FWIW, since I don't have exactly the same outcome yet, but my stats are
Mac Pro 2.8Ghz 2 x Quad-Core Intel Xeon
Memory is 4Gb 667Mhz DDR2
L2 cache per processor (of 4 cores) 12Mb
Java version: Java HotSpot version 1.5.0.16
Run with java -server (javac optimization level of Eclipse is unknown
to me.)
Time for 1 million playouts: 42 secs.
Java version: 64-bit Java HotSpot version 1.6.0_07
Time for 1 million playouts: 36 secs.
Interestingly, Java 5 is faster for multiple processing, 12 secs. vs.
17 sec. for Java 6 running on 8 cores. But those numbers look way too
high anyway, I used to get more like a factor 6-7 out of 8 processors.
I spent some time optimizing the playouts, but I believe the UCT-tree
building is still very inefficient as it takes about a third of the
total time. I built it for clarity, reusabiility and scalability
rather than speed. Maybe if I improve the tree-building it will be
faster than crefgo on equal hardware. (That's just a wild guess of
course.)
Mark
On 22-okt-08, at 16:10, Don Dailey wrote:
I have some preliminary performance numbers for various programming
languages with reference bots, I now have reference bots in 3
languages.
I also used the same data structure, and pretty much the same
techniques
for each language. The Vala program is almost a direct port of the
java version (the language are VERY similar.)
My disclaimer: I am sure the performance numbers for any given
platform
could be easily improved, perhaps even with different compiler options
or simple changes to code. I am no expert in any of these languages.
Below is the data as I have it now.
- Don
platform: core 2 duo e6700
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz
stepping : 6
cpu MHz : 2667.000
cache size : 4096 KB
boardsize 9
komi 0.5
Starting position
PROGRAM SPEED TIME MOVE TOTAL NODES AVE
SCORE
------------ ----- -------- ---- ------------- ------------
crefgo 1.00 40.2 E5 111,040,853 0.523997
valago 1.38 55.70 E5 111,060,969 0.523488
jrefgo.jar 1.69 68.16 E5 111,037,354 0.524622
jrefgo 1.75 70.5 E5 111,048,045 0.523744
crefgo
---------------------------------------------------------------
gcc version 4.2.3
options: -O3 -march=native
valago
---------------------------------------------------------------
Vala version 0.3.5
compile: valac --Xcc=-O3 --disable-assert --disable-checking
--disable-non-null -o vgo valaGo.vala
jrefgo.jar
----------------------------------------------------------------
version: ibm java 1.6.0
compile: javac -O
jrefgo
----------------------------------------------------------------
gcj version 4.2.3 (gcc native code compiler)
compile: gcj -O3
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