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lal_precision.h
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Mon, Nov 11, 14:37

lal_precision.h
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/***************************************************************************
precision.h
-------------------
W. Michael Brown (ORNL)
Data and preprocessor definitions for different precision modes
__________________________________________________________________________
This file is part of the LAMMPS Accelerator Library (LAMMPS_AL)
__________________________________________________________________________
begin :
email : brownw@ornl.gov
***************************************************************************/
#ifndef LAL_PRECISION_H
#define LAL_PRECISION_H
#if defined(USE_CUDART)
#include <cuda_runtime.h>
#endif
struct _lgpu_int2 {
int x; int y;
};
#ifndef int2
#define int2 _lgpu_int2
#endif
struct _lgpu_float2 {
float x; float y;
};
struct _lgpu_float4 {
float x; float y; float z; float w;
};
struct _lgpu_double2 {
double x; double y;
};
struct _lgpu_double4 {
double x; double y; double z; double w;
};
#include <iostream>
inline std::ostream & operator<<(std::ostream &out, const _lgpu_float2 &v) {
out << v.x << " " << v.y;
return out;
}
inline std::ostream & operator<<(std::ostream &out, const _lgpu_float4 &v) {
out << v.x << " " << v.y << " " << v.z;
return out;
}
inline std::ostream & operator<<(std::ostream &out, const _lgpu_double2 &v) {
out << v.x << " " << v.y;
return out;
}
inline std::ostream & operator<<(std::ostream &out, const _lgpu_double4 &v) {
out << v.x << " " << v.y << " " << v.z;
return out;
}
// PRECISION - Precision for rsq, energy, force, and torque calculation
// ACC_PRECISION - Precision for accumulation of energies, forces, and torques
#ifdef _SINGLE_DOUBLE
#define OCL_PRECISION_COMPILE "-D_SINGLE_DOUBLE"
#define PRECISION float
#define ACC_PRECISION double
#define numtyp2 _lgpu_float2
#define numtyp4 _lgpu_float4
#define acctyp4 _lgpu_double4
#endif
#ifdef _DOUBLE_DOUBLE
#define OCL_PRECISION_COMPILE "-D_DOUBLE_DOUBLE"
#define PRECISION double
#define ACC_PRECISION double
#define numtyp2 _lgpu_double2
#define numtyp4 _lgpu_double4
#define acctyp4 _lgpu_double4
#endif
#ifndef PRECISION
#define OCL_PRECISION_COMPILE "-D_SINGLE_SINGLE"
#define PRECISION float
#define ACC_PRECISION float
#define numtyp2 _lgpu_float2
#define numtyp4 _lgpu_float4
#define acctyp4 _lgpu_float4
#endif
enum{SPHERE_SPHERE,SPHERE_ELLIPSE,ELLIPSE_SPHERE,ELLIPSE_ELLIPSE};
// OCL_DEFAULT_VENDOR: preprocessor define for hardware
// specific sizes of OpenCL kernel related constants
#ifdef FERMI_OCL
#define OCL_DEFAULT_VENDOR "fermi"
#endif
#ifdef KEPLER_OCL
#define OCL_DEFAULT_VENDOR "kepler"
#endif
#ifdef CYPRESS_OCL
#define OCL_DEFAULT_VENDOR "cypress"
#endif
#ifdef GENERIC_OCL
#define OCL_DEFAULT_VENDOR "generic"
#endif
#ifdef INTEL_OCL
#define OCL_DEFAULT_VENDOR "intel"
#endif
#ifdef PHI_OCL
#define OCL_DEFAULT_VENDOR "phi"
#endif
#ifndef OCL_DEFAULT_VENDOR
#define OCL_DEFAULT_VENDOR "none"
#endif
// default to 32-bit smallint and other ints, 64-bit bigint: same as defined in src/lmptype.h
#if !defined(LAMMPS_SMALLSMALL) && !defined(LAMMPS_BIGBIG) && !defined(LAMMPS_SMALLBIG)
#define LAMMPS_SMALLBIG
#endif
#ifdef LAMMPS_SMALLBIG
typedef int tagint;
#define OCL_INT_TYPE "-DLAMMPS_SMALLBIG"
#endif
#ifdef LAMMPS_BIGBIG
#include "inttypes.h"
typedef int64_t tagint;
#define OCL_INT_TYPE "-DLAMMPS_BIGBIG"
#endif
#ifdef LAMMPS_SMALLSMALL
typedef int tagint;
#define OCL_INT_TYPE "-DLAMMPS_SMALLSMALL"
#endif
#endif // LAL_PRECISION_H

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