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boinc/sched/validator.cpp

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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC 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 3 of the License, or (at your option) any later version.
//
// BOINC 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.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// validator - check and validate results, and grant credit
//
// Must be linked with two functions
// check_set(): find a canonical result from a set of results
// check_pair(): compare a result with a canonical result
//
// We recommend that you use the versions of these in validate_util2.cpp,
// in which case you have to supply 3 simpler functions
// init_result()
// compare_results()
// cleanup_result()
// --app appname
// [-d N] [--debug_level N] log verbosity (1=least, 4=most)
// [--one_pass_N_WU N] Validate only N WU in one pass, then exit
// [--one_pass] make one pass through WU table, then exit
// [--mod n i] process only WUs with (id mod n) == i
// [--max_granted_credit X] limit maximum granted credit to X
// [--update_credited_job] add userid/wuid pair to credited_job table
//
// credit options. The default is to grant credit using an
// adaptive scheme that provides devices neutrality
//
// [--no_credit] don't grant credit
// Use this, e.g., if using trickles for credit
// [--credit_from_wu] get credit from WU XML
// [--credit_from_runtime X] grant credit based on runtime,
// assuming single-CPU app.
// X is the max runtime.
#include "config.h"
#include <unistd.h>
#include <climits>
#include <cmath>
#include <vector>
#include <cstdlib>
#include <string>
#include <signal.h>
#include "boinc_db.h"
#include "util.h"
#include "str_replace.h"
#include "str_util.h"
#include "error_numbers.h"
#include "svn_version.h"
#include "common_defs.h"
#include "credit.h"
#include "sched_config.h"
#include "sched_util.h"
#include "sched_msgs.h"
#include "validator.h"
#include "validate_util.h"
#include "validate_util2.h"
#ifdef GCL_SIMULATOR
#include "gcl_simulator.h"
#endif
#define LOCKFILE "validate.out"
#define PIDFILE "validate.pid"
#define SELECT_LIMIT 1000
#define SLEEP_PERIOD 5
int sleep_interval = SLEEP_PERIOD;
typedef enum {
NEVER,
DELAYED,
IMMEDIATE,
NO_CHANGE
} TRANSITION_TIME;
char app_name[256];
DB_APP app;
int wu_id_modulus=0;
int wu_id_remainder=0;
int one_pass_N_WU=0;
bool one_pass = false;
double max_granted_credit = 200 * 1000 * 365;
// limit credit to 1 TeraFLOP-year
bool update_credited_job = false;
bool credit_from_wu = false;
bool credit_from_runtime = false;
double max_runtime = 0;
bool no_credit = false;
int g_argc;
char **g_argv;
WORKUNIT* g_wup;
vector<DB_APP_VERSION_VAL> app_versions;
// cache of app_versions; the PFC statistics of these are
// updated in memory, and periodically flushed to the DB
bool is_unreplicated(WORKUNIT& wu) {
return (wu.target_nresults == 1 && app.target_nresults > 1);
}
// Here when a result has been validated.
