itertools::chunk_range

#include <itertools.hpp>

Synopsis

std::pair<std::ptrdiff_t, std::ptrdiff_t> chunk_range (std::ptrdiff_t first,

std::ptrdiff_t last,

long n_chunks,

long rank)

Parameters

• first First value of the range.

• last Last value of the range (excluded).

• n_chunks Number of chunks to divide the range into.

• rank Rank of the calling process.

Returns

Pair of indices specifying the first and last (excluded) value of the chunk assigned to the calling process.