m_mpi_common.fpp.f90 File Reference

Functions/Subroutines
program	__m_mpi_common_fpp_f90__
subroutine	s_mpi_initialize ()
	The subroutine initializes the MPI execution environment and queries both the number of processors which will be available for the job and the local processor rank.
subroutine	s_initialize_mpi_data (q_cons_vf, ib_markers)
subroutine	mpi_bcast_time_step_values (proc_time, time_avg)
subroutine	s_mpi_reduce_stability_criteria_extrema (icfl_max_loc, vcfl_max_loc, ccfl_max_loc, rc_min_loc, icfl_max_glb, vcfl_max_glb, ccfl_max_glb, rc_min_glb)
	The goal of this subroutine is to determine the global extrema of the stability criteria in the computational domain. This is performed by sifting through the local extrema of each stability criterion. Note that each of the local extrema is from a single process, within its assigned section of the computational domain. Finally, note that the global extrema values are only bookkeept on the rank 0 processor.
subroutine	s_mpi_allreduce_sum (var_loc, var_glb)
	The following subroutine takes the input local variable from all processors and reduces to the sum of all values. The reduced variable is recorded back onto the original local variable on each processor.
subroutine	s_mpi_allreduce_min (var_loc, var_glb)
	The following subroutine takes the input local variable from all processors and reduces to the minimum of all values. The reduced variable is recorded back onto the original local variable on each processor.
subroutine	s_mpi_allreduce_max (var_loc, var_glb)
	The following subroutine takes the input local variable from all processors and reduces to the maximum of all values. The reduced variable is recorded back onto the original local variable on each processor.
subroutine	s_mpi_reduce_min (var_loc)
	The following subroutine takes the inputted variable and determines its minimum value on the entire computational domain. The result is stored back into inputted variable.
subroutine	s_mpi_reduce_maxloc (var_loc)
	The following subroutine takes the first element of the 2-element inputted variable and determines its maximum value on the entire computational domain. The result is stored back into the first element of the variable while the rank of the processor that is in charge of the sub- domain containing the maximum is stored into the second element of the variable.
subroutine	s_mpi_abort (prnt)
	The subroutine terminates the MPI execution environment.
subroutine	s_mpi_barrier ()
	Halts all processes until all have reached barrier.
subroutine	s_mpi_finalize ()
	The subroutine finalizes the MPI execution environment.

Function/Subroutine Documentation

__m_mpi_common_fpp_f90__()

program __m_mpi_common_fpp_f90__

mpi_bcast_time_step_values()

subroutine __m_mpi_common_fpp_f90__::mpi_bcast_time_step_values ( real(kind(0d0)), dimension(0:num_procs - 1), intent(inout) proc_time, real(kind(0d0)), intent(inout) time_avg )

private

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s_initialize_mpi_data()

subroutine __m_mpi_common_fpp_f90__::s_initialize_mpi_data ( type(scalar_field), dimension(sys_size), intent(in) q_cons_vf, type(integer_field), intent(in), optional ib_markers )

private

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s_mpi_abort()

subroutine __m_mpi_common_fpp_f90__::s_mpi_abort ( character(len=*), intent(in), optional prnt )

private

The subroutine terminates the MPI execution environment.

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s_mpi_allreduce_max()

subroutine __m_mpi_common_fpp_f90__::s_mpi_allreduce_max ( real(kind(0d0)), intent(in) var_loc, real(kind(0d0)), intent(out) var_glb )

private

The following subroutine takes the input local variable from all processors and reduces to the maximum of all values. The reduced variable is recorded back onto the original local variable on each processor.

Parameters

var_loc	Some variable containing the local value which should be reduced amongst all the processors in the communicator.
var_glb	The globally reduced value

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s_mpi_allreduce_min()

subroutine __m_mpi_common_fpp_f90__::s_mpi_allreduce_min ( real(kind(0d0)), intent(in) var_loc, real(kind(0d0)), intent(out) var_glb )

private

The following subroutine takes the input local variable from all processors and reduces to the minimum of all values. The reduced variable is recorded back onto the original local variable on each processor.

Parameters

var_loc	Some variable containing the local value which should be reduced amongst all the processors in the communicator.
var_glb	The globally reduced value

s_mpi_allreduce_sum()

subroutine __m_mpi_common_fpp_f90__::s_mpi_allreduce_sum ( real(kind(0d0)), intent(in) var_loc, real(kind(0d0)), intent(out) var_glb )

private

The following subroutine takes the input local variable from all processors and reduces to the sum of all values. The reduced variable is recorded back onto the original local variable on each processor.

Parameters

var_loc	Some variable containing the local value which should be reduced amongst all the processors in the communicator.
var_glb	The globally reduced value

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s_mpi_barrier()

subroutine __m_mpi_common_fpp_f90__::s_mpi_barrier

private

Halts all processes until all have reached barrier.

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s_mpi_finalize()

subroutine __m_mpi_common_fpp_f90__::s_mpi_finalize

private

The subroutine finalizes the MPI execution environment.

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s_mpi_initialize()

subroutine __m_mpi_common_fpp_f90__::s_mpi_initialize

private

The subroutine initializes the MPI execution environment and queries both the number of processors which will be available for the job and the local processor rank.

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s_mpi_reduce_maxloc()

subroutine __m_mpi_common_fpp_f90__::s_mpi_reduce_maxloc ( real(kind(0d0)), dimension(2), intent(inout) var_loc )

private

The following subroutine takes the first element of the 2-element inputted variable and determines its maximum value on the entire computational domain. The result is stored back into the first element of the variable while the rank of the processor that is in charge of the sub- domain containing the maximum is stored into the second element of the variable.

Parameters

var_loc

On input, this variable holds the local value and processor rank, which are to be reduced among all the processors in communicator. On output, this variable holds the maximum value, reduced amongst all of the local values, and the process rank to which the value belongs.

s_mpi_reduce_min()

subroutine __m_mpi_common_fpp_f90__::s_mpi_reduce_min ( real(kind(0d0)), intent(inout) var_loc )

private

The following subroutine takes the inputted variable and determines its minimum value on the entire computational domain. The result is stored back into inputted variable.

Parameters

var_loc

holds the local value to be reduced among all the processors in communicator. On output, the variable holds the minimum value, reduced amongst all of the local values.

s_mpi_reduce_stability_criteria_extrema()

subroutine __m_mpi_common_fpp_f90__::s_mpi_reduce_stability_criteria_extrema ( real(kind(0d0)), intent(in) icfl_max_loc, real(kind(0d0)), intent(in) vcfl_max_loc, real(kind(0d0)), intent(in) ccfl_max_loc, real(kind(0d0)), intent(in) rc_min_loc, real(kind(0d0)), intent(out) icfl_max_glb, real(kind(0d0)), intent(out) vcfl_max_glb, real(kind(0d0)), intent(out) ccfl_max_glb, real(kind(0d0)), intent(out) rc_min_glb )

private

The goal of this subroutine is to determine the global extrema of the stability criteria in the computational domain. This is performed by sifting through the local extrema of each stability criterion. Note that each of the local extrema is from a single process, within its assigned section of the computational domain. Finally, note that the global extrema values are only bookkeept on the rank 0 processor.

Parameters

icfl_max_loc	Local maximum ICFL stability criterion
vcfl_max_loc	Local maximum VCFL stability criterion
Rc_min_loc	Local minimum Rc stability criterion
icfl_max_glb	Global maximum ICFL stability criterion
vcfl_max_glb	Global maximum VCFL stability criterion
Rc_min_glb	Global minimum Rc stability criterion

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