http://sites.google.com/site/gaviotache ... e/releases
I do not think that the interface will change anymore after this release. So the next steps will be optimization, code cleanup, and wait if there is any bug. After that, I will hopefully rename it v1.0
Main changes in v0.2
I included functions that only probes Win-Draw-Loss info from the TBs. These functions can be used when the distance to mate is not needed, which the most common case during search. I implemented a second cache that stores the WDL info. Basically, these are bit-bases built on the fly and overall the performance should be better than plain TBs. This scheme saves a LOT of space and multiplies the efficiency of the cache 8x.
In a previous intermediate release (v0.1.6.1), I provided just the interface but now the whole thing is fully functional. These WDL functions come in two flavors, soft and hard, like the regular functions (soft probes only the cache, and never the HD). If you already implemented this interface, you do not have to change anything, and you will notice a boost in performance by upgrading the APIS.
The only change is that tbcache_init() has a new parameter (0-128) that tells how much the memory cache should be split between WDL and DTM info. Before, you had tbcache_init(cache_size), now (from tbprobe.c) you have:
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/* | initialize tb cache. 96 is the fraction, over 128, that will be | dedicated to wdl information. In other words, 3/4 of the cache | will be dedicated to win-draw-loss info, and 1/4 dedicated to | distance to mate information. */ tbcache_init(cache_size, 96);
From 0.1.6.1 to 0.2
- - Change char **paths to const char **paths
- All warnings in the intel and Microsoft compilers have been silenced
- malloc()'s have been casted to avoid error messages if the APIS are compiled in C++
- Modify verbose output of tb_init
- Set new STATS
- - I included tbcache_flush(). Sometimes you want to erase the tbcache to have reproducibility (epd tests etc).
- I cleaned up and remove a lot of commented code that was not needed.
Some new were included, until I decide they will not be needed anymore.
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WDL CACHE STATS easy hits: 35760 hard probes: 6903 soft probes: 79900 size: 50331648 occupancy: 6.2 % DTM CACHE STATS easy hits: 48425 hard probes: 8040 soft probes: 200502 size: 16777216 occupancy: 100.0 % GENERAL GTB PROBE STATS Total hits: 86239 memory hits: 84185 drive hits: 2054 drive miss: 0 bytes read: 7481741 files opened: 36 mem. efficiency: 97.6 %