538 строки
20 KiB
C
538 строки
20 KiB
C
/*
|
|
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2005 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) 2008 UT-Battelle, LLC. All rights reserved.
|
|
* Copyright (c) 2011 Los Alamos National Security, LLC.
|
|
* All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "orte_config.h"
|
|
#include "orte/constants.h"
|
|
|
|
#include "opal/mca/installdirs/installdirs.h"
|
|
#include "opal/util/output.h"
|
|
#include "orte/util/show_help.h"
|
|
#include "orte/mca/errmgr/errmgr.h"
|
|
#include "orte/mca/ras/base/ras_private.h"
|
|
#include "ras_alps.h"
|
|
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <alps/apInfo.h>
|
|
|
|
typedef int (*parser_fn_t)(char **val_if_found, FILE *fp,
|
|
const char *var_name);
|
|
|
|
typedef struct orte_ras_alps_sysconfig_t {
|
|
/* path of file to parse */
|
|
char *path;
|
|
/* target variable name */
|
|
char *var_name;
|
|
/* parser to use */
|
|
parser_fn_t parse;
|
|
} orte_ras_alps_sysconfig_t;
|
|
|
|
/* /// Local Functions /// */
|
|
static int orte_ras_alps_allocate(orte_job_t *jdata, opal_list_t *nodes);
|
|
|
|
static int orte_ras_alps_finalize(void);
|
|
|
|
static char *ras_alps_getline(FILE *fp);
|
|
|
|
static int orte_ras_alps_read_appinfo_file(opal_list_t *nodes,
|
|
char *filename,
|
|
unsigned int *uMe);
|
|
|
|
static char *orte_ras_get_appinfo_path(void);
|
|
|
|
static int parser_ini(char **val_if_found, FILE *fp, const char *var_name);
|
|
|
|
static int parser_separated_columns(char **val_if_found, FILE *fp,
|
|
const char *var_name);
|
|
|
|
/* /// Local Variables /// */
|
|
static const orte_ras_alps_sysconfig_t sysconfigs[] = {
|
|
{"/etc/sysconfig/alps", "ALPS_SHARED_DIR_PATH", parser_ini},
|
|
{"/etc/alps.conf" , "sharedDir" , parser_separated_columns},
|
|
/* must be last element */
|
|
{NULL , NULL , NULL}
|
|
};
|
|
|
|
/* /// Global Variables /// */
|
|
orte_ras_base_module_t orte_ras_alps_module = {
|
|
orte_ras_alps_allocate,
|
|
orte_ras_alps_finalize
|
|
};
|
|
|
|
/* Parses: VAR_NAME=val text files - Pseudo INI */
|
|
static int
|
|
parser_ini(char **val_if_found, FILE *fp, const char *var_name)
|
|
{
|
|
char *alps_config_str = NULL;
|
|
|
|
/* invalid argument */
|
|
if (NULL == val_if_found) {
|
|
ORTE_ERROR_LOG(ORTE_ERR_BAD_PARAM);
|
|
return ORTE_ERR_BAD_PARAM;
|
|
}
|
|
|
|
*val_if_found = NULL;
|
|
|
|
while ((alps_config_str = ras_alps_getline(fp))) {
|
|
char *cpq;
|
|
char *cpr;
|
|
|
|
cpq = strchr(alps_config_str, '#'); /* Parse comments, actually ANY # */
|
|
cpr = strchr(alps_config_str, '='); /* Parse for variables */
|
|
if (!cpr || /* Skip if not definition */
|
|
(cpq && cpq < cpr)) { /* Skip if commented */
|
|
free(alps_config_str);
|
|
continue;
|
|
}
|
|
for (cpr--; /* Kill trailing whitespace */
|
|
(*cpr == ' ' || *cpr == '\t'); cpr--);
|
|
for (cpq = alps_config_str; /* Kill leading whitespace */
|
|
(*cpq == ' ' || *cpq == '\t'); cpq++);
|
|
/* Filter to needed variable */
|
|
if (strncmp(cpq, var_name, strlen(var_name))) {
|
|
/* Sorry, not the variable name that we are looking for */
|
|
free(alps_config_str);
|
|
continue;
|
|
}
|
|
if (!(cpq = strchr(cpr, '"'))) { /* Can't find pathname start */
