OV - exec - Loop 361

	Loop Id: 361	Module: exec	Source: BsplineFunctor.h:233-260 [...]	Coverage: 2.05%

      (358) 0x419c20 MOVI	D0, #0

      (358) 0x419c24 FSUB	D0, D8, S0

      (358) 0x419c28 BL	404990

      (358) 0x419c2c LDP	X8, X9, [X19]

      (358) 0x419c30 STR	D0, [X8, X22,LSL #3]

      (358) 0x419c34 ADD	X22, X22, #1

      (358) 0x419c38 SUB	X8, X9, X8

      (358) 0x419c3c CMP	X22, X8,ASR #3

      (358) 0x419c40 B.CS	419e64

      (358) 0x419c44 LDRB	W8, [X20, #664]

      (358) 0x419c48 TBZ	W8, #0, 419e80

      (358) 0x419c4c LDRSW	X24, [X20, #672]

      (358) 0x419c50 LDR	X8, [X21, #216]

      (358) 0x419c54 LDR	W1, [X21, #584]

      (358) 0x419c58 ORR	X0, XZR, X20

      (358) 0x419c5c LDR	X25, [X20, #656]

      (358) 0x419c60 LDR	D8, [X8, X24,LSL #3]

      (358) 0x419c64 BL	4476b0

      (358) 0x419c68 LDR	X8, [X21, #160]

      (358) 0x419c6c CBZ	X8, 419c20

    (359) 0x419c70 LDR	X11, [X25, #24]

    (359) 0x419c74 LDR	X12, [X21, #512]

    (359) 0x419c78 LDR	X10, [X0, #72]

    (359) 0x419c7c MOVI	D0, #0

    (359) 0x419c80 ORR	X9, XZR, XZR

    (359) 0x419c84 MADD	X10, X22, X23, X10

    (359) 0x419c88 LDR	W11, [X11, X24,LSL #2]

    (359) 0x419c8c LDR	X13, [X21, #464]

    (359) 0x419c90 LDR	X10, [X10, #24]

    (359) 0x419c94 MADD	W11, W11, W8, WZR

    (359) 0x419c98 ADD	X11, X12, W11,SXTW #3

    (359) 0x419c9c LDR	X12, [X25, #616]

    (359) 0x419ca0 ADD	X14, X10, #8

    (359) 0x419ca4 LDR	X12, [X12, #24]

    (359) 0x419ca8 B	419cbc

    (359) 0x419cac FADD	D0, D18, D0

    (359) 0x419cb0 ADD	X9, X9, #1

    (359) 0x419cb4 CMP	X9, X8

    (359) 0x419cb8 B.EQ	419c24

    (359) 0x419cbc ADD	X15, X12, X9,LSL #2

    (359) 0x419cc0 MOVI	D18, #0

    (359) 0x419cc4 LDP	W17, W15, [X15]

    (359) 0x419cc8 SBFM	X17, X17, #0, #31

    (359) 0x419ccc SUB	W18, W15, W17

    (359) 0x419cd0 CMP	W18, #1

    (359) 0x419cd4 B.LT	419cac

  (362) 0x419cd8 LDR	X15, [X11, X9,LSL #3]

  (362) 0x419cdc LDR	D1, [X15, #8]

  (362) 0x419ce0 CMP	W18, #1

  (362) 0x419ce4 B.NE	419de0

  (362) 0x419ce8 ORR	X0, XZR, XZR

  (362) 0x419cec ORR	W16, WZR, WZR

  (362) 0x419cf0 TBZ	W18, #0, 419d14

  (362) 0x419cf4 ADD	X18, X10, X17,LSL #3

  (362) 0x419cf8 ADD	W17, W17, W0

  (362) 0x419cfc LDR	D2, [X18, X0,LSL #3]

  (362) 0x419d00 FCMP	D2, D1

  (362) 0x419d04 CCMP	W17, W24, #4, #11

  (362) 0x419d08 B.EQ	419d14

  (362) 0x419d0c STR	D2, [X13, X16,SXTW #3]

