BIG NEWS! The 7 man syzygy tablebase files are complete.

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Harvey Williamson, bob

Forum rules
This textbox is used to restore diagrams posted with the [d] tag before the upgrade.
Dann Corbit
Posts: 9849
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by Dann Corbit » Mon Aug 20, 2018 8:18 pm

See:
http://talkchess.com/forum3/viewtopic.p ... &start=472

An incredible effort, with massive thanks to Ronald de Man for the tablebase code and to Bojun Guo for performing the calculations on his titanic machine for five straight months.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Leo
Posts: 791
Joined: Fri Sep 16, 2016 4:55 pm
Location: USA/Minnesota
Full name: Leo

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by Leo » Mon Aug 20, 2018 9:21 pm

Very impressive. Thanks for the effort. BTY, what is his titanic machine?
BrainFish-2 190310 bmi2 Elo 3576.

Dann Corbit
Posts: 9849
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by Dann Corbit » Mon Aug 20, 2018 9:36 pm

Leo wrote:
Mon Aug 20, 2018 9:21 pm
Very impressive. Thanks for the effort. BTY, what is his titanic machine?
Number one in this list:
http://www.ipmanchess.yolasite.com/amd- ... -bench.php

Just the CPUs are $50K.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

MikeB
Posts: 3201
Joined: Thu Mar 09, 2006 5:34 am
Location: Pen Argyl, Pennsylvania

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by MikeB » Mon Aug 20, 2018 11:15 pm

Dann Corbit wrote:
Mon Aug 20, 2018 8:18 pm
See:
http://talkchess.com/forum3/viewtopic.p ... &start=472

An incredible effort, with massive thanks to Ronald de Man for the tablebase code and to Bojun Guo for performing the calculations on his titanic machine for five straight months.
I believe this position is the longest cursed win :


Code: Select all

Mac-Pro:cluster.mfb michaelbyrne$ McBrain-97
McB 9.7 64 POPCNT by M. Byrne and scores of others
set syzygypath /Volumes/OWC960/syzygy:/Volumes/S1/Z1/w/:/Volumes/S1/Z1/z/:/Volumes/S2/Z2/43f/:/Volumes/S3/Z3/4v3f/
info string Found 1511 tablebases
Confirmation: syzygypath set to /Volumes/OWC960/syzygy:/Volumes/S1/Z1/w/:/Volumes/S1/Z1/z/:/Volumes/S2/Z2/43f/:/Volumes/S3/Z3/4v3f/
p f QN4n1/6r1/3k4/8/b2K4/8/8/8 b - - 0 1
d

 +---+---+---+---+---+---+---+---+
 | Q | N |   |   |   |   | n |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   | r |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   | k |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 | b |   |   | K |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+

Fen: QN4n1/6r1/3k4/8/b2K4/8/8/8 b - - 0 1
Key: 8A40FB6371DE952F
Checkers: 
Tablebases WDL: Blessed loss (Success)
Tablebases DTZ: -1034 (Success)
uci
id name McB 9.7 64 POPCNT
id author M. Byrne and scores of others

