simple_partitioner¶
[algorithms.simple_partitioner]
Specifies that a parallel loop should recursively split its range until it cannot be further subdivided.
A simple_partitioner specifies that a loop template should recursively divide its range
until for each subrange r, the condition !r.is_divisible() holds.
This is the default behavior of the loop templates that take a range argument.
The simple_partitioner class satisfies the CopyConstructibe requirement from the ISO C++ [utility.arg.requirements] section.
Tip
When using simple_partitioner and a blocked_range for a parallel loop,
make sure to specify an appropriate grain size for the blocked_range.
The default grain size is 1, which may make the subranges much too small for efficient execution.
// Defined in header <oneapi/tbb/partitioner.h>
namespace oneapi {
namespace tbb {
class simple_partitioner {
public:
simple_partitioner() = default;
~simple_partitioner() = default;
};
} // namespace tbb
} // namespace oneapi
See also: