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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223! New line at end of file is required for FYPP
224# 4 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp" 2
225
226! GPU parallel region (scalar reductions, maxval/minval)
227# 23 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
228
229! GPU parallel loop over threads (most common GPU macro)
230# 43 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
231
232! Required closing for GPU_PARALLEL_LOOP
233# 55 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
234
235! Mark routine for device compilation
236# 112 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
237
238! Declare device-resident data
239# 130 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
240
241! Inner loop within a GPU parallel region
242# 145 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
243
244! Scoped GPU data region
245# 164 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
246
247! Host code with device pointers (for MPI with GPU buffers)
248# 193 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
249
250! Allocate device memory (unscoped)
251# 207 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
252
253! Free device memory
254# 219 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
255
256! Atomic operation on device
257# 231 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
258
259! End atomic capture block
260# 242 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
261
262! Copy data between host and device
263# 254 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
264
265! Synchronization barrier
266# 266 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
267
268! Import GPU library module (openacc or omp_lib)
269# 275 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
270
271! Emit code only for AMD compiler
272# 282 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
273
274! Emit code for non-Cray compilers
275# 289 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
276
277! Emit code only for Cray compiler
278# 296 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
279
280! Emit code for non-NVIDIA compilers
281# 303 "/home/runner/work/MFC/MFC/src/common/include/parallel_macros.fpp"
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288# 14 "/home/runner/work/MFC/MFC/src/common/include/macros.fpp"
289
290! Caution: This macro requires the use of a binding script to set CUDA_VISIBLE_DEVICES, such that we have one GPU device per MPI
291! rank. That's because for both cudaMemAdvise (preferred location) and cudaMemPrefetchAsync we use location = device_id = 0. For an
292! example see misc/nvidia_uvm/bind.sh. NVIDIA unified memory page placement hint
293# 57 "/home/runner/work/MFC/MFC/src/common/include/macros.fpp"
294
295! Allocate and create GPU device memory
296# 77 "/home/runner/work/MFC/MFC/src/common/include/macros.fpp"
297
298! Free GPU device memory and deallocate
299# 85 "/home/runner/work/MFC/MFC/src/common/include/macros.fpp"
300
301! Cray-specific GPU pointer setup for vector fields
302# 109 "/home/runner/work/MFC/MFC/src/common/include/macros.fpp"
303
304! Cray-specific GPU pointer setup for scalar fields
305# 125 "/home/runner/work/MFC/MFC/src/common/include/macros.fpp"
306
307! Cray-specific GPU pointer setup for acoustic source spatials
308# 150 "/home/runner/work/MFC/MFC/src/common/include/macros.fpp"
309
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313! New line at end of file is required for FYPP
314# 6 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp" 2
315
316!> @brief Basic floating-point utilities: approximate equality, default detection, and coordinate bounds
317module m_helper_basic
318
319 use m_derived_types
320 use m_precision_select
321 use m_constants, only: recon_type_weno, recon_type_muscl
322
323 implicit none
324
325 private
326 public :: f_approx_equal, f_approx_in_array, f_is_default, f_all_default, f_is_integer, s_configure_coordinate_bounds, &
327 & s_update_cell_bounds
328
329contains
330
331 !> Check if two floating point numbers of wp are within tolerance.
332 !! @param tol_input Relative error (default = 1.e-10_wp).
333 logical elemental function f_approx_equal(a, b, tol_input) result(res)
334
335
336# 26 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
337#if MFC_OpenACC
338# 26 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
339!$acc routine seq
340# 26 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
341#elif MFC_OpenMP
342# 26 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
343
344# 26 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
345
346# 26 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
347!$omp declare target device_type(any)
348# 26 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
349#endif
350 real(wp), intent(in) :: a, b
351 real(wp), optional, intent(in) :: tol_input
352 real(wp) :: tol
353
354 if (present(tol_input)) then
355 tol = tol_input
356 else
357 if (wp == single_precision) then
358 tol = 1.e-6_wp
359 else
360 tol = 1.e-10_wp
361 end if
362 end if
363
364 if (a == b) then
365 res = .true.
