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wave_kern.cl
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wave_kern.cl
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/*
* Copyright (c) 2011-2019, Triad National Security, LLC.
* All rights Reserved.
*
* CLAMR -- LA-CC-11-094
*
* Copyright 2011-2019. Triad National Security, LLC. This software was produced
* under U.S. Government contract 89233218CNA000001 for Los Alamos National
* Laboratory (LANL), which is operated by Triad National Security, LLC
* for the U.S. Department of Energy. The U.S. Government has rights to use,
* reproduce, and distribute this software. NEITHER THE GOVERNMENT NOR
* TRIAD NATIONAL SECURITY, LLC MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR
* ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified
* to produce derivative works, such modified software should be clearly marked,
* so as not to confuse it with the version available from LANL.
*
* Additionally, redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Triad National Security, LLC, Los Alamos
* National Laboratory, LANL, the U.S. Government, nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE TRIAD NATIONAL SECURITY, LLC AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL TRIAD NATIONAL
* SECURITY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* CLAMR -- LA-CC-11-094
* This research code is being developed as part of the
* 2011 X Division Summer Workshop for the express purpose
* of a collaborative code for development of ideas in
* the implementation of AMR codes for Exascale platforms
*
* AMR implementation of the Wave code previously developed
* as a demonstration code for regular grids on Exascale platforms
* as part of the Supercomputing Challenge and Los Alamos
* National Laboratory
*
* Authors: Bob Robey XCP-2 [email protected]
* Neal Davis [email protected], [email protected]
* David Nicholaeff [email protected], [email protected]
* Dennis Trujillo [email protected], [email protected]
*
*/
#ifndef GPU_DOUBLE_SUPPORT
#define GPU_DOUBLE_SUPPORT
#ifdef HAVE_CL_DOUBLE
#pragma OPENCL EXTENSION cl_khr_fp64 : enable
typedef double real;
typedef double2 real2;
#else
typedef float real;
typedef float2 real2;
#endif
#endif
#ifndef max
#define max(a,b) ((a) > (b) ? (a) : (b))
#endif
#ifndef fabs
#define fabs(a) ( (a) < 0 ? -(a) : a)
#endif
void reduction_max_within_tile1(__local real *tile);
void reduction_max_within_tile2(__local real2 *tile);
void reduction_minmax_within_tile4(__local int4 *tile);
void reduction_minmax_within_tile4(__local int4 *tile)
{
const unsigned int tiX = get_local_id(0);
const unsigned int ntX = get_local_size(0);
for (int offset=ntX>>1; offset > MIN_REDUCE_SYNC_SIZE; offset >>= 1){
if (tiX < offset){
if (tile[tiX+offset].s0 < tile[tiX].s0) tile[tiX].s0 = tile[tiX+offset].s0;
if (tile[tiX+offset].s1 > tile[tiX].s1) tile[tiX].s1 = tile[tiX+offset].s1;
if (tile[tiX+offset].s2 < tile[tiX].s2) tile[tiX].s2 = tile[tiX+offset].s2;
if (tile[tiX+offset].s3 > tile[tiX].s3) tile[tiX].s3 = tile[tiX+offset].s3;
}
barrier(CLK_LOCAL_MEM_FENCE);
}
if (tiX < MIN_REDUCE_SYNC_SIZE)
{
for (int offset = MIN_REDUCE_SYNC_SIZE; offset > 1; offset >>= 1)
{
if (tile[tiX + offset].s0 < tile[tiX].s0) tile[tiX].s0 = tile[tiX + offset].s0;
if (tile[tiX + offset].s1 > tile[tiX].s1) tile[tiX].s1 = tile[tiX + offset].s1;
if (tile[tiX + offset].s2 < tile[tiX].s2) tile[tiX].s2 = tile[tiX + offset].s2;
if (tile[tiX + offset].s3 > tile[tiX].s3) tile[tiX].s3 = tile[tiX + offset].s3;
barrier(CLK_LOCAL_MEM_FENCE);
}
if (tile[tiX + 1].s0 < tile[tiX].s0) tile[tiX].s0 = tile[tiX + 1].s0;
if (tile[tiX + 1].s1 > tile[tiX].s1) tile[tiX].s1 = tile[tiX + 1].s1;
if (tile[tiX + 1].s2 < tile[tiX].s2) tile[tiX].s2 = tile[tiX + 1].s2;
if (tile[tiX + 1].s3 > tile[tiX].s3) tile[tiX].s3 = tile[tiX + 1].s3;
}
}
real MAX(real a, real b)
{
return max(a, b);
}
#define REDUCE_IN_TILE(operation, _tile_arr) \
for (int offset = ntX >> 1; offset > MIN_REDUCE_SYNC_SIZE; offset >>= 1) \
{ \
if (tiX < offset) \
{ \
_tile_arr[tiX] = operation(_tile_arr[tiX], _tile_arr[tiX+offset]); \
} \
barrier(CLK_LOCAL_MEM_FENCE); \
} \
if (tiX < MIN_REDUCE_SYNC_SIZE) \
{ \
for (int offset = MIN_REDUCE_SYNC_SIZE; offset > 1; offset >>= 1) \
{ \
_tile_arr[tiX] = operation(_tile_arr[tiX], _tile_arr[tiX+offset]); \
barrier(CLK_LOCAL_MEM_FENCE); \
} \
_tile_arr[tiX] = operation(_tile_arr[tiX], _tile_arr[tiX+1]); \
}
void reduction_max_within_tile1(__local real *tile)
{
const unsigned int tiX = get_local_id(0);
const unsigned int ntX = get_local_size(0);
REDUCE_IN_TILE(MAX, tile);
}
void reduction_max_within_tile2(__local real2 *tile)
{
const unsigned int tiX = get_local_id(0);
const unsigned int ntX = get_local_size(0);
for (int offset = ntX >> 1; offset > MIN_REDUCE_SYNC_SIZE; offset >>= 1)
{
if (tiX < offset)
{
if (tile[tiX+offset].s0 > tile[tiX].s0) tile[tiX].s0 = tile[tiX+offset].s0;
if (tile[tiX+offset].s1 > tile[tiX].s1) tile[tiX].s1 = tile[tiX+offset].s1;
}
barrier(CLK_LOCAL_MEM_FENCE);
}
if (tiX < MIN_REDUCE_SYNC_SIZE)
{
for (int offset = MIN_REDUCE_SYNC_SIZE; offset > 1; offset >>= 1)
{
if (tile[tiX + offset].s0 > tile[tiX].s0) tile[tiX].s0 = tile[tiX + offset].s0;
if (tile[tiX + offset].s1 > tile[tiX].s1) tile[tiX].s1 = tile[tiX + offset].s1;
barrier(CLK_LOCAL_MEM_FENCE);
}
if (tile[tiX + 1].s0 > tile[tiX].s0) tile[tiX].s0 = tile[tiX + 1].s0;
if (tile[tiX + 1].s1 > tile[tiX].s1) tile[tiX].s1 = tile[tiX + 1].s1;
}
}