OV - exec - Function advec_cell_kernel(int, int, int, int, int, int, clover::Buffer1D<double>&, clover::Buffer1D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&, clover::Buffer2D<double>&) [clone .omp

	Function: advec_cell_kernel(int, int, int, int, int, int, clover::Buffer1D<double>&, clover::Buffer1 ...	Module: exec	Source: advec_cell.cpp:65-110 [...]	Coverage (incl. loops): 2.93% \| (excl. loops): 0.00%

/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp: 65 - 110

--------------------------------------------------------------------------------

65: #pragma omp parallel for simd collapse(2)

66:     for (int j = (y_min + 1); j < (y_max + 2); j++) {

67:       for (int i = (x_min + 1); i < (x_max + 2 + 2); i++)

68:         ({

69:           int upwind, donor, downwind, dif;

70:           double sigmat, sigma3, sigma4, sigmav, sigmam, diffuw, diffdw, limiter, wind;

71:           if (vol_flux_x(i, j) > 0.0) {

72:             upwind = i - 2;

73:             donor = i - 1;

74:             downwind = i;

75:             dif = donor;

76:           } else {

77:             upwind = std::min(i + 1, x_max + 2);

78:             donor = i;

79:             downwind = i - 1;

80:             dif = upwind;

81:           }

82:           sigmat = std::fabs(vol_flux_x(i, j)) / pre_vol(donor, j);

83:           sigma3 = (1.0 + sigmat) * (vertexdx[i] / vertexdx[dif]);

84:           sigma4 = 2.0 - sigmat;

85:           sigmav = sigmat;

86:           diffuw = density1(donor, j) - density1(upwind, j);

87:           diffdw = density1(downwind, j) - density1(donor, j);

88:           wind = 1.0;

89:           if (diffdw <= 0.0) wind = -1.0;

90:           if (diffuw * diffdw > 0.0) {

91:             limiter = (1.0 - sigmav) * wind *

92:                       std::fmin(std::fmin(std::fabs(diffuw), std::fabs(diffdw)),

93:                                 one_by_six * (sigma3 * std::fabs(diffuw) + sigma4 * std::fabs(diffdw)));

94:           } else {

95:             limiter = 0.0;

96:           }

97:           mass_flux_x(i, j) = vol_flux_x(i, j) * (density1(donor, j) + limiter);

98:           sigmam = std::fabs(mass_flux_x(i, j)) / (density1(donor, j) * pre_vol(donor, j));

99:           diffuw = energy1(donor, j) - energy1(upwind, j);

100:           diffdw = energy1(downwind, j) - energy1(donor, j);

101:           wind = 1.0;

102:           if (diffdw <= 0.0) wind = -1.0;

103:           if (diffuw * diffdw > 0.0) {

104:             limiter = (1.0 - sigmam) * wind *

105:                       std::fmin(std::fmin(std::fabs(diffuw), std::fabs(diffdw)),

106:                                 one_by_six * (sigma3 * std::fabs(diffuw) + sigma4 * std::fabs(diffdw)));

107:           } else {

108:             limiter = 0.0;

109:           }

110:           ener_flux(i, j) = mass_flux_x(i, j) * (energy1(donor, j) + limiter);

/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/context.h: 69 - 69

--------------------------------------------------------------------------------

69:   T &operator()(size_t i, size_t j) const { return data[i + j * sizeX]; }

0x427f60 STP	D15, D14, [SP, #864]!

0x427f64 STP	D13, D12, [SP, #16]

0x427f68 STP	D11, D10, [SP, #32]

0x427f6c STP	D9, D8, [SP, #48]

0x427f70 STP	X29, X30, [SP, #64]

0x427f74 STP	X28, X27, [SP, #80]

0x427f78 STP	X26, X25, [SP, #96]

0x427f7c STP	X24, X23, [SP, #112]

0x427f80 STP	X22, X21, [SP, #128]

0x427f84 STP	X20, X19, [SP, #144]

0x427f88 ADD	X29, SP, #64

0x427f8c SUB	SP, SP, #48

0x427f90 ADDVL	SP, SP, #60

0x427f94 LDR	W8, [X2]

0x427f98 LDR	W23, [X4]

0x427f9c LDR	W9, [X5]

0x427fa0 ADD	W24, W8, #1

0x427fa4 LDR	W8, [X3]

0x427fa8 ADD	W25, W23, #1

0x427fac ADD	W9, W9, #4

0x427fb0 ADD	W8, W8, #2

0x427fb4 SUBS	W8, W8, W24

0x427fb8 CCMP	W9, W25, #4, #12

0x427fbc B.LE	428310

0x427fc0 LDR	W19, [X0]