  (362) 0x419d10 ADD	W16, W16, #1

  (362) 0x419d14 MOVI	D18, #0

  (362) 0x419d18 CMP	W16, #1

  (362) 0x419d1c B.LT	419cac

  (362) 0x419d20 LDP	D2, D3, [X15, #24]

  (362) 0x419d24 LDP	D4, D5, [X15, #40]

  (362) 0x419d28 LDP	D6, D7, [X15, #88]

  (362) 0x419d2c ADD	X18, X15, #56

  (362) 0x419d30 ADD	X0, X15, #64

  (362) 0x419d34 ADD	X1, X15, #72

  (362) 0x419d38 ADD	X2, X15, #80

  (362) 0x419d3c ADD	X3, X15, #120

  (362) 0x419d40 ADD	X4, X15, #128

  (362) 0x419d44 ADD	X5, X15, #136

  (362) 0x419d48 LDP	D16, D17, [X15, #104]

  (362) 0x419d4c ADD	X6, X15, #144

  (362) 0x419d50 LDR	D1, [X15, #568]

  (362) 0x419d54 LDR	X17, [X15, #536]

  (362) 0x419d58 ORR	W15, WZR, W16

  (362) 0x419d5c ORR	X16, XZR, X13

  (362) 0x419d60 LD1	{V17.D[1]}, [X6]

  (362) 0x419d64 LD1	{V5.D[1]}, [X2]

  (362) 0x419d68 LD1	{V7.D[1]}, [X4]

  (362) 0x419d6c LD1	{V3.D[1]}, [X0]

  (362) 0x419d70 LD1	{V16.D[1]}, [X5]

  (362) 0x419d74 LD1	{V4.D[1]}, [X1]

  (362) 0x419d78 LD1	{V6.D[1]}, [X3]

  (362) 0x419d7c LD1	{V2.D[1]}, [X18]

    (363) 0x419d80 LDR	D19, [X16], #8

    (363) 0x419d84 ORR	V25.16B, V17.16B, V17.16B

    (363) 0x419d88 ORR	V24.16B, V5.16B, V5.16B

    (363) 0x419d8c SUBS	X15, X15, #1

    (363) 0x419d90 FMUL	D19, D19, D1

    (363) 0x419d94 FRINTZ	D20, D19

    (363) 0x419d98 FCVTZS	W18, D19

    (363) 0x419d9c FSUB	D19, D19, S20

    (363) 0x419da0 ADD	X18, X17, W18,SXTW #3

    (363) 0x419da4 FMUL	D20, D19, D19

    (363) 0x419da8 FMLA	V25.2D, V16.2D, V19.D[0]

    (363) 0x419dac FMLA	V24.2D, V4.2D, V19.D[0]

    (363) 0x419db0 FMUL	D21, D20, D19

    (363) 0x419db4 FMLA	V25.2D, V7.2D, V20.D[0]

    (363) 0x419db8 LDP	Q22, Q23, [X18]

    (363) 0x419dbc FMLA	V24.2D, V3.2D, V20.D[0]

    (363) 0x419dc0 FMLA	V25.2D, V6.2D, V21.D[0]

    (363) 0x419dc4 FMLA	V24.2D, V2.2D, V21.D[0]

    (363) 0x419dc8 FMUL	V19.2D, V25.2D, V23.2D

    (363) 0x419dcc FMLA	V19.2D, V24.2D, V22.2D

    (363) 0x419dd0 FADDP	D19, V19.2D

    (363) 0x419dd4 FADD	D18, D18, D19

    (363) 0x419dd8 B.NE	419d80

  (362) 0x419ddc B	419cac

0x419de0 AND	X1, X18, #6015

0x419de4 SUB	W2, W24, W17

0x419de8 ADD	X3, X14, X17,LSL #3

0x419dec ORR	X0, XZR, XZR

0x419df0 ORR	W16, WZR, WZR

0x419df4 B	419e14

0x419e00 ADD	X0, X0, #2

0x419e04 SUB	X1, X1, #2

0x419e08 SUB	W2, W2, #2

0x419e0c ADD	X3, X3, #16

0x419e10 CBZ	X1, 419cf0

0x419e14 LDUR	D2, [X3, #504]

