[Bug-gnubg] Re: Gnubg exes. - Seems Good

[Michael Petch]

On 21/08/09 3:47 AM, "Massimiliano Maini" <address@hidden> wrote:

> Michael Petch <address@hidden> wrote on 20/08/2009 19:57:40:
> 
>> 
>> Okay, this release compares to other outputs, and does seem to fix
>> some fringe plays (Like Keene¹s). It also was stable, I had no
>> crashes doing some long analysis and a few rollout.
> 
> I did some testing on my side too, to check results across the
> different compiling options.
> 
> For each of the 24 no-gui exes I have (wmt/gmt/nomt X allsse2/allsse/
> sse2/sse/nosse X -O2/-O3 = 30, but the allsse2/allsse -O3 combos crash,
> even in CLI, hence I have ony 24 working exes) I run a 2/2ply analysis
> of a 7pt match and diff the resulting sgf files.
> 
> The only "significative" numerical differences are between sse2/allsse2
> and the others, but this is probably due to the new sigmoid code (faster
> but a bit less accurate/different, if I'm not wrong).
> In terms of meaningful output (total, error rate etc), the differences
> I've seen are of 0.002% MWC (in total error) between nosse and sse,
> a bit larger in case of sse2 (due to the sigmoid probably), 0.2% MWC.
> 
> I have the output in case anyone is interested in having a look.
> 

I have seen in the past the tiny discrepancies between NoSSE and SSE, so in
all likelyhood the SSE2 code would probably be a bit different. Jon would be
able to confirm/deny this finding.

I would not rely on using allSSE2 and allSSE for release builds based on the
fact they appear to give unusual problems (crashes etc).

>> The question would be, should we wait for Christian to fix the bug
>> you discovered with bad end of game cube/passes(and clear analysis)
>> and then rebuild a new release?
> 
> I would say no, anyway it takes me a few clicks to build a release.
>

I agree, the highlight bug appears to be cosmetic in nature and doesn't
affect error rates from what I observed. I say we live with it for now.
 
> Point is, how do we distribute it, since issues gnubg.org are not
> yet solved (I think)..
> 
>

Christian and I have access to webservers independent of gnubg.org. I was
intending to put a copy at www2.capp-sysware.con/downloads where I put some
OS/X builds in the past. This would only be temporary until Gnubg.org
resumes normal operation.

I have cleared out the ftp folder you sent files to. If you are confident
you have the files right, can you upload all the files you believe we should
make available, and then I will move them to my webserver and post links on
the mailing list (And BGO).

Thanks,
Michael