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THUNDERX2T99: Add Optimized D/Z NRM2 Implementation

tags/v0.2.20^2
Ashwin Sekhar T K 9 years ago
parent
738628e9a8
commit
a3935f0dfb
4 changed files with 672 additions and 12 deletions
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  1. +4
    -0
      kernel/arm64/KERNEL.THUNDERX2T99
  2. +384
    -0
      kernel/arm64/dznrm2_thunderx2t99.c
  3. +272
    -0
      kernel/arm64/dznrm2_thunderx2t99_fast.c
  4. +12
    -12
      kernel/arm64/scnrm2_thunderx2t99.c

+ 4
- 0
kernel/arm64/KERNEL.THUNDERX2T99 View File

@@ -22,6 +22,10 @@ IZAMAXKERNEL = izamax_thunderx2t99.c

SNRM2KERNEL = scnrm2_thunderx2t99.c
CNRM2KERNEL = scnrm2_thunderx2t99.c
#DNRM2KERNEL = dznrm2_thunderx2t99_fast.c
#ZNRM2KERNEL = dznrm2_thunderx2t99_fast.c
DNRM2KERNEL = dznrm2_thunderx2t99.c
ZNRM2KERNEL = dznrm2_thunderx2t99.c

DAXPYKERNEL = daxpy_thunderx2t99.S



+ 384
- 0
kernel/arm64/dznrm2_thunderx2t99.c View File

@@ -0,0 +1,384 @@
/***************************************************************************
Copyright (c) 2017, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/


#include "common.h"

#include <arm_neon.h>

#if defined(SMP)
extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
void *c, BLASLONG ldc, int (*function)(), int nthreads);
#endif

#define N "x0" /* vector length */
#define X "x1" /* X vector address */
#define INC_X "x2" /* X stride */
#define J "x3" /* loop variable */
#define K "x4" /* loop variable */

#if !defined(COMPLEX)
#define INC_SHIFT "3"
#define SZ "8"
#else
#define INC_SHIFT "4"
#define SZ "16"
#endif

#define SSQ "d0"
#define SCALE "d1"
#define REGZERO "d5"
#define REGONE "d6"
#define CUR_MAX "d7"
#define CUR_MAXINV "d8"
#define CUR_MAXINV_V "v8.2d"
#define CUR_MAX_V "v8.2d"

static void nrm2_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x,
double *ssq, double *scale)
{
*ssq = 0.0;
*scale = 0.0;

if (n <= 0) return;

__asm__ __volatile__ (
" mov "N", %[N_] \n"
" mov "X", %[X_] \n"
" mov "INC_X", %[INCX_] \n"
" fmov "SCALE", xzr \n"
" fmov "SSQ", #1.0 \n"
" cmp "N", xzr \n"
" ble .Lnrm2_kernel_L999 \n"
" cmp "INC_X", xzr \n"
" ble .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_F_BEGIN: \n"
" fmov "REGZERO", xzr \n"
" fmov "REGONE", #1.0 \n"
" lsl "INC_X", "INC_X", #"INC_SHIFT" \n"
" mov "J", "N" \n"
" cmp "J", xzr \n"
" beq .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_F_ZERO_SKIP: \n"
" ldr d4, ["X"] \n"
" fcmp d4, "REGZERO" \n"
" bne .Lnrm2_kernel_F_INIT \n"
#if defined(COMPLEX)
" ldr d4, ["X", #8] \n"
" fcmp d4, "REGZERO" \n"
" bne .Lnrm2_kernel_F_INIT_I \n"
#endif
" add "X", "X", "INC_X" \n"
" subs "J", "J", #1 \n"
" beq .Lnrm2_kernel_L999 \n"
" b .Lnrm2_kernel_F_ZERO_SKIP \n"