|
|
free(alps_config_str);
|
|
ORTE_ERROR_LOG(ORTE_ERR_FILE_OPEN_FAILURE);
|
|
return ORTE_ERR_FILE_OPEN_FAILURE;
|
|
}
|
|
if (!(cpr = strchr(++cpq, '"'))) { /* Can't find pathname end */
|
|
free(alps_config_str);
|
|
ORTE_ERROR_LOG(ORTE_ERR_FILE_OPEN_FAILURE);
|
|
return ORTE_ERR_FILE_OPEN_FAILURE;
|
|
}
|
|
*cpr = '\0';
|
|
if (strlen(cpq) + 8 > PATH_MAX) { /* Bad configuration */
|
|
free(alps_config_str);
|
|
ORTE_ERROR_LOG(ORTE_ERR_FILE_OPEN_FAILURE);
|
|
return ORTE_ERR_FILE_OPEN_FAILURE;
|
|
}
|
|
/* Success! */
|
|
asprintf(val_if_found, "%s/appinfo", cpq);
|
|
if (NULL == val_if_found) {
|
|
free(alps_config_str);
|
|
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
|
|
return ORTE_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
free(alps_config_str);
|
|
return ORTE_SUCCESS;
|
|
}
|
|
/* We didn't find what we were looking for, but no unrecoverable errors
|
|
* occurred in the process.
|
|
* */
|
|
return ORTE_SUCCESS;
|
|
}
|
|
|
|
/* Parses: VAR_NAME val text files */
|
|
static int
|
|
parser_separated_columns(char **val_if_found, FILE *fp, const char *var_name)
|
|
{
|
|
char *alps_config_str = NULL;
|
|
int var_len = strlen(var_name);
|
|
int i;
|
|
|
|
/* invalid argument */
|
|
if (NULL == val_if_found) {
|
|
ORTE_ERROR_LOG(ORTE_ERR_BAD_PARAM);
|
|
return ORTE_ERR_BAD_PARAM;
|
|
}
|
|
|
|
*val_if_found = NULL;
|
|
|
|
while ((alps_config_str = ras_alps_getline(fp))) {
|
|
char *cpq = alps_config_str;
|
|
char *cpr;
|
|
|
|
/* Eat whitespace */
|
|
while (' ' == *cpq || '\t' == *cpq) {
|
|
cpq++;
|
|
}
|
|
/* Ignore comments and variable names that aren't what we are looking
|
|
* for */
|
|
if ('#' == *cpq || strncmp(cpq, var_name, var_len)) {
|
|
free(alps_config_str);
|
|
continue;
|
|
}
|
|
/* Move to end of the variable name */
|
|
for (i = 0; i < var_len && '\0' != *cpq; ++i, ++cpq);
|
|
/* Eat whitespace until we hit val */
|
|
while (' ' == *cpq || '\t' == *cpq) {
|
|
cpq++;
|
|
}
|
|
/* Now advance cpr until end of value */
|
|
cpr = cpq;
|
|
while ('\0' != *cpr && (' ' != *cpr || '\t' != *cpr)) {
|
|
cpr++;
|
|
}
|
|
*cpr = '\0';
|
|
/* Bad configuration sanity check */
|
|
if (strlen(cpq) + 8 > PATH_MAX) {
|
|
free(alps_config_str);
|
|
ORTE_ERROR_LOG(ORTE_ERR_FILE_OPEN_FAILURE);
|
|
return ORTE_ERR_FILE_OPEN_FAILURE;
|
|
}
|
|
/* Success! */
|
|
asprintf(val_if_found, "%s/appinfo", cpq);
|
|
if (NULL == val_if_found) {
|
|
free(alps_config_str);
|
|
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
|
|
return ORTE_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
free(alps_config_str);
|
|
return ORTE_SUCCESS;
|
|
}
|
|
/* We didn't find what we were looking for, but no unrecoverable errors
|
|
* occurred in the process.
|
|
* */
|
|
return ORTE_SUCCESS;
|
|
}
|
|
|
|
/* Gets ALPS scheduler information file pathname from system configuration. On
|
|
* our XK6 testbed, ALPS_SHARED_DIR_PATH isn't set in /etc/sysconfig/alps. The
|
|
* shared directory path is set in /etc/alps.conf and its corresponding variable
|
|
* is named sharedDir. We have to support both because XE6 systems (and
|
|
* probably others) still rely on ALPS_SHARED_DIR_PATH and /etc/sysconfig/alps.
