On 23.04.2020 13:12, Luboš Luňák wrote: > On Thursday 23 of April 2020, Stephen Fanning wrote: >> As for the processing itself, I remain unclear about how Calc allocates >> tasks to threads. Can we give the user any general advice on how he could >> structure his spreadsheet to gain the maximum performance benefits from the >> availability of multiple cores? Or maybe there are ways to organise a >> spreadsheet that will frustrate Calc's attempts to multi-thread, which we >> ought to advise against? > > Technically threads are generally used only for formula groups, which are a > sufficient number of adjacent cells in a column that use the same formula > (and get different results because of relative cell addressing). In UI terms, > write e.g. "=A1*2" to B1, grab the bottom-right corner of the cell and extend > down. But it's implementated this way because that's usually how large > spreadsheets are created. So I think it's a needless complication to be > specific about this. > IMO it's still useful to mention that the optimization is column-based. Because many people don't realize that row-based layout is potentially less efficient. This would be beneficial to those who don't create spreadsheets according to how it's "usually" done. -- Best regards, Mike Kaganski
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