Files
OpenBLAS/interface/bf16dot.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

53 lines
957 B
C

#include <stdio.h>
#include "common.h"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif
#ifndef CBLAS
float NAME(blasint *N, bfloat16 *x, blasint *INCX, bfloat16 *y, blasint *INCY){
BLASLONG n = *N;
BLASLONG incx = *INCX;
BLASLONG incy = *INCY;
float ret;
PRINT_DEBUG_NAME;
if (n <= 0) return 0.;
IDEBUG_START;
FUNCTION_PROFILE_START();
if (incx < 0) x -= (n - 1) * incx;
if (incy < 0) y -= (n - 1) * incy;
ret = BF16_DOT_K(n, x, incx, y, incy);
FUNCTION_PROFILE_END(1, 2 * n, 2 * n);
IDEBUG_END;
return ret;
}
#else
float CNAME(blasint n, bfloat16 *x, blasint incx, bfloat16 *y, blasint incy){
float ret;
PRINT_DEBUG_CNAME;
if (n <= 0) return 0.;
IDEBUG_START;
FUNCTION_PROFILE_START();
if (incx < 0) x -= (n - 1) * incx;
if (incy < 0) y -= (n - 1) * incy;
ret = BF16_DOT_K(n, x, incx, y, incy);
FUNCTION_PROFILE_END(1, 2 * n, 2 * n);
IDEBUG_END;
return ret;
}
#endif