Author: K. Burcham
Date: 20:08:42 08/15/05
about the same as your Opteron
Position 22
[D] 2r2rk1/1bqnbpp1/1p1ppn1p/pP6/N1P1P3/P2B1N1P/1B2QPP1/R2R2K1 b - - 0 1
Athlon 64 3400+
2200 mhz
256 hash
764 Pins
1 meg on die cache
Windows XP Pro
Crafty 19.01: Running in Chessbase, default settings
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Rxe4 5.Nxd7 Nxd7 6.Rab1 Nb6 7.Bd4 Nc4
8.a4 Re2
³ (-0.43) Depth: 14/32 00:00:40 52295kN
Here is some data. I'm going to use one cpu on my xeon 2.8ghz box
to search kopec position 22 to 14 plies... Then I'll do the same on a single
opteron CPU. First the xeon:
14 52.77 -0.31 1. ... Bxe4 2. Bxe4 Qxc4 3. Qxc4 Rxc4
4. Nxb6 Nxb6 5. Bd3 Rc7 6. Nd4 Rd7
7. Nc6 a4 8. Bd4 Nfd5
14-> 1:35 -0.31 1. ... Bxe4 2. Bxe4 Qxc4 3. Qxc4 Rxc4
4. Nxb6 Nxb6 5. Bd3 Rc7 6. Nd4 Rd7
7. Nc6 a4 8. Bd4 Nfd5
and then the opteron:
14 26.58 -0.31 1. ... Bxe4 2. Bxe4 Qxc4 3. Qxc4 Rxc4
4. Nxb6 Nxb6 5. Bd3 Rc7 6. Nd4 Rd7
7. Nc6 a4 8. Bd4 Nfd5
14-> 43.28 -0.31 1. ... Bxe4 2. Bxe4 Qxc4 3. Qxc4 Rxc4
4. Nxb6 Nxb6 5. Bd3 Rc7 6. Nd4 Rd7
7. Nc6 a4 8. Bd4 Nfd5
So, 95 / 43.28 = 2.19X faster.
Note that this is a 2.2ghz opteron, not 2.4, the 2.4 will be 10% faster still.
Also note that this is a 32 bit version of crafty on the xeon (the xeon is a 32
bit architecture) vs a 64 bit version of crafty on the opteron.
there is simply no comparison...
Crafty 19.01:
1...Bxe4
³ (-0.44) Depth: 7/23 00:00:00 323kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Rxe4 5.Nxd7 Nxd7
³ (-0.49) Depth: 7/23 00:00:00 362kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Rxe4 5.Nxd7 Nxd7
³ (-0.49) Depth: 8/23 00:00:00 481kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Nxb6 5.Bd3 Rc5
³ (-0.39) Depth: 9/23 00:00:01 823kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Rxe4 5.Nxd7 Nxd7 6.Bc3 a4
³ (-0.50) Depth: 10/23 00:00:01 1574kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Nxb6 5.Bd3 Rc7 6.Bd4 Nfd7
³ (-0.28) Depth: 11/24 00:00:02 2651kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Rxe4 5.Nxd7 Nxd7 6.Bd4 Rd8 7.b6 Rxd4
8.Nxd4 Nxb6
³ (-0.50) Depth: 12/30 00:00:05 6008kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Nxb6 5.Bd3 Rcc8 6.Bd4 Nfd5 7.Rac1 Rfd8
8.Rxc8 Rxc8
= (-0.24) Depth: 13/30 00:00:10 12965kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Rxe4 5.Nxd7 Nxd7 6.Rab1 Nb6 7.Bd4 Nc4
8.a4 Re2
³ (-0.43) Depth: 14/32 00:00:40 52295kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Rxe4 5.Nxd7 Nxd7 6.Rac1 Rd8 7.Rc7 Re2
8.Rd2 Rxd2 9.Nxd2
³ (-0.33) Depth: 15/32 00:01:09 93809kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Rxe4 5.Bxf6 Nxf6 6.Rdc1 Rb8 7.Nc8 Bf8
8.b6 Rb7 9.Rab1 Re2
³ (-0.31) Depth: 16/36 00:02:35 209345kN
1...Bxe4 2.Bxe4 Qxc4 3.Qxc4 Rxc4 4.Nxb6 Nxb6 5.Bd3 Rc7 6.Rac1 Rfc8 7.Rxc7 Rxc7
8.Nd4 d5 9.Nc6 a4 10.Bd4
= (-0.23) Depth: 17/36 00:06:36 537833kN
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.