07dd3bcda1
OpenMP 5.1 adds env vars and functions to set and query new ICVs used
as fallback if thread_limit or num_teams clauses aren't specified on
teams construct.
The following patch implements those, though further work will be needed:
1) OpenMP 5.1 also changed the num_teams clause, so that it can specify
both lower and upper limit for how many teams should be created and
changed the meaning when only one expression is provided, instead of
num_teams(expr) in 5.0 meaning num_teams(1:expr) in 5.1, it now means
num_teams(expr:expr), i.e. while previously we could create 1 to expr
teams, in 5.1 we have some low limit by default equal to the single
expression provided and may not create fewer teams.
For host teams (which we don't currently implement efficiently for
NUMA hosts) we trivially satisfy it now by always honoring what the
user asked for, but for the offloading teams I think we'll need to
rethink the APIs; currently teams construct is just a call that returns
and possibly lowers the number of teams; and whenever possible we try
to evaluate num_teams/thread_limit already on the target construct
and the GOMP_teams call just sets the number of teams to the minimum
of provided and requested teams; for some cases e.g. where target
is not combined with teams and num_teams expression calls some functions
etc., we need to call those functions in the target region and so it is
late to figure number of teams, but also hw could just limit what it
is willing to create; in that case I'm afraid we need to run the target
body multiple times and arrange for omp_get_team_num () returning the
right values
2) we need to finally implement the NUMA handling for GOMP_teams_reg
3) I now realize I haven't added some testcase coverage, will do that
incrementally
4) libgomp.texi needs updates for these new APIs, but also others like
the allocator
2021-10-11 Jakub Jelinek <jakub@redhat.com>
gcc/
* omp-low.c (omp_runtime_api_call): Handle omp_get_max_teams,
omp_[sg]et_teams_thread_limit and omp_set_num_teams.
libgomp/
* omp.h.in (omp_set_num_teams, omp_get_max_teams,
omp_set_teams_thread_limit, omp_get_teams_thread_limit): Declare.
* omp_lib.f90.in (omp_set_num_teams, omp_get_max_teams,
omp_set_teams_thread_limit, omp_get_teams_thread_limit): Declare.
* omp_lib.h.in (omp_set_num_teams, omp_get_max_teams,
omp_set_teams_thread_limit, omp_get_teams_thread_limit): Declare.
* libgomp.h (gomp_nteams_var, gomp_teams_thread_limit_var): Declare.
* libgomp.map (OMP_5.1): Export omp_get_max_teams{,_},
omp_get_teams_thread_limit{,_}, omp_set_num_teams{,_,_8_} and
omp_set_teams_thread_limit{,_,_8_}.
* icv.c (omp_set_num_teams, omp_get_max_teams,
omp_set_teams_thread_limit, omp_get_teams_thread_limit): New
functions.
* env.c (gomp_nteams_var, gomp_teams_thread_limit_var): Define.
(omp_display_env): Print OMP_NUM_TEAMS and OMP_TEAMS_THREAD_LIMIT.
(initialize_env): Handle OMP_NUM_TEAMS and OMP_TEAMS_THREAD_LIMIT env
vars.
* teams.c (GOMP_teams_reg): If thread_limit is not specified, use
gomp_teams_thread_limit_var as fallback if not zero. If num_teams
is not specified, use gomp_nteams_var.
* fortran.c (omp_set_num_teams, omp_get_max_teams,
omp_set_teams_thread_limit, omp_get_teams_thread_limit): Add
ialias_redirect.
(omp_set_num_teams_, omp_set_num_teams_8_, omp_get_max_teams_,
omp_set_teams_thread_limit_, omp_set_teams_thread_limit_8_,
omp_get_teams_thread_limit_): New functions.
419 lines
18 KiB
C
419 lines
18 KiB
C
! Copyright (C) 2005-2021 Free Software Foundation, Inc.
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! Contributed by Jakub Jelinek <jakub@redhat.com>.
