Just for fun, how long does it normally take to generate through 5 pieces? and then 6 pieces? If it is reasonable, I can give it a whirl just to see how this thing works, if your generator is available?syzygy wrote:Indeed...bob wrote:Would be one hell of a machine to generate endgame tables..
5 pieces take about an hour on my machine (i7-3930K at 4.2Ghz, 6 cores / 12 threads). 6 pieces around 100x as long.bob wrote:Just for fun, how long does it normally take to generate through 5 pieces? and then 6 pieces? If it is reasonable, I can give it a whirl just to see how this thing works, if your generator is available?syzygy wrote:Indeed...bob wrote:Would be one hell of a machine to generate endgame tables..
Just an aside.. its awesome that we now live in a world where someone can generate 6-piece tablebases for chess in less than a week on a single machine costing only a few thousand dollars. (At least using a sufficiently-clever generator, which yours is)syzygy wrote:5 pieces take about an hour on my machine (i7-3930K at 4.2Ghz, 6 cores / 12 threads). 6 pieces around 100x as long.
It is about 80% as fast as the 2660 20 core box I have been using...hammerklavier wrote:Benchmark! Please Robert!
This is a bit newer.lauriet wrote:Hi bob,
I have an old commadore 64 you can also
20 cores, 1 terabyte of DRAM. Got anything close? OK, if you are interested, you could try this version:syzygy wrote:5 pieces take about an hour on my machine (i7-3930K at 4.2Ghz, 6 cores / 12 threads). 6 pieces around 100x as long.bob wrote:Just for fun, how long does it normally take to generate through 5 pieces? and then 6 pieces? If it is reasonable, I can give it a whirl just to see how this thing works, if your generator is available?syzygy wrote:Indeed...bob wrote:Would be one hell of a machine to generate endgame tables..
My generator is available (see signature), but it expects a little endian machine and it uses a bit of x86 inline assembly for atomically doing updates to the tablebase arrays.
The inline assembly can now be replaced with C11 atomics (if you have a relatively recent gcc). That should not take me much time.
The endianness might be a non-issue, but that is not clear to me. What does the machine / the OS expect? But it can in any case be fixed and I should probably do that anyway at some point.
Code: Select all
$ md5sum *.rtbw?
21070fc6c230cce12f6f6b615c9f1eb4 KQQvK.rtbw
fccaac715e6b2d5540db71ebe6284b49 KQQvK.rtbz
f06221548404795b6b33469e247b4560 KQvK.rtbw
ac866466e16eb19a4f8c796f8e1abd2b KQvK.rtbzCode: Select all
$ ./run.pl --generate --threads 160 --min 3 --max 5
.