Author: Robert Hyatt
Date: 10:13:49 05/02/01
Go up one level in this thread
On May 02, 2001 at 12:43:30, Chessfun wrote: >On May 02, 2001 at 11:43:10, Robert Hyatt wrote: > >>On May 02, 2001 at 02:32:27, Chessfun wrote: >> >>> >>> >>>>A SMP version of Tiger exists. Actually existed last year. >>>>A friend of mine went on a long hollyday last year, and instead of leaving his >>>>dual system unused at home, he lent it to me. >>>>I developped a SMP version on top of Chess Tiger 12.2. >>>>But as I already told several times SMP was not a priority for me. So once I had >>>>SMP working, I disabled the code in Tiger's source code. I did not erase it of >>>>course, I just deactivated the relevant parts of code. >>>>Since then, Tiger has evolved on many points, including a different internal >>>>move coding and a different hash table structure. >>>>So now I cannot just reactivate the SMP code. It will not work directly. I need >>>>to reactivate it and adapt it to what has changed in the latest Tiger engines. >>> >>>>It's not a lot of work. The principle of the SMP algorithm does not have to be >>>>rewritten, it's just a matter of adapting the code. >>> >>>>I just asked for a little delay in order to do that and to double check that >>>>everything was working. >>> >>>>You can have your doubts about this SMP version, but after all if I send a SMP >>>>Tiger that crashes in Cadaques, I will be the one to look stupid, not the >>>>organizers of the Kramnik match. > >>I'm willing to let a lot of hype slip by, but not _everything_. It seems you >>are saying you developed an SMP search over a weekend. I have too much >>experience with parallel search to believe that. I don't think I could even >>steal my SMP code and move it into something like gnuchess in a single weekend, >>and get it working reliably. >>Believe me, this is _not_ a weekend task. It is not a month task. It is really >>not a year task. > > >He wrote he had the dual while his friend was on a long holiday. >Long clearly isn't a weekend?. I never read I developed it in >a weekend?. Here, a "long holiday" usually means a holiday that falls on a Friday or Monday to make a long weekend. But even if it were two weeks. That isn't enough time. Maybe to get something barely written, but not tested, debugged, tuned, etc... If it were only that easy... > > > >>I would not ever believe there is an SMP Rebel until there is a windows version >>of Rebel. DOS is _not_ capable of running on an SMP platform itself, much less >>managing threads in any way... I have a _really_ hard time believing that a >>robust SMP algorithm is a week-end project, unless I am a far worse programmer >>than I believe. And unless _everybody_ else that has done one is also pretty >>incompetent as well... > > >The program in question is Tiger 12.2. Tiger 12.0 was a windows program. >I saw no mention of Rebel here? just Tiger. > >Sarah. Ed originally mentioned that BGN has not asked about an SMP Rebel or an SMP Tiger. And implied both really existed. Not in DOS...
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