|
|
*/
|
|
static char *
|
|
orte_ras_get_appinfo_path(void)
|
|
{
|
|
int i, rc = ORTE_ERROR;
|
|
FILE *fp = NULL;
|
|
char *appinfo_path = NULL;
|
|
|
|
/* iterate over all the available ALPS system configurations name pairs
|
|
* until we either fail or find what we are looking for.
|
|
*/
|
|
for (i = 0; NULL != sysconfigs[i].path; ++i) {
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: Trying ALPS configuration "
|
|
"file: \"%s\"",
|
|
sysconfigs[i].path);
|
|
if (NULL == (fp = fopen(sysconfigs[i].path, "r"))) {
|
|
int err = errno;
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: Skipping ALPS "
|
|
"configuration file: \"%s\" (%s).",
|
|
sysconfigs[i].path, strerror(err));
|
|
continue;
|
|
}
|
|
/* Let the search begin */
|
|
rc = sysconfigs[i].parse(&appinfo_path, fp, sysconfigs[i].var_name);
|
|
/* no longer needed */
|
|
fclose(fp);
|
|
|
|
if (ORTE_SUCCESS == rc) {
|
|
/* Success! */
|
|
if (NULL != appinfo_path) {
|
|
break;
|
|
}
|
|
/* else we didn't find what we were looking for - just continue */
|
|
else {
|
|
continue;
|
|
}
|
|
}
|
|
/* Failure */
|
|
else {
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: failure "
|
|
"(get_appinfo_dir_path = %d)", rc);
|
|
return NULL;
|
|
}
|
|
}
|
|
/* Were we successful? */
|
|
if (NULL != sysconfigs[i].path) {
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: Located ALPS scheduler file: "
|
|
"\"%s\"", appinfo_path);
|
|
return appinfo_path;
|
|
}
|
|
/* Nope */
|
|
else {
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: Could not locate ALPS "
|
|
"scheduler file.");
|
|
return NULL;
|
|
}
|
|
|
|
/* Never reached */
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Discover available (pre-allocated) nodes. Allocate the
|
|
* requested number of nodes/process slots to the job.
|
|
*/
|
|
static int
|
|
orte_ras_alps_allocate(orte_job_t *jdata, opal_list_t *nodes)
|
|
{
|
|
int ret;
|
|
char *appinfo_path = NULL;
|
|
|
|
if (0 == orte_ras_alps_res_id) {
|
|
orte_show_help("help-ras-alps.txt", "alps-env-var-not-found", 1);
|
|
return ORTE_ERR_NOT_FOUND;
|
|
}
|
|
if (NULL == (appinfo_path = orte_ras_get_appinfo_path())) {
|
|
return ORTE_ERR_NOT_FOUND;
|
|
}
|
|
/* Parse ALPS scheduler information file (appinfo) for node list. */
|
|
if (ORTE_SUCCESS != (ret = orte_ras_alps_read_appinfo_file(
|
|
nodes,
|
|
appinfo_path,
|
|
(unsigned int *)&orte_ras_alps_res_id))) {
|
|
ORTE_ERROR_LOG(ret);
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Record the number of allocated nodes */
|
|
orte_num_allocated_nodes = opal_list_get_size(nodes);
|
|
|
|
cleanup:
|
|
/* All done */
|
|
if (NULL != appinfo_path) {
|
|
free(appinfo_path);
|
|
}
|
|
if (ORTE_SUCCESS == ret) {
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: success");
|
|
}
|
|
else {
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: failure "
|
|
"(base_allocate_nodes = %d)", ret);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#define RAS_BASE_FILE_MAX_LINE_LENGTH (PATH_MAX * 2)
|
|
|
|
static char *
|
|
ras_alps_getline(FILE *fp)
|
|
{
|
|
char *ret = NULL, *input = NULL;
|
|
|
|
input = (char *)calloc(RAS_BASE_FILE_MAX_LINE_LENGTH + 1, sizeof(char));
|
|
/* out of resources */
|
|
if (NULL == input) {
|
|