option name Contempt type spin default 21 min -150 max 150
option name Analysis Contempt type combo default Both var Off var White var Black var Both
option name Threads type spin default 1 min 1 max 512
option name Hash type spin default 16 min 1 max 131072
option name Clear_Hash type button
option name Clean_Search type check default false
option name Tactical type spin default 0 min 0 max 8
option name Ponder type check default false
option name MultiPV type spin default 1 min 1 max 256
option name BruteForce type check default false
option name FastPlay type check default false
option name No_Null_Moves type check default false
option name UCI_LimitStrength type check default false
option name Minimal_Output type check default false
option name UCI_ELO type spin default 1500 min 1500 max 2800
option name Skill Level type spin default 20 min 0 max 20
option name Move Overhead type spin default 30 min 0 max 5000
option name Minimum Thinking Time type spin default 20 min 0 max 5000
option name Slow Mover type spin default 84 min 10 max 1000
option name nodestime type spin default 0 min 0 max 10000
option name UCI_Chess960 type check default false
option name UCI_AnalyseMode type check default false
option name SyzygyPath type string default <empty>
option name SyzygyProbeDepth type spin default 1 min 1 max 100
option name Syzygy50MoveRule type check default true
option name SyzygyProbeLimit type spin default 7 min 0 max 7
option name Book_Enabled type check default true
option name BookFile type string default <empty>
option name BestBookMove type check default true
option name BookDepth type spin default 255 min 1 max 255
uciok
s Syzygy50MoveRule false
Confirmation: Syzygy50MoveRule set to false
go movetime 3000
info depth 1 seldepth 2 multipv 1 score cp 15396 nodes 13 nps 13000 tbhits 26 time 1 pv g7g4 d4d3
info depth 2 seldepth 3 multipv 1 score cp 15396 nodes 57 nps 57000 tbhits 26 time 1 pv g7g4 d4d3 g8f6 a8a6 d6e5
info depth 3 seldepth 5 multipv 1 score cp 15396 nodes 97 nps 97000 tbhits 26 time 1 pv g7g4 d4d3 g8f6 a8a6 d6e5
info depth 4 seldepth 7 multipv 1 score cp 15396 nodes 672 nps 336000 tbhits 26 time 2 pv g7g4 d4d3 g4b4 d3e2 b4b3 a8a6 d6e5
info depth 5 seldepth 7 multipv 1 score cp 15396 nodes 1169 nps 584500 tbhits 26 time 2 pv g7g4 d4d3 g4b4 d3d2 g8f6 a8a6 d6e7
info depth 6 seldepth 12 multipv 1 score cp 15396 nodes 6267 nps 1566750 tbhits 26 time 4 pv g7g4 d4e3 g8e7 a8f3 g4c4 e3f2 e7d5
info depth 7 seldepth 10 multipv 1 score cp 15396 nodes 10217 nps 1702833 tbhits 26 time 6 pv g7g4 d4c3 g8e7 a8a5 g4f4 a5d8 d6e6 b8a6 e7d5 c3b2 f4f2 b2a3
info depth 8 seldepth 16 multipv 1 score cp 15396 nodes 31347 nps 1959187 tbhits 26 time 16 pv g7g4 d4d3 g8f6 a8f3 a4b5 d3e3 f6d5 e3f2 g4c4 f3f8 d6c7 f2g1
info depth 9 seldepth 17 multipv 1 score cp 15396 nodes 56315 nps 2085740 tbhits 26 time 27 pv g7g4 d4c3 g8f6 b8a6 f6d5 c3b2 g4c4 a8b8 d6e6 b8f8 d5e3 a6b4 a4b5
