wiki:JobSubmission
Last modified 6 weeks ago Last modified on 07/25/14 00:51:16

Submitting jobs locally

On the command line

create_work is a command-line tool for submitting jobs. Run it from the project root directory.

create_work [ arguments ] infile_1 ... infile_n

Create a job with the given input files (which must already be staged).

Mandatory arguments are:

--appname name
application name

Optional arguments are:

--wu_name name
workunit name (default: appname_PID_TIME)
--wu_template filename
Input template filename relative to project root; usually in templates/. Default: templates/appname_in.
--result_template filename
Output template filename, relative to project root; usually in templates/. Default: templates/appname_out.
--batch n
--priority n
high values are assigned before low values; see --priority_order and --priority_order_create_time options on the feeder
--stdin
Read stdin, and create one job per line (see below).
--broadcast, --target_host, etc.
Assign or broadcast this job.
The following job parameters may be passed in the input template, or as command-line arguments to create_work; the input template has precedence. If not specified, the given defaults will be used.

--command_line "-flags foo"
--rsc_fpops_est x
FLOPs estimate; default 3600e9
--rsc_fpops_bound x
FPOPs bound; default 86400e9
--rsc_memory_bound x
default 5e8
--rsc_disk_bound x
default 1e9
--rsc_bandwidth_bound x
0 (no bound)
--delay_bound x
default 1 week
--hr_class N
homogeneous redundancy class
--min_quorum x
default 2
--target_nresults x
default 2
--max_error_results x
default 3
--max_total_results x
default 10
--max_success_results x
default 6
--opaque N
--additional_xml 'x'
This can be used to supply, for example, <credit>12.4</credit>.

Remote input files

By default, input files are staged locally on the project server, and are identified by their filename.

However, you can also use input files that are remote, i.e. on a web server other than the project server. In that case you must specify them as

--remote_file URL nbytes MD5

Creating multiple jobs

The --stdin option lets you create many jobs in a single invocation of the create_work script, greatly increasing the efficiency of creating large batches of jobs.

Descriptions of the jobs are read from standard input. Each line specifies a job, and may include the following options:

--command_line "x"
the command line --wu_name::: the job name
--broadcast, --target_host, etc.
assign or broadcast this job.

The remaining items specify input files: either physical filenames, or --remote_file arguments as described aboe.

From a C++ program

BOINC's library provides a function for submitting jobs:

int create_work(
    DB_WORKUNIT& wu,
    const char* wu_template,                  // contents, not path
    const char* result_template_filename,     // relative to project root
    const char* result_template_filepath,     // absolute or relative to current dir
    const char** infiles,                     // array of input file names
    int ninfiles
    SCHED_CONFIG&,
    const char* command_line = NULL,
    const char* additional_xml = NULL
);

The name and appid fields of the DB_WORKUNIT structure must always be initialized. Other job parameters may be passed either in the DB_WORKUNIT structure or in the input template file (the latter has priority). On a successful return, wu.id contains the database ID of the workunit.

If you want to use remote input files, use the following variant:

int create_work2(
    DB_WORKUNIT& wu,
    const char* wu_template,                  // contents, not path
    const char* result_template_filename,     // relative to project root
    const char* result_template_filepath,     // absolute or relative to current dir
    vector<INFILE_DESC> infiles,              // list of input file descriptions; see below
    SCHED_CONFIG&,
    const char* command_line = NULL,
    const char* additional_xml = NULL
);

struct INFILE_DESC {
    bool is_remote;

    // the following defined if remote (physical name is jf_MD5)
    //
    double nbytes;
    char md5[64];
    char url[1024];         // make this a vector to support multiple URLs

    // the following defined if not remote
    //
    char name[1024];     // physical name
};