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
|
|
return NULL;
|
|
}
|
|
ret = fgets(input, RAS_BASE_FILE_MAX_LINE_LENGTH, fp);
|
|
if (NULL != ret) {
|
|
input[strlen(input) - 1] = '\0'; /* remove newline */
|
|
return input;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
orte_ras_alps_read_appinfo_file(opal_list_t *nodes, char *filename,
|
|
unsigned int *uMe)
|
|
{
|
|
int iq;
|
|
int ix;
|
|
int iFd; /* file descriptor for appinfo */
|
|
int iTrips; /* counter appinfo read attempts */
|
|
int max_appinfo_read_attempts;
|
|
struct stat ssBuf; /* stat buffer */
|
|
size_t szLen; /* size of appinfo (file) */
|
|
off_t oNow; /* current appinfo data offset */
|
|
off_t oInfo=sizeof(appInfoHdr_t);
|
|
off_t oDet=sizeof(appInfo_t);
|
|
off_t oSlots;
|
|
off_t oEntry;
|
|
int32_t sNodes=0;
|
|
char *cpBuf;
|
|
char *hostname;
|
|
orte_node_t *node = NULL, *n2;
|
|
appInfoHdr_t *apHdr; /* ALPS header structure */
|
|
appInfo_t *apInfo; /* ALPS table info structure */
|
|
cmdDetail_t *apDet; /* ALPS command details */
|
|
placeList_t *apSlots; /* ALPS node specific info */
|
|
bool added;
|
|
opal_list_item_t *item;
|
|
|
|
orte_ras_alps_get_appinfo_attempts(&max_appinfo_read_attempts);
|
|
oNow=0;
|
|
iTrips=0;
|
|
while(!oNow) { /* Until appinfo read is complete */
|
|
iTrips++; /* Increment trip count */
|
|
|
|
iFd=open( filename, O_RDONLY );
|
|
if( iFd==-1 ) { /* If file absent, ALPS is down */
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: ALPS information open failure");
|
|
usleep(iTrips*50000); /* Increasing delays, .05 s/try */
|
|
|
|
/* Fail only when number of attempts have been exhausted. */
|
|
if( iTrips <= max_appinfo_read_attempts ) continue;
|
|
ORTE_ERROR_LOG(ORTE_ERR_FILE_OPEN_FAILURE);
|
|
return ORTE_ERR_FILE_OPEN_FAILURE;
|
|
}
|
|
if( fstat( iFd, &ssBuf )==-1 ) { /* If stat fails, access denied */
|
|
|
|
ORTE_ERROR_LOG(ORTE_ERR_NOT_AVAILABLE);
|
|
return ORTE_ERR_NOT_AVAILABLE;
|
|
}
|
|
|
|
szLen=ssBuf.st_size; /* Get buffer size */
|
|
cpBuf=malloc(szLen+1); /* Allocate buffer */
|
|
if (NULL == cpBuf) {
|
|
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
|
|
return ORTE_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
/* Repeated attempts to read appinfo, with an increasing delay between *
|
|
* successive attempts to allow scheduler I/O a chance to complete. */
|
|
if( (oNow=read( iFd, cpBuf, szLen ))!=(off_t)szLen ) {
|
|
|
|
/* This is where apstat fails; we will record it and try again. */
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:allocate: ALPS information read failure: %ld bytes", oNow);
|
|
|
|
free(cpBuf); /* Free (old) buffer */
|
|
close(iFd); /* Close (old) descriptor */
|
|
oNow=0; /* Reset byte count */
|
|
usleep(iTrips*50000); /* Increasing delays, .05 s/try */
|
|
|
|
/* Fail only when number of attempts have been exhausted. */
|
|
if( iTrips<=max_appinfo_read_attempts ) continue;
|
|
ORTE_ERROR_LOG(ORTE_ERR_FILE_READ_FAILURE);
|
|
return ORTE_ERR_FILE_READ_FAILURE;
|
|
}
|
|
}
|
|
close(iFd);
|
|
|
|
/* Now that we have the scheduler information, we just have to parse it for *
|
|
* the data that we seek. */
|
|
oNow=0;
|
|
apHdr=(appInfoHdr_t *)cpBuf;
|
|
|
|
/* Header info (apHdr) tells us how many entries are in the file: *