// - update consecutive_valid
// - udpdate turnaround stats
// - insert credited_job record if needed
//
int is_valid(
DB_HOST& host, RESULT& result, WORKUNIT& wu, DB_HOST_APP_VERSION& hav
) {
DB_CREDITED_JOB credited_job;
int retval;
double turnaround = result.received_time - result.sent_time;
compute_avg_turnaround(host, turnaround);
// increment daily quota
//
hav.max_jobs_per_day++;
// increment consecutive_valid, but only if unreplicated
//
if (!is_unreplicated(wu)) {
hav.consecutive_valid++;
log_messages.printf(MSG_DEBUG,
"[HAV#%d] consecutive valid now %d\n",
hav.app_version_id, hav.consecutive_valid
);
}
if (update_credited_job) {
credited_job.userid = host.userid;
credited_job.workunitid = long(wu.opaque);
retval = credited_job.insert();
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%u] Warning: credited_job insert failed (userid: %d workunit: %f err: %s)\n",
result.id, host.userid, wu.opaque, boincerror(retval)
);
} else {
log_messages.printf(MSG_DEBUG,
"[RESULT#%u %s] added credited_job record [WU#%u OPAQUE#%f USER#%d]\n",
result.id, result.name, wu.id, wu.opaque, host.userid
);
}
}
return 0;
}
static inline void is_invalid(DB_HOST_APP_VERSION& hav) {
hav.consecutive_valid = 0;
if (hav.max_jobs_per_day > config.daily_result_quota) {
hav.max_jobs_per_day--;
}
}
// handle a workunit which has new results
//
int handle_wu(
DB_VALIDATOR_ITEM_SET& validator, std::vector<VALIDATOR_ITEM>& items
) {
int canonical_result_index = -1;
bool update_result, retry;
TRANSITION_TIME transition_time = NO_CHANGE;
int retval = 0, canonicalid = 0, x;
double credit = 0;
unsigned int i;
WORKUNIT& wu = items[0].wu;
g_wup = &wu;
if (wu.canonical_resultid) {
log_messages.printf(MSG_NORMAL,
"[WU#%u %s] Already has canonical result %d\n",
wu.id, wu.name, wu.canonical_resultid
);
++log_messages;
// Here if WU already has a canonical result.
// Get unchecked results and see if they match the canonical result
//
for (i=0; i<items.size(); i++) {
RESULT& result = items[i].res;
if (result.id == wu.canonical_resultid) {
canonical_result_index = i;
}
}
if (canonical_result_index == -1) {
log_messages.printf(MSG_CRITICAL,
"[WU#%u %s] Can't find canonical result %d\n",
wu.id, wu.name, wu.canonical_resultid
);
return 0;
}
RESULT& canonical_result = items[canonical_result_index].res;
// scan this WU's results, and check the unchecked ones
//
for (i=0; i<items.size(); i++) {
RESULT& result = items[i].res;
if (result.server_state != RESULT_SERVER_STATE_OVER) continue;
if (result.outcome != RESULT_OUTCOME_SUCCESS) continue;
switch (result.validate_state) {
case VALIDATE_STATE_INIT:
case VALIDATE_STATE_INCONCLUSIVE:
break;
default:
continue;
}
log_messages.printf(MSG_NORMAL,
"[WU#%u] handle_wu(): testing result %d\n",
wu.id, result.id
);
check_pair(result, canonical_result, retry);
if (retry) {
// this usually means an NFS mount has failed;
// arrange to try again later.
//
transition_time = DELAYED;
goto leave;
}
update_result = false;
if (result.outcome == RESULT_OUTCOME_VALIDATE_ERROR) {
update_result = true;
}
// this might be last result, so let transitioner
// trigger file delete etc. if needed
//
transition_time = IMMEDIATE;
DB_HOST host;
retval = host.lookup_id(result.hostid);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%u] lookup of host %d failed: %s\n",
result.id, result.hostid, boincerror(retval)
);
continue;
}
HOST host_initial = host;
bool update_hav = false;
DB_HOST_APP_VERSION hav;
retval = hav_lookup(hav, result.hostid,
generalized_app_version_id(result.app_version_id, result.appid)
);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%u %s] hav_lookup returned %d\n",
result.id, result.name, retval
);
hav.host_id = 0;
}
DB_HOST_APP_VERSION hav_orig = hav;
vector<DB_HOST_APP_VERSION> havv;
havv.push_back(hav);
vector<RESULT> rv;
switch (result.validate_state) {
case VALIDATE_STATE_VALID:
update_result = true;
update_hav = true;
log_messages.printf(MSG_NORMAL,
"[RESULT#%u %s] pair_check() matched: setting result to valid\n",
result.id, result.name
);
retval = is_valid(host, result, wu, havv[0]);
if (retval) {
log_messages.printf(MSG_NORMAL,
"[RESULT#%u %s] is_valid() error: %s\n",
result.id, result.name, boincerror(retval)
);
}
// do credit computation, but grant credit of canonical result
//
rv.push_back(result);
