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Subject: Mathieu Pagé and Robert "Cobra Jet " Hyatt

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






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