info depth 10 seldepth 19 multipv 1 score cp 15396 nodes 78286 nps 2174611 tbhits 26 time 36 pv g7g4 d4c3 g8f6 b8a6 f6d5 c3b2 g4c4 a8b8 d6c6 b8e5 d5c3 a6b4 c6b7 b4d5 c3d5 e5d5 c4c6 b2a3
info depth 11 seldepth 25 multipv 1 score cp 15396 nodes 236284 nps 2208261 tbhits 26 time 107 pv g7g4 d4c3 g8f6 b8a6 f6d5 c3b2 g4c4 a8b8 d6d7 b2a3 d5c3 a6b4 d7e7 b8e5 e7f7 b4d3 c3b1 a3b2
info depth 12 seldepth 27 multipv 1 score cp 15396 nodes 296475 nps 2196111 tbhits 26 time 135 pv g7g4 d4c3 g8f6 b8a6 f6d5 c3b2 g4c4 a8b8 d6e6 b8f8 e6e5 a6c5 e5d4 c5a4 c4a4 f8d6 a4a5
info depth 13 seldepth 28 multipv 1 score cp 15396 nodes 396672 nps 2179516 tbhits 26 time 182 pv g7g4 d4c3 g8f6 b8a6 f6d5 c3b2 g4c4 a8f8 d6e5 a6c5 e5d4 c5e6 d4e5 e6g5 c4b4 b2a1 a4b3 f8g7 e5d6 g5f7 d6c7 f7e5 c7d6 e5d3 b4e4 a1b2
info depth 14 seldepth 34 multipv 1 score cp 15396 nodes 686691 nps 2186914 tbhits 26 time 314 pv g7g4 d4e3 g8f6 b8a6 f6d5 e3f2 g4c4 a8f8 d6e5 f2g1 e5d4 f8h8 d4d3 h8e5 a4c6 e5d6 d3e2 a6c5 c4g4 g1h2
info depth 15 seldepth 33 multipv 1 score cp 15396 nodes 1057754 nps 2194510 tbhits 26 time 482 pv g7g4 d4e3 g8f6 b8a6 f6d5 e3f2 g4c4 a8f8 d6e5 f2g3 d5f6 a6c5 e5d5 c5a4 f6e4 g3g2 c4a4 f8f7 d5c5 g2f3 c5d6 f3e3 e4c5 f7f6 d6d5
info depth 16 seldepth 32 multipv 1 score cp 15396 nodes 1343434 nps 2198746 tbhits 26 time 611 pv g7g4 d4e3 g8f6 b8a6 f6d5 e3f2 g4c4 f2g1 a4b5 a8f8 d6c6 f8e8 c6b6 e8e6 b6b7 e6d5 b7a6 g1f2 a6b6 f2e3 c4c7 e3f4 c7d7
info depth 17 seldepth 37 multipv 1 score cp 15396 nodes 2413675 nps 2180374 hashfull 831 tbhits 26 time 1107 pv g7g4 d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 f2g1 a4b5 a8f8 d6c6 f8e8 c6b6 e8e6 b6b7 e6d5 b7a6 g1f2 a6b6 f2e3 c4c7 d5d4 b6a6 d4b2 c7c5 e3f4 a6b6 b2b4 b6c6
info depth 18 seldepth 34 multipv 1 score cp 15396 nodes 3156764 nps 2184611 hashfull 910 tbhits 26 time 1445 pv g7g4 d4c3 g8f6 a8a6 d6e5 a6e2 e5f5 b8a6 a4c6 e2h2 c6b7 a6c5 f6e4 c5e4 b7e4 h2d6 g4g6 d6c5 f5g4 c5e3 g6c6 c3b4 e4f5 e3f2
info depth 19 seldepth 42 multipv 1 score cp 15396 nodes 4830539 nps 2166160 hashfull 989 tbhits 26 time 2230 pv g7g4 d4c3 g8f6 a8a6 d6e5 a6e2 g4e4 e2h2 e5f5 b8a6 a4b5 a6c7 b5c4 h2d6 f5g6 c3b4 g6f7 d6g3 c4d5 b4a5 e4e7 c7b5 e7d7 g3f2 f7g6 f2c5 g6f7 b5d6 f7g8
info depth 20 seldepth 43 multipv 1 score cp 15396 nodes 6480402 nps 2163018 hashfull 997 tbhits 26 time 2996 pv g7g4 d4c3 g8f6 a8a6 d6e5 a6e2 g4e4 e2h2 e5f5 b8a6 a4b5 h2h3 f5e5 h3g3 e4f4 a6c5 f6e4 c5e4 e5e4 g3g7 f4f3 c3b4 b5e2 g7b7 e4d3 b4b3 e2d1 b3b2 d3d2 b7b4 d2e2 b2c1 f3d3 b4c5 d1b3 c5f5 e2e3
info depth 21 seldepth 43 multipv 1 score cp 15396 nodes 6492782 nps 2163539 hashfull 997 tbhits 26 time 3001 pv g7g4 d4c3 g8f6 a8a6 d6e5 a6e2 g4e4 e2h2 e5f5 b8a6 a4b5 h2h3 f5e5 h3g3 e4f4 a6c5 f6e4 c5e4 e5e4 g3g7 f4f3 c3b4 b5e2 g7b7 e4d3 b4b3 e2d1 b3b2 d3d2 b7b4 d2e2 b2c1 f3d3 b4c5 d1b3 c5f5 e2e3
bestmove g7g4 ponder d4c3
so far so good:
I post the position with the move played above Rg4+