".Lnrm2_kernel_F_INIT: \n"
" ldr d4, ["X"] \n"
" fabs d4, d4 \n"
" fmax "CUR_MAX", "SCALE", d4 \n"
" fdiv "SCALE", "SCALE", "CUR_MAX" \n"
" fmul "SCALE", "SCALE", "SCALE" \n"
" fmul "SSQ", "SSQ", "SCALE" \n"
" fdiv d4, d4, "CUR_MAX" \n"
" fmul d4, d4, d4 \n"
" fadd "SSQ", "SSQ", d4 \n"
" fmov "SCALE", "CUR_MAX" \n"
#if defined(COMPLEX)
".Lnrm2_kernel_F_INIT_I: \n"
" ldr d3, ["X", #8] \n"
" fabs d3, d3 \n"
" fmax "CUR_MAX", "SCALE", d3 \n"
" fdiv "SCALE", "SCALE", "CUR_MAX" \n"
" fmul "SCALE", "SCALE", "SCALE" \n"
" fmul "SSQ", "SSQ", "SCALE" \n"
" fdiv d3, d3, "CUR_MAX" \n"
" fmul d3, d3, d3 \n"
" fadd "SSQ", "SSQ", d3 \n"
" fmov "SCALE", "CUR_MAX" \n"
#endif
" add "X", "X", "INC_X" \n"
" subs "J", "J", #1 \n"
" beq .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_F_START: \n"
" cmp "INC_X", #"SZ" \n"
" bne .Lnrm2_kernel_F1 \n"
" asr "K", "J", #4 \n"
" cmp "K", xzr \n"
" beq .Lnrm2_kernel_F1 \n"

