Add restartability to random sampling

defaults/random.defaults

@@ -36,3 +36,8 @@
 
       ! Force a fle sync every this many steps if this is > 0
       sync_freq = -1
+
+      ! Whether the code should be restartable
+      ! If true and bbq detects the output files then we will append new rows to the output
+      ! instead of creating new files
+      restartable = .false.

src/ctrls.f90

@@ -127,7 +127,7 @@ subroutine load_random_inputs(inlist, options, ierr)
                         log_rho_min,  log_rho_max, log_xa_min, log_xa_max, &
                         neut_prot_limit_frac, &
                         output_starting_filename, output_ending_filename,&
-                        num_samples, seed, sync_freq
+                        num_samples, seed, sync_freq, restartable
 
 
       include '../defaults/random.defaults'
@@ -151,6 +151,7 @@ subroutine load_random_inputs(inlist, options, ierr)
       options% num_samples = num_samples
       options% seed = seed
       options% sync_freq = sync_freq
+      options% restartable = restartable
 
    end subroutine load_random_inputs
 

src/lib_hydrostatic.f90

@@ -35,6 +35,7 @@ subroutine run_hydrostatic(bbq_in)
 
       do j=1,num_lines
          in(j)% xa = out% xa
+        ! write(*,*) in(j)% xa
          call do_hydrostatic_burn(in(j), out, bbq_in, total_time, fout, ierr )
          if(ierr/=0) return
       end do

src/lib_random.f90

@@ -20,7 +20,8 @@ subroutine run_random(bbq_in)
 
       real(dp) :: r,sum
       integer :: total, ierr, n, species, j, fin, i
-      integer :: seed_val, fout
+      integer :: seed_val, fout, fseed, iostat
+      logical :: exists
 
       call load_random_inputs(bbq_in% inlist, random_in, ierr)
 
@@ -30,21 +31,32 @@ subroutine run_random(bbq_in)
          call get_seed_for_random(seed_val)
       end if
 
-      ! Burn in random number generator
-      do i=1,10
-         r = get_dp_uniform_01(seed_val)
-      end do
+      total = 0
+
+      if(random_in% restartable) then
+         inquire(file=random_in% output_starting_filename,exist=exists)
+         if(exists) then
+            ! Count lines to adjust total
+            open(newunit=fin,file=random_in% output_starting_filename,status='old', action='read')
+            do 
+               read(fin,*,iostat=iostat) 
+               total=total+1
+               if(IS_IOSTAT_END(iostat)) exit
+            end do
+            close(fin)
+            total=total-2
+         end if
+      end if
+
 
       call random_setup(bbq_in, random_in)
 
-      total = 0
       species = bbq_in% state% species
       allocate(in% xa(species))
 
       open(newunit=fin,file=random_in% output_starting_filename,status='old', position="append", action="write")
       open(newunit=fout,file=random_in% output_ending_filename,status='old', position="append", action="write")
 
-
       do 
          if(random_in% num_samples>0 .and. total>= random_in% num_samples) exit
          total = total+1
@@ -88,7 +100,6 @@ subroutine run_random(bbq_in)
 
             end if
          end if
-
       end do
 
    end subroutine run_random
@@ -106,21 +117,26 @@ subroutine random_setup(bbq_in, random_in)
       type(random_t) :: random_in
       integer :: fin, fout
       integer :: fisos, species
+      logical :: exists
 
-      open(newunit=fin,file=random_in% output_starting_filename,status='replace',action='write')
-      open(newunit=fout,file=random_in% output_ending_filename,status='replace',action='write')
+      inquire(file=random_in% output_starting_filename,exist=exists)
 
-      species = bbq_in% state% species
+      if(.not. exists .or. .not. random_in% restartable) then
+         open(newunit=fin,file=random_in% output_starting_filename,status='replace',action='write')
+         open(newunit=fout,file=random_in% output_ending_filename,status='replace',action='write')
+
+         species = bbq_in% state% species
 
-      !Write header
-      write(fout,'(A)',advance='no') '# id eps_nuc eps_neu '
-      call write_iso_names(bbq_in, fout)
-      close(fout)
+         !Write header
+         write(fout,'(A)',advance='no') '# id eps_nuc eps_neu '
+         call write_iso_names(bbq_in, fout)
+         close(fout)
 
-      !Write header
-      write(fin,'(A)',advance='no') '# id dt logt logrho '
-      call write_iso_names(bbq_in, fin)
-      close(fin)
+         !Write header
+         write(fin,'(A)',advance='no') '# id dt logt logrho '
+         call write_iso_names(bbq_in, fin)
+         close(fin)
+      end if
 
 
    end subroutine random_setup

src/private/random.inc

@@ -5,3 +5,4 @@ real(dp) :: log_xa_min, log_xa_max
 real(dp) :: neut_prot_limit_frac
 character(len=strlen) :: output_starting_filename,output_ending_filename
 integer :: num_samples, seed, sync_freq
+logical :: restartable