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Split out pragms from threads.h;

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More work needed; renam threads directory to "parallelism" or something like that
This commit is contained in:
paboyle 2018-01-24 13:11:04 +00:00
parent 9d08aebea9
commit f292106db6
2 changed files with 108 additions and 28 deletions
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107
lib/threads/Pragmas.h Normal file
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@ -0,0 +1,107 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/Threads.h
Copyright (C) 2015
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: paboyle <paboyle@ph.ed.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/* END LEGAL */
#pragma once
#ifndef MAX
#define MAX(x,y) ((x)>(y)?(x):(y))
#define MIN(x,y) ((x)>(y)?(y):(x))
#endif
#define strong_inline __attribute__((always_inline)) inline
#define COMMA_SAFE(...) __VA_ARGS__
#ifdef _OPENMP
#define GRID_OMP
#include <omp.h>
#endif
#ifdef __NVCC__
#define GRID_NVCC
#endif
//////////////////////////////////////////////////////////////////////////////////
// New primitives; explicit host thread calls, and accelerator data parallel calls
//////////////////////////////////////////////////////////////////////////////////
#ifdef GRID_OMP
#define thread_loop( range , body ) _Pragma("omp parallel for schedule(static)") for range { body ; };
#define thread_loop_in_region( range , body ) _Pragma("omp for schedule(static)") for range { body ; };
#define thread_loop_collapse( range , body ) _Pragma("omp parallel for collapse(2)") for range { body };
#define thread_region _Pragma("omp parallel")
#define thread_critical _Pragma("omp critical")
#else
#define thread_loop( range , body ) for range { body ; };
#define thread_loop_in_region( range , body ) for range { body ; };
#define thread_loop_collapse( range , body ) for range { body ; };
#define thread_region
#define thread_critical
#endif
//////////////////////////////////////////////////////////////////////////////////
// Deprecated primitives; to eridicate when done delete and fix errors.
//////////////////////////////////////////////////////////////////////////////////
#ifdef GRID_OMP
#define parallel_for _Pragma("omp parallel for schedule(static)") for
#define parallel_for_internal _Pragma("omp for schedule(static)") for
#define parallel_region thread_region
#define parallel_for_nest2 for
#else
#define parallel_for for
#define parallel_for_internal for
#define parallel_region
#define parallel_for_nest2 for
#endif
//////////////////////////////////////////////////////////////////////////////////
// Accelerator primitives; fall back to threading
//////////////////////////////////////////////////////////////////////////////////
#ifdef GRID_NVCC
#define accelerator __host__ __device__
#define accelerator_inline __host__ __device__ inline
// FIXME ; need to make this a CUDA kernel call
#define accelerator_loop( iterator, range, body ) \
typedef decltype(range.begin()) Iterator; \
auto lambda = [&] (Iterator iterator) { \
body; \
}; \
for(auto it=range.begin();it<range.end();it++){ \
lambda(it); \
}
#define cpu_loop( iterator, range, body ) thread_loop( (auto iterator = range.begin();iterator<range.end();iterator++), { body });
#else
#define accelerator
#define accelerator_inline strong_inline
#define accelerator_loop( iterator, range, body ) \
thread_loop( (auto iterator = range.begin();iterator<range.end();iterator++), { body });
#define cpu_loop( iterator, range, body ) \
thread_loop( (auto iterator = range.begin();iterator<range.end();iterator++), { body });
#endif

29
lib/threads/Threads.h
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@ -29,33 +29,6 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
#ifndef GRID_THREADS_H
#define GRID_THREADS_H
#ifdef _OPENMP
#define GRID_OMP
#endif
#define UNROLL _Pragma("unroll")
#ifdef GRID_OMP
#include <omp.h>
#define PARALLEL_FOR_LOOP _Pragma("omp parallel for schedule(static)")
#define PARALLEL_FOR_LOOP_INTERN _Pragma("omp for schedule(static)")
#define PARALLEL_NESTED_LOOP2 _Pragma("omp parallel for collapse(2)")
#define PARALLEL_REGION _Pragma("omp parallel")
#define PARALLEL_CRITICAL _Pragma("omp critical")
#else
#define PARALLEL_FOR_LOOP
#define PARALLEL_FOR_LOOP_INTERN
#define PARALLEL_NESTED_LOOP2
#define PARALLEL_REGION
#define PARALLEL_CRITICAL
#endif
#define parallel_region PARALLEL_REGION
#define parallel_for PARALLEL_FOR_LOOP for
#define parallel_for_internal PARALLEL_FOR_LOOP_INTERN for
#define parallel_for_nest2 PARALLEL_NESTED_LOOP2 for
NAMESPACE_BEGIN(Grid);
// Introduce a class to gain deterministic bit reproducible reduction.
@ -133,7 +106,7 @@ public:
ThreadBarrier();
for(int i=0;i<_threads;i++) val+= sum_array[i];
ThreadBarrier();
};
}
static void bcopy(const void *src, void *dst, size_t len) {
#ifdef GRID_OMP