0x427fc4 SUB	W26, W9, W25

0x427fc8 MOVN	X9, #0

0x427fcc ORR	X20, XZR, X7

0x427fd0 ORR	X21, XZR, X6

0x427fd4 ORR	X22, XZR, X5

0x427fd8 ADRP	X0,

0x427fdc ADD	X0, X0, #3240

0x427fe0 UMADDL	X27, W26, W8, X9

0x427fe4 MOVZ	W8, #1

0x427fe8 ADD	X3, SP, #20

0x427fec ADD	X4, SP, #40

0x427ff0 STR	WZR, [SP, #20]

0x427ff4 STR	X8, [SP, #24]

0x427ff8 ADD	X5, SP, #32

0x427ffc ADD	X6, SP, #24

0x428000 MOVZ	W2, #34

0x428004 MOVZ	W7, #1

0x428008 STR	X8, [SP]

0x42800c STP	X27, XZR, [SP, #32]

0x428010 ORR	W1, WZR, W19

0x428014 BL	4101a0

0x428018 LDP	X8, X12, [SP, #32]

0x42801c CMP	X8, X27

0x428020 CSEL	X10, X8, X27, #11

0x428024 CMP	X12, X10

0x428028 STR	X10, [SP, #32]

0x42802c B.GT	428300

0x428030 PTRUE	P1.D, ALL

0x428034 LDR	X16, [X21, #16]

0x428038 LDP	X9, X15, [X29, #96]

0x42803c LDR	X17, [X20, #16]

0x428040 CNTD	X8, ALL

0x428044 LDP	X13, X11, [X29, #128]

0x428048 LDR	X14, [X29, #120]

0x42804c SUB	X10, X10, X12

0x428050 ADD	X18, X10, #1

0x428054 INDEX	Z31.D, X12, #1

0x428058 LDR	W3, [X22]

0x42805c LD1RD	{Z0.D}, P1/Z, [X21]

0x428060 SUB	X21, X29, #64

0x428064 SUBS	X10, X18, X8

0x428068 MOVI	V21.2D, #0

0x42806c CSEL	X10, XZR, X10, #3

0x428070 LDR	X0, [X14, #16]

0x428074 WHILELO	P0.D, XZR, X18

0x428078 LDR	X18, [X15, #16]

0x42807c LDR	X1, [X13, #16]

0x428080 LDR	X2, [X11, #16]

0x428084 ADD	W3, W3, #2

0x428088 LD1RD	{Z5.D}, P1/Z, [X13]

0x42808c LD1RD	{Z6.D}, P1/Z, [X11]

0x428090 ORR	X13, XZR, #0x55

0x428094 LDR	X9, [X9, #8]

0x428098 SUB	X11, XZR, X8

0x42809c MOVK	X13, #16325

0x4280a0 STR	Z0, [X21, #511, MUL VL]

0x4280a4 LD1RD	{Z0.D}, P1/Z, [X20]

0x4280a8 SUB	X20, X29, #64

0x4280ac DUP	Z22.D, X3

0x4280b0 DUP	Z4.D, X26

0x4280b4 DUP	Z7.D, X24

0x4280b8 SXTW	Z22.D, P1/M, Z22.D

0x4280bc STR	Z0, [X20, #510, MUL VL]

0x4280c0 LD1RD	{Z0.D}, P1/Z, [X15]

0x4280c4 SUB	X15, X29, #64

0x4280c8 DUP	Z16.D, X25

0x4280cc DUP	Z17.D, X23

0x4280d0 DUP	Z18.D, X8

0x4280d4 DUP	Z20.D, X16

0x4280d8 DUP	Z24.D, X17

0x4280dc DUP	Z26.D, X18

0x4280e0 STR	Z0, [X15, #509, MUL VL]

0x4280e4 LD1RD	{Z0.D}, P1/Z, [X14]

0x4280e8 DUP	Z27.D, X13

0x4280ec DUP	Z28.D, X0

0x4280f0 DUP	Z29.D, X1

0x4280f4 DUP	Z30.D, X2

0x4280f8 SUB	X14, X29, #64

0x4280fc STR	Z0, [X14, #508, MUL VL]

(150) 0x428100 DUP	Z0.D, #1

(150) 0x428104 SUB	X12, X29, #64

(150) 0x428108 ADD	X11, X11, X8

(150) 0x42810c SEL	Z8.D, P0, Z4.D, Z0.D

(150) 0x428110 LDR	Z0, [X12, #511, MUL VL]

(150) 0x428114 SDIVR	Z8.D, P1/M, Z8.D, Z31.D

(150) 0x428118 ADD	Z9.D, Z7.D, Z8.D

(150) 0x42811c MOVPRFX	Z11, Z31

(150) 0x428120 MLS	Z11.D, P1/M, Z8.D, Z4.D

(150) 0x428124 ADD	Z31.D, Z31.D, Z18.D

(150) 0x428128 SXTW	Z9.D, P1/M, Z9.D

(150) 0x42812c MOVPRFX	Z10, Z0

(150) 0x428130 MUL	Z10.D, P1/M, Z10.D, Z9.D

(150) 0x428134 DUPM	Z0.D, #0xfffffffe

(150) 0x428138 ADD	Z8.D, Z16.D, Z11.D

(150) 0x42813c ADD	Z19.D, Z17.D, Z11.D

(150) 0x428140 ADR	Z12.D, [Z20, Z8.D,SXTW #3]

