// Find a file with work, and send.
// This is guaranteed to send work if ANY is available for this user.
// However, it ignores the working set,
// and should be done only if we fail to send work from the working set.
//
// logic:
// min_resultname = ""
// loop
// R = first unsent result where filename>min_resultname order by filename
// // order by filename implies order by ID
// send_results_for_file(R.filename)
// // this skips disqualified results
// min_resultname = R.filename;
//
static int send_new_file_work_deterministic_seeded(
int& nsent, const char *start_f, const char *end_f
) {
SCHED_DB_RESULT result;
char filename[256], min_resultname[256], query[1024];
int retval;
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_new_file_work_deterministic_seeded() start=%s end=%s\n",
start_f, end_f?end_f:"+Inf"
);
}
strcpy(min_resultname, start_f);
while (1) {
// are we done with the search yet?
if (end_f && strcmp(min_resultname, end_f)>=0)
break;
#if 0
// an alternative here is to add ANOTHER index on name, server_state
// to the result table.
sprintf(query,
"INNER JOIN (SELECT id FROM result WHERE server_state=%d and name>'%s' order by name limit 1) AS single USING (id)",
RESULT_SERVER_STATE_UNSENT, min_resultname
);
#endif
sprintf(query,
"INNER JOIN (SELECT id FROM result WHERE name>'%s' order by name limit 1) AS single USING (id)",
min_resultname
);
retval = result.lookup(query);
if (retval) break; // no more unsent results or at the end of the filenames, return -1
retval = extract_filename(result.name, filename);
if (retval) return retval; // not locality scheduled, now what???
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_new_file_work_deterministic will try filename %s\n", filename
);
}
retval = send_results_for_file(filename, nsent, false);
if (retval==ERR_NO_APP_VERSION || retval==ERR_INSUFFICIENT_RESOURCE) return retval;
if (nsent>0 || !work_needed(true)) break;
// construct a name which is lexically greater than the name of any result
// which uses this file.
sprintf(min_resultname, "%s__~", filename);
}
return 0;
}
static int send_new_file_work_working_set() {
char filename[256];
int retval, nsent;
retval = get_working_set_filename(filename, is_host_slow());
if (retval) return retval;
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_new_file_working_set will try filename %s\n", filename
);
}
return send_results_for_file(filename, nsent, true);
}
// DAVID, this is missing a return value! Am I right that this will
// also eventually move 'non locality' work through and out of the
// system?
//
// This looks for work created in the range t_min < t < t_max. Use
// t_min=INT_MIN if you wish to leave off the left constraint.
//
static int send_old_work(int t_min, int t_max) {
char buf[1024], filename[256];
int retval, extract_retval, nsent;
SCHED_DB_RESULT result;
int now=time(0);
if (!work_needed(true)) {
return 0;
}
// restrict values to full hours;
// this allows the DB to cache query results in some cases
//
t_max = (t_max/3600)*3600;
boinc_db.start_transaction();
// Note: the following queries look convoluted.
// But apparently the simpler versions (without the inner join)
// are a lot slower.
//
if (t_min != INT_MIN) {
sprintf(buf,
"INNER JOIN (SELECT id FROM result WHERE server_state=%d and %d<create_time and create_time<%d limit 1) AS single USING (id)",
RESULT_SERVER_STATE_UNSENT, t_min, t_max
);
}
else {
sprintf(buf,
"INNER JOIN (SELECT id FROM result WHERE server_state=%d and create_time<%d limit 1) AS single USING (id)",
RESULT_SERVER_STATE_UNSENT, t_max
);
}
retval = result.lookup(buf);
if (!retval) {
retval = possibly_send_result(result);
boinc_db.commit_transaction();
if (!retval) {
double age=(now-result.create_time)/3600.0;
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_old_work(%s) sent result created %.1f hours ago [RESULT#%d]\n",
result.name, age, result.id
);
}
extract_retval=extract_filename(result.name, filename);
if (!extract_retval) {
send_results_for_file(filename, nsent, false);
} else {
// David, is this right? Is this the only place in
// the locality scheduler that non-locality work //
// gets done?
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] Note: sent NON-LOCALITY result %s\n", result.name
);
}
}
} else if (retval == ERR_NO_APP_VERSION || retval==ERR_INSUFFICIENT_RESOURCE) {
// if no app version found or no resources, give up completely!
return retval;
}
} else {
boinc_db.commit_transaction();
}
if (retval) {
double older=(now-t_max)/3600.0;
if (t_min != INT_MIN) {
double young=(now-t_min)/3600.0;
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_old_work() no feasible result younger than %.1f hours and older than %.1f hours\n",
young, older
);
}
}
else {
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_old_work() no feasible result older than %.1f hours\n",
older
);
}
}
}
// DAVID, YOU CHANGED THIS FROM VOID TO INT. IS THIS THE RIGHT
// RETURN VAL? You should probably use the return value from
// sent_results_for_file as well.
return retval;
}
void send_work_locality() {
int i, nsent, nfiles, j;
// seed the random number generator
unsigned int seed=time(0)+getpid();
srand(seed);
#ifdef EINSTEIN_AT_HOME
std::vector<FILE_INFO> eah_copy = g_request->file_infos;
g_request->file_infos.clear();
g_request->files_not_needed.clear();
nfiles = (int) eah_copy.size();
for (i=0; i<nfiles; i++) {
char *fname = eah_copy[i].name;
if (is_workunit_file(fname)) {
// these are files that we will use for locality scheduling and
// to search for work
//
g_request->file_infos.push_back(eah_copy[i]);
} else if (is_sticky_file(fname)) { // was if(!data_files)
// these files MIGHT be deleted from host if we need to make
// disk space there
//
g_request->file_delete_candidates.push_back(eah_copy[i]);
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] [HOST#%d] removing file %s from file_infos list\n",
g_reply->host.id, fname
);
}
} else {
// these files WILL be deleted from the host
//
g_request->files_not_needed.push_back(eah_copy[i]);
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] [HOST#%d] adding file %s to files_not_needed list\n",
g_reply->host.id, fname
);
}
}
}
#endif // EINSTEIN_AT_HOME
nfiles = (int) g_request->file_infos.size();
for (i=0; i<nfiles; i++)
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] [HOST#%d] has file %s\n",
g_reply->host.id, g_request->file_infos[i].name
);
}
// Look for work in order of increasing file name, or randomly?
