// Berkeley Open Infrastructure for Network Computing // http://boinc.berkeley.edu // Copyright (C) 2007 University of California // // This is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; // either version 2.1 of the License, or (at your option) any later version. // // This software is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. // See the GNU Lesser General Public License for more details. // // To view the GNU Lesser General Public License visit // http://www.gnu.org/copyleft/lesser.html // or write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // sample_work_generator.C: an example BOINC work generator. // This work generator has the following properties // (you may need to change some or all of these): // // - Runs as a daemon, and creates an unbounded supply of work. // It attempts to maintain a "cushion" of 100 unsent job instances. // (your app may not work this way; e.g. you might create work in batches) // - Creates work for the application "uppercase". // - Creates a new input file for each job; // the file (and the workunit names) contain a timestamp // and sequence number, so that they're unique. #include "boinc_db.h" #include "error_numbers.h" #include "backend_lib.h" #include "parse.h" #include "sched_config.h" #include "sched_util.h" #include "sched_msgs.h" #define CUSHION 100 // maintain at least this many unsent results #define REPLICATION_FACTOR 2 // globals // char* wu_template; DB_APP app; int start_time; int seqno; SCHED_CONFIG config; // create one new job // int make_job() { DB_WORKUNIT wu; char name[256], path[256], buf[256]; const char* infiles[1]; int retval; // make a unique name (for the job and its input file) // sprintf(name, "uc_%d_%d", start_time, seqno++); // Create the input file. // Put it at the right place in the download dir hierarchy // retval = config.download_path(name, path); if (retval) return retval; FILE* f = fopen(path, "w"); if (!f) return ERR_FOPEN; fprintf(f, "This is the input file for job %s", name); fclose(f); // Fill in the job parameters // wu.clear(); wu.appid = app.id; strcpy(wu.name, name); wu.rsc_fpops_est = 1e12; wu.rsc_fpops_bound = 1e14; wu.rsc_memory_bound = 1e8; wu.rsc_disk_bound = 1e8; wu.delay_bound = 86400; wu.min_quorum = REPLICATION_FACTOR; wu.target_nresults = REPLICATION_FACTOR; wu.max_error_results = REPLICATION_FACTOR*4; wu.max_total_results = REPLICATION_FACTOR*8; wu.max_success_results = REPLICATION_FACTOR*4; infiles[0] = name; // Register the job with BOINC // return create_work( wu, wu_template, "templates/uc_result", "../templates/uc_result", infiles, 1, config ); } void main_loop() { int retval; while (1) { check_stop_daemons(); int n; retval = count_unsent_results(n); if (n > CUSHION) { sleep(60); } else { int njobs = (CUSHION-n)/REPLICATION_FACTOR; log_messages.printf(SCHED_MSG_LOG::MSG_DEBUG, "Making %d jobs\n", njobs ); for (int i=0; i