(150) 0x428144 ADD	Z13.D, Z8.D, Z0.D

(150) 0x428148 LDR	Z0, [X12, #510, MUL VL]

(150) 0x42814c MOVPRFX	Z11, Z19

(150) 0x428150 SXTW	Z11.D, P1/M, Z19.D

(150) 0x428154 ORR	Z15.D, Z8.D, Z8.D

(150) 0x428158 LD1D	{Z14.D}, P0/Z, [X9, Z8.D,SXTW #3]

(150) 0x42815c ADR	Z10.D, [Z12, Z10.D,LSL #3]

(150) 0x428160 MOVPRFX	Z12, Z8

(150) 0x428164 SXTW	Z12.D, P1/M, Z8.D

(150) 0x428168 ADD	Z15.D, Z15.D, #1

(150) 0x42816c LD1D	{Z10.D}, P0/Z, [V10.D]

(150) 0x428170 SXTW	Z15.D, P1/M, Z15.D

(150) 0x428174 SMIN	Z15.D, P1/M, Z15.D, Z22.D

(150) 0x428178 FCMGT	P2.D, P1/Z, Z10.D, #0.0000000

(150) 0x42817c SEL	Z23.D, P2, Z12.D, Z11.D

(150) 0x428180 SEL	Z12.D, P2, Z11.D, Z12.D

(150) 0x428184 MOVPRFX	Z11, Z0

(150) 0x428188 MUL	Z11.D, P1/M, Z11.D, Z9.D

(150) 0x42818c SEL	Z19.D, P2, Z19.D, Z15.D

(150) 0x428190 LDR	Z0, [X12, #509, MUL VL]

(150) 0x428194 SEL	Z13.D, P2, Z13.D, Z15.D

(150) 0x428198 MOVPRFX	Z15, Z10

(150) 0x42819c FABS	Z15.D, P1/M, Z10.D

(150) 0x4281a0 ADR	Z25.D, [Z24, Z12.D,LSL #3]

(150) 0x4281a4 LD1D	{Z19.D}, P0/Z, [X9, Z19.D,SXTW #3]

(150) 0x4281a8 ADR	Z3.D, [Z26, Z23.D,LSL #3]

(150) 0x4281ac ADR	Z23.D, [Z29, Z23.D,LSL #3]

(150) 0x4281b0 ADR	Z11.D, [Z25, Z11.D,LSL #3]

(150) 0x4281b4 LD1D	{Z25.D}, P0/Z, [V11.D]

(150) 0x4281b8 FDIVR	Z19.D, P1/M, Z19.D, Z14.D

(150) 0x4281bc ADR	Z14.D, [Z26, Z13.D,SXTW #3]

(150) 0x4281c0 FDIVR	Z25.D, P1/M, Z25.D, Z15.D

(150) 0x4281c4 MOVPRFX	Z15, Z0

(150) 0x4281c8 MUL	Z15.D, P1/M, Z15.D, Z9.D

(150) 0x4281cc ADR	Z0.D, [Z26, Z12.D,LSL #3]

(150) 0x4281d0 ADR	Z0.D, [Z0, Z15.D,LSL #3]

(150) 0x4281d4 ADR	Z14.D, [Z14, Z15.D,LSL #3]

(150) 0x4281d8 ADR	Z3.D, [Z3, Z15.D,LSL #3]

(150) 0x4281dc LD1D	{Z1.D}, P0/Z, [V0.D]

(150) 0x4281e0 LD1D	{Z14.D}, P0/Z, [V14.D]

(150) 0x4281e4 LD1D	{Z3.D}, P0/Z, [V3.D]

