opencl-math-accuracy.c File Reference

#include <CL/cl.h>
#include <ctype.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Include dependency graph for opencl-math-accuracy.c:

Go to the source code of this file.

Data Structures
struct	option_set_t

Macros
#define	CL_TARGET_OPENCL_VERSION   300
#define	NSAMPLES   200000
#define	XMIN   (-8.0f)
#define	XMAX   (8.0f)
#define	FAIL_THRESHOLD   1e-4
#define	BROKEN_THRESHOLD   1e-2
#define	N_OPTION_SETS   ((int)(sizeof(OPTION_SETS) / sizeof(OPTION_SETS[0])))

Enumerations
enum	op_t {   OP_ERF = 0 ,   OP_GELU ,   OP_EXP ,   OP_LOG ,   OP_TANH ,   OP_POW ,   OP_SQRT ,   OP_DIV ,   N_OPS }

Functions
static double	reference (const op_t op, const double x)
static void	host_probe (const float *const in, float *const out, const int n, const op_t op)
static void	canonical_name (const char *in, char *out, const size_t maxlen)
static double	max_error (const float *const got, const float *const in, const int n, const op_t op)
static void	print_header (void)
int	main (void)

Variables
static const char *	KERNEL_SRC
static const char *	OP_NAME [N_OPS] = { "erf", "GELU", "exp", "log", "tanh", "pow", "sqrt", "divide" }
static const option_set_t	OPTION_SETS []

Macro Definition Documentation

BROKEN_THRESHOLD

#define BROKEN_THRESHOLD   1e-2

Definition at line 65 of file opencl-math-accuracy.c.

CL_TARGET_OPENCL_VERSION

#define CL_TARGET_OPENCL_VERSION   300

Definition at line 43 of file opencl-math-accuracy.c.

FAIL_THRESHOLD

#define FAIL_THRESHOLD   1e-4

Definition at line 62 of file opencl-math-accuracy.c.

N_OPTION_SETS

#define N_OPTION_SETS   ((int)(sizeof(OPTION_SETS) / sizeof(OPTION_SETS[0])))

Definition at line 154 of file opencl-math-accuracy.c.

NSAMPLES

#define NSAMPLES   200000

Definition at line 55 of file opencl-math-accuracy.c.

XMAX

#define XMAX   (8.0f)

Definition at line 57 of file opencl-math-accuracy.c.

XMIN

#define XMIN   (-8.0f)

Definition at line 56 of file opencl-math-accuracy.c.

Enumeration Type Documentation

op_t

enum op_t

Enumerator
OP_ERF
OP_GELU
OP_EXP
OP_LOG
OP_TANH
OP_POW
OP_SQRT
OP_DIV
N_OPS

Definition at line 88 of file opencl-math-accuracy.c.

Function Documentation

canonical_name()

static void canonical_name ( const char *  in, char *  out, const size_t  maxlen  )

static

Definition at line 158 of file opencl-math-accuracy.c.

References out.

Referenced by main().

host_probe()

static void host_probe ( const float *const  in, float *const  out, const int  n, const op_t  op  )

static

Definition at line 112 of file opencl-math-accuracy.c.

References i, n, OP_DIV, OP_ERF, OP_EXP, OP_GELU, OP_LOG, OP_POW, OP_SQRT, OP_TANH, out, and x.

Referenced by main().

main()

int main

(

void

)

Definition at line 209 of file opencl-math-accuracy.c.

References BROKEN_THRESHOLD, canonical_name(), d, f, FAIL_THRESHOLD, flags, host_probe(), i, kernel(), KERNEL_SRC, max_error(), N_OPS, N_OPTION_SETS, name, NSAMPLES, OPTION_SETS, out, p, print_header(), XMAX, and XMIN.

max_error()

static double max_error ( const float *const  got, const float *const  in, const int  n, const op_t  op  )

static

Definition at line 178 of file opencl-math-accuracy.c.

References i, n, and reference().

Referenced by dt_iop_channelmixer_shared_roundtrip_error(), and main().

print_header()

static void print_header ( void  )

static

Definition at line 200 of file opencl-math-accuracy.c.

References i, N_OPS, and OP_NAME.

Referenced by main().

reference()

static double reference ( const op_t  op, const double  x  )

static

Definition at line 95 of file opencl-math-accuracy.c.

References log, OP_DIV, OP_ERF, OP_EXP, OP_GELU, OP_LOG, OP_POW, OP_SQRT, OP_TANH, and x.

Referenced by _affine_point_from_polar(), _affine_polar_from_point(), _coverage_runs(), _ellipse_sanitize_config(), _modulegroups_sync_section_label_margins(), _white_preserving_point_from_polar(), _white_preserving_polar_from_point(), _write_missing_map(), extract_color_checker(), and max_error().

Variable Documentation

KERNEL_SRC

const char* KERNEL_SRC

static

Initial value:

=
    "__kernel void probe(__global const float *in, __global float *out, const int op)\n"
    "{\n"
    "  const int i = get_global_id(0);\n"
    "  const float x = in[i];\n"
    "  float r;\n"
    "  switch(op)\n"
    "  {\n"
    "    case 0: r = erf(x); break;\n"
    "    case 1: r = 0.5f * x * (1.0f + erf(x * 0.70710678118654752f)); break;\n"
    "    case 2: r = exp(x); break;\n"
    "    case 3: r = log(fabs(x) + 1.0f); break;\n"
    "    case 4: r = tanh(x); break;\n"
    "    case 5: r = pow(fabs(x) + 1.0f, 2.4f); break;\n"
    "    case 6: r = sqrt(fabs(x)); break;\n"
    "    case 7: r = 1.0f / (fabs(x) + 1.0f); break;\n"
    "    default: r = x; break;\n"
    "  }\n"
    "  out[i] = r;\n"
    "}\n"

Definition at line 67 of file opencl-math-accuracy.c.

Referenced by main().

OP_NAME

const char* OP_NAME[N_OPS] = { "erf", "GELU", "exp", "log", "tanh", "pow", "sqrt", "divide" }

static

Definition at line 90 of file opencl-math-accuracy.c.

Referenced by print_header().

OPTION_SETS

const option_set_t OPTION_SETS[]

static

Initial value:

= {
  { "", "(none)", 0 },
  { "-cl-mad-enable", "-cl-mad-enable", 0 },
  { "-cl-no-signed-zeros", "-cl-no-signed-zeros", 0 },
  { "-cl-denorms-are-zero", "-cl-denorms-are-zero", 0 },
  { "-cl-finite-math-only", "-cl-finite-math-only", 0 },
  { "-cl-unsafe-math-optimizations", "-cl-unsafe-math-optimizations", 0 },
  { "-cl-fast-relaxed-math", "-cl-fast-relaxed-math", 0 },
  { "-cl-mad-enable -cl-no-signed-zeros", "SAFE SET (mad-enable + no-signed-zeros)", 0 },
  { "-cl-fast-relaxed-math -cl-no-signed-zeros -cl-unsafe-math-optimizations",
    "ANSEL LEGACY DEFAULT (fast-relaxed + unsafe)", 1 },
}

Definition at line 142 of file opencl-math-accuracy.c.

Referenced by main().