".Lnrm2_kernel_F: \n"
" ldp q16, q17, ["X"] \n"
" ldp q18, q19, ["X", #32] \n"
" ldp q20, q21, ["X", #64] \n"
" ldp q22, q23, ["X", #96] \n"
" add "X", "X", #128 \n"
" fabs v16.2d, v16.2d \n"
" fabs v17.2d, v17.2d \n"
" fabs v18.2d, v18.2d \n"
" fabs v19.2d, v19.2d \n"
" fabs v20.2d, v20.2d \n"
" fabs v21.2d, v21.2d \n"
" fabs v22.2d, v22.2d \n"
" fabs v23.2d, v23.2d \n"
" fmaxp v24.2d, v16.2d, v17.2d \n"
" fmaxp v25.2d, v18.2d, v19.2d \n"
" fmaxp v26.2d, v20.2d, v21.2d \n"
" fmaxp v27.2d, v22.2d, v23.2d \n"
" fmaxp v24.2d, v24.2d, v25.2d \n"
" fmaxp v26.2d, v26.2d, v27.2d \n"
" fmaxp v24.2d, v24.2d, v26.2d \n"
" fmaxp v24.2d, v24.2d, v24.2d \n"
" fmax "CUR_MAX", "SCALE", d24 \n"
" fdiv "CUR_MAXINV", "REGONE", "CUR_MAX" \n"
" //dup "CUR_MAX_V", v7.d[0] \n"
" fdiv "SCALE", "SCALE", "CUR_MAX" \n"
" fmul "SCALE", "SCALE", "SCALE" \n"
" fmul "SSQ", "SSQ", "SCALE" \n"
" dup "CUR_MAXINV_V", v8.d[0] \n"
" fmul v16.2d, v16.2d, "CUR_MAXINV_V" \n"
" fmul v17.2d, v17.2d, "CUR_MAXINV_V" \n"
" fmul v18.2d, v18.2d, "CUR_MAXINV_V" \n"
" fmul v19.2d, v19.2d, "CUR_MAXINV_V" \n"
" fmul v20.2d, v20.2d, "CUR_MAXINV_V" \n"
" fmul v21.2d, v21.2d, "CUR_MAXINV_V" \n"
" fmul v22.2d, v22.2d, "CUR_MAXINV_V" \n"
" fmul v23.2d, v23.2d, "CUR_MAXINV_V" \n"
" //fdiv v16.2d, v16.2d, "CUR_MAX_V" \n"
" //fdiv v17.2d, v17.2d, "CUR_MAX_V" \n"
" //fdiv v18.2d, v18.2d, "CUR_MAX_V" \n"
" //fdiv v19.2d, v19.2d, "CUR_MAX_V" \n"
" //fdiv v20.2d, v20.2d, "CUR_MAX_V" \n"
" //fdiv v21.2d, v21.2d, "CUR_MAX_V" \n"
" //fdiv v22.2d, v22.2d, "CUR_MAX_V" \n"
" //fdiv v23.2d, v23.2d, "CUR_MAX_V" \n"
" fmul v24.2d, v16.2d, v16.2d \n"
" fmul v25.2d, v17.2d, v17.2d \n"
" fmul v26.2d, v18.2d, v18.2d \n"
" fmul v27.2d, v19.2d, v19.2d \n"
" fmla v24.2d, v20.2d, v20.2d \n"
" fmla v25.2d, v21.2d, v21.2d \n"
" fmla v26.2d, v22.2d, v22.2d \n"
" fmla v27.2d, v23.2d, v23.2d \n"
" fadd v24.2d, v24.2d, v25.2d \n"
" fadd v26.2d, v26.2d, v27.2d \n"
" fadd v24.2d, v24.2d, v26.2d \n"
" faddp d24, v24.2d \n"
" fadd "SSQ", "SSQ", d24 \n"
" fmov "SCALE", "CUR_MAX" \n"
#if defined(COMPLEX)
" ldp q16, q17, ["X"] \n"
" ldp q18, q19, ["X", #32] \n"
" ldp q20, q21, ["X", #64] \n"
" ldp q22, q23, ["X", #96] \n"
" add "X", "X", #128 \n"
" fabs v16.2d, v16.2d \n"
" fabs v17.2d, v17.2d \n"
" fabs v18.2d, v18.2d \n"
" fabs v19.2d, v19.2d \n"
" fabs v20.2d, v20.2d \n"
" fabs v21.2d, v21.2d \n"
" fabs v22.2d, v22.2d \n"
" fabs v23.2d, v23.2d \n"
" fmaxp v24.2d, v16.2d, v17.2d \n"
" fmaxp v25.2d, v18.2d, v19.2d \n"
" fmaxp v26.2d, v20.2d, v21.2d \n"
" fmaxp v27.2d, v22.2d, v23.2d \n"
" fmaxp v24.2d, v24.2d, v25.2d \n"
" fmaxp v26.2d, v26.2d, v27.2d \n"
" fmaxp v24.2d, v24.2d, v26.2d \n"
" fmaxp v24.2d, v24.2d, v24.2d \n"
" fmax "CUR_MAX", "SCALE", d24 \n"
" fdiv "CUR_MAXINV", "REGONE", "CUR_MAX" \n"
" //dup "CUR_MAX_V", v7.d[0] \n"
" fdiv "SCALE", "SCALE", "CUR_MAX" \n"
" fmul "SCALE", "SCALE", "SCALE" \n"
" fmul "SSQ", "SSQ", "SCALE" \n"
" dup "CUR_MAXINV_V", v8.d[0] \n"
" fmul v16.2d, v16.2d, "CUR_MAXINV_V" \n"
" fmul v17.2d, v17.2d, "CUR_MAXINV_V" \n"
" fmul v18.2d, v18.2d, "CUR_MAXINV_V" \n"
" fmul v19.2d, v19.2d, "CUR_MAXINV_V" \n"
" fmul v20.2d, v20.2d, "CUR_MAXINV_V" \n"
" fmul v21.2d, v21.2d, "CUR_MAXINV_V" \n"
" fmul v22.2d, v22.2d, "CUR_MAXINV_V" \n"
" fmul v23.2d, v23.2d, "CUR_MAXINV_V" \n"
" //fdiv v16.2d, v16.2d, "CUR_MAX_V" \n"
" //fdiv v17.2d, v17.2d, "CUR_MAX_V" \n"
" //fdiv v18.2d, v18.2d, "CUR_MAX_V" \n"
" //fdiv v19.2d, v19.2d, "CUR_MAX_V" \n"
" //fdiv v20.2d, v20.2d, "CUR_MAX_V" \n"
" //fdiv v21.2d, v21.2d, "CUR_MAX_V" \n"
" //fdiv v22.2d, v22.2d, "CUR_MAX_V" \n"
" //fdiv v23.2d, v23.2d, "CUR_MAX_V" \n"
" fmul v24.2d, v16.2d, v16.2d \n"
" fmul v25.2d, v17.2d, v17.2d \n"
" fmul v26.2d, v18.2d, v18.2d \n"
" fmul v27.2d, v19.2d, v19.2d \n"
" fmla v24.2d, v20.2d, v20.2d \n"
" fmla v25.2d, v21.2d, v21.2d \n"
" fmla v26.2d, v22.2d, v22.2d \n"
" fmla v27.2d, v23.2d, v23.2d \n"
" fadd v24.2d, v24.2d, v25.2d \n"
" fadd v26.2d, v26.2d, v27.2d \n"
" fadd v24.2d, v24.2d, v26.2d \n"
" faddp d24, v24.2d \n"
" fadd "SSQ", "SSQ", d24 \n"
" fmov "SCALE", "CUR_MAX" \n"
#endif
" subs "K", "K", #1 \n"
" bne .Lnrm2_kernel_F \n"