Code: Select all

d

 +---+---+---+---+---+---+---+---+
 | Q | N |   |   |   |   | n |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   | k |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 | b |   |   | K |   |   | r |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+

Fen: QN4n1/8/3k4/8/b2K2r1/8/8/8 w - - 1 2
Key: 498CC88764B12036
Checkers: g4 
Tablebases WDL: Cursed win (Success)
Tablebases DTZ: 1033 (Success)
go movetime 3000
info depth 1 seldepth 1 multipv 1 score cp 0 nodes 23 nps 11500 tbhits 4 time 2 pv d4e3
info depth 2 seldepth 2 multipv 1 score cp 0 nodes 32 nps 16000 tbhits 4 time 2 pv d4e3 g8e7
info depth 3 seldepth 4 multipv 1 score cp 0 nodes 70 nps 35000 tbhits 4 time 2 pv d4e3 g8e7 a8a6 d6e5
info depth 4 seldepth 7 multipv 1 score cp 0 nodes 135 nps 67500 tbhits 4 time 2 pv d4e3 g8e7 a8a6 d6e5 a6a5 e7d5 e3f3
info depth 5 seldepth 9 multipv 1 score cp 0 nodes 220 nps 110000 tbhits 4 time 2 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4
info depth 6 seldepth 8 multipv 1 score cp 0 nodes 297 nps 148500 tbhits 4 time 2 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5
info depth 7 seldepth 10 multipv 1 score cp 0 nodes 391 nps 195500 tbhits 4 time 2 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8b8 e5e6
info depth 8 seldepth 12 multipv 1 score cp 0 nodes 514 nps 257000 tbhits 4 time 2 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8b8 e5e6 b8g8 e6d6
info depth 9 seldepth 14 multipv 1 score cp 0 nodes 701 nps 350500 tbhits 4 time 2 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8b8 e5e6 b8g8 e6d6 g8g3 d6c6
info depth 10 seldepth 15 multipv 1 score cp 0 nodes 940 nps 470000 tbhits 4 time 2 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8b8 e5e6 b8g8 e6d6 g8g3 d6c6 g3e5
info depth 11 seldepth 18 multipv 1 score cp 0 nodes 1776 nps 592000 tbhits 4 time 3 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8b8 e5e6 b8g8 e6d6 g8g3 d6c6 g3e5 a4b5 a6b8 c6c5
info depth 12 seldepth 18 multipv 1 score cp 0 nodes 2173 nps 724333 tbhits 4 time 3 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8b8 e5e6 b8g8 e6d6 g8g3 d6c6 g3e5 a4b5 a6b8 c6c5
info depth 13 seldepth 19 multipv 1 score cp 0 nodes 2735 nps 911666 tbhits 4 time 3 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8b8 e5e6 b8g8 e6d6 g8g3 d6c6 g3g6 c6d7 g6d3 c4c2 f2g3
info depth 14 seldepth 24 multipv 1 score cp 0 nodes 3594 nps 898500 tbhits 4 time 4 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8b8 e5e6 b8g8 e6d6 g8g3 d6c6 g3g6 c6d7 g6f7 d7d6 f2g3 a4b5 f7g6 d6e7 g6g7 e7e6 g7g8 e6d6 g8b8 d6c6
info depth 15 seldepth 30 multipv 1 score cp 0 nodes 15748 nps 1574800 tbhits 4 time 10 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8g7 e5e6 g7g8 e6d6 g8g3 d6c6 g3e5 a4b5 e5e8 c6b6 e8e6 b6b7 e6d5 b7a6 f2e3 a6b6
