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From Rob Weir <robw...@apache.org>
Subject Re: Slooooow spreadsheet documents
Date Mon, 10 Oct 2011 23:28:44 GMT
On Mon, Oct 10, 2011 at 5:35 PM, Joost Andrae <Joost.Andrae@gmx.de> wrote:
> Hi Rob,
>
> just a remark:
>
> In my private opinion it would make more sense to invest resources into
> impementing a formula reference which points to expanded formula cells
> (/edit/fill) like it is already done for formatting templates within the
> sheet.

This is probably true.  But this isn't my time investment ;-)  It is
someone that has a tool for analyzing code and refactoring it for
parallel computation.  They sounded willing to contribute their
changes back to AOOo. That's why I'm looking for examples of slow
spreadsheets that are computation-bound rather than memory bound, even
thought that might not be the typical case.

> A slow sheet doesn't necessarily mean that calculation is slow. Better
> resolving references within the sheet (in my opinion) has more potential to
> make such documents faster. I believe by using formula references the
> documents' memory footprint could be lowered as well because a formula
> reference doesn't cost as much as a cell content containing a formula and
> containing edit engine data.
>
> At one of the OOo conferences I vaguely remember there was a university
> project that already parallelized computation of Calc sheets. Unfortunately
> I cannot remember the project/university name anymore. Probably having a
> look at the conference session drafts might give us some more insight.
>
>>
>> I was talking to someone earlier who had ideas for speeding up
>> spreadsheet computation through parallelization, and was looking for
>> some notoriously slow test documents.
>
> Kind regards, Joost
>
>

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