From d0a79ca6e03528d84316b11e6edd8755dcfdf7be Mon Sep 17 00:00:00 2001 From: Ashwin Sekhar T K Date: Thu, 19 Jan 2017 10:56:17 +0530 Subject: [PATCH] THUNDERX2T99: Add threaded DDOT Implementation --- kernel/arm64/KERNEL.THUNDERX2T99 | 4 + kernel/arm64/ddot_thunderx2t99.c | 258 +++++++++++++++++++++++++++++++ 2 files changed, 262 insertions(+) create mode 100644 kernel/arm64/ddot_thunderx2t99.c diff --git a/kernel/arm64/KERNEL.THUNDERX2T99 b/kernel/arm64/KERNEL.THUNDERX2T99 index b6143b25f..c9d3132fb 100644 --- a/kernel/arm64/KERNEL.THUNDERX2T99 +++ b/kernel/arm64/KERNEL.THUNDERX2T99 @@ -2,7 +2,11 @@ include $(KERNELDIR)/KERNEL.CORTEXA57 DAXPYKERNEL=daxpy_thunderx2t99.S +ifndef SMP DDOTKERNEL=ddot_thunderx2t99.S +else +DDOTKERNEL=ddot_thunderx2t99.c +endif ifeq ($(DGEMM_UNROLL_M)x$(DGEMM_UNROLL_N), 8x4) DGEMMKERNEL = dgemm_kernel_8x4_thunderx2t99.S diff --git a/kernel/arm64/ddot_thunderx2t99.c b/kernel/arm64/ddot_thunderx2t99.c new file mode 100644 index 000000000..36a8d6c21 --- /dev/null +++ b/kernel/arm64/ddot_thunderx2t99.c @@ -0,0 +1,258 @@ +/*************************************************************************** +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 Y "x3" /* "Y" vector address */ +#define INC_Y "x4" /* "Y" stride */ +#define J "x5" /* loop variable */ + +#define REG0 "xzr" +#define DOTF "d0" +#define TMPX "d16" +#define LD1VX "{v16.d}[0]" +#define TMPY "d24" +#define LD1VY "{v24.d}[0]" +#define SZ "8" + +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); + + +static FLOAT ddot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y) +{ + FLOAT dot = 0.0 ; + + if ( n < 0 ) return(dot); + + __asm__ __volatile__ ( + " mov "N", %[N_] \n" + " mov "X", %[X_] \n" + " mov "INC_X", %[INCX_] \n" + " mov "Y", %[Y_] \n" + " mov "INC_Y", %[INCY_] \n" + " fmov "DOTF", "REG0" \n" + " fmov d1, "REG0" \n" + " fmov d2, "REG0" \n" + " fmov d3, "REG0" \n" + " fmov d4, "REG0" \n" + " fmov d5, "REG0" \n" + " fmov d6, "REG0" \n" + " fmov d7, "REG0" \n" + + " cmp "N", xzr \n" + " ble 9f //dot_kernel_L999 \n" + + " cmp "INC_X", #1 \n" + " bne 5f //dot_kernel_S_BEGIN \n" + " cmp "INC_Y", #1 \n" + " bne 5f //dot_kernel_S_BEGIN \n" + + "1: //dot_kernel_F_BEGIN \n" + " asr "J", "N", #5 \n" + " cmp "J", xzr \n" + " beq 3f //dot_kernel_F1 \n" + + " .align 5 \n" + "2: //dot_kernel_F32 \n" + " ldp q16, q17, ["X"] \n" + " ldp q24, q25, ["Y"] \n" + " ldp q18, q19, ["X", #32] \n" + " ldp q26, q27, ["Y", #32] \n" + " fmla v0.2d, v16.2d, v24.2d \n" + " fmla v1.2d, v17.2d, v25.2d \n" + " ldp q20, q21, ["X", #64] \n" + " ldp q28, q29, ["Y", #64] \n" + " fmla v2.2d, v18.2d, v26.2d \n" + " fmla v3.2d, v19.2d, v27.2d \n" + " ldp q22, q23, ["X", #96] \n" + " ldp q30, q31, ["Y", #96] \n" + " add "Y", "Y", #128 \n" + " add "X", "X", #128 \n" + " fmla v4.2d, v20.2d, v28.2d \n" + " fmla v5.2d, v21.2d, v29.2d \n" + " PRFM PLDL1KEEP, ["X", #896] \n" + " PRFM PLDL1KEEP, ["Y", #896] \n" + " PRFM PLDL1KEEP, ["X", #896+64] \n" + " PRFM PLDL1KEEP, ["Y", #896+64] \n" + " fmla v6.2d, v22.2d, v30.2d \n" + " fmla v7.2d, v23.2d, v31.2d \n" + + " ldp q16, q17, ["X"] \n" + " ldp q24, q25, ["Y"] \n" + " ldp q18, q19, ["X", #32] \n" + " ldp q26, q27, ["Y", #32] \n" + " fmla v0.2d, v16.2d, v24.2d \n" + " fmla v1.2d, v17.2d, v25.2d \n" + " ldp q20, q21, ["X", #64] \n" + " ldp