0x419e18 FCMP	D2, D1

0x419e1c CCMP	W2, #0, #4, #11

0x419e20 B.NE	419e40

0x419e24 LDR	D2, [X3]

0x419e28 FCMP	D2, D1

0x419e2c CCMP	W2, #1, #4, #11

0x419e30 B.EQ	419e00

0x419e34 B	419e58

0x419e58 STR	D2, [X13, X16,SXTW #3]

0x419e5c ADD	W16, W16, #1

0x419e60 B	419e00

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Numerics/OhmmsPETE/OhmmsVector.h: 223 - 229

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

223:     return X[i];

[...]

229:     return X[i];

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/TwoBodyJastrowRef.h: 107 - 132

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

107:     for (int k = 0; k < ratios.size(); ++k)

108:       ratios[k] = std::exp(Uat[VP.refPtcl] - computeU(VP.getRefPS(), VP.refPtcl, VP.getDistTableAB(myTableID).getDistRow(k).data()));

[...]

126:     const int igt = P.GroupID[iat] * NumGroups;

127:     for (int jg = 0; jg < NumGroups; ++jg)

128:     {

129:       const FuncType& f2(*F[igt + jg]);

130:       int iStart = P.first(jg);

131:       int iEnd   = P.last(jg);

132:       curUat += f2.evaluateV(iat, iStart, iEnd, dist, DistCompressed.data());

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Particle/ParticleSet.h: 313 - 313

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

313:   inline int first(int igroup) const { return (*group_offsets_)[igroup]; }

/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/optional: 469 - 991

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

469:       { return static_cast<const _Dp*>(this)->_M_payload._M_engaged; }

[...]

991: 	if (this->_M_is_engaged())

/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_vector.h: 993 - 1150

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

993:       { return size_type(this->_M_impl._M_finish - this->_M_impl._M_start); }

[...]

1131: 	return *(this->_M_impl._M_start + __n);

[...]

1150: 	return *(this->_M_impl._M_start + __n);

/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/refwrap.h: 351 - 351

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

351:       { return *_M_data; }

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/BsplineFunctor.h: 233 - 260

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

233:   const int iLimit = iEnd - iStart;

234:

235: #pragma vector always

236:   for (int jat = 0; jat < iLimit; jat++)

237:   {

238:     real_type r = distArray[jat];

239:     // pick the distances smaller than the cutoff and avoid the reference atom

240:     if (r < cutoff_radius && iStart + jat != iat)

241:       distArrayCompressed[iCount++] = distArray[jat];

242:   }

243:

244:   real_type d = 0.0;

245:   //#pragma omp simd reduction(+:d)

246:   for (int jat = 0; jat < iCount; jat++)

247:   {

248:     real_type r = distArrayCompressed[jat];

249:     r *= DeltaRInv;

250:     int i         = (int)r;

251:     real_type t   = r - real_type(i);

252:     real_type tp0 = t * t * t;

253:     real_type tp1 = t * t;

254:     real_type tp2 = t;

255:

256:     real_type d1 = SplineCoefs[i + 0] * (A[0] * tp0 + A[1] * tp1 + A[2] * tp2 + A[3]);

257:     real_type d2 = SplineCoefs[i + 1] * (A[4] * tp0 + A[5] * tp1 + A[6] * tp2 + A[7]);

258:     real_type d3 = SplineCoefs[i + 2] * (A[8] * tp0 + A[9] * tp1 + A[10] * tp2 + A[11]);

