186 Work Units going back almost a month, not yet validated

Questions and Answers : Web site : 186 Work Units going back almost a month, not yet validated

Author	Message
polliard Send message Joined: 21 Mar 04 Posts: 2 Credit: 427,519 RAC: 0	Message 995654 - Posted: 11 May 2010, 22:54:30 UTC
	Is there something I need to do? The validation seems to be almost a month behind. Not sure what Im not doing right. ____________
	ID: 995654 ·

Ageless Send message Joined: 9 Jun 99 Posts: 11633 Credit: 1,988,313 RAC: 4,224	Message 995659 - Posted: 11 May 2010, 23:17:52 UTC - in response to Message 995654.
	On most projects, at least two tasks are sent out to different hosts. Those hosts will usually have different CPU makes (in some cases even GPUs) and different cache lengths (the amount of work one wants to have in store to cover for project outages). The project doesn't take all data back and puts it in a database, it'll want to verify that the data you sent back isn't just a chapter of your favorite sci-fi book. And thus, they validate it against another computer. Only when both results from both computers match each-other, is a copy put in the science database, credits granted etc. If they do not match, a third copy of this task is sent out and done by another computer. When that one sends its result back, that gets checked against the two that were available before. The result matching the third one gets credit, the one not matching does not get credit. Since deadlines differ per project, it can take quite a while for tasks to get credit, especially if it has to wait for someone else's deadline to pass before it's sent out again and then returned. We're talking months here, in some cases even half a year. ____________ Jord - BOINC FAQ Service - BOINC User Wiki Real is just a matter of perception.
	ID: 995659 ·

polliard Send message Joined: 21 Mar 04 Posts: 2 Credit: 427,519 RAC: 0	Message 995678 - Posted: 12 May 2010, 0:00:02 UTC - in response to Message 995659.
	Thanks for the info, I was just used to very rapid (a week or two at most) credit assignment. Thanks Thomas ____________
	ID: 995678 ·

John McLeod VII Volunteer developer Volunteer tester Send message Joined: 15 Jul 99 Posts: 22343 Credit: 437,061 RAC: 263	Message 995708 - Posted: 12 May 2010, 3:09:39 UTC - in response to Message 995678.
	Thanks for the info, I was just used to very rapid (a week or two at most) credit assignment. Thanks Thomas Sometimes you get lucky, sometimes you don't. There have been cases of a task that waits a year for validation. Most of the time it is less than a fortnight. About half the tasks are the second returned for a WU and are valid, and are validated instantly. Note that about is because of late work, errors, etc. ____________ BOINC WIKI
	ID: 995708 ·

Hoogendoorn Send message Joined: 22 May 99 Posts: 1 Credit: 601,720 RAC: 155	Message 996244 - Posted: 14 May 2010, 20:21:33 UTC
	Since about 12 May I have been downloading successfully. But uploading is not working. Two files hanging fire. 09mr07ae.18910.17659.11.10.248_2_0 and 21mr07ah.8150.18886.11.10.57_0_0 Solution? Or just wait for it to be resolved. RAY ____________
	ID: 996244 ·

BilBg Send message Joined: 27 May 07 Posts: 2019 Credit: 3,006,216 RAC: 6,039	Message 996269 - Posted: 14 May 2010, 22:40:26 UTC - in response to Message 996244. Last modified: 14 May 2010, 22:41:42 UTC
	. Congratulations for your first post in 11 years Read: Uploads failing?? http://setiathome.berkeley.edu/forum_thread.php?id=59985 Panic Mode On Server problems http://setiathome.berkeley.edu/forum_thread.php?id=59938&nowrap=true#996076 . ____________ - ALF - "Find out what you don't do well ..... then don't do it!" :)
	ID: 996269 ·

Questions and Answers : Web site : 186 Work Units going back almost a month, not yet validated