Files
OpenBLAS/interface/bf16to.c
Chen, Guobing deaeb6c5b8 Add bfloat16 based dot and conversion with single/double
1. Added bfloat16 based dot as new API: shdot
2. Implemented generic kernel and cooperlake-specific (AVX512-BF16) kernel for shdot
3. Added 4 conversion APIs for bfloat16 data type <=> single/double: shstobf16 shdtobf16 sbf16tos dbf16tod
     shstobf16 -- convert single float array to bfloat16 array
     shdtobf16 -- convert double float array to bfloat16 array
     sbf16tos  -- convert bfloat16 array to single float array
     dbf16tod  -- convert bfloat16 array to double float array
4. Implemented generic kernels for all 4 conversion APIs, and cooperlake-specific kernel for shstobf16 and shdtobf16
5. Update level1 thread facilitate functions and macros to support multi-threading for these new APIs
6. Fix Cooperlake platform detection/specify issue when under dynamic-arch building
7. Change the typedef of bfloat16 from unsigned short to more strict uint16_t

Signed-off-by: Chen, Guobing <guobing.chen@intel.com>
2020-09-04 02:31:25 +08:00

63 lines
1.3 KiB
C

#include <stdio.h>
#include "common.h"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif
#if defined(DOUBLE_PREC)
#define FLOAT_TYPE double
#elif defined(SINGLE_PREC)
#define FLOAT_TYPE float
#else
#endif
#ifndef CBLAS
void NAME(blasint *N, bfloat16 *in, blasint *INC_IN, FLOAT_TYPE *out, blasint *INC_OUT){
BLASLONG n = *N;
BLASLONG inc_in = *INC_IN;
BLASLONG inc_out = *INC_OUT;
PRINT_DEBUG_NAME;
if (n <= 0) return;
IDEBUG_START;
FUNCTION_PROFILE_START();
if (inc_in < 0) in -= (n - 1) * inc_in;
if (inc_out < 0) out -= (n - 1) * inc_out;
#if defined(DOUBLE_PREC)
D_BF16_TO_K(n, in, inc_in, out, inc_out);
#elif defined(SINGLE_PREC)
S_BF16_TO_K(n, in, inc_in, out, inc_out);
#else
#endif
FUNCTION_PROFILE_END(1, 2 * n, 2 * n);
IDEBUG_END;
}
#else
void CNAME(blasint n, bfloat16 * in, blasint inc_in, FLOAT_TYPE * out, blasint inc_out){
PRINT_DEBUG_CNAME;
if (n <= 0) return;
IDEBUG_START;
FUNCTION_PROFILE_START();
if (inc_in < 0) in -= (n - 1) * inc_in;
if (inc_out < 0) out -= (n - 1) * inc_out;
#if defined(DOUBLE_PREC)
D_BF16_TO_K(n, in, inc_in, out, inc_out);
#elif defined(SINGLE_PREC)
S_BF16_TO_K(n, in, inc_in, out, inc_out);
#else
#endif
FUNCTION_PROFILE_END(1, 2 * n, 2 * n);
IDEBUG_END;
}
#endif