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! This file is part of the GNU Offloading and Multi Processing Library
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! (libgomp).
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! Libgomp is free software; you can redistribute it and/or modify it
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! under the terms of the GNU General Public License as published by
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! the Free Software Foundation; either version 3, or (at your option)
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! any later version.
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! Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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! FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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! more details.
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! Under Section 7 of GPL version 3, you are granted additional
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! permissions described in the GCC Runtime Library Exception, version
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! 3.1, as published by the Free Software Foundation.
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! You should have received a copy of the GNU General Public License and
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! a copy of the GCC Runtime Library Exception along with this program;
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! see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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! <http://www.gnu.org/licenses/>.
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integer omp_lock_kind, omp_nest_lock_kind, openmp_version
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parameter (omp_lock_kind = @OMP_LOCK_KIND@)
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parameter (omp_nest_lock_kind = @OMP_NEST_LOCK_KIND@)
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integer omp_depend_kind
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parameter (omp_depend_kind = @OMP_DEPEND_KIND@)
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integer omp_sched_kind
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parameter (omp_sched_kind = 4)
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integer (omp_sched_kind) omp_sched_static, omp_sched_dynamic
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integer (omp_sched_kind) omp_sched_guided, omp_sched_auto
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parameter (omp_sched_static = 1)
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parameter (omp_sched_dynamic = 2)
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parameter (omp_sched_guided = 3)
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parameter (omp_sched_auto = 4)
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integer omp_proc_bind_kind
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parameter (omp_proc_bind_kind = 4)
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integer (omp_proc_bind_kind) omp_proc_bind_false
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integer (omp_proc_bind_kind) omp_proc_bind_true
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integer (omp_proc_bind_kind) omp_proc_bind_primary
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integer (omp_proc_bind_kind) omp_proc_bind_master
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integer (omp_proc_bind_kind) omp_proc_bind_close
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integer (omp_proc_bind_kind) omp_proc_bind_spread
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parameter (omp_proc_bind_false = 0)
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parameter (omp_proc_bind_true = 1)
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parameter (omp_proc_bind_primary = 2)
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parameter (omp_proc_bind_master = 2)
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parameter (omp_proc_bind_close = 3)
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parameter (omp_proc_bind_spread = 4)
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integer omp_sync_hint_kind
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integer omp_lock_hint_kind
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parameter (omp_sync_hint_kind = 4)
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parameter (omp_lock_hint_kind = omp_sync_hint_kind)
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integer (omp_sync_hint_kind) omp_sync_hint_none
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integer (omp_lock_hint_kind) omp_lock_hint_none
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integer (omp_sync_hint_kind) omp_sync_hint_uncontended
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integer (omp_lock_hint_kind) omp_lock_hint_uncontended
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integer (omp_sync_hint_kind) omp_sync_hint_contended
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integer (omp_sync_hint_kind) omp_lock_hint_contended
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integer (omp_lock_hint_kind) omp_sync_hint_nonspeculative
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integer (omp_lock_hint_kind) omp_lock_hint_nonspeculative
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integer (omp_sync_hint_kind) omp_sync_hint_speculative
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integer (omp_lock_hint_kind) omp_lock_hint_speculative
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parameter (omp_sync_hint_none = 0)
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parameter (omp_lock_hint_none = 0)
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parameter (omp_sync_hint_uncontended = 1)
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parameter (omp_lock_hint_uncontended = 1)
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parameter (omp_sync_hint_contended = 2)
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parameter (omp_lock_hint_contended = 2)
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parameter (omp_sync_hint_nonspeculative = 4)
