MFC
Exascale flow solver
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m_helper_basic.fpp.f90
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1# 1 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
2!>
3!! @file
4!! @brief Contains module m_helper_basic
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268
269! Caution:
270! This macro requires the use of a binding script to set CUDA_VISIBLE_DEVICES, such that we have one GPU device per MPI rank.
271! That's because for both cudaMemAdvise (preferred location) and cudaMemPrefetchAsync we use location = device_id = 0.
272! For an example see misc/nvidia_uvm/bind.sh.
273# 63 "/home/runner/work/MFC/MFC/src/common/include/macros.fpp"
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289# 6 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp" 2
290
291!> @brief Basic floating-point utilities: approximate equality, default detection, and coordinate bounds
292module m_helper_basic
293
294 use m_derived_types !< definitions of the derived types
295
296 implicit none
297
298 private;
299 public :: f_approx_equal, &
300 f_approx_in_array, &
301 f_is_default, &
302 f_all_default, &
303 f_is_integer, &
304 s_configure_coordinate_bounds, &
305 s_update_cell_bounds
306
307contains
308
309 !> This procedure checks if two floating point numbers of wp are within tolerance.
310 !! @param a First number.
311 !! @param b Second number.
312 !! @param tol_input Relative error (default = 1.e-10_wp).
313 !! @return Result of the comparison.
314 logical elemental function f_approx_equal(a, b, tol_input) result(res)
315
316# 31 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
317#if MFC_OpenACC
318# 31 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
319!$acc routine seq
320# 31 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
321#elif MFC_OpenMP
322# 31 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
323
324# 31 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
325
326# 31 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
327!$omp declare target device_type(any)
328# 31 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
329#endif
330 real(wp), intent(in) :: a, b
331 real(wp), optional, intent(in) :: tol_input
332 real(wp) :: tol
333
334 if (present(tol_input)) then
335 tol = tol_input
336 else
337 tol = 1.e-10_wp
338 end if
339
340 if (a == b) then
341 res = .true.
342 else if (a == 0._wp .or. b == 0._wp .or. (abs(a) + abs(b) < tiny(a))) then
343 res = (abs(a - b) < (tol*tiny(a)))
344 else
345 res = (abs(a - b)/min(abs(a) + abs(b), huge(a)) < tol)
346 end if
347 end function f_approx_equal
348
349 !> This procedure checks if the point numbers of wp belongs to another array are within tolerance.
350 !! @param a First number.
351 !! @param b Array that contains several point numbers.
352 !! @param tol_input Relative error (default = 1e-10_wp).
353 !! @return Result of the comparison.
354 logical function f_approx_in_array(a, b, tol_input) result(res)
355
356# 57 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
357#if MFC_OpenACC
358# 57 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
359!$acc routine seq
360# 57 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
361#elif MFC_OpenMP
362# 57 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
363
364# 57 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
365
366# 57 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
367!$omp declare target device_type(any)
368# 57 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
369#endif
370 real(wp), intent(in) :: a
371 real(wp), intent(in) :: b(:)
372 real(wp), optional, intent(in) :: tol_input
373 real(wp) :: tol
374 integer :: i
375
376 res = .false.
377
378 if (present(tol_input)) then
379 tol = tol_input
380 else
381 tol = 1e-10_wp
382 end if
383
384 do i = 1, size(b)
385 if (f_approx_equal(a, b(i), tol)) then
386 res = .true.
387 exit
388 end if
389 end do
390 end function f_approx_in_array
391
392 !> Checks if a real(wp) variable is of default value.
393 !! @param var Variable to check.
394 logical elemental function f_is_default(var) result(res)
395
396# 83 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
397#if MFC_OpenACC
398# 83 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
399!$acc routine seq
400# 83 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
401#elif MFC_OpenMP
402# 83 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
403
404# 83 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
405
406# 83 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
407!$omp declare target device_type(any)
408# 83 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
409#endif
410 real(wp), intent(in) :: var
411
412 res = f_approx_equal(var, dflt_real)
413 end function f_is_default
414
415 !> Checks if ALL elements of a real(wp) array are of default value.
416 !! @param var_array Array to check.
417 logical function f_all_default(var_array) result(res)
418 real(wp), intent(in) :: var_array(:)
419
420 res = all(f_is_default(var_array))
421
422 !logical :: res_array(size(var_array))
423 !integer :: i
424
425 ! do i = 1, size(var_array)
426 ! res_array(i) = f_is_default(var_array(i))
427 ! end do
428
429 ! res = all(res_array)
430 end function f_all_default
431
432 !> Checks if a real(wp) variable is an integer.
433 !! @param var Variable to check.