info depth 16 seldepth 28 multipv 1 score cp 0 nodes 18860 nps 1714545 tbhits 4 time 11 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8g7 e5e6 g7g8 e6d6 g8g3 d6c6 g3e5 a4b5 e5e6 c6b7 e6d5 b7a6 f2e3 a6b6 d5d8 b6b7 d8e7 c4c7 e7e4 b7b6 e4d4 b6b7
info depth 17 seldepth 35 multipv 1 score cp 0 nodes 113605 nps 1993070 tbhits 4 time 57 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8g7 e5e6 g7g8 e6d6 g8g3 d6c6 g3g6 c6d7 a6b8 d7e7 g6a6 c4c2 f2g3 c2c3 g3h4 a4d7 a6a7 d5f6 b8d7 f6d7
info depth 18 seldepth 28 multipv 1 score cp 0 nodes 122257 nps 2004213 tbhits 4 time 61 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8g7 e5e6 g7g8 e6d6 f2g3 a4b5 g8b8 d6c6 b8e8 c6b6 e8e6 b6b7 e6d5 b7a6 g3f2 c4c6 d5f5 a6b6 f5e5 c6c4
info depth 19 seldepth 29 multipv 1 score cp 0 nodes 292263 nps 2072787 tbhits 4 time 141 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8g7 e5e6 g7g8 e6d6 g8g3 d6c6 g3g6 c6d7 a6b8 d7e7 g6g7 e7d6 g7g3 d6e6 g3g8 e6d6 g8d8 d6e5 d8a5 c4c2 f2g3 c2c4
info depth 20 seldepth 37 multipv 1 score cp 0 nodes 1609722 nps 2115272 tbhits 4 time 761 pv d4e3 g8e7 e3f2 e7d5 a8a6 d6e5 a6e2 e5f5 e2d3 f5e5 d3d2 g4c4 d2e2 e5d4 e2g4 d4d3 g4e6 d5c3 f2g2 a4b5 b8a6 b5a6 e6a6 c3e4 a6a5 c4c2 g2h3 d3d4 a5a1 c2c3 h3h4
info depth 21 seldepth 41 multipv 1 score cp 0 nodes 3116772 nps 2110204 hashfull 890 tbhits 4 time 1477 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8h8 e5e6 h8g8 e6d6 g8g3 d6c6 g3e5 a4b5 e5e6 c6b7 e6d5 b7a6 d5e5 a6b6 f2g3 b5c6 g3h3 c6b5 e5b8 b6a6 b8a8 a6b6 a8f3 c4c2 f3f6 c2c6
info depth 22 seldepth 37 multipv 1 score cp 0 nodes 3516569 nps 2117139 hashfull 925 tbhits 4 time 1661 pv d4e3 g8e7 b8a6 e7d5 e3f2 g4c4 a8f8 d6e5 f8h8 e5e6 h8g8 e6d6 g8g3 d6c6 g3e5 a4b5 e5e6 c6b7 e6d5 b7a6 d5e5 a6b6 f2g3 b6a6 e5f6 a6a5 f6b2 b5c6 g3h3 c6b5 b2a3 a5b6 a3e7 b6a6
info depth 23 seldepth 44 multipv 1 score cp 0 nodes 5503892 nps 2145766 hashfull 983 tbhits 4 time 2565 pv d4e3 g8e7 e3f2 e7d5 a8a6 d6e5 a6e2 e5f5 e2d3 f5e5 d3d2 g4c4 d2e2 e5d4 e2g4 d4d3 g4e6 d5c3 f2g2 c4e4 e6d6 d3c2 g2g3 a4b5 b8c6 b5c6 d6c6
info depth 24 seldepth 46 multipv 1 score cp 0 nodes 6416101 nps 2140841 hashfull 987 tbhits 4 time 2997 pv d4e3 g8e7 e3f2 e7d5 a8a6 d6e5 a6e2 e5f5 e2d3 f5e5 d3d2 g4c4 d2e2 e5d4 e2g4 d4d3 g4g6 d3d4 g6a6 d5c3 a6f6 d4d3 f6f5 d3d2 f2f3 d2c1 f3g2 c3e2 b8a6 e2f4 g2f1
info depth 25 seldepth 46 multipv 1 score cp 0 nodes 6424950 nps 2140936 hashfull 987 tbhits 4 time 3001 pv d4e3 g8e7 e3f2 e7d5 a8a6 d6e5 a6e2 e5f5 e2d3 f5e5 d3d2 g4c4 d2e2 e5d4 e2g4 d4d3 g4g6 d3d4 g6a6 d5c3 a6f6 d4d3 f6f5 d3d2 f2f3 d2c1 f3g2 c3e2 b8a6 e2f4 g2f1
bestmove d4e3 ponder g8e7
It no longer sees mate , and worse it plays a drawing move when the winning mover under the no 50 move rule is Kc3

