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World Community Grid Forums
Category: Completed Research
Forum: Discovering Dengue Drugs - Together - Phase 2 Forum
Thread: Wohoo! Got my first DDDT Phase 2 WU |
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Thread Status: Active Total posts in this thread: 27
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Ingleside
Veteran Cruncher Norway Joined: Nov 19, 2005 Post Count: 974 Status: Offline Project Badges: 
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Maybe knreed would be able to filter slow machines out of A-type distribution (e.g. based on their benchmark) but I don't think that such a feature has been implemented currently. In the BOINC server-code there is an option for this, called "hard_app". While normally any computer without currently any work in a project can get assigned a task, even if has no hope of finishing it by the deadline, the "hard_app" will only be sent to computers that can finish it by the deadline. Also, when checking if can finish by deadline, the estimated run-time is automatically increased by 30%, so for an 8-day-deadline-task the max estimated run-time is 6.15 days for a "hard_app". When building the scheduling-server, it would be easy for WCG to example change this to add 100% if so desires, so the cut-off is 4 days instead. Now, if WCG is running resent-enough server-code to use this functionality is another matter, the "hard_app"-functionality was added in July 2008 for the benefit of Astropulse, so it's possible WCG needs to upgrade 1st...  "I make so many mistakes. But then just think of all the mistakes I don't make, although I might." |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
To answer your forum side speculations, though assuming you have long seen this
----------------------------------------21/03/2010 16:57:28 World Community Grid [sched_op_debug] Server version 601 so yes, WCG has a need to upgrade, and is incredibly aware of this and working on this! Et al, the device criteria were set for A type (and B type) to same as repair jobs: known to return results under 2 days on a regular basis and an error rate of <0.2%. There's no reason to get discriminatory because these jobs actually can run 100hours+. In WCGrid spirit we have the widest possible range of volunteers be able to participate. Pretty much any device with enough memory can meet the 2 days / 0.2% error rate criterion (but each device must have a known history first, so new devices will have to proof themselves first). edit: address of last para.
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 2 times, last edit by Sekerob at Mar 22, 2010 8:27:35 AM] |
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Ingleside
Veteran Cruncher Norway Joined: Nov 19, 2005 Post Count: 974 Status: Offline Project Badges:
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To answer your forum side speculations, though assuming you have long seen this 21/03/2010 16:57:28 World Community Grid [sched_op_debug] Server version 601 so yes, WCG has a need to upgrade, and is incredibly aware of this and working on this! The problem with the version-number reported by the server is, it's not a well-defined version like the client-versioning, since server-side the same number can be used for many months. Also, while client-side is nicely "tagged" in the source, I've not seen any similar "tag" for the server-side... So, while 601 definitely is old, exactly how old I've no idea on. Also, even WCG is listed as 601, it does contain more resent code, like the GPU-deferral-code. This goes for the whole of the server-code, individual parts can often be upgraded independently, without needing to upgrade everything. The device criteria were set for A type (and B type) to same as repair jobs: known to return results under 2 days on a regular basis and an error rate of <0.2%. No reason to get discriminatory because these jobs actually can run 100hours+. In WCGrid spirit have the widest possible range of volunteers be able to participate. Pretty much any device with enough memory can meet the 2 days / 0.2% error rate criterion. An old P3 can have the neccessary memory to get A-type of work, and can definitely be "reliable" by having been running a bunch of 7-hour Rice-wu's. If this P3 has any hope of meeting the 8-day deadline of A-work is on the other hand much more doubtful, so allowing it to download any A-work would not be a good option, since whatever time the P3 uses on this task is most likely wasted, and it will just slow-down how fast A-tasks is finished, and fast turnaround-time on A-tasks was the whole point of sending only to "reliable" in the 1st. place. BTW, as the table shows, https://secure.worldcommunitygrid.org/forums/...ad,28648_offset,40#270922 roughly 67% of computers isn't reliable, so won't get any A-tasks. All computers can on the other hand get B and C-type of work, and since wast majority of work is C-type, not being eligible for A-type shouldn't really be a big problem. "I make so many mistakes. But then just think of all the mistakes I don't make, although I might." |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Also, even WCG is listed as 601, it does contain more resent code, like the GPU-deferral-code. This goes for the whole of the server-code, individual parts can often be upgraded independently, without needing to upgrade everything. Finally you got it. As I mentioned before from a note by knreed, what we have at WCG is a highly customized server software set [features we can guess but don't authoritatively know]. Till the official Berkeley version has been merged in [whatever that is], what WCG has to contribute back is as I understand not taken in for the other grids to benefit from. Note the edit to my post before your reply was posted... typing faster... what is and what is not a good idea, think the WCG techs are best placed to judge that.
WCG
Please help to make the Forums an enjoyable experience for All! |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
... the point being whilst 67% is not rated as reliable, it can be gotten for pretty much any device. 1), run it without errors, 2), return results with 48 hours from receipt on a regular basis.
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WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 1 times, last edit by Sekerob at Mar 22, 2010 6:41:26 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Is it normal at this stage for DDDT2 to get a message saying no WUs are available? I am getting tasks for other projects including rice, but nothing for DDDT2.
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uplinger
Former World Community Grid Tech Joined: May 23, 2005 Post Count: 3952 Status: Offline Project Badges: 
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dkt, yes
-Uplinger |
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