SplitRanks - Maple Help
For the best experience, we recommend viewing online help using Google Chrome or Microsoft Edge.

Iterator

 SplitRanks
 compute the starting ranks and iterations suitable for parallelizing an iterator

 Calling Sequence SplitRanks(n, opts)

Parameters

 n - nonnegint; number to split opts - (optional) equation(s) of the form option = value; specify options for the SplitRanks command

Options

 • numtasks = posint
 Number of tasks. The default is the value of kernelopts(numcpus).

Description

 • The SplitRanks command computes the starting ranks and number of iterations needed to split an iterator into separate tasks.
 • It returns a list of two-element sublists. Each sublist consist of a rank and number of iterations. The number of sublists equals the value of the numtasks option.  The number of iterations differ by at most one.
 • The n parameter is the total number of iterations.
 • See the example section of RevolvingDoorCombination for a use of this procedure to parallelize a search.

Examples

 > $\mathrm{with}\left(\mathrm{Iterator}\right):$

 > $\mathrm{SplitRanks}\left(102,\mathrm{numtasks}=4\right)$
 $\left[\left[{1}{,}{26}\right]{,}\left[{27}{,}{26}\right]{,}\left[{53}{,}{25}\right]{,}\left[{78}{,}{25}\right]\right]$ (1)