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parameter (omp_lock_hint_nonspeculative = 4)
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parameter (omp_sync_hint_speculative = 8)
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parameter (omp_lock_hint_speculative = 8)
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parameter (openmp_version = 201511)
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integer omp_pause_resource_kind
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parameter (omp_pause_resource_kind = 4)
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integer (omp_pause_resource_kind) omp_pause_soft
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integer (omp_pause_resource_kind) omp_pause_hard
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parameter (omp_pause_soft = 1)
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parameter (omp_pause_hard = 2)
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integer omp_allocator_handle_kind, omp_alloctrait_key_kind
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integer omp_alloctrait_val_kind, omp_memspace_handle_kind
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integer omp_event_handle_kind
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parameter (omp_allocator_handle_kind = @INTPTR_T_KIND@)
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parameter (omp_alloctrait_key_kind = 4)
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parameter (omp_alloctrait_val_kind = @INTPTR_T_KIND@)
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parameter (omp_memspace_handle_kind = @INTPTR_T_KIND@)
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parameter (omp_event_handle_kind = @INTPTR_T_KIND@)
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integer (omp_alloctrait_key_kind) omp_atk_sync_hint
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integer (omp_alloctrait_key_kind) omp_atk_alignment
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integer (omp_alloctrait_key_kind) omp_atk_access
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integer (omp_alloctrait_key_kind) omp_atk_pool_size
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integer (omp_alloctrait_key_kind) omp_atk_fallback
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integer (omp_alloctrait_key_kind) omp_atk_fb_data
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integer (omp_alloctrait_key_kind) omp_atk_pinned
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integer (omp_alloctrait_key_kind) omp_atk_partition
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parameter (omp_atk_sync_hint = 1)
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parameter (omp_atk_alignment = 2)
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parameter (omp_atk_access = 3)
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parameter (omp_atk_pool_size = 4)
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parameter (omp_atk_fallback = 5)
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parameter (omp_atk_fb_data = 6)
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parameter (omp_atk_pinned = 7)
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parameter (omp_atk_partition = 8)
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integer (omp_alloctrait_val_kind) omp_atv_false
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integer (omp_alloctrait_val_kind) omp_atv_true
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integer (omp_alloctrait_val_kind) omp_atv_default
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integer (omp_alloctrait_val_kind) omp_atv_contended
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integer (omp_alloctrait_val_kind) omp_atv_uncontended
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integer (omp_alloctrait_val_kind) omp_atv_serialized
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integer (omp_alloctrait_val_kind) omp_atv_sequential
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integer (omp_alloctrait_val_kind) omp_atv_private
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integer (omp_alloctrait_val_kind) omp_atv_all
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integer (omp_alloctrait_val_kind) omp_atv_thread
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integer (omp_alloctrait_val_kind) omp_atv_pteam
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integer (omp_alloctrait_val_kind) omp_atv_cgroup
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integer (omp_alloctrait_val_kind) omp_atv_default_mem_fb
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integer (omp_alloctrait_val_kind) omp_atv_null_fb
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integer (omp_alloctrait_val_kind) omp_atv_abort_fb
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integer (omp_alloctrait_val_kind) omp_atv_allocator_fb
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integer (omp_alloctrait_val_kind) omp_atv_environment
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integer (omp_alloctrait_val_kind) omp_atv_nearest
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integer (omp_alloctrait_val_kind) omp_atv_blocked
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integer (omp_alloctrait_val_kind) omp_atv_interleaved
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parameter (omp_atv_default = -1)
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parameter (omp_atv_false = 0)
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parameter (omp_atv_true = 1)
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parameter (omp_atv_contended = 3)
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parameter (omp_atv_uncontended = 4)
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parameter (omp_atv_serialized = 5)
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parameter (omp_atv_sequential = omp_atv_serialized)
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parameter (omp_atv_private = 6)
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parameter (omp_atv_all = 7)
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parameter (omp_atv_thread = 8)
