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lammps/lib/gpu/lal_preprocessor.h
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lal_preprocessor.h
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// **************************************************************************
// preprocessor.cu
// -------------------
// W. Michael Brown (ORNL)
//
// Device code for CUDA-specific preprocessor definitions
//
// __________________________________________________________________________
// This file is part of the LAMMPS Accelerator Library (LAMMPS_AL)
// __________________________________________________________________________
//
// begin :
// email : brownw@ornl.gov
// ***************************************************************************/
//*************************************************************************
// Preprocessor Definitions
//
// Note: It is assumed that constants with the same names are defined with
// the same values in all files.
//
// ARCH
// Definition: Architecture number for accelerator
// MEM_THREADS
// Definition: Number of threads with sequential ids accessing memory
// simultaneously on multiprocessor
// WARP_SIZE:
// Definition: Number of threads guaranteed to be on the same instruction
// THREADS_PER_ATOM
// Definition: Default number of threads assigned per atom for pair styles
// Restructions: Must be power of 2; THREADS_PER_ATOM<=WARP_SIZE
// THREADS_PER_CHARGE
// Definition: Default number of threads assigned per atom for pair styles
// with charge
// Restructions: Must be power of 2; THREADS_PER_ATOM<=WARP_SIZE
// PPPM_MAX_SPLINE
// Definition: Maximum order for splines in PPPM
// PPPM_BLOCK_1D
// Definition: Thread block size for PPPM kernels
// Restrictions: PPPM_BLOCK_1D>=PPPM_MAX_SPLINE*PPPM_MAX_SPLINE
// PPPM_BLOCK_1D%32==0
// BLOCK_PAIR
// Definition: Default thread block size for pair styles
// Restrictions:
// MAX_SHARED_TYPES 8
// Definition: Max # of atom type params can be stored in shared memory
// Restrictions: MAX_SHARED_TYPES*MAX_SHARED_TYPES<=BLOCK_PAIR
// BLOCK_CELL_2D
// Definition: Default block size in each dimension for cell list builds
// and matrix transpose
// BLOCK_CELL_ID
// Definition: Default block size for binning atoms in cell list builds
// BLOCK_NBOR_BUILD
// Definition: Default block size for neighbor list builds
// BLOCK_BIO_PAIR
// Definition: Default thread block size for "bio" pair styles
// MAX_BIO_SHARED_TYPES
// Definition: Max # of atom type params can be stored in shared memory
// Restrictions: MAX_BIO_SHARED_TYPES<=BLOCK_BIO_PAIR*2 &&
// MAX_BIO_SHARED_TYPES>=BLOCK_BIO_PAIR
//
//*************************************************************************/
// -------------------------------------------------------------------------
// CUDA DEFINITIONS
// -------------------------------------------------------------------------
#ifdef NV_KERNEL
#define GLOBAL_ID_X threadIdx.x+mul24(blockIdx.x,blockDim.x)
#define GLOBAL_ID_Y threadIdx.y+mul24(blockIdx.y,blockDim.y)
#define GLOBAL_SIZE_X mul24(gridDim.x,blockDim.x);
#define GLOBAL_SIZE_Y mul24(gridDim.y,blockDim.y);
#define THREAD_ID_X threadIdx.x
#define THREAD_ID_Y threadIdx.y
#define BLOCK_ID_X blockIdx.x
#define BLOCK_ID_Y blockIdx.y
#define BLOCK_SIZE_X blockDim.x
#define BLOCK_SIZE_Y blockDim.y
#define __kernel extern "C" __global__
#define __local __shared__
#define __global
#define atom_add atomicAdd
#define ucl_inline static __inline__ __device__
#ifdef __CUDA_ARCH__
#define ARCH __CUDA_ARCH__
#else
#define ARCH 100
#endif
#if (ARCH < 200)
#define THREADS_PER_ATOM 1
#define THREADS_PER_CHARGE 16
#define BLOCK_NBOR_BUILD 64
#define BLOCK_PAIR 64
#define BLOCK_BIO_PAIR 64
#define MAX_SHARED_TYPES 8
#else
#define THREADS_PER_ATOM 4
#define THREADS_PER_CHARGE 8
#define BLOCK_NBOR_BUILD 128
#define BLOCK_PAIR 128
#define BLOCK_BIO_PAIR 128
#define MAX_SHARED_TYPES 11
#endif
#define WARP_SIZE 32
#define PPPM_BLOCK_1D 64
#define BLOCK_CELL_2D 8
#define BLOCK_CELL_ID 128
#define MAX_BIO_SHARED_TYPES 128
#ifdef _DOUBLE_DOUBLE
ucl_inline double4 fetch_pos(const int& i, const double4 *pos) { return pos[i]; }
ucl_inline double fetch_q(const int& i, const double *q) { return q[i]; }
#endif
#if (__CUDA_ARCH__ < 200)
#define fast_mul __mul24
#define MEM_THREADS 16
#else
#define fast_mul(X,Y) (X)*(Y)
#define MEM_THREADS 32
#endif
#ifdef CUDA_PRE_THREE
struct __builtin_align__(16) _double4
{
double x, y, z, w;
};
typedef struct _double4 double4;
#endif
#ifdef _DOUBLE_DOUBLE
#define ucl_exp exp
#define ucl_powr pow
#define ucl_atan atan
