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read_input.f90
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read_input.f90
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!Crown Copyright 2012 AWE.
!
! This file is part of CloverLeaf.
!
! CloverLeaf is free software: you can redistribute it and/or modify it under
! the terms of the GNU General Public License as published by the
! Free Software Foundation, either version 3 of the License, or (at your option)
! any later version.
!
! CloverLeaf is distributed in the hope that it will be useful, but
! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
! FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
! details.
!
! You should have received a copy of the GNU General Public License along with
! CloverLeaf. If not, see http://www.gnu.org/licenses/.
!> @brief Reads the user input
!> @author Wayne Gaudin
!> @details Reads and parses the user input from the processed file and sets
!> the variables used in the generation phase. Default values are also set
!> here.
SUBROUTINE read_input()
USE clover_module
USE parse_module
USE report_module
IMPLICIT NONE
INTEGER :: state,stat,state_max,n
REAL(KIND=8) :: dx,dy
CHARACTER(LEN=500) :: word
test_problem=0
state_max=0
grid%xmin= 0.0
grid%ymin= 0.0
grid%xmax=100.0
grid%ymax=100.0
grid%x_cells=10
grid%y_cells=10
end_time=10.0
end_step=g_ibig
complete=.FALSE.
visit_frequency=0
summary_frequency=10
dtinit=0.1
dtmax=1.0
dtmin=0.0000001
dtrise=1.5
dtc_safe=0.7
dtu_safe=0.5
dtv_safe=0.5
dtdiv_safe=0.7
use_fortran_kernels=.TRUE.
use_C_kernels=.FALSE.
use_OA_kernels=.FALSE.
profiler_on=.FALSE.
profiler%timestep=0.0
profiler%acceleration=0.0
profiler%PdV=0.0
profiler%cell_advection=0.0
profiler%mom_advection=0.0
profiler%viscosity=0.0
profiler%ideal_gas=0.0
profiler%visit=0.0
profiler%summary=0.0
profiler%reset=0.0
profiler%revert=0.0
profiler%flux=0.0
profiler%halo_exchange=0.0
IF(parallel%boss)WRITE(g_out,*) 'Reading input file'
IF(parallel%boss)WRITE(g_out,*)
stat=parse_init(g_in,'*clover')
DO
stat=parse_getline(dummy)
IF (stat.ne.0) exit
DO
word=parse_getword(.FALSE.)
IF(word.EQ.'')EXIT
IF (word.EQ.'state') THEN
state_max=MAX(state_max,parse_getival(parse_getword(.TRUE.)))
EXIT
ENDIF
ENDDO
ENDDO
number_of_states=state_max
IF(number_of_states.LT.1) CALL report_error('read_input','No states defined.')
stat=parse_init(g_in,'*clover')
ALLOCATE(states(number_of_states))
states(:)%defined=.FALSE.
states(:)%energy=0.0
states(:)%density=0.0
states(:)%xvel=0.0
states(:)%yvel=0.0
DO
stat=parse_getline(dummy)
IF(stat.NE.0)EXIT
DO
word=parse_getword(.FALSE.)
IF(word.EQ.'')EXIT
SELECT CASE(word)
CASE('initial_timestep')
dtinit=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'initial_timestep ',dtinit
CASE('max_timestep')
dtmax=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'max_timestep',dtinit
CASE('timestep_rise')
dtrise=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'timestep_rise',dtrise
CASE('end_time')
end_time=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'end_time',end_time
CASE('end_step')
end_step=parse_getival(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,i12)")'end_step',end_step
CASE('xmin')
grid%xmin=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'xmin',grid%xmin
CASE('xmax')
grid%xmax=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'xmax',grid%xmax
CASE('ymin')
grid%ymin=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'ymin',grid%ymin
CASE('ymax')
grid%ymax=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'ymax',grid%ymax
CASE('x_cells')
grid%x_cells=parse_getival(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,i12)")'x_cells',grid%x_cells
CASE('y_cells')
grid%y_cells=parse_getival(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,i12)")'y_cells',grid%y_cells
CASE('visit_frequency')
visit_frequency=parse_getival(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,i12)")'visit_frequency',visit_frequency
CASE('summary_frequency')
summary_frequency=parse_getival(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,i12)")'summary_frequency',summary_frequency
CASE('use_fortran_kernels')
use_fortran_kernels=.TRUE.
use_C_kernels=.FALSE.
use_OA_kernels=.FALSE.
