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Merge pull request #4959 from CDAC-Bengaluru/level-1-sve
SVE Implementation for Level-1 BLAS Routines
2 parents 89f02ed + 3368a4e commit 229d8a0

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‎CONTRIBUTORS.md‎

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@@ -229,3 +229,6 @@ In chronological order:
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* Christopher Daley <https://github.com/cdaley>
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* [2024-01-24] Optimize GEMV forwarding on ARM64 systems
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* Aniket P. Garade <https://github.com/garadeaniket> Sushil Pratap Singh <https://github.com/SushilPratap04> Juliya James <https://github.com/Juliya32>
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* [2024-12-13] Optimized swap and rot Level-1 BLAS routines with ARM SVE

‎kernel/arm64/KERNEL.ARMV8SVE‎

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@@ -64,8 +64,8 @@ DAXPYKERNEL = daxpy_thunderx2t99.S
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CAXPYKERNEL = zaxpy.S
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ZAXPYKERNEL = zaxpy.S
6666

67-
SROTKERNEL = rot.S
68-
DROTKERNEL = rot.S
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SROTKERNEL = rot.c
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DROTKERNEL = rot.c
6969
CROTKERNEL = zrot.S
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ZROTKERNEL = zrot.S
7171

@@ -94,8 +94,8 @@ DCOPYKERNEL = copy_thunderx2t99.c
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CCOPYKERNEL = copy_thunderx2t99.c
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ZCOPYKERNEL = copy_thunderx2t99.c
9696

97-
SSWAPKERNEL = swap_thunderx2t99.S
98-
DSWAPKERNEL = swap_thunderx2t99.S
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SSWAPKERNEL = swap.c
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DSWAPKERNEL = swap.c
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CSWAPKERNEL = swap_thunderx2t99.S
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ZSWAPKERNEL = swap_thunderx2t99.S
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‎kernel/arm64/rot.c‎

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/*******************************************************************************
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Copyright (c) 2015, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
9+
2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
11+
the documentation and/or other materials provided with the
12+
distribution.
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3. Neither the name of the OpenBLAS project nor the names of
14+
its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
16+
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18+
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************/
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#include "common.h"
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#include "rot_kernel_sve.c"
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#include "rot_kernel_c.c"
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int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT c, FLOAT s)
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{
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if (n <= 0)
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return (0);
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if (inc_x == 1 && inc_y == 1)
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rot_kernel_sve(n, x, y, c, s);
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else
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rot_kernel_c(n, x, inc_x, y, inc_y, c, s);
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return (0);
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}

‎kernel/arm64/rot_kernel_c.c‎

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/*******************************************************************************
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Copyright (c) 2015, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
9+
2. Redistributions in binary form must reproduce the above copyright
10+
notice, this list of conditions and the following disclaimer in
11+
the documentation and/or other materials provided with the
12+
distribution.
13+
3. Neither the name of the OpenBLAS project nor the names of
14+
its contributors may be used to endorse or promote products
15+
derived from this software without specific prior written permission.
16+
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17+
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18+
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19+
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
20+
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21+
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22+
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24+
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************/
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#include "common.h"
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static int rot_kernel_c(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT c, FLOAT s)
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{
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BLASLONG i = 0;
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BLASLONG ix = 0, iy = 0;
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FLOAT temp;
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while (i < n)
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{
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temp = c * x[ix] + s * y[iy];
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y[iy] = c * y[iy] - s * x[ix];
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x[ix] = temp;
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ix += inc_x;
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iy += inc_y;
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i++;
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}
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return (0);
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}

‎kernel/arm64/rot_kernel_sve.c‎

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/*******************************************************************************
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Copyright (c) 2015, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
5+
modification, are permitted provided that the following conditions are
6+
met:
7+
1. Redistributions of source code must retain the above copyright
8+
notice, this list of conditions and the following disclaimer.
9+
2. Redistributions in binary form must reproduce the above copyright
10+
notice, this list of conditions and the following disclaimer in
11+
the documentation and/or other materials provided with the
12+
distribution.
13+
3. Neither the name of the OpenBLAS project nor the names of
14+
its contributors may be used to endorse or promote products
15+
derived from this software without specific prior written permission.
16+
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17+
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18+
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19+
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
20+
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21+
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22+
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23+
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24+
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
25+
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26+
*******************************************************************************/
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#include "common.h"
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#include <arm_sve.h>
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#ifdef DOUBLE
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#define SVE_TYPE svfloat64_t
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#define SVE_ZERO svdup_f64(0.0)
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#define SVE_WHILELT svwhilelt_b64
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#define SVE_ALL svptrue_b64()
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#define SVE_WIDTH svcntd()
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#else
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#define SVE_TYPE svfloat32_t
38+
#define SVE_ZERO svdup_f32(0.0)
39+
#define SVE_WHILELT svwhilelt_b32
40+
#define SVE_ALL svptrue_b32()
41+
#define SVE_WIDTH svcntw()
42+
#endif
43+
44+
static int rot_kernel_sve(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT c, FLOAT s)
45+
{
46+
for (BLASLONG i = 0; i < n; i += SVE_WIDTH)
47+
{
48+
svbool_t pg = SVE_WHILELT((uint64_t)i, (uint64_t)n);
49+
SVE_TYPE x_vec = svld1(pg, &x[i]);
50+
SVE_TYPE y_vec = svld1(pg, &y[i]);
51+
SVE_TYPE cx_vec = svmul_z(pg, x_vec, c);
52+
SVE_TYPE sy_vec = svmul_z(pg, y_vec, s);
53+
SVE_TYPE sx_vec = svmul_z(pg, x_vec, s);
54+
SVE_TYPE cy_vec = svmul_z(pg, y_vec, c);
55+
svst1(pg, &x[i], svadd_z(pg, cx_vec, sy_vec));
56+
svst1(pg, &y[i], svsub_z(pg, cy_vec, sx_vec));
57+
}
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return (0);
59+
}

