OV - exec - Function qmcplusplus::WaveFunction::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector<double, std::allocator<double> >&)

	Function: qmcplusplus::WaveFunction::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector<do ...	Module: exec	Source: WaveFunction.cpp:261-276 [...]	Coverage (incl. loops): 0.01% \| (excl. loops): 0.01%

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.h: 242 - 249

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

242:   ScopeGuard(TIMER& t) : timer(t) { timer.start(); }

[...]

249:   ~ScopeGuard() { timer.stop(); }

/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_algobase.h: 952 - 1146

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

952: 	*__first = __tmp;

[...]

1146:       if (__n <= 0)

/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/new_allocator.h: 151 - 172

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

151: 	return static_cast<_Tp*>(_GLIBCXX_OPERATOR_NEW(__n * sizeof(_Tp)));

[...]

172: 	_GLIBCXX_OPERATOR_DELETE(_GLIBCXX_SIZED_DEALLOC(__p, __n));

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/WaveFunction.cpp: 261 - 276

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

261: {

262:   assert(VP.getTotalNum() == ratios.size());

263:   if (VP.refPtcl < nelup)

[...]

269:   for (size_t i = 0; i < Jastrows.size(); i++)

270:   {

271:     ScopedTimer local_timer(jastrow_timers[i]);

272:     Jastrows[i]->evaluateRatios(VP, t);

273:     for (int j = 0; j < ratios.size(); ++j)

274:       ratios[j] *= t[j];

275:   }

276: }

/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: 368 - 1920

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

368: 	_M_deallocate(_M_impl._M_start,

369: 		      _M_impl._M_end_of_storage - _M_impl._M_start);

[...]

380: 	return __n != 0 ? _Tr::allocate(_M_impl, __n) : pointer();

[...]

388: 	if (__p)

[...]

398: 	this->_M_impl._M_start = this->_M_allocate(__n);

399: 	this->_M_impl._M_finish = this->_M_impl._M_start;

400: 	this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;

[...]

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

[...]

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

[...]

1719: 	this->_M_impl._M_finish =

[...]

1919: 	if (__n > _S_max_size(_Tp_alloc_type(__a)))

1920: 	  __throw_length_error(

/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_construct.h: 119 - 119

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

119:       ::new((void*)__p) _Tp(std::forward<_Args>(__args)...);

/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; }

0x40dee0 SUB	SP, SP, #96

0x40dee4 STP	X29, X30, [SP, #32]

0x40dee8 STR	X23, [SP, #48]

0x40deec STP	X22, X21, [SP, #64]

0x40def0 STP	X20, X19, [SP, #80]

0x40def4 ADD	X29, SP, #32

0x40def8 LDR	W8, [X1, #672]

0x40defc LDR	W9, [X0, #52]

0x40df00 ORR	X21, XZR, X0

0x40df04 ORR	X19, XZR, X2

0x40df08 ORR	X20, XZR, X1

0x40df0c CMP	W8, W9

0x40df10 CSINC	W8, WZR, WZR, #11

0x40df14 LDR	X0, [X0, X8,UXTW #3]

0x40df18 LDR	X8, [X0]

0x40df1c LDR	X8, [X8, #72]

0x40df20 BLR	X8

0x40df24 LDP	X9, X8, [X19]

0x40df28 MOVN	X10, #6

0x40df2c MOVK	X10, #32767

0x40df30 SUB	X22, X8, X9

0x40df34 CMP	X22, X10

0x40df38 B.CS	40e170

0x40df3c CMP	X8, X9

0x40df40 B.EQ	40dfb8

0x40df44 ORR	X0, XZR, X22

0x40df48 BL	4044f0

0x40df4c ADD	X23, X0, X22

0x40df50 ORR	X8, XZR, X0

0x40df54 STR	XZR, [X8], #8

0x40df58 SUBS	X2, X22, #8

0x40df5c STR	X0, [SP, #8]

0x40df60 STR	X23, [SP, #24]

0x40df64 B.EQ	40df80

0x40df68 ORR	X22, XZR, X0

0x40df6c ORR	X0, XZR, X8

0x40df70 ORR	W1, WZR, WZR

0x40df74 BL	404920

0x40df78 ORR	X0, XZR, X22

0x40df7c ORR	X8, XZR, X23

0x40df80 STR	X8, [SP, #16]