259:     real_type d4 = SplineCoefs[i + 3] * (A[12] * tp0 + A[13] * tp1 + A[14] * tp2 + A[15]);

260:     d += (d1 + d2 + d3 + d4);

Coverage (%)	Name	Source Location	Module
►100.00+	qmcplusplus::WaveFunction::eva[...]	WaveFunction.cpp:272	exec
○	qmcplusplus::NonLocalPP<double[...]	NonLocalPP.hpp:126	exec
○	main.omp_outlined.63	NewTimer.h:249	exec
○	__kmp_invoke_microtask		libomp.so

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 /

Metric	Value
CQA speedup if no scalar integer	2.57
CQA speedup if FP arith vectorized	1.00
CQA speedup if fully vectorized	3.00
CQA speedup if no inter-iteration dependency	NA
CQA speedup if next bottleneck killed	1.04
Bottlenecks	P0, P1,
Function	miniqmcreference::TwoBodyJastrowRef >::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)
Source	BsplineFunctor.h:236-241
Source loop unroll info	NA
Source loop unroll confidence level	NA
Unroll/vectorization loop type	NA
Unroll factor	NA
CQA cycles	3.00
CQA cycles if no scalar integer	1.17
CQA cycles if FP arith vectorized	3.00
CQA cycles if fully vectorized	1.00
Front-end cycles	2.88
P0 cycles	3.00
P1 cycles	3.00
P2 cycles	2.00
P3 cycles	2.00
P4 cycles	2.00
P5 cycles	2.00
P6 cycles	2.00
P7 cycles	2.00
P8 cycles	2.00
P9 cycles	1.00
P10 cycles	0.00
P11 cycles	0.00
P12 cycles	1.17
P13 cycles	0.83
P14 cycles	1.00
P15 cycles	0.00
P16 cycles	0.00
DIV/SQRT cycles	0.00
Inter-iter dependencies cycles	NA
FE+BE cycles (UFS)	NA
Stall cycles (UFS)	NA
Nb insns	23.00
Nb uops	23.00
Nb loads	NA
Nb stores	1.00
Nb stack references	0.00
FLOP/cycle	0.00
Nb FLOP add-sub	0.00
Nb FLOP mul	0.00
Nb FLOP fma	0.00
Nb FLOP div	0.00
Nb FLOP rcp	0.00
Nb FLOP sqrt	0.00
Nb FLOP rsqrt	0.00
Bytes/cycle	8.00
Bytes prefetched	0.00
Bytes loaded	16.00
Bytes stored	8.00
Stride 0	NA
Stride 1	NA
Stride n	NA
Stride unknown	NA
Stride indirect	NA
Vectorization ratio all	0.00
Vectorization ratio load	0.00
Vectorization ratio store	0.00
Vectorization ratio mul	NA
Vectorization ratio add_sub	0.00
Vectorization ratio fma	NA
Vectorization ratio div_sqrt	NA
Vectorization ratio other	0.00
Vector-efficiency ratio all	42.31
Vector-efficiency ratio load	50.00
Vector-efficiency ratio store	50.00
Vector-efficiency ratio mul	NA
Vector-efficiency ratio add_sub	37.50
Vector-efficiency ratio fma	NA
Vector-efficiency ratio div_sqrt	NA
Vector-efficiency ratio other	41.67