366 else if (a == 0._wp .or. b == 0._wp .or. (abs(a) + abs(b) < tiny(a))) then
367 res = (abs(a - b) < (tol*tiny(a)))
368 else
369 res = (abs(a - b)/min(abs(a) + abs(b), huge(a)) < tol)
370 end if
371
372 end function f_approx_equal
373
374 !> Check if a wp value approximately matches any element of an array within tolerance.
375 !! @param tol_input Relative error (default = 1e-10_wp).
376 logical function f_approx_in_array(a, b, tol_input) result(res)
377
378
379# 55 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
380#if MFC_OpenACC
381# 55 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
382!$acc routine seq
383# 55 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
384#elif MFC_OpenMP
385# 55 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
386
387# 55 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
388
389# 55 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
390!$omp declare target device_type(any)
391# 55 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
392#endif
393 real(wp), intent(in) :: a
394 real(wp), intent(in) :: b(:)
395 real(wp), optional, intent(in) :: tol_input
396 real(wp) :: tol
397 integer :: i
398
399 res = .false.
400
401 if (present(tol_input)) then
402 tol = tol_input
403 else
404 if (wp == single_precision) then
405 tol = 1.e-6_wp
406 else
407 tol = 1.e-10_wp
408 end if
409 end if
410
411 do i = 1, size(b)
412 if (f_approx_equal(a, b(i), tol)) then
413 res = .true.
414 exit
415 end if
416 end do
417
418 end function f_approx_in_array
419
420 !> Checks if a real(wp) variable is of default value.
421 logical elemental function f_is_default(var) result(res)
422
423
424# 86 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
425#if MFC_OpenACC
426# 86 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
427!$acc routine seq
428# 86 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
429#elif MFC_OpenMP
430# 86 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
431
432# 86 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
433
434# 86 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
435!$omp declare target device_type(any)
436# 86 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
437#endif
438 real(wp), intent(in) :: var
439
440 res = f_approx_equal(var, dflt_real)
441
442 end function f_is_default
443
444 !> Checks if ALL elements of a real(wp) array are of default value.
445 logical function f_all_default(var_array) result(res)
446
447 real(wp), intent(in) :: var_array(:)
448
449 res = all(f_is_default(var_array))
450
451 end function f_all_default
452
453 !> Checks if a real(wp) variable is an integer.
454 logical elemental function f_is_integer(var) result(res)
455
456
457# 105 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
458#if MFC_OpenACC
459# 105 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
460!$acc routine seq
461# 105 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
462#elif MFC_OpenMP
463# 105 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
464
465# 105 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
466
467# 105 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
468!$omp declare target device_type(any)
469# 105 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
470#endif
471 real(wp), intent(in) :: var
472
473 res = f_approx_equal(var, real(nint(var), wp))
474
475 end function f_is_integer
476
477 !> Compute ghost-cell buffer size and set interior/buffered coordinate index bounds.