".Lnrm2_kernel_F_DONE: \n"
" ands "J", "J", #15 \n"
" beq .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_F1: \n"
" ldr d4, ["X"] \n"
" fabs d4, d4 \n"
" fmax "CUR_MAX", "SCALE", d4 \n"
" fdiv "SCALE", "SCALE", "CUR_MAX" \n"
" fmul "SCALE", "SCALE", "SCALE" \n"
" fmul "SSQ", "SSQ", "SCALE" \n"
" fdiv d4, d4, "CUR_MAX" \n"
" fmul d4, d4, d4 \n"
" fadd "SSQ", "SSQ", d4 \n"
" fmov "SCALE", "CUR_MAX" \n"
#if defined(COMPLEX)
" ldr d3, ["X", #8] \n"
" fabs d3, d3 \n"
" fmax "CUR_MAX", "SCALE", d3 \n"
" fdiv "SCALE", "SCALE", "CUR_MAX" \n"
" fmul "SCALE", "SCALE", "SCALE" \n"
" fmul "SSQ", "SSQ", "SCALE" \n"
" fdiv d3, d3, "CUR_MAX" \n"
" fmul d3, d3, d3 \n"
" fadd "SSQ", "SSQ", d3 \n"
" fmov "SCALE", "CUR_MAX" \n"
#endif
" add "X", "X", "INC_X" \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_F1 \n"

".Lnrm2_kernel_L999: \n"
" str "SSQ", [%[SSQ_]] \n"
" str "SCALE", [%[SCALE_]] \n"

:
: [SSQ_] "r" (ssq), //%0
[SCALE_] "r" (scale), //%1
[N_] "r" (n), //%2
[X_] "r" (x), //%3
[INCX_] "r" (inc_x) //%4
: "cc",
"memory",
"x0", "x1", "x2", "x3", "x4", "x5",
"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7"
);

}

#if defined(SMP)
static int nrm2_thread_function(BLASLONG n, BLASLONG dummy0,
BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *dummy3,
BLASLONG dummy4, FLOAT *result, BLASLONG dummy5)
{
nrm2_compute(n, x, inc_x, result, result + 1);

return 0;
}
#endif

FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
{
#if defined(SMP)
int nthreads;
FLOAT dummy_alpha[2];
#endif
FLOAT ssq, scale;

if (n <= 0 || inc_x <= 0) return 0.0;

#if defined(SMP)
nthreads = num_cpu_avail(1);

if (n <= 10000)
nthreads = 1;

if (nthreads == 1) {
nrm2_compute(n, x, inc_x, &ssq, &scale);
} else {
int mode, i;
char result[MAX_CPU_NUMBER * sizeof(double) * 2];
double *ptr;

