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Rev Age Author Path Log message Diff
1222 3148d 14h werner / public SVN  
1221 3148d 14h werner /branches/ public SVN  
1220 3148d 14h werner /branches/version1.0/ Version 1.0  
1218 3148d 16h werner / clean up repository - make 1.0 trunk again!  
1217 3148d 16h werner / clean up repository - make 1.0 trunk again!  
1104 3436d 21h werner /branches/iland_regen/ Branch dedicated to playing around with establishment/regeneration.
Goals are:
(i) speed up
(ii) introduction of new features for Yellowstone
 
802 4287d 22h werner /branches/port_qt5_64bit/ merge from trunk up to revision 801  
779 4420d 16h werner /branches/port_qt5_64bit/  
707 4951d 18h werner /trunk/src/ rework of the random numbers in iland.
Now, many (200000) random numbers are precalculated using a given algorithm (there are three or four choices), then the drandom() etc functions read from this array. After some rotations, the numbers are renewed. The point is: this is now reentrant, so the per-thread storage of MTRand objects is obsolete.
 
706 4952d 11h werner /trunk/src/ some performance tests with random number generators. Results so far are not too indicative.  
705 4952d 13h werner /trunk/src/ series of performance tests / modifications.
Using "valgrind" on the linux virtual machine, some performance
measurements were made.
Some candidates for optimization were tested. (1) the applyLIP()
function (about 30% of total run time in runYear()): here several
inlining options were tested; testing the value of the stamp before
using it (in order to omit the other steps) prooved to be slower than
unsing all stamp values.
(2) the random number generator; here the random number generation is
about 5% of the total run time; the commit contains two/three other
variants.
 
671 5003d 17h werner /trunk/src/ Necessary changes for GPL licence (i.e. headers in all source files)  
639 5164d 14h werner / move current content to the "trunk"  
615 5223d 18h werner /src/ removed windows specific _isnan() calls  
443 5482d 21h werner /src/ problems with multihtreading and the random generator. Crashes revealed that the MersenneTwister class is not multithreadable; The solution now is to have for each Thread in the thread pool one random number generator. This removes the crashes, but makes changes to the code necessary.  
431 5510d 10h werner /src/ included the logLevel-Functions at several locations in the source code.
added a option to only display debug messages in the DebugTimer destructor when elapsed time is longer than one millisecond.
 
349 5604d 18h werner /src/ tested behavior of irandom(from, to). It is clear now, that results are [from, to], i.e. the upper value is also returned. Be careful when using for querying an index for a list/vector.  
289 5730d 06h werner /src/ random - things: added the Picus random-helper-classes (RandomIndex, CustomRandomPDF, ...).
added a 3rd party Mersenne-Twister-Random-Generator (added a 3rdparty) directory.
 
287 5731d 05h werner /src/ Tree initialization (random variant). works almost...  
285 5733d 01h werner /src/core/ loading of the landscape. added "areaMask.imageFile" to "world" in xml file. This loads a image mask that establishes area that are inside and outside the project area respectively.  

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