either be provided by the user via the
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* --tmpdir command-line flag, the use of one of several
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* environmental variables, or else a default location. The
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* function ompi_session_dir_init() develops
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* the name of this directory, creates it, and stores the name
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* in this location.
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*/
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char *enviro; /**< Computing environment employed on this system.
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* Indicates the local computing environment for managing
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* and scheduling resources - e.g., SLURM, PBS, LSF, or BProc
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*/
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char *suffix; /**< Automatic suffix added to file names.
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* Some computing environments automatically "tag" files
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* created by applications with a computer-generated suffix
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* to ensure uniqueness of the file name. This field records
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* that value for future use.
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*/
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char *sock_stdin; /**< Path name to temp file for stdin. */
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char *sock_stdout; /**< Path name to temp file for stdout. */
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char *sock_stderr; /**< Path name to temp file for stderr. */
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2004-05-21 01:28:59 +04:00
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};
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typedef struct ompi_sys_info_t ompi_sys_info_t;
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2004-05-20 17:54:14 +04:00
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extern ompi_sys_info_t ompi_system_info;
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2004-05-26 23:11:55 +04:00
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/**
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* Discover and record a wide range of information about the system upon which
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2004-05-27 20:26:36 +04:00
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* this code is executing. ompi_sys_info populates a global variable with information about the system
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* upon which the process is executing. This function can be executed multiple times - the universe
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* process through ompi_init(), and each application process via mpi_init().
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2004-05-26 23:11:55 +04:00
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*
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* @retval None
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2004-05-27 20:26:36 +04:00
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*/
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2004-05-26 23:11:55 +04:00
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2004-05-26 06:23:01 +04:00
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void ompi_sys_info(void);
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