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Subject: Re: a fatal Shredder 8 hash resizing bug

Author: William Penn

Date: 06:03:59 03/15/04

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On March 15, 2004 at 04:57:27, Dave Gomboc wrote:

>On March 13, 2004 at 09:24:50, William Penn wrote:
>
>>Fatal error when changing hash size in Shredder 8 (native CB GUI). This has
>>happened many times. It doesn't always happen and seems unpredictable, but
>>happens perhaps about 25% of the time. It may relate to having infinite analysis
>>mode active & running when changing hash size, perhaps with several lines of
>>analysis being produced, but I'm not sure.
>
>Sounds like there's a defect in the GUI: it shouldn't let you try to change the
>hash table size in mid-search.
>
>Dave

I think it should be intelligent enough to allow changing the hash size anytime.
That would just require a little more intelligence in the algorithm to make the
necessary adjustments "on the fly". I have always done it that way with prior
engines and prior GUI versions and never had a problem, so I believe they did so
in prior versions. It is obviously a new bug specific to the latest Shredder
8/GUI.

At first I thought a workaround was to turn off the engine before changing the
hash size. That worked at first, for quite awhile, but eventually (last night)
it invoked the same bug (fatal exception). So there's a fundamental flaw in the
GUI and/or Shredder 8 engine related to hash size/resizing.

I note that the first release version of Shredder 7 had a bug that wouldn't
allow big RAM/hash sizes, which was "fixed" in an update in March 2003 if I
recall correctly. So obviously this product is not very well debugged before
release. Although it was "fixed" it is still not fully integrated with/in the
GUI. When you try to implement large hash sizes, the query that comes up
indicates that they only patched it, not really fixed it properly.

Maybe they have a poorly structured algorithm for the GUI/engine which makes it
too difficult to debug properly(?). If so then it needs to be redesigned.
WP

[the composition window glitch here at this forum continues to be an
annoyance...]



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