(150) 0x4281e8 MOVPRFX	Z2, Z25

(150) 0x4281ec FADD	Z2.D, P1/M, Z2.D, #0.0000000

(150) 0x4281f0 FSUB	Z15.D, Z3.D, Z1.D

(150) 0x4281f4 FABD	Z3.D, P1/M, Z3.D, Z1.D

(150) 0x4281f8 FMUL	Z2.D, Z2.D, Z19.D

(150) 0x4281fc FSUB	Z19.D, Z1.D, Z14.D

(150) 0x428200 FABD	Z14.D, P1/M, Z14.D, Z1.D

(150) 0x428204 FCMLE	P3.D, P1/Z, Z15.D, #0.0000000

(150) 0x428208 FMUL	Z19.D, Z19.D, Z15.D

(150) 0x42820c MOVPRFX	Z15, Z14

(150) 0x428210 FMINNM	Z15.D, P1/M, Z15.D, Z3.D

(150) 0x428214 FCMGT	P2.D, P1/Z, Z19.D, #0.0000000

(150) 0x428218 FDUP	Z19.D, #0

(150) 0x42821c FSUB	Z19.D, Z19.D, Z25.D

(150) 0x428220 FSUBR	Z25.D, P1/M, Z25.D, #0.0000000

(150) 0x428224 FMUL	Z3.D, Z19.D, Z3.D

(150) 0x428228 FNEG	Z25.D, P3/M, Z25.D

(150) 0x42822c FMLA	Z3.D, P1/M, Z2.D, Z14.D

(150) 0x428230 FMUL	Z3.D, Z3.D, Z27.D

(150) 0x428234 FMINNM	Z3.D, P1/M, Z3.D, Z15.D

(150) 0x428238 FMUL	Z3.D, Z25.D, Z3.D

(150) 0x42823c LDR	Z25, [X12, #508, MUL VL]

(150) 0x428240 SEL	Z3.D, P2, Z3.D, Z21.D

(150) 0x428244 FADD	Z1.D, Z1.D, Z3.D

(150) 0x428248 ADR	Z3.D, [Z28, Z8.D,SXTW #3]

(150) 0x42824c FMUL	Z1.D, Z10.D, Z1.D

(150) 0x428250 MUL	Z25.D, P1/M, Z25.D, Z9.D

(150) 0x428254 ADR	Z10.D, [Z29, Z13.D,SXTW #3]

(150) 0x428258 ADR	Z3.D, [Z3, Z25.D,LSL #3]

(150) 0x42825c ADR	Z25.D, [Z29, Z12.D,LSL #3]

(150) 0x428260 ST1D	{Z1.D}, P0, [V3.D]

(150) 0x428264 MOVPRFX	Z3, Z5

(150) 0x428268 MUL	Z3.D, P1/M, Z3.D, Z9.D

(150) 0x42826c MUL	Z9.D, P1/M, Z9.D, Z6.D

(150) 0x428270 ADR	Z25.D, [Z25, Z3.D,LSL #3]

(150) 0x428274 ADR	Z10.D, [Z10, Z3.D,LSL #3]

(150) 0x428278 ADR	Z3.D, [Z23, Z3.D,LSL #3]

(150) 0x42827c LD1D	{Z25.D}, P0/Z, [V25.D]

(150) 0x428280 LD1D	{Z10.D}, P0/Z, [V10.D]

(150) 0x428284 LD1D	{Z3.D}, P0/Z, [V3.D]

(150) 0x428288 FSUB	Z10.D, Z25.D, Z10.D

(150) 0x42828c FSUB	Z3.D, Z3.D, Z25.D

(150) 0x428290 FMUL	Z23.D, Z10.D, Z3.D

(150) 0x428294 FABS	Z10.D, P1/M, Z10.D

(150) 0x428298 FCMGT	P2.D, P1/Z, Z23.D, #0.0000000

(150) 0x42829c AND	P3.B, P0/Z, P0.B, P2.B

(150) 0x4282a0 LD1D	{Z0.D}, P3/Z, [V0.D]

(150) 0x4282a4 LD1D	{Z23.D}, P3/Z, [V11.D]

(150) 0x4282a8 FCMLE	P3.D, P1/Z, Z3.D, #0.0000000

(150) 0x4282ac FABS	Z3.D, P1/M, Z3.D

(150) 0x4282b0 FMUL	Z19.D, Z19.D, Z3.D

(150) 0x4282b4 FMINNM	Z3.D, P1/M, Z3.D, Z10.D

(150) 0x4282b8 FMAD	Z2.D, P1/M, Z10.D, Z19.D

(150) 0x4282bc FMUL	Z0.D, Z0.D, Z23.D

(150) 0x4282c0 MOVPRFX	Z23, Z1

(150) 0x4282c4 FABS	Z23.D, P1/M, Z1.D

(150) 0x4282c8 FMUL	Z2.D, Z2.D, Z27.D

(150) 0x4282cc FDIVR	Z0.D, P1/M, Z0.D, Z23.D

(150) 0x4282d0 FMINNM	Z2.D, P1/M, Z2.D, Z3.D

(150) 0x4282d4 FSUBR	Z0.D, P1/M, Z0.D, #0.0000000

(150) 0x4282d8 FNEG	Z0.D, P3/M, Z0.D

(150) 0x4282dc FMUL	Z0.D, Z2.D, Z0.D

(150) 0x4282e0 SEL	Z0.D, P2, Z0.D, Z21.D

(150) 0x4282e4 FADD	Z0.D, Z25.D, Z0.D

(150) 0x4282e8 FMUL	Z0.D, Z1.D, Z0.D

(150) 0x4282ec ADR	Z1.D, [Z30, Z8.D,SXTW #3]

(150) 0x4282f0 ADR	Z1.D, [Z1, Z9.D,LSL #3]