any ideas ? One thing, I have noticed is that the size of the KRBNvKQN files on this site:
ftp://ftp.chessdb.cn/pub/syzygy/

are different than those this site:
http://tablebase.lichess.ovh/tables/standard/7/

with different timestamps. I suspect that may be relevant here.

User avatar
phhnguyen
Posts: 355
Joined: Wed Apr 21, 2010 2:58 am
Location: Australia
Full name: Nguyen Hong Pham
Contact:

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by phhnguyen » Mon Aug 20, 2018 11:35 pm

Dann Corbit wrote:
Mon Aug 20, 2018 9:36 pm
Just the CPUs are $50K.
Plus RAM, hard disks, mainboard... => about $70K?

Amazing that a $70K computer has completed a similar job in almost a same period (5-6 months) which Lomonosov supercomputer which is 75 tons and worth $63M (900 times more expensive)
https://github.com/nguyenpham/Banksia
An open source C++11 chess tournament manager

Dann Corbit
Posts: 9849
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by Dann Corbit » Mon Aug 20, 2018 11:55 pm

phhnguyen wrote:
Mon Aug 20, 2018 11:35 pm
Dann Corbit wrote:
Mon Aug 20, 2018 9:36 pm
Just the CPUs are $50K.
Plus RAM, hard disks, mainboard... => about $70K?

Amazing that a $70K computer has completed a similar job in almost a same period (5-6 months) which Lomonosov supercomputer which is 75 tons and worth $63M (900 times more expensive)
I guess $100K.
Probably at least 1.5 TB RAM (since you cannot build the 7 man files with 1 TB). I guess $30K for that and more if he has 2TB.
The disk drives will be SAS and really expensive too. I make a wild guess of $5000 for that.
Those kind of systems tend to be overbuilt with redundant high-end everything (high speed raid cards, high speed network cards, between 2 and 4 one kilowatt or more power supplies) etc.

Anyway, I won't be buying one of those any time soon.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Dann Corbit
Posts: 9849
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by Dann Corbit » Mon Aug 20, 2018 11:57 pm

phhnguyen wrote:
Mon Aug 20, 2018 11:35 pm
Dann Corbit wrote:
Mon Aug 20, 2018 9:36 pm
Just the CPUs are $50K.
Plus RAM, hard disks, mainboard... => about $70K?

Amazing that a $70K computer has completed a similar job in almost a same period (5-6 months) which Lomonosov supercomputer which is 75 tons and worth $63M (900 times more expensive)
Recall also that the Lomonosov files are different. They compute distance to mate, rather than distance to conversion.

Now, I do not know if those calculations are more arduous or not.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Leo
Posts: 791
Joined: Fri Sep 16, 2016 4:55 pm
Location: USA/Minnesota
Full name: Leo

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by Leo » Tue Aug 21, 2018 12:02 am

Dann Corbit wrote:
Mon Aug 20, 2018 9:36 pm
Leo wrote:
Mon Aug 20, 2018 9:21 pm
Very impressive. Thanks for the effort. BTY, what is his titanic machine?
Number one in this list:
http://www.ipmanchess.yolasite.com/amd- ... -bench.php

Just the CPUs are $50K.
Interesting. I hope he plays a match with an engine on that. Maybe the TCEC computer vs that.
BrainFish-2 190310 bmi2 Elo 3576.

Milos
Posts: 3379
Joined: Wed Nov 25, 2009 12:47 am

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by Milos » Tue Aug 21, 2018 12:09 am

phhnguyen wrote:
Mon Aug 20, 2018 11:35 pm
Amazing that a $70K computer has completed a similar job in almost a same period (5-6 months) which Lomonosov supercomputer which is 75 tons and worth $63M (900 times more expensive)
63M$ figure is total BS. That "supercomputer" contains 12k X5570 CPUs that cost today like 10-15$ each. When they appeared they were like 1500$ each but this was way overpriced and could have been bought in bulk for 500$ at most.
So that was like 6m$ for CPUs. Even if everything else was another 4m$ that is still 6x lower figure than what they said it cost.
Today one could build that "supercomputer" for under 300k$.

mar
Posts: 1981
Joined: Fri Nov 26, 2010 1:00 pm
Location: Czech Republic
Full name: Martin Sedlak

Re: BIG NEWS! The 7 man syzygy tablebase files are complete.

Post by mar » Tue Aug 21, 2018 1:19 pm

Just wow. Congratulations!
Martin Sedlak

Post Reply