//
if (config.locality_scheduling_sorted_order) {
sort(g_request->file_infos.begin(), g_request->file_infos.end(), file_info_order);
j = 0;
} else {
if (!nfiles) nfiles = 1;
j = rand()%nfiles;
}
// send old work if there is any. send this only to hosts which have
// high-bandwidth connections, since asking dial-up users to upload
// (presumably large) data files is onerous.
//
if (config.locality_scheduling_send_timeout && g_request->host.n_bwdown>100000) {
int until=time(0)-config.locality_scheduling_send_timeout;
int retval_sow=send_old_work(INT_MIN, until);
if (retval_sow==ERR_NO_APP_VERSION || retval_sow==ERR_INSUFFICIENT_RESOURCE) return;
}
// send work for existing files
//
for (i=0; i<(int)g_request->file_infos.size(); i++) {
int k = (i+j)%nfiles;
int retval_srff;
if (!work_needed(true)) break;
FILE_INFO& fi = g_request->file_infos[k];
retval_srff=send_results_for_file(
fi.name, nsent, false
);
if (retval_srff==ERR_NO_APP_VERSION || retval_srff==ERR_INSUFFICIENT_RESOURCE) return;
// if we couldn't send any work for this file, and we STILL need work,
// then it must be that there was no additional work remaining for this
// file which is feasible for this host. In this case, delete the file.
// If the work was not sent for other (dynamic) reason such as insufficient
// cpu, then DON'T delete the file.
//
if (nsent == 0 && work_needed(true) && config.file_deletion_strategy == 1) {
g_reply->file_deletes.push_back(fi);
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] [HOST#%d]: delete file %s (not needed)\n",
g_reply->host.id, fi.name
);
}
#ifdef EINSTEIN_AT_HOME
// For name matching pattern h1_XXXX.XX_S5R4
// generate corresponding l1_XXXX.XX_S5R4 and *_S5R7 patterns and delete it also
//
if (strlen(fi.name)==15 && !strncmp("h1_", fi.name, 3)) {
FILE_INFO fil4,fil7,fih7;
fil4=fi;
fil4.name[0]='l';
fil7=fil4;
fil7.name[14]='7';
fih7=fi;
fih7.name[14]='7';
g_reply->file_deletes.push_back(fil4);
g_reply->file_deletes.push_back(fil7);
g_reply->file_deletes.push_back(fih7);
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] [HOST#%d]: delete files %s,%s,%s (not needed)\n",
g_reply->host.id, fil4.name,fil7.name,fih7.name
);
}
}
#endif
} // nsent==0
} // loop over files already on the host
// send new files if needed
//
if (work_needed(true)) {
send_new_file_work();
}
}
// DAVID, this is missing a return value! Am I right that this will
// also eventually move 'non locality' work through and out of the
// system?
//
// This looks for work created in the range t_min < t < t_max. Use
// t_min=INT_MIN if you wish to leave off the left constraint.
//
static int send_old_work(int t_min, int t_max) {
char buf[1024], filename[256];
int retval, extract_retval, nsent;
DB_RESULT result;
int now=time(0);
if (!work_needed(true)) {
return 0;
}
boinc_db.start_transaction();
if (t_min != INT_MIN) {
sprintf(buf, "where server_state=%d and %d<create_time and create_time<%d limit 1",
RESULT_SERVER_STATE_UNSENT, t_min, t_max
);
}
else {
sprintf(buf, "where server_state=%d and create_time<%d limit 1",
RESULT_SERVER_STATE_UNSENT, t_max
);
}
retval = result.lookup(buf);
if (!retval) {
retval = possibly_send_result(result);
boinc_db.commit_transaction();
if (!retval) {
double age=(now-result.create_time)/3600.0;
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_old_work(%s) sent result created %.1f hours ago [RESULT#%d]\n",
result.name, age, result.id
);
}
extract_retval=extract_filename(result.name, filename);
if (!extract_retval) {
send_results_for_file(filename, nsent, false);
} else {
// David, is this right? Is this the only place in
// the locality scheduler that non-locality work //
// gets done?
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] Note: sent NON-LOCALITY result %s\n", result.name
);
}
}
} else if (retval == ERR_NO_APP_VERSION || retval==ERR_INSUFFICIENT_RESOURCE) {
// if no app version found or no resources, give up completely!
return retval;
}
} else {
boinc_db.commit_transaction();
}
if (retval) {
double older=(now-t_max)/3600.0;
if (t_min != INT_MIN) {
double young=(now-t_min)/3600.0;
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_old_work() no feasible result younger than %.1f hours and older than %.1f hours\n",
young, older
);
}
}
else {
if (config.debug_locality) {
log_messages.printf(MSG_NORMAL,
"[locality] send_old_work() no feasible result older than %.1f hours\n",
older
);
}
}
}
// DAVID, YOU CHANGED THIS FROM VOID TO INT. IS THIS THE RIGHT
// RETURN VAL? You should probably use the return value from
// sent_results_for_file as well.
return retval;
}