(150) 0x4282f4 ST1D	{Z0.D}, P0, [V1.D]

(150) 0x4282f8 WHILELO	P0.D, X11, X10

(150) 0x4282fc B.MI	428100

0x428300 ADRP	X0,

0x428304 ADD	X0, X0, #3264

0x428308 ORR	W1, WZR, W19

0x42830c BL	410050

0x428310 ADDVL	SP, SP, #4

0x428314 ADD	SP, SP, #48

0x428318 LDP	D9, D8, [SP, #48]

0x42831c LDP	D11, D10, [SP, #32]

0x428320 LDP	D13, D12, [SP, #16]

0x428324 LDP	X20, X19, [SP, #144]

0x428328 LDP	X22, X21, [SP, #128]

0x42832c LDP	X24, X23, [SP, #112]

0x428330 LDP	X26, X25, [SP, #96]

0x428334 LDP	X28, X27, [SP, #80]

0x428338 LDP	X29, X30, [SP, #64]

0x42833c LDP	D15, D14, [SP], #160

0x428340 RET

0x428344 HINT	#0

0x428348 HINT	#0

0x42834c HINT	#0

Coverage (%)	Name	Module
►98.43+	__kmp_invoke_microtask	libomp.so
○	__kmp_invoke_task_func	libomp.so
○	__kmp_launch_thread	libomp.so
○	__kmp_launch_worker(void*)	libomp.so
○	start_thread	libc.so.6
○	thread_start	libc.so.6

min	med	avg	max

Percentile Index	10	20	30	40	50	60	70	80	90	100
Value

min	med	avg	max

Percentile Index	10	20	30	40	50	60	70	80	90	100
Value

Path /

Average path: Display a virtual path defined by average values of all real paths

The code analyzed by CQA in that panel excludes loops and represents 0.00% of application time for run orig_0

Source file and lines	advec_cell.cpp:65-110
Module	exec

The function is defined in:

/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:65-110
/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/context.h:69

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Code clean check

Detected a slowdown caused by scalar integer instructions (typically used for address computation). By removing them, you can lower the cost of an iteration from 19.00 to 16.00 cycles (1.19x speedup).

Workaround

Try to reorganize arrays of structures to structures of arrays
Consider to permute loops (see vectorization gain report)

Vectorization

Your function is not vectorized. Only 34% of vector register length is used (average across all VPU instructions). By fully vectorizing your function, you can lower the cost of an iteration from 19.00 to 10.00 cycles (1.90x speedup).

Details

16% of VPU instructions are used in vector version (process two or more data elements in vector registers):

18% of VPU loads are used in vector version.
42% of VPU stores are used in vector version.
0% of VPU addition or subtraction instructions are used in vector version.
0% of VPU fused multiply-add instructions are used in vector version.
3% of VPU instructions that are not load, store, addition, subtraction nor multiply instructions are used in vector version.

Since your execution units are vector units, only a fully vectorized function can use their full power.

Workaround

Try another compiler or update/tune your current one
Make array accesses unit-stride:
- If your function streams arrays of structures (AoS), try to use structures of arrays instead (SoA): for(i) a[i].x = b[i].x; (slow, non stride 1) => for(i) a.x[i] = b.x[i]; (fast, stride 1)

No data for this section

CALL instructions

Detected function call instructions.

Details

Calling (and then returning from) a function prevents many compiler optimizations (like vectorization), breaks control flow (which reduces pipeline performance) and executes extra instructions to save/restore the registers used inside it, which is very expensive (dozens of cycles). Consider to inline small functions.

unknown: 2 occurrences►
- /home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:65
- /home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:65

Matching between your function (in the source code) and the binary function

The binary function does not contain any FP arithmetical operations. The binary function is loading 18 bytes. The binary function is storing 131 bytes.

General properties

nb instructions	124
nb uops	121
loop length	496
used w registers	12
used x registers	32
used b registers	0
used h registers	0
used s registers	1
used d registers	8
used q registers	0
used v registers	1
used z registers	17
nb stack references	26

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	15.13 cycles
front end	15.13 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	2.50	2.50	15.50	15.25	19.00	15.25	3.00	3.00	2.50	2.50	17.50	17.17	17.33	5.50	5.50
cycles	2.50	2.50	15.50	15.25	19.00	15.25	3.00	3.00	2.50	2.50	17.50	17.17	17.33	5.50	5.50

Execution ports to units layout:

P0: BRU
P1: BRU
P2: ALU
P3: ALU
P4: ALU
P5: ALU
P6 (128 bits): VPU, FP store data, ALU, DIV/SQRT
P7 (128 bits): VPU, ALU, FP store data
P8 (128 bits): VPU, ALU, DIV/SQRT
P9 (128 bits): ALU, VPU
P10 (256 bits): store address, load
P11 (256 bits): store address, load
P12 (256 bits): load
P13 (64 bits): store data
P14 (64 bits): store data

Cycles executing div or sqrt instructions

Cycles summary

Front-end	15.13
Dispatch	19.00
Overall L1	19.00

Vectorization ratios

all	16%
load	18%
store	42%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	0%
fma	0%
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	3%

Vector efficiency ratios

all	34%
load	31%
store	54%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	18%
fma	25%
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	28%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 19.00 cycles. At this rate:

0% of peak load performance is reached (0.95 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
14% of peak store performance is reached (6.89 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

Front-end bottlenecks

Found no such bottlenecks.

