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Animals skip timesteps #43

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
In a run testing other things I found that many animals are skipping time 
steps. This means that there are jumps in time in the text output and the 
logs seem to skip over certain animals at certain times (based on 
animal.log). I have attached one example of the text output as well as the 
xml (using revision 100).

Original issue reported on code.google.com by bpa...@purdue.edu on 12 Oct 2009 at 7:06

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GoogleCodeExporter commented 9 years ago 
Here is a run with the same issue. "time_mulitperiods.xml".

I noticed that skipped steps correspond to the previous animal forming a home 
range. 
For example, Female 3 skips a step at 6am on 10/16/2009, just after Female 2 
forms a 
home range at 6am on 10/16/2009. The same is true for animals 1,40,19,61, and 
58. (I 
do not see the skipped step issue when the previous animal does not for a home 
range, supporting the idea that home range formation for animal X causes the 
skip in 
animal X+1.)

Original comment by nmcc...@purdue.edu on 16 Oct 2009 at 1:08

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GoogleCodeExporter commented 9 years ago 
I think Nick is on to something here. I went back and checked my runs with 
skipping 
timesteps and I am seeing the same thing. The pattern even fits for animals 
that 
skip multiple timesteps in a row. So, in my run, animal #30's text output skips 
from 
2pm to 6pm. At 3pm animal #29 set up a home range which caused #30 to skip 3pm. 
At 
4pm animal #28 (the animal just previous to #30 now that #29 is a resident) 
settled 
so #30 skipped 4pm. Finally, animal #27 (the new one before #30) settled at 5pm 
so 
#30 skipped that timestep as well.

Original comment by bpa...@purdue.edu on 16 Oct 2009 at 1:27

GoogleCodeExporter commented 9 years ago 
Reran above test with rollback version (revision 104B, data.zip on FTP) and I 
didn't 
observe any animals that skipped timesteps.

Original comment by bpa...@purdue.edu on 21 Oct 2009 at 7:24