triqs::mc_tools::mc_generic::accumulate

#include <triqs/mc_tools/mc_generic.hpp>

Synopsis

int accumulate (int64_t n_accumulation_cycles,

int64_t length_cycle,

std::function<bool ()> stop_callback,

communicator c = mpi::communicator{})

Accumulate/Measure

Parameters

• n_accumulation_cycles Number of QMC cycles in the accumulation (measures are done after each cycle).

  If negative, the accumulation is done until the stop_callback returns true or signal is received.

• length_cycle Number of QMC move attempts in one cycle

• stop_callback

  Callback function () -> bool. It is called after each cycle to and the computation stops when it returns true. Typically used to set up the time limit, cf doc.

Returns

0	if the computation has run until the end
1	if it has been stopped by stop_callback
2	if it has been stopped by receiving a signal