CASE('use_c_kernels')
use_fortran_kernels=.FALSE.
use_C_kernels=.TRUE.
use_OA_kernels=.FALSE.
CASE('use_oa_kernels')
use_fortran_kernels=.FALSE.
use_C_kernels=.FALSE.
use_OA_kernels=.TRUE.
CASE('profiler_on')
profiler_on=.TRUE.
IF(parallel%boss)WRITE(g_out,"(1x,a25)")'Profiler on'
CASE('test_problem')
test_problem=parse_getival(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,i12)")'test_problem',test_problem
CASE('state')
state=parse_getival(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,*)'Reading specification for state ',state
IF (states(state)%defined) CALL report_error('read_input','State defined twice.')
IF(parallel%boss) WRITE(g_out,*)
states(state)%defined=.TRUE.
DO
word=parse_getword(.FALSE.)
IF(word.EQ.'') EXIT
SELECT CASE(word)
CASE('xvel')
states(state)%xvel=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'xvel ',states(state)%xvel
CASE('yvel')
states(state)%yvel=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'yvel ',states(state)%yvel
CASE('xmin')
states(state)%xmin=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'state xmin ',states(state)%xmin
CASE('ymin')
states(state)%ymin=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'state ymin ',states(state)%ymin
CASE('xmax')
states(state)%xmax=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'state xmax ',states(state)%xmax
CASE('ymax')
states(state)%ymax=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'state ymax ',states(state)%ymax
CASE('radius')
states(state)%radius=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'state radius ',states(state)%radius
CASE('density')
states(state)%density=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'state density ',states(state)%density
CASE('energy')
states(state)%energy=parse_getrval(parse_getword(.TRUE.))
IF(parallel%boss)WRITE(g_out,"(1x,a25,e12.4)")'state energy ',states(state)%energy
CASE('geometry')
word=TRIM(parse_getword(.TRUE.))
SELECT CASE(word)
CASE("rectangle")
states(state)%geometry=g_rect
IF(parallel%boss)WRITE(g_out,"(1x,a26)")'state geometry rectangular'
CASE("circle")
states(state)%geometry=g_circ
IF(parallel%boss)WRITE(g_out,"(1x,a25)")'state geometry circular'
CASE("point")
states(state)%geometry=g_point
IF(parallel%boss)WRITE(g_out,"(1x,a25)")'state geometry point'
END SELECT
END SELECT
ENDDO
IF(parallel%boss) WRITE(g_out,*)
END SELECT
ENDDO
ENDDO
IF(parallel%boss) THEN
WRITE(g_out,*)
IF(use_fortran_kernels) THEN
WRITE(g_out,"(1x,a25)")'Using Fortran Kernels'
ELSEIF(use_c_kernels) THEN
WRITE(g_out,"(1x,a25)")'Using C Kernels'
ELSEIF(use_oa_kernels) THEN
WRITE(g_out,"(1x,a25)")'Using OpenAcc Kernels'
ENDIF
WRITE(g_out,*)
WRITE(g_out,*) 'Input read finished.'
WRITE(g_out,*)
ENDIF
! If a state boundary falls exactly on a cell boundary then round off can
! cause the state to be put one cell further that expected. This is compiler
! /system dependent. To avoid this, a state boundary is reduced/increased by a 100th
! of a cell width so it lies well with in the intended cell.
! Because a cell is either full or empty of a specified state, this small
! modification to the state extents does not change the answers.
dx=(grid%xmax-grid%xmin)/float(grid%x_cells)
dy=(grid%ymax-grid%ymin)/float(grid%y_cells)
DO n=2,number_of_states
states(n)%xmin=states(n)%xmin+(dx/100.0)
states(n)%ymin=states(n)%ymin+(dy/100.0)
states(n)%xmax=states(n)%xmax-(dx/100.0)
states(n)%ymax=states(n)%ymax-(dy/100.0)
ENDDO
END SUBROUTINE read_input