q28, q29, ["Y", #64] \n" + " fmla v2.2d, v18.2d, v26.2d \n" + " fmla v3.2d, v19.2d, v27.2d \n" + " ldp q22, q23, ["X", #96] \n" + " ldp q30, q31, ["Y", #96] \n" + " add "Y", "Y", #128 \n" + " add "X", "X", #128 \n" + " fmla v4.2d, v20.2d, v28.2d \n" + " fmla v5.2d, v21.2d, v29.2d \n" + " PRFM PLDL1KEEP, ["X", #896] \n" + " PRFM PLDL1KEEP, ["Y", #896] \n" + " PRFM PLDL1KEEP, ["X", #896+64] \n" + " PRFM PLDL1KEEP, ["Y", #896+64] \n" + " fmla v6.2d, v22.2d, v30.2d \n" + " fmla v7.2d, v23.2d, v31.2d \n" + + " subs "J", "J", #1 \n" + " bne 2b //dot_kernel_F32 \n" + + " 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 "DOTF", v0.2d \n" + + "3: //dot_kernel_F1 \n" + " ands "J", "N", #31 \n" + " ble 9f //dot_kernel_L999 \n" + + "4: //dot_kernel_F10 \n" + " ldr "TMPX", ["X"] \n" + " ldr "TMPY", ["Y"] \n" + " add "X", "X", #"SZ" \n" + " add "Y", "Y", #"SZ" \n" + " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" + + " subs "J", "J", #1 \n" + " bne 4b //dot_kernel_F10 \n" + + " b 9f //dot_kernel_L999 \n" + + "5: //dot_kernel_S_BEGIN \n" + " lsl "INC_X", "INC_X", #3 \n" + " lsl "INC_Y", "INC_Y", #3 \n" + " asr "J", "N", #2 \n" + " cmp "J", xzr \n" + " ble 7f //dot_kernel_S1 \n" + + "6: //dot_kernel_S4: \n" + " ld1 "LD1VX", ["X"], "INC_X" \n" + " ld1 "LD1VY", ["Y"], "INC_Y" \n" + " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" + " ld1 "LD1VX", ["X"], "INC_X" \n" + " ld1 "LD1VY", ["Y"], "INC_Y" \n" + " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" + " ld1 "LD1VX", ["X"], "INC_X" \n" + " ld1 "LD1VY", ["Y"], "INC_Y" \n" + " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" + " ld1 "LD1VX", ["X"], "INC_X" \n" + " ld1 "LD1VY", ["Y"], "INC_Y" \n" + " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" + " subs "J", "J", #1 \n" + " bne 6b //dot_kernel_S4 \n" + + "7: //dot_kernel_S1: \n" + " ands "J", "N", #3 \n" + " ble 9f //dot_kernel_L999 \n" + + "8: //dot_kernel_S10 \n" + " ld1 "LD1VX", ["X"], "INC_X" \n" + " ld1 "LD1VY", ["Y"], "INC_Y" \n" + " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" + " subs "J", "J", #1 \n" + " bne 8b //dot_kernel_S10 \n" + + "9: //dot_kernel_L999 \n" + " fmov %[DOT_], "DOTF" \n" + : [DOT_] "=r" (dot) //%0 + : [N_] "r" (n), //%1 + [X_] "r" (x), //%2 + [INCX_] "r" (inc_x), //%3 + [Y_] "r" (y), //%4 + [INCY_] "r" (inc_y) //%5 + : "cc", + "memory", + "x0", "x1", "x2", "x3", "x4", "x5", + "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7" + ); + + return(dot); +} + +static int ddot_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 = ddot_compute(n, x, inc_x, y, inc_y); + + return 0; +} + +FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y) +{ + int nthreads; + FLOAT dot = 0.0; + FLOAT dummy_alpha; + + nthreads = num_cpu_avail(1); + + if (inc_x == 0 || inc_y == 0) + nthreads = 1; + + if (n <= 10000) + nthreads = 1; + + if (nthreads == 1) { + dot = ddot_compute(n, x, inc_x, y, inc_y); + } else { + int mode, i; + char result[MAX_CPU_NUMBER * sizeof(double) * 2]; + FLOAT *ptr; + + mode = BLAS_DOUBLE | BLAS_REAL; + + blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha, + x, inc_x, y, inc_y, result, 0, + ( void *)ddot_thread_function, nthreads); + + ptr = (FLOAT *)result; + for (i = 0; i < nthreads; i++) { + dot = dot + (*ptr); + ptr = (FLOAT *)(((char *)ptr) + sizeof(double) * 2); + } + } + + return dot; +}