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parameter (omp_atv_pteam = 9)
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parameter (omp_atv_cgroup = 10)
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parameter (omp_atv_default_mem_fb = 11)
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parameter (omp_atv_null_fb = 12)
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parameter (omp_atv_abort_fb = 13)
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parameter (omp_atv_allocator_fb = 14)
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parameter (omp_atv_environment = 15)
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parameter (omp_atv_nearest = 16)
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parameter (omp_atv_blocked = 17)
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parameter (omp_atv_interleaved = 18)
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integer (omp_allocator_handle_kind) omp_null_allocator
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integer (omp_allocator_handle_kind) omp_default_mem_alloc
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integer (omp_allocator_handle_kind) omp_large_cap_mem_alloc
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integer (omp_allocator_handle_kind) omp_const_mem_alloc
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integer (omp_allocator_handle_kind) omp_high_bw_mem_alloc
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integer (omp_allocator_handle_kind) omp_low_lat_mem_alloc
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integer (omp_allocator_handle_kind) omp_cgroup_mem_alloc
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integer (omp_allocator_handle_kind) omp_pteam_mem_alloc
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integer (omp_allocator_handle_kind) omp_thread_mem_alloc
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parameter (omp_null_allocator = 0)
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parameter (omp_default_mem_alloc = 1)
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parameter (omp_large_cap_mem_alloc = 2)
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parameter (omp_const_mem_alloc = 3)
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parameter (omp_high_bw_mem_alloc = 4)
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parameter (omp_low_lat_mem_alloc = 5)
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parameter (omp_cgroup_mem_alloc = 6)
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parameter (omp_pteam_mem_alloc = 7)
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parameter (omp_thread_mem_alloc = 8)
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integer (omp_memspace_handle_kind) omp_default_mem_space
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integer (omp_memspace_handle_kind) omp_large_cap_mem_space
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integer (omp_memspace_handle_kind) omp_const_mem_space
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integer (omp_memspace_handle_kind) omp_high_bw_mem_space
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integer (omp_memspace_handle_kind) omp_low_lat_mem_space
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parameter (omp_default_mem_space = 0)
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parameter (omp_large_cap_mem_space = 1)
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parameter (omp_const_mem_space = 2)
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parameter (omp_high_bw_mem_space = 3)
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parameter (omp_low_lat_mem_space = 4)
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type omp_alloctrait
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integer (omp_alloctrait_key_kind) key
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integer (omp_alloctrait_val_kind) value
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end type omp_alloctrait
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external omp_init_lock, omp_init_nest_lock
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external omp_init_lock_with_hint
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external omp_init_nest_lock_with_hint
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external omp_destroy_lock, omp_destroy_nest_lock
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external omp_set_lock, omp_set_nest_lock
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external omp_unset_lock, omp_unset_nest_lock
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external omp_set_dynamic, omp_set_nested
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external omp_set_num_threads
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external omp_get_dynamic, omp_get_nested
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logical(4) omp_get_dynamic, omp_get_nested
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external omp_test_lock, omp_in_parallel
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logical(4) omp_test_lock, omp_in_parallel
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external omp_get_max_threads, omp_get_num_procs
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integer(4) omp_get_max_threads, omp_get_num_procs
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external omp_get_num_threads, omp_get_thread_num
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integer(4) omp_get_num_threads, omp_get_thread_num
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external omp_test_nest_lock
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integer(4) omp_test_nest_lock
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external omp_get_wtick, omp_get_wtime
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double precision omp_get_wtick, omp_get_wtime
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external omp_set_schedule, omp_get_schedule
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external omp_get_thread_limit, omp_set_max_active_levels
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external omp_get_max_active_levels, omp_get_level
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external omp_get_ancestor_thread_num, omp_get_team_size
