There was a bug in the API that caused apps that use critical sections
(like most GPU apps)
to sometimes not exit when the client exits or crashes.
I checked in a fix.
BTW, for apps that handle status events themselves,
the flag indicating the client has died is status.no_heartbeat.
-- David
On 26-Oct-2014 11:30 AM, Raistmer the Sorcerer wrote:
If BOINC client stopped unexpectedly (crashed or killed via task manager for
example) CPU apps exit after some time. But SETI OpenCL apps continue to run to
completion.
Such behavior can and (was demonstrated) will result in subsequent result computation
error with some BOINC message like "result file too long" or smth alike.
OpenCL apps working in BOINC's "critical section" and poll flags periodically
to see if exit required.
Currently I use next poll function to check exit condition:
inline void ExitCheck(){
check_repeat:
if (boinc_status.quit_request || boinc_status.abort_request || !canRun) {
/* fprintf(stderr,"DEBUG: polled for exit/suspend request: exit needed. Flags
are: boinc_status.quit_request=%d, \
boinc_status.abort_request=%d, canRun=%d\n",
boinc_status.quit_request,boinc_status.abort_request,canRun);*/
DoSyncExit();
}else if(boinc_status.suspended){
Sleep(100); //R:await in sleep 100ms
/* fprintf(stderr,"DEBUG: polled for exit/suspend request: sleep needed. Flags
are: boinc_status.quit_request=%d, \
boinc_status.abort_request=%d, canRun=%d\n",
boinc_status.quit_request,boinc_status.abort_request,canRun);*/
goto check_repeat;//R: check again if exit required or sleep continues
}else{
/* fprintf(stderr,"DEBUG: polled for exit/suspend request: exit NOT needed.
Flags are: boinc_status.quit_request=%d, \
boinc_status.abort_request=%d, canRun=%d\n",
boinc_status.quit_request,boinc_status.abort_request,canRun);*/
}
} What another flags should be checked if any to prevent orphaned state for GPU apps?
Does BOINC API have measures to properly end task running in "critical section"
in case of BOINC client crash?
wbr
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