|
|
* *
|
|
* apHdr->apNum */
|
|
|
|
for( iq=0; iq<apHdr->apNum; iq++ ) { /* Parse all entries in file */
|
|
|
|
/* Just at this level, a lot of information is available: *
|
|
* *
|
|
* apInfo->apid ... ALPS job ID *
|
|
* apInfo->resId ... ALPS reservation ID *
|
|
* apInfo->numCmds ... Number of executables *
|
|
* apInfo->numPlaces ... Number of PEs */
|
|
apInfo=(appInfo_t *)(cpBuf+oNow+oInfo);
|
|
|
|
/* Calculate the dependent offsets. */
|
|
oSlots=sizeof(cmdDetail_t)*apInfo->numCmds;
|
|
oEntry=sizeof(placeList_t)*apInfo->numPlaces;
|
|
|
|
/* Also, we can extract details of commands currently running on nodes: *
|
|
* *
|
|
* apDet[].fixedPerNode ... PEs per node *
|
|
* apDet[].nodeCnt ... number of nodes in use *
|
|
* apDet[].memory ... MB/PE memory limit *
|
|
* apDet[].cmd ... command being run */
|
|
apDet=(cmdDetail_t *)(cpBuf+oNow+oInfo+oDet);
|
|
|
|
/* Finally, we get to the actual node-specific information: *
|
|
* *
|
|
* apSlots[ix].cmdIx ... index of apDet[].cmd *
|
|
* apSlots[ix].nid ... NodeID (NID) *
|
|
* apSlots[ix].procMask ... mask for processors... need 16-bit shift */
|
|
apSlots=(placeList_t *)(cpBuf+oNow+oInfo+oDet+oSlots);
|
|
|
|
oNow+=(oDet+oSlots+oEntry); /* Target next slot */
|
|
|
|
if( apInfo->resId != *uMe ) continue; /* Filter to our reservation Id */
|
|
|
|
for( ix=0; ix<apInfo->numPlaces; ix++ ) {
|
|
|
|
opal_output_verbose(5, orte_ras_base.ras_output,
|
|
"ras:alps:read_appinfo: got NID %d", apSlots[ix].nid);
|
|
|
|
asprintf( &hostname, "%d", apSlots[ix].nid );
|
|
if (NULL == hostname) {
|
|
ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE);
|
|
return ORTE_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
/* If this matches the prior nodename, just add to the slot count. */
|
|
if( NULL!=node && !strcmp(node->name, hostname) ) {
|
|
|
|
free(hostname); /* free hostname since not needed */
|
|
++node->slots;
|
|
} else { /* must be new, so add to list */
|
|
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:read_appinfo: added NID %d to list", apSlots[ix].nid);
|
|
|
|
node = OBJ_NEW(orte_node_t);
|
|
node->name = hostname;
|
|
node->launch_id = apSlots[ix].nid;
|
|
node->slots_inuse = 0;
|
|
node->slots_max = 0;
|
|
node->slots = 1;
|
|
/* need to order these node ids so the regex generator
|
|
* can properly function
|
|
*/
|
|
added = false;
|
|
for (item = opal_list_get_first(nodes);
|
|
item != opal_list_get_end(nodes);
|
|
item = opal_list_get_next(item)) {
|
|
n2 = (orte_node_t*)item;
|
|
if (node->launch_id < n2->launch_id) {
|
|
/* insert the new node before this one */
|
|
opal_list_insert_pos(nodes, item, &node->super);
|
|
added = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!added) {
|
|
/* add it to the end */
|
|
opal_list_append(nodes, &node->super);
|
|
}
|
|
sNodes++; /* Increment the node count */
|
|
}
|
|
}
|
|
break; /* Extended details ignored */
|
|
}
|
|
free(cpBuf); /* Free the buffer */
|
|
|
|
return ORTE_SUCCESS;
|
|
}
|
|
|
|
/* There's really nothing to do here */
|
|
static int
|
|
orte_ras_alps_finalize(void)
|
|
{
|
|
opal_output_verbose(1, orte_ras_base.ras_output,
|
|
"ras:alps:finalize: success (nothing to do)");
|
|
return ORTE_SUCCESS;
|
|
}
|
|
|