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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.

 Luboš Luňák

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