0x40df84 LDP	X9, X8, [X21, #16]

0x40df88 CMP	X8, X9

0x40df8c B.NE	40dfd0

      (116) 0x40df90 CBZ	X0, 40dfa0

    (117) 0x40df94 LDR	X8, [SP, #24]

    (117) 0x40df98 SUB	X1, X8, X0

    (117) 0x40df9c BL	4044d0

      (116) 0x40dfa0 LDP	X20, X19, [SP, #80]

      (116) 0x40dfa4 LDP	X22, X21, [SP, #64]

      (116) 0x40dfa8 LDR	X23, [SP, #48]

      (116) 0x40dfac LDP	X29, X30, [SP, #32]

      (116) 0x40dfb0 ADD	SP, SP, #96

      (116) 0x40dfb4 RET

      (116) 0x40dfb8 ORR	X0, XZR, XZR

      (116) 0x40dfbc STP	XZR, XZR, [SP, #8]

      (116) 0x40dfc0 STP	XZR, XZR, [SP, #16]

      (116) 0x40dfc4 LDP	X9, X8, [X21, #16]

      (116) 0x40dfc8 CMP	X8, X9

      (116) 0x40dfcc B.EQ	40df90

  (111) 0x40dfd0 ORR	X23, XZR, XZR

  (111) 0x40dfd4 HINT	#0

  (111) 0x40dfd8 HINT	#0

  (111) 0x40dfdc HINT	#0

  (111) 0x40dfe0 LDR	X8, [X21, #88]

  (111) 0x40dfe4 LDR	X22, [X8, X23,LSL #3]

  (111) 0x40dfe8 ORR	X0, XZR, X22

  (111) 0x40dfec BL	468a00

  (111) 0x40dff0 LDR	X8, [X21, #16]

  (111) 0x40dff4 LDR	X0, [X8, X23,LSL #3]

  (111) 0x40dff8 LDR	X8, [X0]

  (111) 0x40dffc LDR	X8, [X8, #72]

  (111) 0x40e000 ADD	X2, SP, #8

  (111) 0x40e004 ORR	X1, XZR, X20

  (111) 0x40e008 BLR	X8

  (111) 0x40e00c LDP	X8, X9, [X19]

  (111) 0x40e010 SUBS	X9, X9, X8

  (111) 0x40e014 B.EQ	40e148

  (111) 0x40e018 SBFM	X10, X9, #3, #63

  (111) 0x40e01c LDR	X9, [SP, #8]

  (111) 0x40e020 CMP	X10, #1

  (111) 0x40e024 CSINC	X11, X10, XZR, #8

  (111) 0x40e028 CMP	X10, #3

  (111) 0x40e02c B.LS	40e0a0

  (111) 0x40e030 ADD	X13, X9, X11,LSL #3

  (111) 0x40e034 ADD	X12, X8, X11,LSL #3

  (111) 0x40e038 CMP	X8, X13

  (111) 0x40e03c CCMP	X9, X12, #2, #3

  (111) 0x40e040 B.CC	40e0a0

  (111) 0x40e044 AND	X12, X11, #8062

  (111) 0x40e048 ADD	X13, X9, #16

  (111) 0x40e04c ADD	X14, X8, #16

  (111) 0x40e050 ORR	X15, XZR, X12

  (111) 0x40e054 HINT	#0

  (111) 0x40e058 HINT	#0

  (111) 0x40e05c HINT	#0

    (113) 0x40e060 LDP	Q0, Q1, [X13, #2032]

    (113) 0x40e064 LDP	Q2, Q3, [X14, #2032]

    (113) 0x40e068 ADD	X13, X13, #32

    (113) 0x40e06c SUBS	X15, X15, #4

    (113) 0x40e070 FMUL	V1.2D, V3.2D, V1.2D

    (113) 0x40e074 FMUL	V0.2D, V2.2D, V0.2D

    (113) 0x40e078 STP	Q0, Q1, [X14, #2032]

