Kernel Manager

The KernelManager in NEST manages the initialization and finalization of all simulation managers in a specific order to resolve dependencies and ensure proper setup. It acts as a singleton, providing centralized control over configuration, status queries, and simulation resets. Additionally, it tracks a fingerprint to detect changes and maintain consistency across multiple runs.

class KernelManager

Public Functions

void initialize()

Prepare kernel for operation.

This method calls the initialization methods of the specific managers in the proper order.

See also

finalize(), reset()

void finalize()

Take down kernel after operation.

This method calls the finalization methods of the specific managers in the proper order, i.e., inverse to initialize().

See also

initialize(), reset()

void reset()

Reset kernel.

Resets the kernel by finalizing and initializing all managers.

See also

initialize(), finalize()

void change_number_of_threads(size_t new_num_threads)

Change number of threads.

Set the new number of threads on all managers by calling change_number_of_threads() on each of them.

inline bool is_initialized() const

Returns true if kernel is initialized.

void write_to_dump(const std::string &msg)

Write data to file per rank and thread.

For use with FULL_LOGGING.

Note

This method has a omp critical section to avoid write-collisions from threads.

inline Stopwatch<StopwatchGranularity::Detailed, StopwatchParallelism::Threaded> &get_omp_synchronization_construction_stopwatch()

Get the stopwatch to measure the time each thread is idle during network construction.

inline Stopwatch<StopwatchGranularity::Detailed, StopwatchParallelism::Threaded> &get_omp_synchronization_simulation_stopwatch()

Get the stopwatch to measure the time each thread is idle during simulation.

Public Static Functions

static void create_kernel_manager()

Create/destroy and access the KernelManager singleton.