THUNDERX2T99: Add threaded DDOT Implementation
This commit is contained in:
Ashwin Sekhar T K
parent
0c07003ccf
commit
d0a79ca6e0
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@ -2,7 +2,11 @@ include $(KERNELDIR)/KERNEL.CORTEXA57
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DAXPYKERNEL=daxpy_thunderx2t99.S
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ifndef SMP
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DDOTKERNEL=ddot_thunderx2t99.S
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else
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DDOTKERNEL=ddot_thunderx2t99.c
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endif
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ifeq ($(DGEMM_UNROLL_M)x$(DGEMM_UNROLL_N), 8x4)
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DGEMMKERNEL = dgemm_kernel_8x4_thunderx2t99.S
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@ -0,0 +1,258 @@
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/***************************************************************************
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Copyright (c) 2017, 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.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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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
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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 <arm_neon.h>
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#define N "x0" /* vector length */
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#define X "x1" /* "X" vector address */
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#define INC_X "x2" /* "X" stride */
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#define Y "x3" /* "Y" vector address */
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#define INC_Y "x4" /* "Y" stride */
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#define J "x5" /* loop variable */
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#define REG0 "xzr"
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#define DOTF "d0"
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#define TMPX "d16"
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#define LD1VX "{v16.d}[0]"
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#define TMPY "d24"
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#define LD1VY "{v24.d}[0]"
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#define SZ "8"
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extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
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BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
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void *c, BLASLONG ldc, int (*function)(), int nthreads);
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static FLOAT ddot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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{
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FLOAT dot = 0.0 ;
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if ( n < 0 ) return(dot);
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__asm__ __volatile__ (
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" mov "N", %[N_] \n"
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" mov "X", %[X_] \n"
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" mov "INC_X", %[INCX_] \n"
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" mov "Y", %[Y_] \n"
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" mov "INC_Y", %[INCY_] \n"
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" fmov "DOTF", "REG0" \n"
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" fmov d1, "REG0" \n"
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" fmov d2, "REG0" \n"
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" fmov d3, "REG0" \n"
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" fmov d4, "REG0" \n"
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" fmov d5, "REG0" \n"
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" fmov d6, "REG0" \n"
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" fmov d7, "REG0" \n"
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" cmp "N", xzr \n"
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" ble 9f //dot_kernel_L999 \n"
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" cmp "INC_X", #1 \n"
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" bne 5f //dot_kernel_S_BEGIN \n"
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" cmp "INC_Y", #1 \n"
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" bne 5f //dot_kernel_S_BEGIN \n"
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"1: //dot_kernel_F_BEGIN \n"
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" asr "J", "N", #5 \n"
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" cmp "J", xzr \n"
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" beq 3f //dot_kernel_F1 \n"
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" .align 5 \n"
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"2: //dot_kernel_F32 \n"
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" ldp q16, q17, ["X"] \n"
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" ldp q24, q25, ["Y"] \n"
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" ldp q18, q19, ["X", #32] \n"
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" ldp q26, q27, ["Y", #32] \n"
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" fmla v0.2d, v16.2d, v24.2d \n"
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" fmla v1.2d, v17.2d, v25.2d \n"
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" ldp q20, q21, ["X", #64] \n"
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" ldp q28, q29, ["Y", #64] \n"
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" fmla v2.2d, v18.2d, v26.2d \n"
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" fmla v3.2d, v19.2d, v27.2d \n"
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" ldp q22, q23, ["X", #96] \n"
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" ldp q30, q31, ["Y", #96] \n"
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" add "Y", "Y", #128 \n"
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" add "X", "X", #128 \n"
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" fmla v4.2d, v20.2d, v28.2d \n"
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" fmla v5.2d, v21.2d, v29.2d \n"
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" PRFM PLDL1KEEP, ["X", #896] \n"
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" PRFM PLDL1KEEP, ["Y", #896] \n"
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" PRFM PLDL1KEEP, ["X", #896+64] \n"
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" PRFM PLDL1KEEP, ["Y", #896+64] \n"
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" fmla v6.2d, v22.2d, v30.2d \n"
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" fmla v7.2d, v23.2d, v31.2d \n"
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" ldp q16, q17, ["X"] \n"
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" ldp q24, q25, ["Y"] \n"
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" ldp q18, q19, ["X", #32] \n"
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" ldp q26, q27, ["Y", #32] \n"
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" fmla v0.2d, v16.2d, v24.2d \n"
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" fmla v1.2d, v17.2d, v25.2d \n"
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" ldp q20, q21, ["X", #64] \n"
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" ldp q28, q29, ["Y", #64] \n"
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" fmla v2.2d, v18.2d, v26.2d \n"
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" fmla v3.2d, v19.2d, v27.2d \n"
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" ldp q22, q23, ["X", #96] \n"
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" ldp q30, q31, ["Y", #96] \n"
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" add "Y", "Y", #128 \n"
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" add "X", "X", #128 \n"
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" fmla v4.2d, v20.2d, v28.2d \n"
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" fmla v5.2d, v21.2d, v29.2d \n"
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" PRFM PLDL1KEEP, ["X", #896] \n"
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" PRFM PLDL1KEEP, ["Y", #896] \n"
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" PRFM PLDL1KEEP, ["X", #896+64] \n"
