Another thing - what do you get if you set up the resulting positions after the moves and then do a 4-ply eval.
Christian. On Tue, Sep 1, 2009 at 12:35 AM, Christian Anthon<[email protected]> wrote: > On my single core athlon the results are perfectly normal. I assume > that we are seeing another compiler bug. The one we found recently > couldn't be reproduced on this machine either. > > Linux anthon-desktop 2.6.29.6-217.2.16.fc11.i686.PAE #1 SMP Mon Aug 24 > 17:16:21 EDT 2009 i686 athlon i386 GNU/Linux > > gcc (GCC) 4.4.1 20090725 (Red Hat 4.4.1-2) > > Multiple threads supported. > SSE/SSE2 supported. > > > 1. Cubeful 4-ply 10/6 5/2 Eq.: +0.558 > 0.810 0.002 0.000 - 0.190 0.000 0.000 > 4-ply cubeful prune > 2. Cubeful 4-ply 10/3 Eq.: +0.555 ( -0.003) > 0.809 0.002 0.000 - 0.191 0.000 0.000 > 4-ply cubeful prune > 3. Cubeful 4-ply 10/6 4/1 Eq.: +0.551 ( -0.007) > 0.807 0.002 0.000 - 0.193 0.000 0.000 > 4-ply cubeful prune > 4. Cubeful 4-ply 9/6 9/5 Eq.: +0.542 ( -0.017) > 0.801 0.009 0.000 - 0.199 0.002 0.000 > 4-ply cubeful prune > > > 1. Cubeful 4-ply 10/6 5/2 Eq.: +0.560 > 0.810 0.002 0.000 - 0.190 0.000 0.000 > 4-ply cubeful > 2. Cubeful 4-ply 10/3 Eq.: +0.558 ( -0.002) > 0.810 0.002 0.000 - 0.190 0.000 0.000 > 4-ply cubeful > 3. Cubeful 4-ply 10/6 4/1 Eq.: +0.552 ( -0.008) > 0.807 0.002 0.000 - 0.193 0.000 0.000 > 4-ply cubeful > 4. Cubeful 4-ply 9/6 9/5 Eq.: +0.540 ( -0.019) > 0.800 0.009 0.000 - 0.200 0.002 0.000 > 4-ply cubeful > > > 2009/8/31 Michael Petch <[email protected]>: >> >> On 31/08/09 3:33 PM, "Øystein Johansen" <[email protected]> wrote: >> >> * /Should/ means that it should give the same answer. I have tested a lot of >> inputs and got the desired output, however..... there can be surprises. >> >> Unless there is a bug or there is a precision change there is a difference >> between the outputs pre-patch and post patch versions. I am not the only one >> to have seen it. Now what I haven’t ruled out is that an unintended side >> effect of something else (optimizations, sse2 compiler bug etc). >> >> I am running some eval tests today., When finished I will take out the >> latest CVS, and make 2 builds. No Multithreading with SSE only, and No >> Multithreading with SSE2 only (both builds with no compiler optimizations so >> no –O2 or -O3), I have a few thousand matches and I’ll analyze a random >> subset of the files on both versions (At 0 ply) and see if I can find any >> differences. >> >> _______________________________________________ >> Bug-gnubg mailing list >> [email protected] >> http://lists.gnu.org/mailman/listinfo/bug-gnubg >> >> > _______________________________________________ Bug-gnubg mailing list [email protected] http://lists.gnu.org/mailman/listinfo/bug-gnubg
