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Re: [Bug-gnubg] profiler output (was: For Mac OS X users)

From: Joseph Heled
Subject: Re: [Bug-gnubg] profiler output (was: For Mac OS X users)
Date: Sun, 13 Apr 2003 12:56:40 +1200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2) Gecko/20021202

Seeing this, I made an attempt to repair the incremental NN evaluation. Please let me know if you encounter problems. Will be interesting to see a profiler run on the new code.


Jim Segrave wrote:
On Thu 10 Apr 2003 (17:06 +0200), Jim Segrave wrote:

On Wed 09 Apr 2003 (14:02 +0000), Joern Thyssen wrote:

On Wed, Apr 09, 2003 at 03:32:45PM +0200, Olivier Baur wrote

Le mercredi, 9 avr 2003, à 10:09 Europe/Paris, Øystein O Johansen a écrit :

How is the speed? How many static evaluations can you get each sec?
(Analyse->Evaluation Speed->Calibrate)
I get about 17000 on my 2 GHz Intel XEON, and about 23000 on my 2.53 GHz P4


On my PowerBook G4 768 MHz (no L3 cache :-)), I get about 9000 static evals/sec. Quite poor compared to the numbers you give. I'm waiting for someone to test it on a desktop G4 :-)

I get 11k evals/sec on a 1GHz laptop.
I'm not very familiar with the G4 architecture, so I don't know what a
768MHz roughly corresponds to in Intel MHz.

Jim once did some profiling. I can't remember how much time is spend in
NeuralNetEvaluate versus CalculateInputs?!

I'll try to set up a profiled version and get statistics on a current
one this weekend.

OK - attached is a profiler output of gnubg analyzing a 7 game match
of about 370 moves (the same one I profiled before). The analysis is a
2 ply with very broad move filters. Compiled under FreeBSD with gcc
3.2, running on a Dell L400 laptop

CPU: Pentium III/Pentium III Xeon/Celeron (696.97-MHz 686-class CPU)

which gives about 7700 evals/sec.

gnubg source is from cvs 12 April.


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