assign_credit_set(
wu, rv, app, app_versions, havv,
max_granted_credit, credit
);
if (!no_credit) {
result.granted_credit = canonical_result.granted_credit;
grant_credit(host, result.sent_time, result.granted_credit);
}
break;
case VALIDATE_STATE_INVALID:
update_result = true;
update_hav = true;
log_messages.printf(MSG_NORMAL,
"[RESULT#%u %s] pair_check() didn't match: setting result to invalid\n",
result.id, result.name
);
is_invalid(havv[0]);
}
if (hav.host_id && update_hav) {
log_messages.printf(MSG_NORMAL,
"[HOST#%d AV#%d] [outlier=%d] Updating HAV in db. pfc.n=%f->%f\n",
havv[0].host_id, havv[0].app_version_id, result.runtime_outlier, hav_orig.pfc.n,havv[0].pfc.n);
retval=havv[0].update_validator(hav_orig);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[HOST#%d AV%d] hav.update_validator() failed: %s\n",
hav.host_id, hav.app_version_id, boincerror(retval)
);
}
}
host.update_diff_validator(host_initial);
if (update_result) {
log_messages.printf(MSG_NORMAL,
"[RESULT#%u %s] granted_credit %f\n",
result.id, result.name, result.granted_credit
);
retval = validator.update_result(result);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%u %s] Can't update result: %s\n",
result.id, result.name, boincerror(retval)
);
}
}
}
} else {
// Here if WU doesn't have a canonical result yet.
// Try to get one
vector<RESULT> viable_results;
vector<DB_HOST_APP_VERSION> host_app_versions, host_app_versions_orig;
log_messages.printf(MSG_NORMAL,
"[WU#%u %s] handle_wu(): No canonical result yet\n",
wu.id, wu.name
);
++log_messages;
// make a vector of the "viable" (i.e. possibly canonical) results,
// and a parallel vector of host_app_versions
//
for (i=0; i<items.size(); i++) {
RESULT& result = items[i].res;
if (result.server_state != RESULT_SERVER_STATE_OVER) continue;
if (result.outcome != RESULT_OUTCOME_SUCCESS) continue;
if (result.validate_state == VALIDATE_STATE_INVALID) continue;
viable_results.push_back(result);
DB_HOST_APP_VERSION hav;
retval = hav_lookup(hav, result.hostid,
generalized_app_version_id(result.app_version_id, result.appid)
);
if (retval) {
hav.host_id=0; // flag that it's missing
}
host_app_versions.push_back(hav);
host_app_versions_orig.push_back(hav);
}
log_messages.printf(MSG_DEBUG,
"[WU#%u %s] Found %d viable results\n",
wu.id, wu.name, (int)viable_results.size()
);
if (viable_results.size() >= (unsigned int)wu.min_quorum) {
log_messages.printf(MSG_DEBUG,
"[WU#%u %s] Enough for quorum, checking set.\n",
wu.id, wu.name
);
double dummy;
retval = check_set(viable_results, wu, canonicalid, dummy, retry);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[WU#%u %s] check_set() error: %s\n",
wu.id, wu.name, boincerror(retval)
);
return retval;
}
if (retry) transition_time = DELAYED;
// if we found a canonical instance, decide on credit
//
if (canonicalid) {
// always do the credit calculation, to update statistics,
// even if we're granting credit a different way
//
retval = assign_credit_set(
wu, viable_results, app, app_versions, host_app_versions,
max_granted_credit, credit
);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[WU#%u %s] assign_credit_set(): %s\n",
wu.id, wu.name, boincerror(retval)
);
transition_time = DELAYED;
goto leave;
}
if (credit_from_wu) {
retval = get_credit_from_wu(wu, viable_results, credit);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[WU#%u %s] get_credit_from_wu(): credit not specified in WU\n",
wu.id, wu.name
);
credit = 0;
}
} else if (credit_from_runtime) {
credit = 0;
for (i=0; i<viable_results.size(); i++) {
RESULT& result = viable_results[i];
if (result.id == canonicalid) {
DB_HOST host;
retval = host.lookup_id(result.hostid);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[WU#%u %s] host %d lookup failed\n",
wu.id, wu.name, result.hostid
);
break;
}
double runtime = result.elapsed_time;
if (runtime <=0 || runtime > max_runtime) {
runtime = max_runtime;
}
credit = result.flops_estimate * runtime * COBBLESTONE_SCALE;
log_messages.printf(MSG_NORMAL,
"[WU#%u][RESULT#%u] credit_from_runtime %.2f = %.0fs * %.2fGFLOPS\n",
wu.id, result.id,
credit, runtime, result.flops_estimate/1e9
);
break;
}
}
} else if (no_credit) {
credit = 0;
}
if (max_granted_credit && credit>max_granted_credit) {
credit = max_granted_credit;
}
}
// scan the viable results.