    (113) 0x40e07c ADD	X14, X14, #32

    (113) 0x40e080 B.NE	40e060

  (111) 0x40e084 CMP	X10, X12

  (111) 0x40e088 B.EQ	40e148

  (115) 0x40e08c ANDS	X14, X11, #4160

  (115) 0x40e090 ORR	X13, XZR, X12

  (115) 0x40e094 B.NE	40e0b0

  (115) 0x40e098 B	40e0dc

0x40e09c HINT	#0

(112) 0x40e0a0 ORR	X12, XZR, XZR

(112) 0x40e0a4 ANDS	X14, X11, #4160

(112) 0x40e0a8 ORR	X13, XZR, X12

(112) 0x40e0ac B.EQ	40e0dc

  (115) 0x40e0b0 ORR	X13, XZR, X12

  (115) 0x40e0b4 HINT	#0

  (115) 0x40e0b8 HINT	#0

  (115) 0x40e0bc HINT	#0

    (114) 0x40e0c0 LDR	D0, [X9, X13,LSL #3]

    (114) 0x40e0c4 LDR	D1, [X8, X13,LSL #3]

    (114) 0x40e0c8 SUBS	X14, X14, #1

    (114) 0x40e0cc FMUL	D0, D1, D0

    (114) 0x40e0d0 STR	D0, [X8, X13,LSL #3]

    (114) 0x40e0d4 ADD	X13, X13, #1

    (114) 0x40e0d8 B.NE	40e0c0

  (115) 0x40e0dc SUB	X11, X12, X11

  (115) 0x40e0e0 CMN	X11, #4

  (115) 0x40e0e4 B.HI	40e148

(112) 0x40e0e8 ADD	X8, X8, X13,LSL #3

(112) 0x40e0ec ADD	X9, X9, X13,LSL #3

(112) 0x40e0f0 SUB	X10, X10, X13

(112) 0x40e0f4 ADD	X8, X8, #16

(112) 0x40e0f8 ADD	X9, X9, #16

(112) 0x40e0fc HINT	#0

  (118) 0x40e100 LDUR	D0, [X9, #496]

  (118) 0x40e104 LDP	D1, D2, [X8, #1008]

  (118) 0x40e108 SUBS	X10, X10, #4

  (118) 0x40e10c FMUL	D0, D1, D0

  (118) 0x40e110 STUR	D0, [X8, #496]

  (118) 0x40e114 LDUR	D0, [X9, #504]

  (118) 0x40e118 FMUL	D0, D2, D0

  (118) 0x40e11c LDP	D1, D2, [X8]

  (118) 0x40e120 STUR	D0, [X8, #504]

  (118) 0x40e124 LDR	D0, [X9]

  (118) 0x40e128 FMUL	D0, D1, D0

  (118) 0x40e12c STR	D0, [X8]

  (118) 0x40e130 LDR	D0, [X9, #8]

  (118) 0x40e134 ADD	X9, X9, #32

  (118) 0x40e138 FMUL	D0, D2, D0

  (118) 0x40e13c STR	D0, [X8, #8]

  (118) 0x40e140 ADD	X8, X8, #32

  (118) 0x40e144 B.NE	40e100

  (111) 0x40e148 ORR	X0, XZR, X22

  (111) 0x40e14c BL	468b20

  (111) 0x40e150 LDP	X9, X8, [X21, #16]

  (111) 0x40e154 ADD	X23, X23, #1

  (111) 0x40e158 SUB	X8, X8, X9

  (111) 0x40e15c CMP	X23, X8,ASR #3

  (111) 0x40e160 B.CC	40dfe0

  (111) 0x40e164 LDR	X0, [SP, #8]

  (111) 0x40e168 CBNZ	X0, 40df94

  (111) 0x40e16c B	40dfa0

0x40e170 ADRP	X0,

0x40e174 ADD	X0, X0, #556

0x40e178 BL	404840

0x40e17c ORR	X19, XZR, X0

0x40e180 B	40e190

0x40e184 ORR	X19, XZR, X0

0x40e188 ORR	X0, XZR, X22

0x40e18c BL	468b20

0x40e190 LDR	X0, [SP, #8]

0x40e194 CBZ	X0, 40e1a4

0x40e198 LDR	X8, [SP, #24]

