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
321 implicit none
322
323 private
324 public :: f_approx_equal, f_approx_in_array, f_is_default, f_all_default, f_is_integer, s_configure_coordinate_bounds, &
325 & s_update_cell_bounds
326
327contains
328
329 !> Check if two floating point numbers of wp are within tolerance.
330 !! @param tol_input Relative error (default = 1.e-10_wp).
331 logical elemental function f_approx_equal(a, b, tol_input) result(res)
332
333
334# 24 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
335#if MFC_OpenACC
336# 24 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
337!$acc routine seq
338# 24 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
339#elif MFC_OpenMP
340# 24 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
341
342# 24 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
343
344# 24 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
345!$omp declare target device_type(any)
346# 24 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
347#endif
348 real(wp), intent(in) :: a, b
349 real(wp), optional, intent(in) :: tol_input
350 real(wp) :: tol
351
352 if (present(tol_input)) then
353 tol = tol_input
354 else
355 tol = 1.e-10_wp
356 end if
357
358 if (a == b) then
359 res = .true.
360 else if (a == 0._wp .or. b == 0._wp .or. (abs(a) + abs(b) < tiny(a))) then
361 res = (abs(a - b) < (tol*tiny(a)))
362 else
363 res = (abs(a - b)/min(abs(a) + abs(b), huge(a)) < tol)
364 end if
365
366 end function f_approx_equal
367
368 !> Check if a wp value approximately matches any element of an array within tolerance.
369 !! @param tol_input Relative error (default = 1e-10_wp).
370 logical function f_approx_in_array(a, b, tol_input) result(res)
371
372
373# 49 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
374#if MFC_OpenACC
375# 49 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
376!$acc routine seq
377# 49 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
378#elif MFC_OpenMP
379# 49 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
380
381# 49 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
382
383# 49 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
384!$omp declare target device_type(any)
385# 49 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
386#endif
387 real(wp), intent(in) :: a
388 real(wp), intent(in) :: b(:)
389 real(wp), optional, intent(in) :: tol_input
390 real(wp) :: tol
391 integer :: i
392
393 res = .false.
394
395 if (present(tol_input)) then
396 tol = tol_input
397 else
398 tol = 1e-10_wp
399 end if
400
401 do i = 1, size(b)
402 if (f_approx_equal(a, b(i), tol)) then
403 res = .true.
404 exit
405 end if
406 end do
407
408 end function f_approx_in_array
409
410 !> Checks if a real(wp) variable is of default value.
411 logical elemental function f_is_default(var) result(res)
412
413
414# 76 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
415#if MFC_OpenACC
416# 76 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
417!$acc routine seq
418# 76 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
419#elif MFC_OpenMP
420# 76 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
421
422# 76 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
423
424# 76 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
425!$omp declare target device_type(any)
426# 76 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
427#endif
428 real(wp), intent(in) :: var
429
430 res = f_approx_equal(var, dflt_real)
431
432 end function f_is_default
433
434 !> Checks if ALL elements of a real(wp) array are of default value.
435 logical function f_all_default(var_array) result(res)
436
437 real(wp), intent(in) :: var_array(:)
438
439 res = all(f_is_default(var_array))
440
441 end function f_all_default
442
443 !> Checks if a real(wp) variable is an integer.
444 logical elemental function f_is_integer(var) result(res)
445
446
447# 95 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
448#if MFC_OpenACC
449# 95 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
450!$acc routine seq
451# 95 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
452#elif MFC_OpenMP
453# 95 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
454
455# 95 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
456
457# 95 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
458!$omp declare target device_type(any)
459# 95 "/home/runner/work/MFC/MFC/src/common/m_helper_basic.fpp"
460#endif
461 real(wp), intent(in) :: var
462
463 res = f_approx_equal(var, real(nint(var), wp))
464
465 end function f_is_integer
466
467 !> Compute ghost-cell buffer size and set interior/buffered coordinate index bounds.
468 subroutine s_configure_coordinate_bounds(recon_type, weno_polyn, muscl_polyn, igr_order, buff_size, idwint, idwbuff, viscous, &
469
470 & bubbles_lagrange, m, n, p, num_dims, igr, ib)
471
472 integer, intent(in) :: recon_type, weno_polyn, muscl_polyn
473 integer, intent(in) :: m, n, p, num_dims, igr_order
474 integer, intent(inout) :: buff_size
475 type(int_bounds_info), dimension(3), intent(inout) :: idwint, idwbuff
476 logical, intent(in) :: viscous, bubbles_lagrange
477 logical, intent(in) :: igr
478 logical, intent(in) :: ib
479
480 ! Determine ghost cell buffer size for boundary conditions
481
482 if (igr) then
483 buff_size = (igr_order - 1)/2 + 2
484 else if (recon_type == weno_type) then
485 if (viscous) then
486 buff_size = 2*weno_polyn + 2
487 else
488 buff_size = weno_polyn + 2
489 end if
490 else if (recon_type == muscl_type) then
491 buff_size = muscl_polyn + 2
492 end if
493
494 ! Correction for smearing function in the lagrangian subgrid bubble model
495 if (bubbles_lagrange) then
496 buff_size = max(buff_size, 6)
497 end if
498
499 if (ib) then
500 buff_size = max(buff_size, 10)
501 end if
502
503 ! Configuring Coordinate Direction Indexes
504 idwint(1)%beg = 0; idwint(2)%beg = 0; idwint(3)%beg = 0
505 idwint(1)%end = m; idwint(2)%end = n; idwint(3)%end = p
506
507 idwbuff(1)%beg = -buff_size
508 if (num_dims > 1) then; idwbuff(2)%beg = -buff_size; else; idwbuff(2)%beg = 0; end if
509 if (num_dims > 2) then; idwbuff(3)%beg = -buff_size; else; idwbuff(3)%beg = 0; end if
510
511 idwbuff(1)%end = idwint(1)%end - idwbuff(1)%beg
512 idwbuff(2)%end = idwint(2)%end - idwbuff(2)%beg
513 idwbuff(3)%end = idwint(3)%end - idwbuff(3)%beg
514
515 end subroutine s_configure_coordinate_bounds
516
517 !> Updates the min and max number of cells in each set of axes
518 !! @param bounds Min and max values to update
519 elemental subroutine s_update_cell_bounds(bounds, m, n, p)
520
521 type(cell_num_bounds), intent(out) :: bounds
522 integer, intent(in) :: m, n, p
523
524 bounds%mn_max = max(m, n)
525 bounds%np_max = max(n, p)
526 bounds%mp_max = max(m, p)
527 bounds%mnp_max = max(m, n, p)
528 bounds%mn_min = min(m, n)
529 bounds%np_min = min(n, p)
530 bounds%mp_min = min(m, p)
531 bounds%mnp_min = min(m, n, p)
532
533 end subroutine s_update_cell_bounds
534
535end 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.f90:317
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.f90:436
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.f90:445
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.f90:371
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.f90:332
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.f90:520
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.f90:471
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.f90:412