#define ucl_cbrt cbrt
#define ucl_ceil ceil
#define ucl_abs fabs
#define ucl_rsqrt rsqrt
#define ucl_sqrt sqrt
#define ucl_recip(x) ((numtyp)1.0/(x))
#else
#define ucl_atan atanf
#define ucl_cbrt cbrtf
#define ucl_ceil ceilf
#define ucl_abs fabsf
#define ucl_recip(x) ((numtyp)1.0/(x))
#define ucl_rsqrt rsqrtf
#define ucl_sqrt sqrtf
#ifdef NO_HARDWARE_TRANSCENDENTALS
#define ucl_exp expf
#define ucl_powr powf
#else
#define ucl_exp __expf
#define ucl_powr __powf
#endif
#endif
#endif
// -------------------------------------------------------------------------
// NVIDIA FERMI OPENCL DEFINITIONS
// -------------------------------------------------------------------------
#ifdef FERMI_OCL
#define USE_OPENCL
#define fast_mul(X,Y) (X)*(Y)
#define ARCH 0
#define DRIVER 0
#define MEM_THREADS 32
#define THREADS_PER_ATOM 4
#define THREADS_PER_CHARGE 8
#define BLOCK_PAIR 128
#define MAX_SHARED_TYPES 11
#define BLOCK_NBOR_BUILD 128
#define BLOCK_BIO_PAIR 128
#define WARP_SIZE 32
#define PPPM_BLOCK_1D 64
#define BLOCK_CELL_2D 8
#define BLOCK_CELL_ID 128
#define MAX_BIO_SHARED_TYPES 128
#pragma OPENCL EXTENSION cl_khr_fp64: enable
#endif
// -------------------------------------------------------------------------
// AMD CYPRESS OPENCL DEFINITIONS
// -------------------------------------------------------------------------
#ifdef CYPRESS_OCL
#define USE_OPENCL
#define fast_mul(X,Y) (X)*(Y)
#define ARCH 0
#define DRIVER 0
#define MEM_THREADS 32
#define THREADS_PER_ATOM 4
#define THREADS_PER_CHARGE 8
#define BLOCK_PAIR 128
#define MAX_SHARED_TYPES 8
#define BLOCK_NBOR_BUILD 64
#define BLOCK_BIO_PAIR 64
#define WARP_SIZE 64
#define PPPM_BLOCK_1D 64
#define BLOCK_CELL_2D 8
#define BLOCK_CELL_ID 128
#define MAX_BIO_SHARED_TYPES 128
#pragma OPENCL EXTENSION cl_khr_fp64: enable
#endif
// -------------------------------------------------------------------------
// GENERIC OPENCL DEFINITIONS
// -------------------------------------------------------------------------
#ifdef GENERIC_OCL
#define USE_OPENCL
#define fast_mul mul24
#define ARCH 0
#define DRIVER 0
#define MEM_THREADS 16
#define THREADS_PER_ATOM 1
#define THREADS_PER_CHARGE 1
#define BLOCK_PAIR 64
#define MAX_SHARED_TYPES 8
#define BLOCK_NBOR_BUILD 64
#define BLOCK_BIO_PAIR 64
#define WARP_SIZE 1
#define PPPM_BLOCK_1D 64
#define BLOCK_CELL_2D 8
#define BLOCK_CELL_ID 128
#define MAX_BIO_SHARED_TYPES 128
#pragma OPENCL EXTENSION cl_khr_fp64: enable
#endif
// -------------------------------------------------------------------------
// OPENCL Stuff for All Hardware
// -------------------------------------------------------------------------
#ifdef USE_OPENCL
#define GLOBAL_ID_X get_global_id(0)
#define THREAD_ID_X get_local_id(0)
#define BLOCK_ID_X get_group_id(0)
#define BLOCK_SIZE_X get_local_size(0)
#define GLOBAL_SIZE_X get_global_size(0)
#define THREAD_ID_Y get_local_id(1)
#define BLOCK_ID_Y get_group_id(1)
#define __syncthreads() barrier(CLK_LOCAL_MEM_FENCE)
#define ucl_inline inline
#define fetch_pos(i,y) x_[i]
#define fetch_q(i,y) q_[i]
#define ucl_atan atan
#define ucl_cbrt cbrt
#define ucl_ceil ceil
#define ucl_abs fabs
#ifdef _DOUBLE_DOUBLE
#define NO_HARDWARE_TRANSCENDENTALS
#endif
#ifdef NO_HARDWARE_TRANSCENDENTALS
#define ucl_exp exp
#define ucl_powr powr
#define ucl_rsqrt rsqrt
#define ucl_sqrt sqrt
#define ucl_recip(x) ((numtyp)1.0/(x))
#else
#define ucl_exp native_exp
#define ucl_powr native_powr
#define ucl_rsqrt native_rsqrt
#define ucl_sqrt native_sqrt
#define ucl_recip native_recip
#endif
#endif
// -------------------------------------------------------------------------
// ARCHITECTURE INDEPENDENT DEFINITIONS
// -------------------------------------------------------------------------
#define PPPM_MAX_SPLINE 8
#ifdef _DOUBLE_DOUBLE
#define numtyp double
#define numtyp2 double2
#define numtyp4 double4
#define acctyp double
#define acctyp4 double4
#endif
#ifdef _SINGLE_DOUBLE
#define numtyp float
#define numtyp2 float2
#define numtyp4 float4
#define acctyp double
#define acctyp4 double4
#endif
#ifndef numtyp
#define numtyp float
#define numtyp2 float2
#define numtyp4 float4
#define acctyp float
#define acctyp4 float4
#endif
#define EWALD_F (numtyp)1.12837917
#define EWALD_P (numtyp)0.3275911
#define A1 (numtyp)0.254829592
#define A2 (numtyp)-0.284496736
#define A3 (numtyp)1.421413741
#define A4 (numtyp)-1.453152027
#define A5 (numtyp)1.061405429
#define SBBITS 30
#define NEIGHMASK 0x3FFFFFFF
ucl_inline int sbmask(int j) { return j >> SBBITS & 3; }
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