478 subroutine s_configure_coordinate_bounds(recon_type, weno_polyn, muscl_polyn, igr_order, buff_size, idwint, idwbuff, viscous, &
479
480 & bubbles_lagrange, m, n, p, num_dims, igr, ib)
481
482 integer, intent(in) :: recon_type, weno_polyn, muscl_polyn
483 integer, intent(in) :: m, n, p, num_dims, igr_order
484 integer, intent(inout) :: buff_size
485 type(int_bounds_info), dimension(3), intent(inout) :: idwint, idwbuff
486 logical, intent(in) :: viscous, bubbles_lagrange
487 logical, intent(in) :: igr
488 logical, intent(in) :: ib
489
490 ! Determine ghost cell buffer size for boundary conditions
491
492 if (igr) then
493 buff_size = (igr_order - 1)/2 + 2
494 else if (recon_type == recon_type_weno) then
495 if (viscous) then
496 buff_size = 2*weno_polyn + 2
497 else
498 buff_size = weno_polyn + 2
499 end if
500 else if (recon_type == recon_type_muscl) then
501 buff_size = muscl_polyn + 2
502 end if
503
504 ! Correction for smearing function in the lagrangian subgrid bubble model
505 if (bubbles_lagrange) then
506 buff_size = max(buff_size, 6)
507 end if
508
509 if (ib) then
510 buff_size = max(buff_size, 10)
511 end if
512
513 ! Configuring Coordinate Direction Indexes
514 idwint(1)%beg = 0; idwint(2)%beg = 0; idwint(3)%beg = 0
515 idwint(1)%end = m; idwint(2)%end = n; idwint(3)%end = p
516
517 idwbuff(1)%beg = -buff_size
518 if (num_dims > 1) then; idwbuff(2)%beg = -buff_size; else; idwbuff(2)%beg = 0; end if
519 if (num_dims > 2) then; idwbuff(3)%beg = -buff_size; else; idwbuff(3)%beg = 0; end if
520
521 idwbuff(1)%end = idwint(1)%end - idwbuff(1)%beg
522 idwbuff(2)%end = idwint(2)%end - idwbuff(2)%beg
523 idwbuff(3)%end = idwint(3)%end - idwbuff(3)%beg
524
525 end subroutine s_configure_coordinate_bounds
526
527 !> Updates the min and max number of cells in each set of axes
528 !! @param bounds Min and max values to update
529 elemental subroutine s_update_cell_bounds(bounds, m, n, p)
530
531 type(cell_num_bounds), intent(out) :: bounds
532 integer, intent(in) :: m, n, p
533
534 bounds%mn_max = max(m, n)
535 bounds%np_max = max(n, p)
536 bounds%mp_max = max(m, p)
537 bounds%mnp_max = max(m, n, p)
538 bounds%mn_min = min(m, n)
539 bounds%np_min = min(n, p)
540 bounds%mp_min = min(m, p)
541 bounds%mnp_min = min(m, n, p)
542
543 end subroutine s_update_cell_bounds
544
545end module m_helper_basic
m_constants
Compile-time constant parameters: default values, tolerances, and physical constants.
Definition m_constants.fpp.f90:7
m_constants::recon_type_muscl
integer, parameter recon_type_muscl
Definition m_constants.fpp.f90:148
m_constants::recon_type_weno
integer, parameter recon_type_weno
Definition m_constants.fpp.f90:147
m_derived_types
Shared derived types for field data, patch geometry, bubble dynamics, and MPI I/O structures.
Definition m_derived_types.fpp.f90:317
m_helper_basic
Basic floating-point utilities: approximate equality, default detection, and coordinate bounds.
Definition m_helper_basic.fpp.f90:317
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.f90:446
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.f90:455
m_helper_basic::f_approx_in_array
logical function, public f_approx_in_array(a, b, tol_input)
Check if a wp value approximately matches any element of an array within tolerance.
Definition m_helper_basic.fpp.f90:377
m_helper_basic::f_approx_equal
logical elemental function, public f_approx_equal(a, b, tol_input)
Check if two floating point numbers of wp are within tolerance.
Definition m_helper_basic.fpp.f90:334
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.f90:530
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)
Compute ghost-cell buffer size and set interior/buffered coordinate index bounds.
Definition m_helper_basic.fpp.f90:481
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.f90:422
m_precision_select
Working-precision kind selection (half/single/double) and corresponding MPI datatype parameters.
Definition m_precision_select.f90:5
m_precision_select::wp
integer, parameter wp
Change to single_precision if needed.
Definition m_precision_select.f90:25
m_precision_select::single_precision
integer, parameter single_precision
Definition m_precision_select.f90:17