#if !defined(COMPLEX)
mode = BLAS_DOUBLE | BLAS_REAL;
#else
mode = BLAS_DOUBLE | BLAS_COMPLEX;
#endif

blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
x, inc_x, NULL, 0, result, 0,
( void *)nrm2_thread_function, nthreads);

scale = 0.0;
ssq = 1.0;
ptr = (double *)result;
for (i = 0; i < nthreads; i++) {
FLOAT cur_scale, cur_ssq;

cur_ssq = *ptr;
cur_scale = *(ptr + 1);

if (cur_scale != 0) {
if (cur_scale > scale) {
scale = (scale / cur_scale);
ssq = ssq * scale * scale;
ssq += cur_ssq;
scale = cur_scale;
} else {
cur_scale = (cur_scale / scale);
cur_ssq = cur_ssq * cur_scale * cur_scale;
ssq += cur_ssq;
}
}

ptr = (double *)(((char *)ptr) + sizeof(double) * 2);
}
}
#else
nrm2_compute(n, x, inc_x, &ssq, &scale);
#endif
ssq = sqrt(ssq) * scale;

return ssq;
}

+ 272
- 0
kernel/arm64/dznrm2_thunderx2t99_fast.c View File

@@ -0,0 +1,272 @@
/***************************************************************************
Copyright (c) 2017, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/


#include "common.h"

#include <arm_neon.h>

#if defined(SMP)
extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
void *c, BLASLONG ldc, int (*function)(), int nthreads);
#endif

#define N "x0" /* vector length */
#define X "x1" /* X vector address */
#define INC_X "x2" /* X stride */
#define J "x5" /* loop variable */

#define TMPF "d16"
#define SSQ "d0"

#if !defined(COMPLEX)
#define N_DIV_SHIFT "5"
#define N_REM_MASK "31"
#define INC_SHIFT "3"
#else
#define N_DIV_SHIFT "4"
#define N_REM_MASK "15"
#define INC_SHIFT "4"
#endif


#define KERNEL_F \
"ldp q16, q17, ["X"] \n" \
"ldp q18, q19, ["X", #32] \n" \
"ldp q20, q21, ["X", #64] \n" \
"ldp q22, q23, ["X", #96] \n" \
"ldp q24, q25, ["X", #128] \n" \
"ldp q26, q27, ["X", #160] \n" \
"ldp q28, q29, ["X", #192] \n" \
"ldp q30, q31, ["X", #224] \n" \
"add "X", "X", #256 \n" \
"fmla v0.2d, v16.2d, v16.2d \n" \
"fmla v1.2d, v17.2d, v17.2d \n" \
"fmla v2.2d, v18.2d, v18.2d \n" \
"fmla v3.2d, v19.2d, v19.2d \n" \
"prfm PLDL1KEEP, ["X", #1024] \n" \
"prfm PLDL1KEEP, ["X", #1024+64] \n" \
"fmla v4.2d, v20.2d, v20.2d \n" \
"fmla v5.2d, v21.2d, v21.2d \n" \
"fmla v6.2d, v22.2d, v22.2d \n" \
"fmla v7.2d, v23.2d, v23.2d \n" \
"prfm PLDL1KEEP, ["X", #1024+128] \n" \
"prfm PLDL1KEEP, ["X", #1024+192] \n" \
"fmla v0.2d, v24.2d, v24.2d \n" \
"fmla v1.2d, v25.2d, v25.2d \n" \
"fmla v2.2d, v26.2d, v26.2d \n" \
"fmla v3.2d, v27.2d, v27.2d \n" \
"fmla v4.2d, v28.2d, v28.2d \n" \
"fmla v5.2d, v29.2d, v29.2d \n" \
"fmla v6.2d, v30.2d, v30.2d \n" \
"fmla v7.2d, v31.2d, v31.2d \n"


#if !defined(COMPLEX)
#define KERNEL_F1 \
"ldr "TMPF", ["X"] \n" \
"add "X", "X", "INC_X" \n" \
"fmadd "SSQ", "TMPF", "TMPF", "SSQ" \n"