Metric	Value
CQA speedup if no scalar integer	2.57
CQA speedup if FP arith vectorized	1.00
CQA speedup if fully vectorized	3.00
CQA speedup if no inter-iteration dependency	NA
CQA speedup if next bottleneck killed	1.04
Bottlenecks	P0, P1,
Function	miniqmcreference::TwoBodyJastrowRef >::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)
Source	BsplineFunctor.h:236-241
Source loop unroll info	NA
Source loop unroll confidence level	NA
Unroll/vectorization loop type	NA
Unroll factor	NA
CQA cycles	3.00
CQA cycles if no scalar integer	1.17
CQA cycles if FP arith vectorized	3.00
CQA cycles if fully vectorized	1.00
Front-end cycles	2.88
P0 cycles	3.00
P1 cycles	3.00
P2 cycles	2.00
P3 cycles	2.00
P4 cycles	2.00
P5 cycles	2.00
P6 cycles	2.00
P7 cycles	2.00
P8 cycles	2.00
P9 cycles	1.00
P10 cycles	0.00
P11 cycles	0.00
P12 cycles	1.17
P13 cycles	0.83
P14 cycles	1.00
P15 cycles	0.00
P16 cycles	0.00
DIV/SQRT cycles	0.00
Inter-iter dependencies cycles	NA
FE+BE cycles (UFS)	NA
Stall cycles (UFS)	NA
Nb insns	23.00
Nb uops	23.00
Nb loads	NA
Nb stores	1.00
Nb stack references	0.00
FLOP/cycle	0.00
Nb FLOP add-sub	0.00
Nb FLOP mul	0.00
Nb FLOP fma	0.00
Nb FLOP div	0.00
Nb FLOP rcp	0.00
Nb FLOP sqrt	0.00
Nb FLOP rsqrt	0.00
Bytes/cycle	8.00
Bytes prefetched	0.00
Bytes loaded	16.00
Bytes stored	8.00
Stride 0	NA
Stride 1	NA
Stride n	NA
Stride unknown	NA
Stride indirect	NA
Vectorization ratio all	0.00
Vectorization ratio load	0.00
Vectorization ratio store	0.00
Vectorization ratio mul	NA
Vectorization ratio add_sub	0.00
Vectorization ratio fma	NA
Vectorization ratio div_sqrt	NA
Vectorization ratio other	0.00
Vector-efficiency ratio all	42.31
Vector-efficiency ratio load	50.00
Vector-efficiency ratio store	50.00
Vector-efficiency ratio mul	NA
Vector-efficiency ratio add_sub	37.50
Vector-efficiency ratio fma	NA
Vector-efficiency ratio div_sqrt	NA
Vector-efficiency ratio other	41.67

Path /

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

Function	miniqmcreference::TwoBodyJastrowRef >::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)
Source file and lines	BsplineFunctor.h:233-260
Module	exec

The loop is defined in:

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Numerics/OhmmsPETE/OhmmsVector.h:223,229
/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/TwoBodyJastrowRef.h:107-108,126-132
/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Particle/ParticleSet.h:313
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/optional:469,991
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_vector.h:993,1131,1150
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/refwrap.h:351
/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/BsplineFunctor.h:233-260

Analyzed code is defined in /home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/BsplineFunctor.h:236-241.

Warnings:

Non-innermost loop: analyzing only self part (ignoring child loops).
Ignoring paths for analysis
Failed to get the number of paths
RecMII not computed since number of paths is unknown or > max_paths
Streams not analyzed since number of paths is unknown or > max_paths

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 3.00 to 1.17 cycles (2.57x speedup).

Workaround

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

Vectorization

Your loop is not vectorized. Only 42% of vector register length is used (average across all VPU instructions). By vectorizing your loop, you can lower the cost of an iteration from 3.00 to 1.00 cycles (3.00x speedup).

Details

All VPU instructions are used in scalar version (process only one data element in vector registers). Since your execution units are vector units, only a vectorized loop can use their full power.

Workaround

Try another compiler or update/tune your current one
Remove inter-iterations dependences from your loop and make it unit-stride:
- If your arrays have 2 or more dimensions, check whether elements are accessed contiguously and, otherwise, try to permute loops accordingly: C storage order is row-major: for(i) for(j) a[j][i] = b[j][i]; (slow, non stride 1) => for(i) for(j) a[i][j] = b[i][j]; (fast, stride 1)
- If your loop 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

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

The binary loop does not contain any FP arithmetical operations. The binary loop is loading 16 bytes. The binary loop is storing 8 bytes.