ASM code

In the binary file, the address of the function is: 427f60

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	Latency	Recip. throughput	Vectorization
STP D15, D14, [SP, #864]!	1	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D13, D12, [SP, #16]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D11, D10, [SP, #32]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D9, D8, [SP, #48]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP X29, X30, [SP, #64]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X28, X27, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X26, X25, [SP, #96]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X24, X23, [SP, #112]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X22, X21, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X20, X19, [SP, #144]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
ADD X29, SP, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SUB SP, SP, #48	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADDVL SP, SP, #60	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
LDR W8, [X2]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
LDR W23, [X4]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
LDR W9, [X5]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W24, W8, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
LDR W8, [X3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
ADD W25, W23, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
ADD W9, W9, #4	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD W8, W8, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
SUBS W8, W8, W24	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (12.5%)
CCMP W9, W25, #4, #12	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
B.LE 428310 <_Z17advec_cell_kerneliiiiiiRN6clover8Buffer1DIdEES2_RNS_8Buffer2DIdEES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_.omp_outlined.3+0x3b0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR W19, [X0]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
SUB W26, W9, W25	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
MOVN X9, #0	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X20, XZR, X7	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X21, XZR, X6	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X22, XZR, X5	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADRP X0, <47cfd8>	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X0, X0, #3240	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
UMADDL X27, W26, W8, X9	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
MOVZ W8, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
ADD X3, SP, #20	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X4, SP, #40	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
STR WZR, [SP, #20]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (12.5%)
STR X8, [SP, #24]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (25.0%)
ADD X5, SP, #32	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X6, SP, #24	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
MOVZ W2, #34	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
MOVZ W7, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
STR X8, [SP]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (25.0%)
STP X27, XZR, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
ORR W1, WZR, W19	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
BL 4101a0 <@plt_start@+0x180>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X8, X12, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
CMP X8, X27	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
CSEL X10, X8, X27, #11	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
CMP X12, X10	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
STR X10, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (25.0%)
B.GT 428300 <_Z17advec_cell_kerneliiiiiiRN6clover8Buffer1DIdEES2_RNS_8Buffer2DIdEES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_.omp_outlined.3+0x3a0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PTRUE P1.D, ALL	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (100.0%)
LDR X16, [X21, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
LDP X9, X15, [X29, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDR X17, [X20, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
CNTD X8, ALL	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
LDP X13, X11, [X29, #128]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDR X14, [X29, #120]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
SUB X10, X10, X12	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
ADD X18, X10, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
INDEX Z31.D, X12, #1	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	5	2	N/A
LDR W3, [X22]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LD1RD {Z0.D}, P1/Z, [X21]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
SUB X21, X29, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SUBS X10, X18, X8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
MOVI V21.2D, #0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
CSEL X10, XZR, X10, #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
LDR X0, [X14, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
WHILELO P0.D, XZR, X18	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	2	N/A
LDR X18, [X15, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
LDR X1, [X13, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
LDR X2, [X11, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W3, W3, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LD1RD {Z5.D}, P1/Z, [X13]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z6.D}, P1/Z, [X11]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
ORR X13, XZR, #0x55	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR X9, [X9, #8]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
SUB X11, XZR, X8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
MOVK X13, #16325	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
STR Z0, [X21, #511, MUL VL]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0	2	0.50	vect (100.0%)
LD1RD {Z0.D}, P1/Z, [X20]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
SUB X20, X29, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
DUP Z22.D, X3	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z4.D, X26	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z7.D, X24	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
SXTW Z22.D, P1/M, Z22.D	1	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	2	1	vect (100.0%)
STR Z0, [X20, #510, MUL VL]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0	2	0.50	vect (100.0%)
LD1RD {Z0.D}, P1/Z, [X15]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
SUB X15, X29, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
DUP Z16.D, X25	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z17.D, X23	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z18.D, X8	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z20.D, X16	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z24.D, X17	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z26.D, X18	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
STR Z0, [X15, #509, MUL VL]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0	2	0.50	vect (100.0%)
LD1RD {Z0.D}, P1/Z, [X14]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
DUP Z27.D, X13	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z28.D, X0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z29.D, X1	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z30.D, X2	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
SUB X14, X29, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
STR Z0, [X14, #508, MUL VL]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0	2	0.50	vect (100.0%)
ADRP X0, <47c300>	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X0, X0, #3264	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR W1, WZR, W19	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
BL 410050 <@plt_start@+0x30>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADDVL SP, SP, #4	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
ADD SP, SP, #48	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDP D9, D8, [SP, #48]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP D11, D10, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP D13, D12, [SP, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP X20, X19, [SP, #144]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X22, X21, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X24, X23, [SP, #112]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
LDP X26, X25, [SP, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
LDP X28, X27, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
LDP X29, X30, [SP, #64]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP D15, D14, [SP], #160	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
RET	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
HINT #0																			N/A
HINT #0																			N/A
HINT #0																			N/A