#define KERNEL_F_FINALIZE \
"fadd v0.2d, v0.2d, v1.2d \n" \
"fadd v2.2d, v2.2d, v3.2d \n" \
"fadd v4.2d, v4.2d, v5.2d \n" \
"fadd v6.2d, v6.2d, v7.2d \n" \
"fadd v0.2d, v0.2d, v2.2d \n" \
"fadd v4.2d, v4.2d, v6.2d \n" \
"fadd v0.2d, v0.2d, v4.2d \n" \
"faddp "SSQ", v0.2d \n"

#define KERNEL_FINALIZE \
""
#else
#define KERNEL_F1 \
"ldr q16, ["X"] \n" \
"add "X", "X", "INC_X" \n" \
"fmla v0.2d, v16.2d, v16.2d \n"

#define KERNEL_F_FINALIZE \
"fadd v0.2d, v0.2d, v1.2d \n" \
"fadd v2.2d, v2.2d, v3.2d \n" \
"fadd v4.2d, v4.2d, v5.2d \n" \
"fadd v6.2d, v6.2d, v7.2d \n" \
"fadd v0.2d, v0.2d, v2.2d \n" \
"fadd v4.2d, v4.2d, v6.2d \n" \
"fadd v0.2d, v0.2d, v4.2d \n"

#define KERNEL_FINALIZE \
"faddp "SSQ", v0.2d \n"
#endif

static double nrm2_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x)
{
double ret = 0.0 ;

if (n <= 0) return ret;

__asm__ __volatile__ (
" mov "N", %[N_] \n"
" mov "X", %[X_] \n"
" mov "INC_X", %[INCX_] \n"
" fmov "SSQ", xzr \n"
" fmov d1, xzr \n"
" fmov d2, xzr \n"
" fmov d3, xzr \n"
" fmov d4, xzr \n"
" fmov d5, xzr \n"
" fmov d6, xzr \n"
" fmov d7, xzr \n"
" cmp "N", xzr \n"
" ble .Lnrm2_kernel_L999 \n"
" cmp "INC_X", xzr \n"
" ble .Lnrm2_kernel_L999 \n"
" cmp "INC_X", #1 \n"
" bne .Lnrm2_kernel_S_BEGIN \n"

".Lnrm2_kernel_F_BEGIN: \n"
" lsl "INC_X", "INC_X", #"INC_SHIFT" \n"
" asr "J", "N", #"N_DIV_SHIFT" \n"
" cmp "J", xzr \n"
" beq .Lnrm2_kernel_F1 \n"

" .align 5 \n"
".Lnrm2_kernel_F: \n"
" "KERNEL_F" \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_F \n"
" "KERNEL_F_FINALIZE" \n"

".Lnrm2_kernel_F1: \n"
" ands "J", "N", #"N_REM_MASK" \n"
" ble .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_F10: \n"
" "KERNEL_F1" \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_F10 \n"
" b .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_S_BEGIN: \n"
" lsl "INC_X", "INC_X", #"INC_SHIFT" \n"
" asr "J", "N", #2 \n"
" cmp "J", xzr \n"
" ble .Lnrm2_kernel_S1 \n"

".Lnrm2_kernel_S4: \n"
" "KERNEL_F1" \n"
" "KERNEL_F1" \n"
" "KERNEL_F1" \n"
" "KERNEL_F1" \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_S4 \n"

".Lnrm2_kernel_S1: \n"
" ands "J", "N", #3 \n"
" ble .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_S10: \n"
" "KERNEL_F1" \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_S10 \n"

".Lnrm2_kernel_L999: \n"
" "KERNEL_FINALIZE" \n"
" str "SSQ", [%[RET_]] \n"

:
: [RET_] "r" (&ret), //%0
[N_] "r" (n), //%1
[X_] "r" (x), //%2
[INCX_] "r" (inc_x) //%3
: "cc",
"memory",
"x0", "x1", "x2", "x3", "x4", "x5",
"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7"
);

return ret;
}

#if defined(SMP)
static int nrm2_thread_function(BLASLONG n, BLASLONG dummy0,
BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *dummy3,
BLASLONG dummy4, FLOAT *result, BLASLONG dummy5)
{
*(double *)result = nrm2_compute(n, x, inc_x);

return 0;
}
#endif

FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
{
#if defined(SMP)
int nthreads;
FLOAT dummy_alpha[2];
#endif
FLOAT nrm2 = 0.0;

if (n <= 0 || inc_x <= 0) return 0.0;

