You can find Rebel 10 in the package here : http://rebel13.nl/rebel13/rebel%2013.html
All DOS editions from Mephisto Gideon Professional (1993) till Rebel 12 (2003)
I ran the benchmark inside DosBox but it's quite slow. I got a 2539 performance for my 4 GHz CPU.
Can somebody run the benchmark under a real DOS (or a DOS emulation under Linux ?) with a modern CPU (> 3 GHz), please ?
To run the benchmark, go to first menu "Start", then click "Bench test", it will run automatically the 3 positions from the page and report a rating at the end.
EPD file analysis logfile created by Rebel 10
---------------------------------------------
EPD file : BENCH.EPD
Date : 2019-06-25
Number of positions : 3
Hash table size : 4 Mb
Used time level : 6 plys deep
---------------------------------------------
Position : 1
Best Move : e5f7
00:00:20 6.10 1.24 Ne5xf7 Re8xe1+ Qd2xe1 Qd8-f8 Bf1-c4 Nd7-b6 Nf7-h6+
Key move found at 14 seconds
Total moves found sofar 1
Total time sofar 14 seconds
Key move e5f7 was found at ply 06.10 in 14 seconds
Bench rating sofar 2596
Position : 2
Best Move : d8d7
00:01:14 6.08 3.09 Rd8-d7+ Bc6xd7 Nf6-d5+ Ke7-e8 Qa1-f6 Ne6-g7 Bg3-e5
Key move found at 69 seconds
Total moves found sofar 2
Total time sofar 83 seconds
Key move d8d7 was found at ply 06.08 in 69 seconds
Bench rating sofar 2573
Position : 3
Best Move : g1g7
00:01:44 6.20 0.00 Rg1xg7+ Bf6xg7 Rd1-g1 Rf8-c8 Rg1xg7+ Kg8xg7 Qh5-h6+
Key move found at 104 seconds
Total moves found sofar 3
Total time sofar 187 seconds
Key move g1g7 was found at ply 06.20 in 104 seconds
Bench rating sofar 2539
Gained BENCH rating is : 2539
To contribute to the REBEL BENCH MARK LIST please enter the
below information on the Internet to: http://www.rebel.nl/bench.htm
Pos (1) 14 seconds
Pos (2) 69 seconds
Pos (3) 104 seconds
BENCH rating 2539
In linux I find that the DOS Rebel chess programs run very slow using DosBox. They run faster in DosBox on Windows 10, but are still pretty slow compared to when run in Windows 98.
I have recently installed Rebel 10 on this linux computer, that I use on the internet. The OS is Mint 18.1 and cpu is modern Intel N3050, not fast, only 1.6GHz dual core, but it is very low power.
Rebel 10 runs inside VirtualBox which has Windows 98SE installed.
The benchtest result was 2591 as shown in screenshot below.
The benchtest results seem strange, since I got to 10 million positions in 18 seconds but you took over 1 minute according to the screenshots. My nodes per second were much higher than yours.
Colin-G wrote: ↑Tue Jun 25, 2019 11:56 am
In linux I find that the DOS Rebel chess programs run very slow using DosBox. They run faster in DosBox on Windows 10, but are still pretty slow compared to when run in Windows 98.
I have recently installed Rebel 10 on this linux computer, that I use on the internet. The OS is Mint 18.1 and cpu is modern Intel N3050, not fast, only 1.6GHz dual core, but it is very low power.
Rebel 10 runs inside VirtualBox which has Windows 98SE installed.
The benchtest result was 2591 as shown in screenshot below.
The benchtest results seem strange, since I got to 10 million positions in 18 seconds but you took over 1 minute according to the screenshots. My nodes per second were much higher than yours.
Thanks for your test !
Yes, the speed displayed on my screen was around 95Kn/sec and your speed is around 500 Kn/sec in native mode.
I searched for a speed comparison between a N3050 and a i7@4GHz, the latest seems around 4 times faster.
That means with a fast recent CPU, Rebel 10 could reach 2 Mn/sec
I'll take a closer look at VirtualBox !
Just fired up one of my old computers which dual boots between Windows XP and Windows 98SE.
The cpu is an old AMD Sempron 2400+ (32 bit, 1.67GHz)
The benchmark in Windows 98SE was 2590, almost the same as the result in my previous post.
Could not take a screenshot, so took a photo with my camera, which is below.
I just see on the page http://www.rebel.nl/bench.htm, the maximum rating is set to 2600.
So, it's probably better to stay with nps and time for the 3 positions.