434 logical elemental function f_is_integer(var) result(res)
435
436# 109 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
437#if MFC_OpenACC
438# 109 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
439!$acc routine seq
440# 109 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
441#elif MFC_OpenMP
442# 109 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
443
444# 109 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
445
446# 109 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
447!$omp declare target device_type(any)
448# 109 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
449#endif
450 real(wp), intent(in) :: var
451
452 res = f_approx_equal(var, real(nint(var), wp))
453 end function f_is_integer
454
455 subroutine s_configure_coordinate_bounds(recon_type, weno_polyn, muscl_polyn, &
456 igr_order, buff_size, idwint, idwbuff, &
457 viscous, bubbles_lagrange, m, n, p, num_dims, igr, ib)
458
459 integer, intent(in) :: recon_type, weno_polyn, muscl_polyn
460 integer, intent(in) :: m, n, p, num_dims, igr_order
461 integer, intent(inout) :: buff_size
462 type(int_bounds_info), dimension(3), intent(inout) :: idwint, idwbuff
463 logical, intent(in) :: viscous, bubbles_lagrange
464 logical, intent(in) :: igr
465 logical, intent(in) :: ib
466
467 ! Determining the number of cells that are needed in order to store
468 ! sufficient boundary conditions data as to iterate the solution in
469 ! the physical computational domain from one time-step iteration to
470 ! the next one
471 if (igr) then
472 buff_size = (igr_order - 1)/2 + 2
473 elseif (recon_type == weno_type) then
474 if (viscous) then
475 buff_size = 2*weno_polyn + 2
476 else
477 buff_size = weno_polyn + 2
478 end if
479 elseif (recon_type == muscl_type) then
480 buff_size = muscl_polyn + 2
481 end if
482
483 ! Correction for smearing function in the lagrangian subgrid bubble model
484 if (bubbles_lagrange) then
485 buff_size = max(buff_size, 6)
486 end if
487
488 if (ib) then
489 buff_size = max(buff_size, 10)
490 end if
491
492 ! Configuring Coordinate Direction Indexes
493 idwint(1)%beg = 0; idwint(2)%beg = 0; idwint(3)%beg = 0
494 idwint(1)%end = m; idwint(2)%end = n; idwint(3)%end = p
495
496 idwbuff(1)%beg = -buff_size
497 if (num_dims > 1) then; idwbuff(2)%beg = -buff_size; else; idwbuff(2)%beg = 0; end if
498 if (num_dims > 2) then; idwbuff(3)%beg = -buff_size; else; idwbuff(3)%beg = 0; end if
499
500 idwbuff(1)%end = idwint(1)%end - idwbuff(1)%beg
501 idwbuff(2)%end = idwint(2)%end - idwbuff(2)%beg
502 idwbuff(3)%end = idwint(3)%end - idwbuff(3)%beg
503
504 end subroutine s_configure_coordinate_bounds
505
506 !> Updates the min and max number of cells in each set of axes
507 !! @param bounds Min ans max values to update
508 !! @param m Number of cells in x-axis
509 !! @param n Number of cells in y-axis
510 !! @param p Number of cells in z-axis
511 elemental subroutine s_update_cell_bounds(bounds, m, n, p)
512 type(cell_num_bounds), intent(out) :: bounds
513 integer, intent(in) :: m, n, p
514
515 bounds%mn_max = max(m, n)
516 bounds%np_max = max(n, p)
517 bounds%mp_max = max(m, p)
518 bounds%mnp_max = max(m, n, p)
519 bounds%mn_min = min(m, n)
520 bounds%np_min = min(n, p)
521 bounds%mp_min = min(m, p)
522 bounds%mnp_min = min(m, n, p)
523
524 end subroutine s_update_cell_bounds
525
526end module m_helper_basic
m_derived_types
Shared derived types for field data, patch geometry, bubble dynamics, and MPI I/O structures.
Definition m_derived_types.fpp.f90:292
m_helper_basic
Basic floating-point utilities: approximate equality, default detection, and coordinate bounds.
Definition m_helper_basic.fpp.f90:292
m_helper_basic::f_all_default
logical function, public f_all_default(var_array)
Checks if ALL elements of a real(wp) array are of default value.
Definition m_helper_basic.fpp.f90:418
m_helper_basic::f_is_integer
logical elemental function, public f_is_integer(var)
Checks if a real(wp) variable is an integer.
Definition m_helper_basic.fpp.f90:435
m_helper_basic::f_approx_in_array
logical function, public f_approx_in_array(a, b, tol_input)
This procedure checks if the point numbers of wp belongs to another array are within tolerance.
Definition m_helper_basic.fpp.f90:355
m_helper_basic::f_approx_equal
logical elemental function, public f_approx_equal(a, b, tol_input)
This procedure checks if two floating point numbers of wp are within tolerance.
Definition m_helper_basic.fpp.f90:315
m_helper_basic::s_update_cell_bounds
elemental subroutine, public s_update_cell_bounds(bounds, m, n, p)
Updates the min and max number of cells in each set of axes.
Definition m_helper_basic.fpp.f90:512
m_helper_basic::s_configure_coordinate_bounds
subroutine, public s_configure_coordinate_bounds(recon_type, weno_polyn, muscl_polyn, igr_order, buff_size, idwint, idwbuff, viscous, bubbles_lagrange, m, n, p, num_dims, igr, ib)
Definition m_helper_basic.fpp.f90:458
m_helper_basic::f_is_default
logical elemental function, public f_is_default(var)
Checks if a real(wp) variable is of default value.
Definition m_helper_basic.fpp.f90:395