// update as needed,
// and count the # of results that are still viable
// (some may now have outcome VALIDATE_ERROR,
// or validate_state INVALID)
//
int n_viable_results = 0;
for (i=0; i<viable_results.size(); i++) {
RESULT& result = viable_results[i];
DB_HOST_APP_VERSION& hav = host_app_versions[i];
DB_HOST_APP_VERSION& hav_orig = host_app_versions_orig[i];
update_result = false;
bool update_host = false;
if (result.outcome != RESULT_OUTCOME_SUCCESS
|| result.validate_state == VALIDATE_STATE_INVALID
) {
transition_time = IMMEDIATE;
update_result = true;
} else {
n_viable_results++;
}
DB_HOST host;
HOST host_initial;
switch (result.validate_state) {
case VALIDATE_STATE_VALID:
case VALIDATE_STATE_INVALID:
retval = host.lookup_id(result.hostid);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%u] lookup of host %d: %s\n",
result.id, result.hostid, boincerror(retval)
);
continue;
}
host_initial = host;
}
switch (result.validate_state) {
case VALIDATE_STATE_VALID:
update_result = true;
update_host = true;
retval = is_valid(host, result, wu, host_app_versions[i]);
if (retval) {
log_messages.printf(MSG_DEBUG,
"[RESULT#%u %s] is_valid() failed: %s\n",
result.id, result.name, boincerror(retval)
);
}
if (!no_credit) {
result.granted_credit = credit;
grant_credit(host, result.sent_time, credit);
log_messages.printf(MSG_NORMAL,
"[RESULT#%u %s] Valid; granted %f credit [HOST#%d]\n",
result.id, result.name, result.granted_credit,
result.hostid
);
}
break;
case VALIDATE_STATE_INVALID:
update_result = true;
update_host = true;
log_messages.printf(MSG_NORMAL,
"[RESULT#%u %s] Invalid [HOST#%d]\n",
result.id, result.name, result.hostid
);
is_invalid(host_app_versions[i]);
break;
case VALIDATE_STATE_INIT:
log_messages.printf(MSG_NORMAL,
"[RESULT#%u %s] Inconclusive [HOST#%d]\n",
result.id, result.name, result.hostid
);
result.validate_state = VALIDATE_STATE_INCONCLUSIVE;
update_result = true;
break;
}
if (hav.host_id) {
log_messages.printf(MSG_NORMAL,
"[HOST#%d AV#%d] [outlier=%d] Updating HAV in db. pfc.n=%f->%f\n",
hav.host_id, hav.app_version_id, result.runtime_outlier, hav_orig.pfc.n,hav.pfc.n);
retval = hav.update_validator(hav_orig);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[HOST#%d AV%d] hav.update_validator() failed: %s\n",
hav.host_id, hav.app_version_id, boincerror(retval)
);
}
}
if (update_host) {
retval = host.update_diff_validator(host_initial);
}
if (update_result) {
retval = validator.update_result(result);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%u %s] result.update() failed: %s\n",
result.id, result.name, boincerror(retval)
);
}
}
}
if (canonicalid) {
// if we found a canonical result,
// trigger the assimilator, but do NOT trigger
// the transitioner - doing so creates a race condition
//
transition_time = NEVER;
log_messages.printf(MSG_DEBUG,
"[WU#%u %s] Found a canonical result: id=%d\n",
wu.id, wu.name, canonicalid
);
wu.canonical_resultid = canonicalid;
wu.canonical_credit = credit;
wu.assimilate_state = ASSIMILATE_READY;
// don't need to send any more results
//
for (i=0; i<items.size(); i++) {
RESULT& result = items[i].res;
if (result.server_state != RESULT_SERVER_STATE_UNSENT) {
continue;
}
result.server_state = RESULT_SERVER_STATE_OVER;
result.outcome = RESULT_OUTCOME_DIDNT_NEED;
retval = validator.update_result(result);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%u %s] result.update() failed: %s\n",
result.id, result.name, boincerror(retval)
);
}
}
} else {
// here if no consensus.