General properties

nb instructions	23
loop length	92
nb stack references	0

Front-end

FIT IN UOP CACHE

front end

2.88 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16
uops	3.00	3.00	2.00	2.00	2.00	2.00	2.00	2.00	2.00	1.00	0.00	0.00	1.17	0.83	1.00	0.00	0.00
cycles	3.00	3.00	2.00	2.00	2.00	2.00	2.00	2.00	2.00	1.00	0.00	0.00	1.17	0.83	1.00	0.00	0.00

Execution ports to units layout:

P0: BRU
P1: BRU
P2: ALU
P3: ALU
P4: ALU
P5: ALU
P6: ALU
P7: ALU
P8 (128 bits): VPU, FP store data, ALU, DIV/SQRT
P9 (128 bits): VPU, ALU, FP store data
P10 (128 bits): VPU, ALU, DIV/SQRT
P11 (128 bits): ALU, VPU
P12 (256 bits): store address, load
P13 (256 bits): store address, load
P14 (256 bits): load
P15 (64 bits): store data
P16 (64 bits): store data

Cycles executing div or sqrt instructions

Cycles summary

Front-end	2.88
Overall L1	3.00

Vectorization ratios

INT

all	0%
load	0%
store	0%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	0%
fma	NA (no fma vectorizable/vectorized instructions)
other	0%

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

INT+FP

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

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each iteration of the binary loop takes 3.00 cycles. At this rate:

5% of peak load performance is reached (5.33 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
5% of peak store performance is reached (2.67 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

ASM code

In the binary file, the address of the loop is: 419e00

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P12	P13	P14	Latency	Recip. throughput	Vectorization
AND X1, X18, #6015	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (50.0%)
SUB W2, W24, W17	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (25.0%)
ADD X3, X14, X17,LSL #3	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	N/A
ORR X0, XZR, XZR	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (50.0%)
ORR W16, WZR, WZR	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	N/A
B 419e14 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x234>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADD X0, X0, #2	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (50.0%)
SUB X1, X1, #2	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (50.0%)
SUB W2, W2, #2	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (25.0%)
ADD X3, X3, #16	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	N/A
CBZ X1, 419cf0 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x110>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDUR D2, [X3, #504]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33	scal (50.0%)
FCMP D2, D1	1	0	0	0	0	0	0	0	0	1	0	0	0	0	2	1	scal (50.0%)
CCMP W2, #0, #4, #11	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	1	1	scal (25.0%)
B.NE 419e40 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x260>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR D2, [X3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33	scal (50.0%)
FCMP D2, D1	1	0	0	0	0	0	0	0	0	1	0	0	0	0	2	1	scal (50.0%)
CCMP W2, #1, #4, #11	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	1	1	scal (25.0%)
B.EQ 419e00 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x220>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
B 419e58 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x278>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
STR D2, [X13, X16,SXTW #3]	1	0	0	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50	scal (50.0%)
ADD W16, W16, #1	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	N/A
B 419e00 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x220>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A

Function	miniqmcreference::TwoBodyJastrowRef >::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)
Source file and lines	BsplineFunctor.h:233-260
Module	exec

The loop is defined in:

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Numerics/OhmmsPETE/OhmmsVector.h:223,229
/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/TwoBodyJastrowRef.h:107-108,126-132
/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Particle/ParticleSet.h:313
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/optional:469,991
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_vector.h:993,1131,1150
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/refwrap.h:351
/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/BsplineFunctor.h:233-260

Analyzed code is defined in /home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/BsplineFunctor.h:236-241.

Warnings:

Non-innermost loop: analyzing only self part (ignoring child loops).
Ignoring paths for analysis
Failed to get the number of paths
RecMII not computed since number of paths is unknown or > max_paths
Streams not analyzed since number of paths is unknown or > max_paths

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 3.00 to 1.17 cycles (2.57x speedup).

