From 99bd2892bf8fc8c90dc25ae1b35eff2943b454b3 Mon Sep 17 00:00:00 2001 From: Ashwin Sekhar T K Date: Fri, 27 Jan 2017 01:26:00 -0800 Subject: [PATCH] THUNDERX2T99: Add optimized CASUM Implementation --- kernel/arm64/KERNEL.THUNDERX2T99 | 2 + kernel/arm64/casum_thunderx2t99.c | 268 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 270 insertions(+) create mode 100644 kernel/arm64/casum_thunderx2t99.c diff --git a/kernel/arm64/KERNEL.THUNDERX2T99 b/kernel/arm64/KERNEL.THUNDERX2T99 index c8668b6..8e5d1b0 100644 --- a/kernel/arm64/KERNEL.THUNDERX2T99 +++ b/kernel/arm64/KERNEL.THUNDERX2T99 @@ -1,5 +1,7 @@ include $(KERNELDIR)/KERNEL.CORTEXA57 +CASUMKERNEL = casum_thunderx2t99.c + SNRM2KERNEL = snrm2_thunderx2t99.c CNRM2KERNEL = cnrm2_thunderx2t99.S diff --git a/kernel/arm64/casum_thunderx2t99.c b/kernel/arm64/casum_thunderx2t99.c new file mode 100644 index 0000000..4dac2e8 --- /dev/null +++ b/kernel/arm64/casum_thunderx2t99.c @@ -0,0 +1,268 @@ +/*************************************************************************** +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 + +#define N "x0" /* vector length */ +#define X "x1" /* "X" vector address */ +#define INC_X "x2" /* "X" stride */ +#define J "x5" /* loop variable */ + +#define REG0 "wzr" +#define SUMF "s0" +#define SUMFD "d0" + +/******************************************************************************/ + +#define KERNEL_F1 \ + "ldr d1, ["X"] \n" \ + "add "X", "X", #8 \n" \ + "fabs v1.2s, v1.2s \n" \ + "ext v2.8b, v1.8b, v1.8b, #4 \n" \ + "fadd s1, s1, s2 \n" \ + "fadd "SUMF", "SUMF", s1 \n" + +#define KERNEL_F32 \ + "ldr q16, ["X"] \n" \ + "ldr q17, ["X", #16] \n" \ + "ldr q18, ["X", #32] \n" \ + "ldr q19, ["X", #48] \n" \ + "ldp q20, q21, ["X", #64] \n" \ + "ldp q22, q23, ["X", #96] \n" \ + "fabs v16.4s, v16.4s \n" \ + "fabs v17.4s, v17.4s \n" \ + "fabs v18.4s, v18.4s \n" \ + "fabs v19.4s, v19.4s \n" \ + "ldp q24, q25, ["X", #128] \n" \ + "ldp q26, q27, ["X", #160] \n" \ + "fabs v20.4s, v20.4s \n" \ + "fabs v21.4s, v21.4s \n" \ + "fabs v22.4s, v22.4s \n" \ + "fabs v23.4s, v23.4s \n" \ + "fadd v16.4s, v16.4s, v17.4s \n" \ + "fadd v18.4s, v18.4s, v19.4s \n" \ + "ldp q28, q29, ["X", #192] \n" \ + "ldp q30, q31, ["X", #224] \n" \ + "fabs v24.4s, v24.4s \n" \ + "fabs v25.4s, v25.4s \n" \ + "fabs v26.4s, v26.4s \n" \ + "fabs v27.4s, v27.4s \n" \ + "add "X", "X", #256 \n" \ + "fadd v20.4s, v20.4s, v21.4s \n" \ + "fadd v22.4s, v22.4s, v23.4s \n" \ + "fabs v28.4s, v28.4s \n" \ + "fabs v29.4s, v29.4s \n" \ + "fabs v30.4s, v30.4s \n" \ + "fabs v31.4s, v31.4s \n" \ + "PRFM PLDL1KEEP, ["X", #1024] \n" \ + "PRFM PLDL1KEEP, ["X", #1024+64] \n" \ + "fadd v24.4s, v24.4s, v25.4s \n" \ + "fadd v26.4s, v26.4s, v27.4s \n" \ + "fadd v0.4s, v0.4s, v16.4s \n" \ + "fadd v1.4s, v1.4s, v18.4s \n" \ + "fadd v2.4s, v2.4s, v20.4s \n" \ + "fadd v3.4s, v3.4s, v22.4s \n" \ + "PRFM PLDL1KEEP, ["X", #1024+128] \n" \ + "PRFM PLDL1KEEP, ["X", #1024+192] \n" \ + "fadd v28.4s, v28.4s, v29.4s \n" \ + "fadd v30.4s, v30.4s, v31.4s \n" \ + "fadd v4.4s, v4.4s, v24.4s \n" \ + "fadd v5.4s, v5.4s, v26.4s \n" \ + "fadd v6.4s, v6.4s, v28.4s \n" \ + "fadd v7.4s, v7.4s, v30.4s \n" + +#define KERNEL_F32_FINALIZE \ + "fadd v0.4s, v0.4s, v1.4s \n" \ + "fadd v2.4s, v2.4s, v3.4s \n" \ + "fadd v4.4s, v4.4s, v5.4s \n" \ + "fadd v6.4s, v6.4s, v7.4s \n" \ + "fadd v0.4s, v0.4s, v2.4s \n" \ + "fadd v4.4s, v4.4s, v6.4s \n" \ + "fadd v0.4s, v0.4s, v4.4s \n" \ + "ext v1.16b, v0.16b, v0.16b, #8 \n" \ + "fadd v0.2s, v0.2s, v1.2s \n" \ + "faddp "SUMF", v0.2s \n" + +#define INIT_S \ + "lsl "INC_X", "INC_X", #3 \n" + +#define KERNEL_S1 \ + "ldr d1, ["X"] \n" \ + "add "X", "X", "INC_X" \n" \ + "fabs v1.2s, v1.2s \n" \ + "ext v2.8b, v1.8b, v1.8b, #4 \n" \ + "fadd s1, s1, s2 \n" \ + "fadd "SUMF", "SUMF", s1 \n" + + +#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 + + +static FLOAT casum_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x) +{ + FLOAT asum = 0.0 ; + + if ( n < 0 ) return(asum); + + __asm__ __volatile__ ( + " mov "N", %[N_] \n" + " mov "X", %[X_] \n" + " mov "INC_X", %[INCX_] \n" + " fmov "SUMF", "REG0" \n" + " fmov s1, "REG0" \n" + " fmov s2, "REG0" \n" + " fmov s3, "REG0" \n" + " fmov s4, "REG0" \n" + " fmov s5, "REG0" \n" + " fmov s6, "REG0" \n" + " fmov s7, "REG0" \n" + " cmp "N", xzr \n" + " ble .Lasum_kernel_L999 \n" + " cmp "INC_X", xzr \n" + " ble .Lasum_kernel_L999 \n" + " cmp "INC_X", #1 \n" + " bne .Lasum_kernel_S_BEGIN \n" + + ".Lasum_kernel_F_BEGIN: \n" + " asr "J", "N", #5 \n" + " cmp "J", xzr \n" + " beq .Lasum_kernel_F1 \n" + + ".Lasum_kernel_F32: \n" + " "KERNEL_F32" \n" + " subs "J", "J", #1 \n" + " bne .Lasum_kernel_F32 \n" + " "KERNEL_F32_FINALIZE" \n" + + ".Lasum_kernel_F1: \n" + " ands "J", "N", #31 \n" + " ble .Lasum_kernel_L999 \n" + + ".Lasum_kernel_F10: \n" + " "KERNEL_F1" \n" + " subs "J", "J", #1 \n" + " bne .Lasum_kernel_F10 \n" + " b .Lasum_kernel_L999 \n" + + ".Lasum_kernel_S_BEGIN: \n" + " "INIT_S" \n" + " asr "J", "N", #2 \n" + " cmp "J", xzr \n" + " ble .Lasum_kernel_S1 \n" + + ".Lasum_kernel_S4: \n" + " "KERNEL_S1" \n" + " "KERNEL_S1" \n" + " "KERNEL_S1" \n" + " "KERNEL_S1" \n" + " subs "J", "J", #1 \n" + " bne .Lasum_kernel_S4 \n" + + ".Lasum_kernel_S1: \n" + " ands "J", "N", #3 \n" + " ble .Lasum_kernel_L999 \n" + + ".Lasum_kernel_S10: \n" + " "KERNEL_S1" \n" + " subs "J", "J", #1 \n" + " bne .Lasum_kernel_S10 \n" + + ".Lasum_kernel_L999: \n" + " fmov %[ASUM_], "SUMFD" \n" + + : [ASUM_] "=r" (asum) //%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 asum; +} + +#if defined(SMP) +static int casum_thread_function(BLASLONG n, BLASLONG dummy0, + BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y, + BLASLONG inc_y, FLOAT *result, BLASLONG dummy3) +{ + *result = casum_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; +#endif + FLOAT asum = 0.0; + +#if defined(SMP) + nthreads = num_cpu_avail(1); + + if (inc_x == 0) + nthreads = 1; + + if (n <= 10000) + nthreads = 1; + + if (nthreads == 1) { + asum = casum_compute(n, x, inc_x); + } else { + int mode, i; + char result[MAX_CPU_NUMBER * sizeof(double) * 2]; + FLOAT *ptr; + + mode = BLAS_SINGLE | BLAS_COMPLEX; + + blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha, + x, inc_x, NULL, 0, result, 0, + ( void *)casum_thread_function, nthreads); + + ptr = (FLOAT *)result; + for (i = 0; i < nthreads; i++) { + asum = asum + (*ptr); + ptr = (FLOAT *)(((char *)ptr) + sizeof(double) * 2); + } + } +#else + asum = casum_compute(n, x, inc_x); +#endif + + return asum; +} -- 2.7.4