On 18 September 2007 08:26, Andreas Maunz wrote:
> > The situation smells like undefined behaviour to me; if you're using
> > an uninitialised variable or in some other way depending on random
> > memory contents, that could trigger the different behaviour in your
> > program. Your description of the problem is a bit vague, but by
> > "more chemical information", I'm guessing the library is either
> > returning more records, or more data fields in each record.
>
> The output consists mainly of chemical compounds. Every compound has a
> score attached (a floating point number). When run with make, lower
> scores are attached and thus more chunks fall below a predefined
> threshold (0.3) which results in less output. The score is a measure of
> similarity between the compounds and one specific compound, called the
> query compound. For similarity computation the already mentioned
> libraries are accessed. It really seems that is has something to do with
> program internal computation and/or the way libraries are accessed.
>
> The manual results seem to make much more sense, so in the meantime I
> have decided to refer to them as "correct".
Here's a thought: does it still happen if you compile your program with -O0,
i.e. no optimisation?
cheers,
DaveK
--
Can't think of a witty .sigline today....
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