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Subject: Re: Shredder 8 bug continues in latest GUI-hash resizing/Infinite Analysis

Author: m.d.hurd

Date: 15:13:35 04/20/04

Go up one level in this thread


On April 20, 2004 at 08:40:36, William Penn wrote:

>On April 19, 2004 at 18:03:19, m.d.hurd wrote:
>
>>On April 19, 2004 at 10:29:27, William Penn wrote:
>>
>>>On April 19, 2004 at 03:20:02, m.d.hurd wrote:
>>>
>>>>On April 19, 2004 at 03:14:23, m.d.hurd wrote:
>>>>
>>>>>On April 19, 2004 at 02:47:16, William Penn wrote:
>>>>>
>>>>>>To be more precise...
>>>>>>
>>>>>>This bug happens in the following sequence:
>>>>>>
>>>>>>(1) the engine is NOT running
>>>>>>(2) change the hash size
>>>>>>(3) attempt to start Infinite Analysis mode
>>>>>>
>>>>>>I repeat - the engine is not running when the hash size was changed in step 2.
>>>>>>
>>>>>>Then Step 3 attempts to start the engine in Infinite Analysis mode, but the
>>>>>>exception happens instead. Thereafter Infinite Analysis mode will not work until
>>>>>>the GUI is exited and restarted.
>>>>>>
>>>>>>Actually the engine can be running without this error happening. I do that
>>>>>>frequently, and seldom have a problem! In other words, this bug is not related
>>>>>>to whether or not the engine is running. That's irrelevant, and misses the
>>>>>>point.
>>>>>>
>>>>>>The main point is that Infinite Analysis mode in Shredder 8 is buggy in the
>>>>>>native CB GUI. This is just one of the bugs. There are others. For example if
>>>>>>you access the Help - About menu, that stops the engine in Infinite Analysis
>>>>>>mode. Also sometimes when accessing the scoresheet while Infinite Analysis mode
>>>>>>is running, that restarts the engine calculating from zero (0). In addition the
>>>>>>above hash resizing/Infinite Analysis mode bug is obviously not properly
>>>>>>integrated with Windows XP Home, which does not recognize that an exception has
>>>>>>occurred. (The prior GUI recognized it properly.)
>>>>>>
>>>>>>Re hash size:
>>>>>>There are good reasons to change the hash size. When the endgame approaches, the
>>>>>>engine starts to slow down due to tablebase access. This can be extreme and
>>>>>>causes severe hard drive chugging. According to my tests, the only way to speed
>>>>>>it up again is to lower hash size. At least it works that way on my computer.
>>>>>>Now I suppose you will claim that my processor is overheating, or I need to do a
>>>>>>scandisk, defrag, etc.
>>>>>>
>>>>>>Why not just face it - Shredder 8 is buggy in the native CB GUI (particularly in
>>>>>>Infinite Analysis mode), but it works fine in the Classic Shredder GUI!
>>>>>>WP
>>>>>Hello William
>>>>>
>>>>>I have the latest GUI running Shredder 8. Windows XP with 1 gb ram. I tried to
>>>>>re-create the error you mentioned but could not. Every thing works fine on my
>>>>>machine.
>>>>>
>>>>>Regards
>>>>>
>>>>>Mike
>>>>
>>>>Also tried accessing help while engine was running in infinite analysis mode.
>>>>The engine carried on calculating normaly.
>>>>
>>>>Regards
>>>>
>>>>Mike
>>>
>>>Then something is different about our machines. I am running an AMD Athlon XP
>>>2400+ processor at 2.0GHz, 1GB RAM, and the English version of Windows XP Home
>>>(SP1) with all of the latest upgrades. I wonder... Does Chessbase (or you) test
>>>these programs on an Athlon processor, or only on Pentium processors? Are they
>>>tested on Windows XP Home (SP1)?
>>>WP
>>
>>Looks like we have very similar machine specs.
>>
>>Athlon 2400 xp running at 2.0 Ghz, 1 Gb Ram, Nvidia Geoforce 4 TI 4200 graphics
>>card, Creative Audigy sound card, English version of windows xp home. All the
>>latest updates for windows, graphics card, motherboard and bios.
>>
>>Regards
>>
>>Mike
>
>And are we talking about the same thing?
>
>It occurred to me overnight that your reference to Help was imprecise, as was my
>original comment. I'm talking about:
>
>(1) turn on Infinite Analysis mode
>(2) click the Help menu on the chessboard screen in the native CB GUI
>(3) click the "About Shredder 8..." item therein
>(4) on my computer, Infinite Analysis mode immediately stops calculating (the
>clock stops)
>
>I have seen this Help-About bug confirmed here by someone else in the past, but
>don't recall if it was you.
>
>I can understand that someone might not see the hash resizing/Infinite Analysis
>mode bug unless they use Infinite Analysis mode like I do. I ONLY use Infinite
>Analysis mode, nothing else, so I am almost certain to find any related bugs.
>Those who only use it occasionally may never encounter them, or only rarely, in
>which case they might consider it a temporary glitch and ignore it. This hash
>resizing/Infinite Analysis mode bug is one that even I cannot reproduce! It
>doesn't happen every time. It appears random. It maybe only happens 10% of the
>time.
>WP

I confirm that help followed by about stops the engine display in its tracks,
but the main clock carries on, wierd.

Regards

Mike



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