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external omp_get_active_level
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external omp_get_supported_active_levels
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integer(4) omp_get_thread_limit, omp_get_max_active_levels
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integer(4) omp_get_level, omp_get_ancestor_thread_num
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integer(4) omp_get_team_size, omp_get_active_level
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integer(4) omp_get_supported_active_levels
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external omp_in_final
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logical(4) omp_in_final
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external omp_get_cancellation
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logical(4) omp_get_cancellation
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external omp_get_proc_bind
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integer(omp_proc_bind_kind) omp_get_proc_bind
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integer(4) omp_get_num_places
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external omp_get_num_places
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integer(4) omp_get_place_num_procs
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external omp_get_place_num_procs
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external omp_get_place_proc_ids
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integer(4) omp_get_place_num
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external omp_get_place_num
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integer(4) omp_get_partition_num_places
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external omp_get_partition_num_places
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external omp_get_partition_place_nums
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external omp_set_default_device, omp_get_default_device
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external omp_get_num_devices, omp_get_num_teams
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external omp_get_team_num
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integer(4) omp_get_default_device, omp_get_num_devices
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integer(4) omp_get_num_teams, omp_get_team_num
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external omp_is_initial_device
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logical(4) omp_is_initial_device
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external omp_get_initial_device
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integer(4) omp_get_initial_device
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external omp_get_device_num
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integer(4) omp_get_device_num
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external omp_get_max_task_priority
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integer(4) omp_get_max_task_priority
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external omp_set_num_teams, omp_set_teams_thread_limit
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external omp_get_max_teams, omp_get_teams_thread_limit
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integer(4) omp_get_max_teams, omp_get_teams_thread_limit
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external omp_fulfill_event
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external omp_set_affinity_format, omp_get_affinity_format
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external omp_display_affinity, omp_capture_affinity
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integer(4) omp_get_affinity_format
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integer(4) omp_capture_affinity
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external omp_pause_resource, omp_pause_resource_all
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integer(4) omp_pause_resource
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integer(4) omp_pause_resource_all
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external omp_init_allocator
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integer (omp_allocator_handle_kind) omp_init_allocator
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external omp_destroy_allocator
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external omp_set_default_allocator
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external omp_get_default_allocator
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integer (omp_allocator_handle_kind) omp_get_default_allocator
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external omp_display_env
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interface
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function omp_alloc (size, allocator) bind(c)
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use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
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use, intrinsic :: omp_lib_kinds
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type(c_ptr) :: omp_alloc
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integer(c_size_t), value :: size
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integer(omp_allocator_handle_kind), value :: allocator
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end function omp_alloc
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end interface
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interface
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function omp_aligned_alloc (alignment, size, allocator) bind(c)
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use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
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use, intrinsic :: omp_lib_kinds
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type(c_ptr) :: omp_aligned_alloc
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integer(c_size_t), value :: alignment, size
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integer(omp_allocator_handle_kind), value :: allocator