Workaround

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

Vectorization

Details

All VPU instructions are used in scalar version (process only one data element in vector registers). Since your execution units are vector units, only a vectorized loop can use their full power.

Workaround

Try another compiler or update/tune your current one
Remove inter-iterations dependences from your loop and make it unit-stride:
- If your arrays have 2 or more dimensions, check whether elements are accessed contiguously and, otherwise, try to permute loops accordingly: C storage order is row-major: for(i) for(j) a[j][i] = b[j][i]; (slow, non stride 1) => for(i) for(j) a[i][j] = b[i][j]; (fast, stride 1)
- If your loop 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

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

The binary loop does not contain any FP arithmetical operations. The binary loop is loading 16 bytes. The binary loop is storing 8 bytes.

General properties

nb instructions	23
loop length	92
nb stack references	0

Front-end

FIT IN UOP CACHE

front end

2.88 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16
uops	3.00	3.00	2.00	2.00	2.00	2.00	2.00	2.00	2.00	1.00	0.00	0.00	1.17	0.83	1.00	0.00	0.00
cycles	3.00	3.00	2.00	2.00	2.00	2.00	2.00	2.00	2.00	1.00	0.00	0.00	1.17	0.83	1.00	0.00	0.00

Execution ports to units layout:

P0: BRU
P1: BRU
P2: ALU
P3: ALU
P4: ALU
P5: ALU
P6: ALU
P7: ALU
P8 (128 bits): VPU, FP store data, ALU, DIV/SQRT
P9 (128 bits): VPU, ALU, FP store data
P10 (128 bits): VPU, ALU, DIV/SQRT
P11 (128 bits): ALU, VPU
P12 (256 bits): store address, load
P13 (256 bits): store address, load
P14 (256 bits): load
P15 (64 bits): store data
P16 (64 bits): store data

Cycles executing div or sqrt instructions

Cycles summary

Front-end	2.88
Overall L1	3.00

Vectorization ratios

INT

all	0%
load	0%
store	0%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	0%
fma	NA (no fma vectorizable/vectorized instructions)
other	0%

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

INT+FP

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

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each iteration of the binary loop takes 3.00 cycles. At this rate:

5% of peak load performance is reached (5.33 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
5% of peak store performance is reached (2.67 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

ASM code

In the binary file, the address of the loop is: 419e00

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P12	P13	P14	Latency	Recip. throughput	Vectorization
AND X1, X18, #6015	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (50.0%)
SUB W2, W24, W17	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (25.0%)
ADD X3, X14, X17,LSL #3	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	N/A
ORR X0, XZR, XZR	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (50.0%)
ORR W16, WZR, WZR	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	N/A
B 419e14 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x234>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADD X0, X0, #2	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (50.0%)
SUB X1, X1, #2	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (50.0%)
SUB W2, W2, #2	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	scal (25.0%)
ADD X3, X3, #16	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	N/A
CBZ X1, 419cf0 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x110>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDUR D2, [X3, #504]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33	scal (50.0%)
FCMP D2, D1	1	0	0	0	0	0	0	0	0	1	0	0	0	0	2	1	scal (50.0%)
CCMP W2, #0, #4, #11	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	1	1	scal (25.0%)
B.NE 419e40 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x260>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR D2, [X3]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33	scal (50.0%)
FCMP D2, D1	1	0	0	0	0	0	0	0	0	1	0	0	0	0	2	1	scal (50.0%)
CCMP W2, #1, #4, #11	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	1	1	scal (25.0%)
B.EQ 419e00 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x220>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
B 419e58 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x278>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
STR D2, [X13, X16,SXTW #3]	1	0	0	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50	scal (50.0%)
ADD W16, W16, #1	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	1	0.17	N/A
B 419e00 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x220>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A

Report Configuration

Code clean check

Workaround

Vectorization

Details

Workaround

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Cycles and memory resources usage

ASM code

Code clean check

Workaround

Vectorization

Details

Workaround

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Cycles and memory resources usage

ASM code