The code analyzed by CQA in that panel excludes loops and represents 0.00% of application time for run orig_0

Source file and lines	advec_cell.cpp:65-110
Module	exec

The function is defined in:

/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:65-110
/home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/context.h:69

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Code clean check

Workaround

Try to reorganize arrays of structures to structures of arrays
Consider to permute loops (see vectorization gain report)

Vectorization

Details

16% of VPU instructions are used in vector version (process two or more data elements in vector registers):

18% of VPU loads are used in vector version.
42% of VPU stores are used in vector version.
0% of VPU addition or subtraction instructions are used in vector version.
0% of VPU fused multiply-add instructions are used in vector version.
3% of VPU instructions that are not load, store, addition, subtraction nor multiply instructions are used in vector version.

Since your execution units are vector units, only a fully vectorized function can use their full power.

Workaround

Try another compiler or update/tune your current one
Make array accesses unit-stride:
- If your function streams arrays of structures (AoS), try to use structures of arrays instead (SoA): for(i) a[i].x = b[i].x; (slow, non stride 1) => for(i) a.x[i] = b.x[i]; (fast, stride 1)

No data for this section

CALL instructions

Detected function call instructions.

Details

unknown: 2 occurrences►
- /home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:65
- /home/eoseret/qaas/qaas_runs/178-219-7589/intel/CloverLeaf2.0-CXX/build/CloverLeaf2.0-CXX/src/omp/advec_cell.cpp:65

Matching between your function (in the source code) and the binary function

The binary function does not contain any FP arithmetical operations. The binary function is loading 18 bytes. The binary function is storing 131 bytes.

General properties

nb instructions	124
nb uops	121
loop length	496
used w registers	12
used x registers	32
used b registers	0
used h registers	0
used s registers	1
used d registers	8
used q registers	0
used v registers	1
used z registers	17
nb stack references	26

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	15.13 cycles
front end	15.13 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	2.50	2.50	15.50	15.25	19.00	15.25	3.00	3.00	2.50	2.50	17.50	17.17	17.33	5.50	5.50
cycles	2.50	2.50	15.50	15.25	19.00	15.25	3.00	3.00	2.50	2.50	17.50	17.17	17.33	5.50	5.50

Execution ports to units layout:

P0: BRU
P1: BRU
P2: ALU
P3: ALU
P4: ALU
P5: ALU
P6 (128 bits): VPU, FP store data, ALU, DIV/SQRT
P7 (128 bits): VPU, ALU, FP store data
P8 (128 bits): VPU, ALU, DIV/SQRT
P9 (128 bits): ALU, VPU
P10 (256 bits): store address, load
P11 (256 bits): store address, load
P12 (256 bits): load
P13 (64 bits): store data
P14 (64 bits): store data

Cycles executing div or sqrt instructions

Cycles summary

Front-end	15.13
Dispatch	19.00
Overall L1	19.00

Vectorization ratios

all	16%
load	18%
store	42%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	0%
fma	0%
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	3%

Vector efficiency ratios

all	34%
load	31%
store	54%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	18%
fma	25%
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	28%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 19.00 cycles. At this rate:

0% of peak load performance is reached (0.95 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
14% of peak store performance is reached (6.89 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

Front-end bottlenecks

Found no such bottlenecks.