#if defined(SMP)
nthreads = num_cpu_avail(1);

if (n <= 10000)
nthreads = 1;

if (nthreads == 1) {
nrm2 = nrm2_compute(n, x, inc_x);
} else {
int mode, i;
char result[MAX_CPU_NUMBER * sizeof(double) * 2];
double *ptr;

#if !defined(COMPLEX)
mode = BLAS_DOUBLE | BLAS_REAL;
#else
mode = BLAS_DOUBLE | BLAS_COMPLEX;
#endif

blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
x, inc_x, NULL, 0, result, 0,
( void *)nrm2_thread_function, nthreads);

ptr = (double *)result;
for (i = 0; i < nthreads; i++) {
nrm2 = nrm2 + (*ptr);
ptr = (double *)(((char *)ptr) + sizeof(double) * 2);
}
}
#else
nrm2 = nrm2_compute(n, x, inc_x);
#endif
nrm2 = sqrt(nrm2);

return nrm2;
}

+ 12
- 12
kernel/arm64/scnrm2_thunderx2t99.c View File

@@ -40,7 +40,7 @@ extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n
#define N "x0" /* vector length */
#define X "x1" /* X vector address */
#define INC_X "x2" /* X stride */
#define I "x5" /* loop variable */
#define J "x5" /* loop variable */

#define TMPF "s16"
#define TMPFD "d17"
@@ -128,7 +128,7 @@ extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n
#define N "x0" /* vector length */
#define X "x1" /* X vector address */
#define INC_X "x2" /* X stride */
#define I "x5" /* loop variable */
#define J "x5" /* loop variable */

#define TMPF "d16"
#define SSQD "d0"
@@ -234,31 +234,31 @@ static double nrm2_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x)
" bne .Lnrm2_kernel_S_BEGIN \n"

".Lnrm2_kernel_F_BEGIN: \n"
" asr "I", "N", #"N_DIV_SHIFT" \n"
" cmp "I", xzr \n"
" asr "J", "N", #"N_DIV_SHIFT" \n"
" cmp "J", xzr \n"
" beq .Lnrm2_kernel_S_BEGIN \n"

" .align 5 \n"
".Lnrm2_kernel_F: \n"
" "KERNEL_F" \n"
" subs "I", "I", #1 \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_F \n"
" "KERNEL_F_FINALIZE" \n"

".Lnrm2_kernel_F1: \n"
" ands "I", "N", #"N_REM_MASK" \n"
" ands "J", "N", #"N_REM_MASK" \n"
" ble .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_F10: \n"
" "KERNEL_F1" \n"
" subs "I", "I", #1 \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_F10 \n"
" b .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_S_BEGIN: \n"
" lsl "INC_X", "INC_X", #"INC_SHIFT" \n"
" asr "I", "N", #2 \n"
" cmp "I", xzr \n"
" asr "J", "N", #2 \n"
" cmp "J", xzr \n"
" ble .Lnrm2_kernel_S1 \n"

".Lnrm2_kernel_S4: \n"
@@ -266,16 +266,16 @@ static double nrm2_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x)
" "KERNEL_S1" \n"
" "KERNEL_S1" \n"
" "KERNEL_S1" \n"
" subs "I", "I", #1 \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_S4 \n"

".Lnrm2_kernel_S1: \n"
" ands "I", "N", #3 \n"
" ands "J", "N", #3 \n"
" ble .Lnrm2_kernel_L999 \n"

".Lnrm2_kernel_S10: \n"
" "KERNEL_S1" \n"
" subs "I", "I", #1 \n"
" subs "J", "J", #1 \n"
" bne .Lnrm2_kernel_S10 \n"

".Lnrm2_kernel_L999: \n"


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