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World Community Grid Forums
Category: Completed Research
Forum: Discovering Dengue Drugs - Together - Phase 2 Forum
Thread: When is a task not a task? |
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Thread Status: Active Total posts in this thread: 10
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cw64
Advanced Cruncher Joined: Oct 6, 2007 Post Count: 120 Status: Offline Project Badges: 
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19/01/2011 10:23:24 World Community Grid Scheduler request completed: got 2 new tasks This shouldn't be a cause for concern, except that it was not followed by "started downloading...". I have noticed this before so I quickly look to the tranfers tab, and it is empty. I check the task list and 2 new tasks were added at this time. So how am I getting tasks without downloading them? o.0  [Edit 2 times, last edit by cw64 at Jan 19, 2011 10:32:41 AM] |
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges: 
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You could have posted a few more message log lines, especially the next lines, oh and Boinc version. I take it the project is DDDT2.
----------------------------------------For example, 18/01/2011 10:59:50 World Community Grid Sending scheduler request: To fetch work. 18/01/2011 10:59:50 World Community Grid Requesting new tasks for CPU 18/01/2011 10:59:52 World Community Grid Scheduler request completed: got 1 new tasks 18/01/2011 10:59:54 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_a028.prm.gzb 18/01/2011 10:59:54 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_a028.rtf.gzb 18/01/2011 10:59:56 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_a028.prm.gzb 18/01/2011 10:59:56 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_solv_a028.psf.gzb 18/01/2011 10:59:57 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_a028.rtf.gzb 18/01/2011 10:59:57 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_solv_a028.psf.gzb 18/01/2011 10:59:57 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_solv_a028_eq.crd.gzb 18/01/2011 10:59:57 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_const_dihe.str.gzb 18/01/2011 10:59:58 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_solv_a028_eq.crd.gzb 18/01/2011 10:59:58 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_const_dihe.str.gzb 18/01/2011 10:59:58 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_const_para_ts02_a028_equ.str.gzb 18/01/2011 10:59:58 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_solv_chg_b2.prt.gzb 18/01/2011 10:59:59 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_const_para_ts02_a028_equ.str.gzb 18/01/2011 10:59:59 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_solv_chg_b2.prt.gzb 18/01/2011 10:59:59 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_par_all22_prot_cmap.inp.gzb 18/01/2011 10:59:59 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_top_all22_prot_cmap.inp.gzb 18/01/2011 11:00:01 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_par_all22_prot_cmap.inp.gzb 18/01/2011 11:00:01 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_top_all22_prot_cmap.inp.gzb 18/01/2011 11:00:01 World Community Grid Started download of ts02_a_g03_a021_to_a030_typeC_solv_pert.inp.gzb 18/01/2011 11:00:02 World Community Grid Finished download of ts02_a_g03_a021_to_a030_typeC_solv_pert.inp.gzb 18/01/2011 11:00:02 World Community Grid Starting ts02_a028_sqb002_0 18/01/2011 11:00:02 World Community Grid Starting task ts02_a028_sqb002_0 using dddt2 version 617 [Edit 1 times, last edit by skgiven at Jan 19, 2011 10:41:24 AM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
19/01/2011 10:23:24 World Community Grid Scheduler request completed: got 2 new tasks This shouldn't be a cause for concern, except that it was not followed by "started downloading...". I have noticed this before so I quickly look to the tranfers tab, and it is empty. I check the task list and 2 new tasks were added at this time. So how am I getting tasks without downloading them? o.0 By observation, same as with several other sciences, no download is needed if sequential work requests follow each other quickly. A switch is flipped to add another seed from a table of some kind that must be coming along for a task group. So far I've seen 5 tasks maximum depending on one single 16 MB main task file. Could be more but that's what I've seen on my quad. Of course this hugely reduces bandwidth use... goodoos to the techs to maximize efficiency once again. edit: requests in plural [Edit 2 times, last edit by Former Member at Jan 19, 2011 11:01:55 AM] |
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cw64
Advanced Cruncher Joined: Oct 6, 2007 Post Count: 120 Status: Offline Project Badges:
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19/01/2011 10:23:24 World Community Grid Scheduler request completed: got 2 new tasks This shouldn't be a cause for concern, except that it was not followed by "started downloading...". I have noticed this before so I quickly look to the tranfers tab, and it is empty. I check the task list and 2 new tasks were added at this time. So how am I getting tasks without downloading them? o.0 By observation, same as with several other sciences, no download is needed if sequential work requests follow each other quickly. A switch is flipped to add another seed from a table of some kind that must be coming along for a task group. So far I've seen 5 tasks maximum depending on one single 16 MB main task file. Could be more but that's what I've seen on my quad. Of course this hugely reduces bandwidth use... goodoos to the techs to maximize efficiency once again. edit: requests in plural I suspected something along those lines. However it raises a further question. Why don't I get all the tasks for a data set first time every time? Wouldn't it be more bandwidth efficient to send all tasks per data set (or more than one or two at a time at least) to clients requesting work? [Edit 2 times, last edit by cw64 at Jan 19, 2011 6:06:33 PM] |
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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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What you may be noticing is from Computing for Clean Water. There are two sticky files with each target. Once you download those for the target (ex. target03) then all that is downloaded is the xml for the subsequent workunits. The xml is sent in the scheduler request.
Thanks, -Uplinger |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
The low weighting in the distributor queue probably prevents that. It's a balance between efficiency and spreading the wealth... give many a chance to snag a few when they happen to be in the hopper.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
So how am I getting tasks without downloading them? The system has a fallback option where, if you cannot get a WU downloaded directly to you, it gets your email address from the WCG registration and emails the zip file to you then unpacks it into the directory assigned. It is a bit slower than the download, but it expands the distribution options.  |
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cw64
Advanced Cruncher Joined: Oct 6, 2007 Post Count: 120 Status: Offline Project Badges:
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What you may be noticing is from Computing for Clean Water. There are two sticky files with each target. Once you download those for the target (ex. target03) then all that is downloaded is the xml for the subsequent workunits. The xml is sent in the scheduler request. Thanks, -Uplinger Nope, definitely DDDT2 |
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cw64
Advanced Cruncher Joined: Oct 6, 2007 Post Count: 120 Status: Offline Project Badges:
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The low weighting in the distributor queue probably prevents that. It's a balance between efficiency and spreading the wealth... give many a chance to snag a few when they happen to be in the hopper. It's the bandwidth that costs right? If (big if) a data set can run 5 tasks and I only get one along with everybody else. That's 5 times the cost of distributing the data when it could have been sent just once. [Edit 1 times, last edit by cw64 at Jan 19, 2011 8:03:37 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Sliding off topic, cost is one part of the equation, and doubt this one is outweighing what I outlined as to why that is. Maybe if DDDT2 goes to full production it is changed but have as yet no indication that it will ever be taken out of active-intermittent state.
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