NAME

drmaa_job_ps, drmaa_control, - Monitor and control jobs

SYNOPSIS

#include "drmaa.h"

int drmaa_job_ps(

const char *job_id,
int *remote_ps,
char *error_diagnosis,
size_t error_diag_len

);

int drmaa_control(

const char *jobid,
int action,
char *error_diagnosis,
size_t error_diag_len

);

DESCRIPTION

The drmaa_job_ps() function returns the status of the Grid Engine job job_id into the integer pointed to by remote_ps. Possible return values are listed below. See sge_status(5) for the correspondence between them and the Grid Engine status.

DRMAA_PS_UNDETERMINED	job status cannot be determined
DRMAA_PS_QUEUED_ACTIVE	job is queued and active
DRMAA_PS_SYSTEM_ON_HOLD	job is queued and in system hold
DRMAA_PS_USER_ON_HOLD	job is queued and in user hold
DRMAA_PS_USER_SYSTEM_ON_HOLD	job is queued and in user and system hold
DRMAA_PS_RUNNING	job is running
DRMAA_PS_SYSTEM_SUSPENDED	job is system suspended
DRMAA_PS_USER_SUSPENDED	job is user suspended
DRMAA_PS_DONE	job finished normally
DRMAA_PS_FAILED	job finished, but failed

Jobs' user hold and user suspend states can be controlled via drmaa_control(3). For affecting system hold and system suspend states the appropriate Grid Engine interfaces must be used.

drmaa_control()

The drmaa_control() function applies control operations on Grid Engine jobs. jobid may contain either an Grid Engine jobid or `DRMAA_JOB_IDS_SESSION_ALL' to refer to all jobs submitted during the DRMAA session opened using drmaa_init(3). Legal values for action and their meanings are:

DRMAA_CONTROL_SUSPEND	suspend the job
DRMAA_CONTROL_RESUME	resume the job
DRMAA_CONTROL_HOLD	put the job on-hold
DRMAA_CONTROL_RELEASE	release the hold on the job
DRMAA_CONTROL_TERMINATE	kill the job

The DRMAA suspend/resume operations are equivalent to the use of -sj jobid and -usj jobid options with Grid Engine qmod(1). The DRMAA hold/release operations are equivalent to the use of Grid Engine qhold(1) and qrls(1). The DRMAA terminate operation is equivalent to the use of Grid Engine qdel(1). Only user hold and user suspend can be controlled via drmaa_control(3). For affecting system hold and system suspend states the appropriate Grid Engine interfaces must be used.

ENVIRONMENTAL VARIABLES

SGE_ROOT: Specifies the location of the Grid Engine standard configuration files.
SGE_CELL: If set, specifies the default Grid Engine cell to be used. To address a Grid Engine cell Grid Engine uses (in the order of precedence):

The name of the cell specified in the environment variable SGE_CELL, if it is set.

The name of the default cell, i.e. default.

SGE_DEBUG_LEVEL: If set, specifies that debug information should be written to stderr. In addition the level of detail in which debug information is generated is defined.
SGE_QMASTER_PORT: If set, specifies the tcp port on which sge_qmaster(8) is expected to listen for communication requests. Most installations will use a services map entry instead to define that port.

RETURN VALUES

Upon successful completion, drmaa_job_ps(), and drmaa_control() return DRMAA_ERRNO_SUCCESS. Other values indicate an error. Up to error_diag_len characters of error related diagnosis information is then provided in the buffer, error_diagnosis.

ERRORS

The drmaa_job_ps() and drmaa_control() functions may fail with:

DRMAA_ERRNO_INTERNAL_ERROR: Unexpected or internal DRMAA error, like system call failure, etc.
DRMAA_ERRNO_DRM_COMMUNICATION_FAILURE: Could not contact DRM system for this request.
DRMAA_ERRNO_AUTH_FAILURE: The specified request was not processed successfully due to authorization failure.
DRMAA_ERRNO_INVALID_ARGUMENT: The input value for an argument is invalid.
DRMAA_ERRNO_NO_ACTIVE_SESSION: Failed because there is no active session.
DRMAA_ERRNO_NO_MEMORY: Failed allocating memory.
DRMAA_ERRNO_INVALID_JOB: The specified job does not exist.

The drmaa_control() function may fail with:

DRMAA_ERRNO_RESUME_INCONSISTENT_STATE: The job is not suspended. The resume request will not be processed.
DRMAA_ERRNO_SUSPEND_INCONSISTENT_STATE: The job is not running and thus cannot be suspended.
DRMAA_ERRNO_HOLD_INCONSISTENT_STATE: The job cannot be moved to a hold state.
DRMAA_ERRNO_RELEASE_INCONSISTENT_STATE: The job is not in a hold state.