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end function omp_aligned_alloc
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end interface
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interface
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subroutine omp_free(ptr, allocator) bind(c)
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use, intrinsic :: iso_c_binding, only : c_ptr
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use, intrinsic :: omp_lib_kinds
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type(c_ptr), value :: ptr
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integer(omp_allocator_handle_kind), value :: allocator
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end subroutine omp_free
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end interface
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interface
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function omp_calloc (nmemb, size, allocator) bind(c)
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use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
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use, intrinsic :: omp_lib_kinds
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type(c_ptr) :: omp_calloc
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integer(c_size_t), value :: nmemb, size
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integer(omp_allocator_handle_kind), value :: allocator
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end function omp_calloc
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end interface
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interface
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function omp_aligned_calloc (alignment, nmemb, size, allocator) &
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& bind(c)
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use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
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use, intrinsic :: omp_lib_kinds
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type(c_ptr) :: omp_aligned_calloc
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integer(c_size_t), value :: alignment, nmemb, size
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integer(omp_allocator_handle_kind), value :: allocator
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end function omp_aligned_calloc
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end interface
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interface
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function omp_realloc (ptr, size, allocator, free_allocator) &
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& bind(c)
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use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t
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use, intrinsic :: omp_lib_kinds
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type(c_ptr) :: omp_realloc
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|
type(c_ptr), value :: ptr
|
|
integer(c_size_t), value :: size
|
|
integer(omp_allocator_handle_kind), value :: allocator
|
|
integer(omp_allocator_handle_kind), value :: free_allocator
|
|
end function omp_realloc
|
|
end interface
|
|
|
|
interface
|
|
function omp_target_alloc (size, device_num) bind(c)
|
|
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t, c_int
|
|
type(c_ptr) :: omp_target_alloc
|
|
integer(c_size_t), value :: size
|
|
integer(c_int), value :: device_num
|
|
end function omp_target_alloc
|
|
end interface
|
|
|
|
interface
|
|
subroutine omp_target_free (device_ptr, device_num) bind(c)
|
|
use, intrinsic :: iso_c_binding, only : c_ptr, c_int
|
|
type(c_ptr), value :: device_ptr
|
|
integer(c_int), value :: device_num
|
|
end subroutine omp_target_free
|
|
end interface
|
|
|
|
interface
|
|
function omp_target_is_present (ptr, device_num) bind(c)
|
|
use, intrinsic :: iso_c_binding, only : c_ptr, c_int
|
|
integer(c_int) :: omp_target_is_present
|
|
type(c_ptr), value :: ptr
|
|
integer(c_int), value :: device_num
|
|
end function omp_target_is_present
|
|
end interface
|
|
|
|
interface
|
|
function omp_target_memcpy (dst, src, length, dst_offset, &
|
|
& src_offset, dst_device_num, &
|
|
& src_device_num) bind(c)
|
|
use, intrinsic :: iso_c_binding, only : c_ptr, c_int, c_size_t
|
|
integer(c_int) :: omp_target_memcpy
|
|
type(c_ptr), value :: dst, src
|
|
integer(c_size_t), value :: length, dst_offset, src_offset
|
|
integer(c_int), value :: dst_device_num, src_device_num
|
|
end function omp_target_memcpy
|
|
end interface
|
|
|
|
interface
|
|
function omp_target_memcpy_rect (dst,src,element_size, num_dims, &
|
|
& volume, dst_offsets, &
|
|
& src_offsets, dst_dimensions, &
|
|
& src_dimensions, dst_device_num, &
|
|
& src_device_num) bind(c)
|
|
use, intrinsic :: iso_c_binding, only : c_ptr, c_int, c_size_t
|
|
integer(c_int) :: omp_target_memcpy_rect
|
|
type(c_ptr), value :: dst, src
|
|
integer(c_size_t), value :: element_size
|
|
integer(c_int), value :: num_dims
|
|
integer(c_int), value :: dst_device_num, src_device_num
|
|
integer(c_size_t), intent(in) :: volume(*), dst_offsets(*)
|
|
integer(c_size_t), intent(in) :: src_offsets(*)
|
|
integer(c_size_t), intent(in) :: dst_dimensions(*)
|
|
integer(c_size_t), intent(in) :: src_dimensions(*)
|
|
end function omp_target_memcpy_rect
|
|
end interface
|
|
|
|
interface
|
|
function omp_target_associate_ptr (host_ptr, device_ptr, size, &
|
|
& device_offset, device_num) &
|
|
& bind(c)
|
|
use, intrinsic :: iso_c_binding, only : c_ptr, c_size_t, c_int
|
|
integer(c_int) :: omp_target_associate_ptr
|
|
type(c_ptr), value :: host_ptr, device_ptr
|
|
integer(c_size_t), value :: size, device_offset
|
|
integer(c_int), value :: device_num
|
|
end function omp_target_associate_ptr
|
|
end interface
|
|
|
|
interface
|
|
function omp_target_disassociate_ptr (ptr, device_num) bind(c)
|
|
use, intrinsic :: iso_c_binding, only : c_ptr, c_int
|
|
integer(c_int) :: omp_target_disassociate_ptr
|
|
type(c_ptr), value :: ptr
|
|
integer(c_int), value :: device_num
|
|
end function omp_target_disassociate_ptr
|
|
end interface
|