Reads input files, loads initial conditions and grid data, and orchestrates solver initialization and finalization. More...

Functions/Subroutines
impure subroutine, public	s_read_data_files (q_cons_vf)
	Read data files. Dispatch subroutine that replaces procedure pointer.
impure subroutine, public	s_read_input_file
	Verify the input file exists and read it.
impure subroutine, public	s_check_input_file
	Validate that all user-provided inputs form a consistent simulation configuration.
impure subroutine, public	s_read_serial_data_files (q_cons_vf)
	Read serial initial condition and grid data files and compute cell-width distributions.
impure subroutine, public	s_read_parallel_data_files (q_cons_vf)
	Read parallel initial condition and grid data files via MPI I/O.
impure subroutine	s_check_restart_file_size (ifile, file_loc, expected_bytes)
	Abort if an open restart file holds fewer bytes than are about to be read from it, as a job killed while writing it leaves. MPI reads past the end return short without an error, so the missing tail would come back as garbage.
subroutine, public	s_initialize_internal_energy_equations (v_vf)
	Initialize internal-energy equations from phase mass, mixture momentum, and total energy.
impure subroutine, public	s_perform_time_step (t_step, time_avg)
	Advance the simulation by one time step, handling CFL-based dt and time-stepper dispatch.
impure subroutine, public	s_save_performance_metrics (time_avg, time_final, io_time_avg, io_time_final, proc_time, io_proc_time, file_exists)
	Collect per-process wall-clock times and write aggregate performance metrics to file.
impure subroutine, public	s_save_data (t_step, start, finish, io_time_avg, nt)
	Save conservative variable data to disk at the current time step.
impure subroutine, public	s_initialize_modules
	Initialize all simulation sub-modules in the required dependency order.
impure subroutine, public	s_initialize_mpi_domain
	Set up the MPI execution environment, bind GPUs, and decompose the computational domain.
subroutine, public	s_initialize_gpu_vars
	Transfer initial conservative variable and model parameter data to the GPU device.
impure subroutine, public	s_finalize_modules
	Finalize and deallocate all simulation sub-modules in reverse initialization order.
subroutine	s_assign_particle_cloud_ib_defaults (cloud_ib_idx, ib_patch)
	Fills the properties of a generated particle-cloud IB that the IB state file does not carry (geometry, mass, moving_ibm, inert surface, identity rotation matrix, zeroed step state). This is the only place they are set - pre_process (s_add_cloud_particle) generates only position, kinematics and radius. cloud_ib_idx is the global patch id minus the number of namelist patches; pre_process numbers particles cloud by cloud.
impure subroutine	s_read_ib_restart_data (t_step)
	Loads the IBs this rank owns from the IB state file for t_step into patch_ib(1:num_ibs), all of which are local. Under file_per_process the rank reads only its own restart_data/lustre_<t_step>/ib_state_<t_step>_<rank>.dat, which holds exactly its IBs; otherwise every rank reads every record of restart_data/ib_state_<t_step>.dat and keeps the ones f_local_rank_owns_location assigns it. Records carry kinematics, position and radius; every other property comes from the namelist patch (global id <= num_ibs) or the particle cloud the IB was generated from. Written by pre_process at t_step = 0 (src/pre_process/m_data_output.fpp:s_write_ib_state_0_file) and by s_write_ib_state_file on later steps.
subroutine	s_build_ib_neighborhood ()
	Completes this rank's IB neighborhood once s_read_ib_restart_data has loaded only the IBs it owns: every rank sends its own IBs to, and receives the owned IBs of, each distinct rank in ib_neighbor_ranks, appending them to patch_ib after its own.
subroutine	s_compute_ib_neighbor_ranks ()
	Build ib_neighbor_ranks(-1:1,-1:1,-1:1): MPI ranks of all neighbor domains. Uses two rounds of MPI_SENDRECV cascades - face neighbors are known from bc_*, edge neighbors are obtained in round 1, and (3D) corner neighbors in round 2.
subroutine	s_get_neighbor_bounds ()

Variables
type(scalar_field), dimension(:), allocatable	q_cons_temp
real(wp)	dt_init

Detailed Description

Reads input files, loads initial conditions and grid data, and orchestrates solver initialization and finalization.

Function/Subroutine Documentation

◆ s_assign_particle_cloud_ib_defaults()

subroutine m_start_up::s_assign_particle_cloud_ib_defaults	(	integer, intent(in)	cloud_ib_idx,
		type(ib_patch_parameters), intent(inout)	ib_patch )

Fills the properties of a generated particle-cloud IB that the IB state file does not carry (geometry, mass, moving_ibm, inert surface, identity rotation matrix, zeroed step state). This is the only place they are set - pre_process (s_add_cloud_particle) generates only position, kinematics and radius. cloud_ib_idx is the global patch id minus the number of namelist patches; pre_process numbers particles cloud by cloud.

Definition at line 2083 of file m_start_up.fpp.f90.