ASM code

In the binary file, the address of the function is: 427f60

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	Latency	Recip. throughput	Vectorization
STP D15, D14, [SP, #864]!	1	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D13, D12, [SP, #16]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D11, D10, [SP, #32]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP D9, D8, [SP, #48]	1	0	0	0	0	0	0	0.50	0.50	0	0	0.50	0.50	0	0	0	2	0.50	vect (50.0%)
STP X29, X30, [SP, #64]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X28, X27, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X26, X25, [SP, #96]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X24, X23, [SP, #112]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X22, X21, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
STP X20, X19, [SP, #144]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
ADD X29, SP, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SUB SP, SP, #48	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADDVL SP, SP, #60	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
LDR W8, [X2]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
LDR W23, [X4]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
LDR W9, [X5]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W24, W8, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
LDR W8, [X3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
ADD W25, W23, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
ADD W9, W9, #4	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD W8, W8, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
SUBS W8, W8, W24	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (12.5%)
CCMP W9, W25, #4, #12	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
B.LE 428310 <_Z17advec_cell_kerneliiiiiiRN6clover8Buffer1DIdEES2_RNS_8Buffer2DIdEES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_.omp_outlined.3+0x3b0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR W19, [X0]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (12.5%)
SUB W26, W9, W25	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
MOVN X9, #0	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X20, XZR, X7	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X21, XZR, X6	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR X22, XZR, X5	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADRP X0, <47cfd8>	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X0, X0, #3240	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
UMADDL X27, W26, W8, X9	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
MOVZ W8, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
ADD X3, SP, #20	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X4, SP, #40	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
STR WZR, [SP, #20]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (12.5%)
STR X8, [SP, #24]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (25.0%)
ADD X5, SP, #32	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X6, SP, #24	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
MOVZ W2, #34	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
MOVZ W7, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
STR X8, [SP]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (25.0%)
STP X27, XZR, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
ORR W1, WZR, W19	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
BL 4101a0 <@plt_start@+0x180>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X8, X12, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
CMP X8, X27	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
CSEL X10, X8, X27, #11	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
CMP X12, X10	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
STR X10, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (25.0%)
B.GT 428300 <_Z17advec_cell_kerneliiiiiiRN6clover8Buffer1DIdEES2_RNS_8Buffer2DIdEES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_.omp_outlined.3+0x3a0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PTRUE P1.D, ALL	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (100.0%)
LDR X16, [X21, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
LDP X9, X15, [X29, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDR X17, [X20, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
CNTD X8, ALL	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (25.0%)
LDP X13, X11, [X29, #128]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDR X14, [X29, #120]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
SUB X10, X10, X12	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
ADD X18, X10, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
INDEX Z31.D, X12, #1	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	5	2	N/A
LDR W3, [X22]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LD1RD {Z0.D}, P1/Z, [X21]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
SUB X21, X29, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
SUBS X10, X18, X8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
MOVI V21.2D, #0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	2	0.25	scal (25.0%)
CSEL X10, XZR, X10, #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (25.0%)
LDR X0, [X14, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
WHILELO P0.D, XZR, X18	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	2	N/A
LDR X18, [X15, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
LDR X1, [X13, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
LDR X2, [X11, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
ADD W3, W3, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LD1RD {Z5.D}, P1/Z, [X13]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
LD1RD {Z6.D}, P1/Z, [X11]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
ORR X13, XZR, #0x55	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDR X9, [X9, #8]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
SUB X11, XZR, X8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
MOVK X13, #16325	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
STR Z0, [X21, #511, MUL VL]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0	2	0.50	vect (100.0%)
LD1RD {Z0.D}, P1/Z, [X20]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
SUB X20, X29, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
DUP Z22.D, X3	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z4.D, X26	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z7.D, X24	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
SXTW Z22.D, P1/M, Z22.D	1	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	2	1	vect (100.0%)
STR Z0, [X20, #510, MUL VL]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0	2	0.50	vect (100.0%)
LD1RD {Z0.D}, P1/Z, [X15]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
SUB X15, X29, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
DUP Z16.D, X25	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z17.D, X23	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z18.D, X8	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z20.D, X16	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z24.D, X17	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z26.D, X18	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
STR Z0, [X15, #509, MUL VL]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0	2	0.50	vect (100.0%)
LD1RD {Z0.D}, P1/Z, [X14]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0	0	6	0.50	scal (25.0%)
DUP Z27.D, X13	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z28.D, X0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z29.D, X1	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
DUP Z30.D, X2	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	3	1	scal (25.0%)
SUB X14, X29, #64	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
STR Z0, [X14, #508, MUL VL]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	0	0	0	2	0.50	vect (100.0%)
ADRP X0, <47c300>	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X0, X0, #3264	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ORR W1, WZR, W19	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	scal (12.5%)
BL 410050 <@plt_start@+0x30>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADDVL SP, SP, #4	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	N/A
ADD SP, SP, #48	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
LDP D9, D8, [SP, #48]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP D11, D10, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP D13, D12, [SP, #16]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
LDP X20, X19, [SP, #144]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X22, X21, [SP, #128]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X24, X23, [SP, #112]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
LDP X26, X25, [SP, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
LDP X28, X27, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (50.0%)
LDP X29, X30, [SP, #64]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP D15, D14, [SP], #160	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0.33	0.33	0.33	0	0	6	0.33	vect (50.0%)
RET	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
HINT #0																			N/A
HINT #0																			N/A
HINT #0																			N/A

Name	Coverage (%)	Time (s)
▼advec_cell_kernel(int, int, int, int, int, int, clover::Buffer1D&, clover::Buffer1D&, clover::Buffer2D&, clover::Buffer2D&, clover::Buffer2D&, clover::Buffer2D&, clover::Buffer2D&, clover::Buffer2D–	2.93	4.06
○Loop 150 - advec_cell.cpp:66-110 - exec	2.93	3.97

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