‎kernel/arm64/swap.c‎

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/***************************************************************************
2+
Copyright (c) 2013, The OpenBLAS Project
3+
All rights reserved.
4+
Redistribution and use in source and binary forms, with or without
5+
modification, are permitted provided that the following conditions are
6+
met:
7+
1. Redistributions of source code must retain the above copyright
8+
notice, this list of conditions and the following disclaimer.
9+
2. Redistributions in binary form must reproduce the above copyright
10+
notice, this list of conditions and the following disclaimer in
11+
the documentation and/or other materials provided with the
12+
distribution.
13+
3. Neither the name of the OpenBLAS project nor the names of
14+
its contributors may be used to endorse or promote products
15+
derived from this software without specific prior written permission.
16+
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17+
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18+
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19+
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
20+
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21+
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22+
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23+
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24+
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
25+
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26+
*****************************************************************************/
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#include "common.h"
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#include "swap_kernel_sve.c"
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#include "swap_kernel_c.c"
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int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT dummy3, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy, BLASLONG dummy2)
32+
{
33+
if (n <= 0)
34+
return 0;
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if (inc_x == 1 && inc_y == 1)
36+
swap_kernel_sve(n, x, y);
37+
else
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swap_kernel_c(n, x, inc_x, y, inc_y);
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return (0);
40+
}

‎kernel/arm64/swap_kernel_c.c‎

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/***************************************************************************
2+
Copyright (c) 2013, The OpenBLAS Project
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All rights reserved.
4+
Redistribution and use in source and binary forms, with or without
5+
modification, are permitted provided that the following conditions are
6+
met:
7+
1. Redistributions of source code must retain the above copyright
8+
notice, this list of conditions and the following disclaimer.
9+
2. Redistributions in binary form must reproduce the above copyright
10+
notice, this list of conditions and the following disclaimer in
11+
the documentation and/or other materials provided with the
12+
distribution.
13+
3. Neither the name of the OpenBLAS project nor the names of
14+
its contributors may be used to endorse or promote products
15+
derived from this software without specific prior written permission.
16+
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17+
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18+
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19+
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
20+
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21+
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22+
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23+
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24+
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
25+
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26+
*****************************************************************************/
27+
#include "common.h"
28+
#include <stdio.h>
29+
30+
static int swap_kernel_c(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
31+
{
32+
BLASLONG i = 0;
33+
BLASLONG ix = 0, iy = 0;
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FLOAT temp;
35+
36+
while (i < n)
37+
{
38+
temp = x[ix];
39+
x[ix] = y[iy];
40+
y[iy] = temp;
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ix += inc_x;
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iy += inc_y;
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i++;
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}
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return (0);
46+
}

‎kernel/arm64/swap_kernel_sve.c‎

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/*******************************************************************************
2+
Copyright (c) 2015, The OpenBLAS Project
3+
All rights reserved.
4+
Redistribution and use in source and binary forms, with or without
5+
modification, are permitted provided that the following conditions are
6+
met:
7+
1. Redistributions of source code must retain the above copyright
8+
notice, this list of conditions and the following disclaimer.
9+
2. Redistributions in binary form must reproduce the above copyright
10+
notice, this list of conditions and the following disclaimer in
11+
the documentation and/or other materials provided with the
12+
distribution.
13+
3. Neither the name of the OpenBLAS project nor the names of
14+
its contributors may be used to endorse or promote products
15+
derived from this software without specific prior written permission.
16+
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17+
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18+
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19+
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
20+
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21+
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22+
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23+
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24+
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
25+
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26+
*******************************************************************************/
27+
#include "common.h"
28+
#include <arm_sve.h>
29+
30+
#ifdef DOUBLE
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#define SVE_TYPE svfloat64_t
32+
#define SVE_ZERO svdup_f64(0.0)
33+
#define SVE_WHILELT svwhilelt_b64
34+
#define SVE_ALL svptrue_b64()
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#define SVE_WIDTH svcntd()
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#else
37+
#define SVE_TYPE svfloat32_t
38+
#define SVE_ZERO svdup_f32(0.0)
39+
#define SVE_WHILELT svwhilelt_b32
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#define SVE_ALL svptrue_b32()
41+
#define SVE_WIDTH svcntw()
42+
#endif
43+
44+
static int swap_kernel_sve(BLASLONG n, FLOAT *x, FLOAT *y)
45+
{
46+
BLASLONG sve_width = SVE_WIDTH;
47+
48+
for (BLASLONG i = 0; i < n; i += sve_width * 2)
49+
{
50+
svbool_t pg_a = SVE_WHILELT((uint64_t)i, (uint64_t)n);
51+
svbool_t pg_b = SVE_WHILELT((uint64_t)(i + sve_width), (uint64_t)n);
52+
SVE_TYPE x_vec_a = svld1(pg_a, &x[i]);
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SVE_TYPE y_vec_a = svld1(pg_a, &y[i]);
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SVE_TYPE x_vec_b = svld1(pg_b, &x[i + sve_width]);
55+
SVE_TYPE y_vec_b = svld1(pg_b, &y[i + sve_width]);
56+
svst1(pg_a, &x[i], y_vec_a);
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svst1(pg_a, &y[i], x_vec_a);
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svst1(pg_b, &x[i + sve_width], y_vec_b);
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svst1(pg_b, &y[i + sve_width], x_vec_b);
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}
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return (0);
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}

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