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raggiparallelo.f95
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program raggi
!****************************************
!* Simulation of cosmic rays directions *
!* using MonteCarlo's methods *
!* Results compared with *
!* real data collected in Turin *
!* on December 2012. *
!* Program written on September 2013. *
!****************************************
USE omp_lib !Libreries
USE par_zig_mod
implicit none
real :: u, v !random numbers
integer :: n, h, i, j, seedi
real :: seedr, start, finish
real:: s, probabilita, z !Private
integer, parameter :: m = 960, hit = 750000 !Points
real, allocatable, dimension(:,:) :: theta, phi !Angles
real, parameter :: pi = 4*atan(1.), e = 2.71828182846, Re = 6371.0, Yatm = 9
!constant
Logical, allocatable, Dimension (:,:) :: mont, get
character*(1000):: fileposition, filenumber, string2, string3, ext
integer :: len2, len3, status2, status3
character*(1000):: filename
!variables for random
integer, parameter :: grainsize = 32
real(4):: r
real:: time
integer :: len, status, kpar, npar
integer, allocatable :: seed(:)
character*(8) :: str
logical:: buffer
!example of command line ./raggi 8 Files 1 program threads folder filenumber
n = hit !inizialize n
!To submit, comment next two lines
WRITE(*,*) "How many points?"
READ(*,fmt = '(I15)') n
allocate (theta(m, n)) !allocate array
allocate (phi(m, n))
allocate (mont(m, n))
allocate (get(m, n))
!$ start = omp_get_wtime() !Start time
kpar = 0 !Inizialize kpar for non-parallell machines
!Random
call random_seed()
call get_command_argument(1, str, len, status)
read(str,'(i2)') npar
allocate(seed(npar+1))
!$ call omp_set_num_threads(npar)
call cpu_time(time)
seedr = time*10000
seedi = INT(seedr)
call srand(seedi)
DO h = 1,npar+1
r = rand()
seed(h) = r*123+1
ENDDO
call par_zigset(npar+1, seed, grainsize)
!end Random
call get_command_argument(2, string2, len2, status2) !Read from command line
!file position without / (ex. for /Files/file.csv write Files)
read(string2,'(A)') fileposition
call get_command_argument(3, string3, len3, status3) !read file number (ex.
!uniform1.csv uniform2.csv
read(string3,'(A)') filenumber
ext = '.csv' !Set file extension
filename = fileposition(:len2)//'/uniform-'//filenumber(:len3)//ext !File opening
open(unit = 1, FILE = filename, STATUS = 'REPLACE')
filename = fileposition(:len2)//'/atmosphere-'//filenumber(:len3)//ext
open(unit = 2, FILE = filename, STATUS = 'REPLACE')
filename = fileposition(:len2)//'/mountain-'//filenumber(:len3)//ext
open(unit = 3, FILE = filename, STATUS = 'REPLACE')
filename = fileposition(:len2)//'/real-'//filenumber(:len3)//ext
open(unit = 4, FILE = filename, STATUS = 'REPLACE')
WRITE(*,*) "Ready"
!$OMP PARALLEL
!$OMP DO PRIVATE(kpar, u, v, j) !Uniform
DO i = 1,m
!$ kpar = omp_get_thread_num()+1
DO j = 1,n
u = par_uni(kpar)
v = par_uni(kpar)
theta(i, j) = ABS(acos(v)) !generate theta, abs is for semisphere
phi(i, j) = 2*pi*u
END DO
END DO
!$OMP END DO
!$OMP SINGLE !Write data
DO i = 1,m
DO j = 1,n
WRITE(1,fmt = '(F5.3,A1,F5.3,I2)') theta(i, j),",", phi(i, j)
get(i,j) = .false.
END DO
END DO
!$OMP END SINGLE
!$OMP SINGLE
WRITE(*,*) "Ended uniform"
!$OMP END SINGLE
!$OMP DO PRIVATE(kpar, j, z, s, probabilita) !With atmosphere
DO i = 1,m
!$ kpar = omp_get_thread_num()+1
DO j = 1,n
z = par_uni(kpar)
s = SQRT((Re*cos(theta(i, j)))**2+2*Re*Yatm+Yatm**2)-Re*cos(theta(i, j)) !Atmosphere's width
probabilita = Prob(s)
IF (z > probabilita) get(i, j) = .true.
END DO
END DO
!$OMP END DO
!$OMP SINGLE !Write data
DO i = 1,m
DO j = 1,n
IF (get(i, j)) WRITE(2,fmt = '(F5.3, A1, F5.3)') theta(i, j), "," , phi(i, j)
get(i,j) = .false.
END DO
END DO
!$OMP END SINGLE
!$OMP SINGLE
WRITE(*,*) "Ended atmosphere"
!$OMP END SINGLE
buffer=.FALSE.
!$OMP DO PRIVATE(kpar, j) !With mountain
DO i = 1,m
!$ kpar = omp_get_thread_num()+1
DO j = 1,n
buffer = (((theta(i,j)>1.45).AND.((phi(i,j)>3.92).AND.(phi(i,j)<6.28))))
mont(i, j) = ((buffer).OR.((theta(i,j)>1.23).AND.((phi(i,j)>0.52).AND.(phi(i,j)<3.14))))
get(i, j) = .NOT.mont(i, j)
END DO
END DO
!$OMP END DO
!$OMP SINGLE !Write data
DO i = 1,m
DO j = 1,n
IF (get(i, j)) WRITE(3,fmt = '(F5.3,A1,F5.3)') theta(i, j),",", phi(i, j)
get(i,j) = .false.
END DO
END DO
!$OMP END SINGLE
!$OMP SINGLE
WRITE(*,*) "Ended mountain"
!$OMP END SINGLE
!$OMP DO PRIVATE(kpar, j, z, s, probabilita) !With mountain and atmosphere
DO i = 1,m
!$ kpar = omp_get_thread_num()+1
DO j = 1,n
z = par_uni(kpar)
s = SQRT((Re*cos(theta(i, j)))**2+2*Re*Yatm+Yatm**2)-Re*cos(theta(i, j)) !Atmosphere's width
probabilita = Prob(s)
IF (z > probabilita) get(i, j) = .true.
IF (mont(i,j)) get(i,j) = .false.
END DO
END DO
!$OMP END DO
!$OMP SINGLE !Write data
DO i = 1,m
DO j = 1,n
IF (get(i, j)) WRITE(4, fmt = '(F5.3,A1,F5.3)') theta(i, j), phi(i, j)
END DO
END DO
!$OMP END SINGLE
!$OMP END PARALLEL
close(unit = 1) !File closing
close(unit = 2)
close(unit = 3)
close(unit = 4)
!$ finish = omp_get_wtime() !Finish time
Write(*,fmt = '(A8, F10.2, A8)') "Ended: ", abs(finish-start), " seconds"
CONTAINS
real function Prob(esse)
real:: esse
real, parameter:: a = 1.2 !Factor to try
Prob = 1 - e**(-a*esse)
end function
end program raggi
!********************************************************************************
!* Copyright (C) 2013 Filippo *
!* *
!* This program 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. *
!* *
!* This program 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 this program. If not, see <http://www.gnu.org/licenses/>. *
!********************************************************************************