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" PRFM PLDL1KEEP, ["Y", #896+64] \n"
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" fmla v6.2d, v22.2d, v30.2d \n"
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" fmla v7.2d, v23.2d, v31.2d \n"
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" subs "J", "J", #1 \n"
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" bne 2b //dot_kernel_F32 \n"
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" fadd v0.2d, v0.2d, v1.2d \n"
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" fadd v2.2d, v2.2d, v3.2d \n"
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" fadd v4.2d, v4.2d, v5.2d \n"
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" fadd v6.2d, v6.2d, v7.2d \n"
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" fadd v0.2d, v0.2d, v2.2d \n"
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" fadd v4.2d, v4.2d, v6.2d \n"
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" fadd v0.2d, v0.2d, v4.2d \n"
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" faddp "DOTF", v0.2d \n"
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"3: //dot_kernel_F1 \n"
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" ands "J", "N", #31 \n"
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" ble 9f //dot_kernel_L999 \n"
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"4: //dot_kernel_F10 \n"
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" ldr "TMPX", ["X"] \n"
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" ldr "TMPY", ["Y"] \n"
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" add "X", "X", #"SZ" \n"
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" add "Y", "Y", #"SZ" \n"
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" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
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" subs "J", "J", #1 \n"
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" bne 4b //dot_kernel_F10 \n"
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" b 9f //dot_kernel_L999 \n"
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"5: //dot_kernel_S_BEGIN \n"
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" lsl "INC_X", "INC_X", #3 \n"
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" lsl "INC_Y", "INC_Y", #3 \n"
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" asr "J", "N", #2 \n"
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" cmp "J", xzr \n"
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" ble 7f //dot_kernel_S1 \n"
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"6: //dot_kernel_S4: \n"
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" ld1 "LD1VX", ["X"], "INC_X" \n"
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" ld1 "LD1VY", ["Y"], "INC_Y" \n"
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" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
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" ld1 "LD1VX", ["X"], "INC_X" \n"
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" ld1 "LD1VY", ["Y"], "INC_Y" \n"
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" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
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" ld1 "LD1VX", ["X"], "INC_X" \n"
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" ld1 "LD1VY", ["Y"], "INC_Y" \n"
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" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
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" ld1 "LD1VX", ["X"], "INC_X" \n"
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" ld1 "LD1VY", ["Y"], "INC_Y" \n"
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" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
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" subs "J", "J", #1 \n"
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" bne 6b //dot_kernel_S4 \n"
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"7: //dot_kernel_S1: \n"
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" ands "J", "N", #3 \n"
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" ble 9f //dot_kernel_L999 \n"
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"8: //dot_kernel_S10 \n"
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" ld1 "LD1VX", ["X"], "INC_X" \n"
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" ld1 "LD1VY", ["Y"], "INC_Y" \n"
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" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
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" subs "J", "J", #1 \n"
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" bne 8b //dot_kernel_S10 \n"
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"9: //dot_kernel_L999 \n"
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" fmov %[DOT_], "DOTF" \n"
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: [DOT_] "=r" (dot) //%0
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: [N_] "r" (n), //%1
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[X_] "r" (x), //%2
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[INCX_] "r" (inc_x), //%3
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[Y_] "r" (y), //%4
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[INCY_] "r" (inc_y) //%5
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: "cc",
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"memory",
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"x0", "x1", "x2", "x3", "x4", "x5",
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"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7"
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);
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return(dot);
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}
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static int ddot_thread_function(BLASLONG n, BLASLONG dummy0,
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BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y,
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BLASLONG inc_y, FLOAT *result, BLASLONG dummy3)
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{
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*result = ddot_compute(n, x, inc_x, y, inc_y);
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return 0;
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}
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FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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{
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int nthreads;
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FLOAT dot = 0.0;
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FLOAT dummy_alpha;
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nthreads = num_cpu_avail(1);
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if (inc_x == 0 || inc_y == 0)
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nthreads = 1;
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if (n <= 10000)
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nthreads = 1;
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if (nthreads == 1) {
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dot = ddot_compute(n, x, inc_x, y, inc_y);
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} else {
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int mode, i;
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char result[MAX_CPU_NUMBER * sizeof(double) * 2];
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FLOAT *ptr;
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mode = BLAS_DOUBLE | BLAS_REAL;
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blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
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x, inc_x, y, inc_y, result, 0,
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( void *)ddot_thread_function, nthreads);
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ptr = (FLOAT *)result;
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for (i = 0; i < nthreads; i++) {
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dot = dot + (*ptr);
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ptr = (FLOAT *)(((char *)ptr) + sizeof(double) * 2);
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}
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}
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return dot;
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}
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