// check if #viable results is too large
//
if (n_viable_results > wu.max_success_results) {
wu.error_mask |= WU_ERROR_TOO_MANY_SUCCESS_RESULTS;
transition_time = IMMEDIATE;
}
// if #viable results >= target_nresults,
// we need more results, so bump target_nresults
// NOTE: n_viable_results should never be > target_nresults,
// but accommodate that if it should happen
//
if (n_viable_results >= wu.target_nresults) {
wu.target_nresults = n_viable_results+1;
transition_time = IMMEDIATE;
}
}
}
}
leave:
--log_messages;
switch (transition_time) {
case IMMEDIATE:
wu.transition_time = time(0);
break;
case DELAYED:
x = time(0) + 6*3600;
if (x < wu.transition_time) wu.transition_time = x;
break;
case NEVER:
wu.transition_time = INT_MAX;
break;
case NO_CHANGE:
break;
}
wu.need_validate = 0;
retval = validator.update_workunit(wu);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[WU#%u %s] update_workunit() failed: %s\n",
wu.id, wu.name, boincerror(retval)
);
return retval;
}
return 0;
}
// make one pass through the workunits with need_validate set.
// return true if there were any
//
bool do_validate_scan() {
DB_VALIDATOR_ITEM_SET validator;
std::vector<VALIDATOR_ITEM> items;
bool found=false;
int retval, i=0;
// loop over entries that need to be checked
//
while (1) {
retval = validator.enumerate(
app.id, SELECT_LIMIT, wu_id_modulus, wu_id_remainder, items
);
if (retval) {
if (retval != ERR_DB_NOT_FOUND) {
log_messages.printf(MSG_DEBUG,
"DB connection lost, exiting\n"
);
exit(0);
}
break;
}
retval = handle_wu(validator, items);
if (!retval) found = true;
if (++i == one_pass_N_WU) break;
}
return found;
}
int main_loop() {
int retval;
bool did_something;
char buf[256];
sprintf(buf, "where name='%s'", app_name);
while (1) {
check_stop_daemons();
// look up app within the loop,
// in case its min_avg_pfc has been changed by the feeder
//
retval = app.lookup(buf);
if (retval) {
log_messages.printf(MSG_CRITICAL, "can't find app %s\n", app_name);
exit(1);
}
did_something = do_validate_scan();
if (!did_something) {
write_modified_app_versions(app_versions);
if (one_pass) break;
#ifdef GCL_SIMULATOR
char nameforsim[64];
sprintf(nameforsim, "validator%i", app.id);
continue_simulation(nameforsim);
signal(SIGUSR2, simulator_signal_handler);
pause();
#else
daemon_sleep(sleep_interval);
#endif
}
}
return 0;
}
// For use by project-supplied routines check_set() and check_pair()
//
int debug_level=0;
int main(int argc, char** argv) {
int i, retval;
const char *usage =
"\nUsage: %s --app <app-name> [OPTIONS]\n"
"Start validator for application <app-name>\n\n"
"Optional arguments:\n"
" --one_pass_N_WU N Validate at most N WUs, then exit\n"
" --one_pass Make one pass through WU table, then exit\n"
" --mod n i Process only WUs with (id mod n) == i\n"
" --max_granted_credit X Grant no more than this amount of credit to a result\n"
" --update_credited_job Add record to credited_job table after granting credit\n"
" --credit_from_wu Credit is specified in WU XML\n"
" --credit_from_runtime X Grant credit based on runtime (max X seconds)and estimated FLOPS\n"
" --no_credit Don't grant credit\n"
" --sleep_interval n Set sleep-interval to n\n"
" -d n, --debug_level n Set log verbosity level, 1-4\n"
" -h | --help Show this\n"
" -v | --version Show version information\n";
if (argc > 1) {
if (is_arg(argv[1], "h") || is_arg(argv[1], "help")) {
printf (usage, argv[0] );
exit(0);
} else if (is_arg(argv[1], "v") || is_arg(argv[1], "version")) {
printf("%s\n", SVN_VERSION);
exit(0);
}
}
check_stop_daemons();
for (i=1; i<argc; i++) {
if (is_arg(argv[i], "one_pass_N_WU")) {
one_pass_N_WU = atoi(argv[++i]);
one_pass = true;
} else if (is_arg(argv[i], "sleep_interval")) {
sleep_interval = atoi(argv[++i]);
} else if (is_arg(argv[i], "one_pass")) {
one_pass = true;
} else if (is_arg(argv[i], "app")) {
safe_strcpy(app_name, argv[++i]);
} else if (is_arg(argv[i], "d") || is_arg(argv[i], "debug_level")) {
debug_level = atoi(argv[++i]);
log_messages.set_debug_level(debug_level);
if (debug_level == 4) g_print_queries = true;
} else if (is_arg(argv[i], "mod")) {
wu_id_modulus = atoi(argv[++i]);
wu_id_remainder = atoi(argv[++i]);
} else if (is_arg(argv[i], "max_granted_credit")) {
max_granted_credit = atof(argv[++i]);
} else if (is_arg(argv[i], "update_credited_job")) {
update_credited_job = true;
} else if (is_arg(argv[i], "credit_from_wu")) {
credit_from_wu = true;
} else if (is_arg(argv[i], "credit_from_runtime")) {
credit_from_runtime = true;
max_runtime = atof(argv[++i]);
} else if (is_arg(argv[i], "no_credit")) {
no_credit = true;
} else {
//log_messages.printf(MSG_CRITICAL, "unrecognized arg: %s\n", argv[i]);
}
}
g_argc = argc;
g_argv = argv;
if (app_name[0] == 0) {
log_messages.printf(MSG_CRITICAL,
"must use '--app' to specify an application\n"
);
printf (usage, argv[0] );
exit(1);
}
retval = config.parse_file();
if (retval) {
log_messages.printf(MSG_CRITICAL,
"Can't parse config.xml: %s\n", boincerror(retval)
);
exit(1);
}
retval = boinc_db.open(
config.db_name, config.db_host, config.db_user, config.db_passwd
);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"boinc_db.open failed: %s\n", boincerror(retval)
);
exit(1);
}
log_messages.printf(MSG_NORMAL,
"Starting validator, debug level %d\n", log_messages.debug_level
);
if (credit_from_runtime) {
log_messages.printf(MSG_NORMAL,
"using credit from runtime, max runtime: %f\n", max_runtime
);
}
if (wu_id_modulus) {
log_messages.printf(MSG_NORMAL,
"Modulus %d, remainder %d\n", wu_id_modulus, wu_id_remainder
);
}
install_stop_signal_handler();
main_loop();
}
const char *BOINC_RCSID_634dbda0b9 = "$Id$";
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