0x40e19c SUB	X1, X8, X0

0x40e1a0 BL	4044d0

0x40e1a4 ORR	X0, XZR, X19

0x40e1a8 BL	4048a0

0x40e1ac BL	409c40

0x40e1b0 BL	409c40

0x40e1b4 HINT	#0

0x40e1b8 HINT	#0

0x40e1bc HINT	#0

Coverage (%)	Name	Source Location	Module
►98.53+	qmcplusplus::NonLocalPP<double[...]	NonLocalPP.hpp:126	exec
○	main.omp_outlined.63	NewTimer.h:249	exec
○	__kmp_invoke_microtask		libomp.so
►1.47+	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 /

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 0.01% of application time for run orig_0

Source file and lines	WaveFunction.cpp:261-276
Module	exec

The function is defined in:

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.h:242,249
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_algobase.h:952,1146
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/new_allocator.h:151,172
/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/WaveFunction.cpp:261-263,269-276
/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:368-369,380,388,398-400,993,1131,1719,1919-1920
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_construct.h:119
/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

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Vectorization

Your function is not vectorized. Only 54% of vector register length is used (average across all VPU instructions). By vectorizing your function, you can lower the cost of an iteration from 7.63 to 7.50 cycles (1.02x 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 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)

Expensive FP math instructions/calls

Detected performance impact from expensive FP math instructions/calls. By removing/reexpressing them, you can lower the cost of an iteration from 7.63 to 4.50 cycles (1.69x speedup).

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 80 bytes. The binary function is storing 88 bytes.

General properties

nb instructions	65
loop length	260
nb stack references	0

Front-end

FIT IN UOP CACHE

front end

7.63 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16
uops	7.50	7.50	6.50	6.50	6.50	6.50	6.50	6.50	0.00	0.00	0.00	0.00	5.67	5.67	5.67	4.00	4.00
cycles	7.50	7.50	6.50	6.50	6.50	6.50	6.50	6.50	0.00	0.00	0.00	0.00	5.67	5.67	5.67	4.00	4.00

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	7.63
Overall L1	7.63

Vectorization ratios

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 call to the function takes 7.63 cycles. At this rate:

10% of peak load performance is reached (10.49 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
24% of peak store performance is reached (11.54 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

ASM code

In the binary file, the address of the function is: 40dee0

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16	Latency	Recip. throughput	Vectorization
SUB SP, SP, #96	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
STP X29, X30, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
STR X23, [SP, #48]	1	0	0	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, #64]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
STP X20, X19, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
ADD X29, SP, #32	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
LDR W8, [X1, #672]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDR W9, [X0, #52]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
ORR X21, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR X19, XZR, X2	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR X20, XZR, X1	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
CMP W8, W9	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
CSINC W8, WZR, WZR, #11	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
LDR X0, [X0, X8,UXTW #3]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDR X8, [X0]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDR X8, [X8, #72]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
BLR X8	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X9, X8, [X19]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.50	N/A
MOVN X10, #6	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
MOVK X10, #32767	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
SUB X22, X8, X9	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
CMP X22, X10	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.CS 40e170 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0x290>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP X8, X9	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.EQ 40dfb8 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0xd8>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X0, XZR, X22	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 4044f0 <@plt_start@+0xd0>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADD X23, X0, X22	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
ORR X8, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
STR XZR, [X8], #8	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
SUBS X2, X22, #8	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
STR X0, [SP, #8]	1	0	0	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%)
STR X23, [SP, #24]	1	0	0	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%)
B.EQ 40df80 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0xa0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X22, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
ORR X0, XZR, X8	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR W1, WZR, WZR	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 404920 <@plt_start@+0x500>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X0, XZR, X22	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR X8, XZR, X23	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
STR X8, [SP, #16]	1	0	0	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%)
LDP X9, X8, [X21, #16]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.50	N/A
CMP X8, X9	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.NE 40dfd0 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0xf0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
HINT #0																					N/A
ADRP X0, <4ae170>	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X0, X0, #556	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 404840 <@plt_start@+0x420>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X19, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
B 40e190 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2b0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X19, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR X0, XZR, X22	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 468b20 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE4stopEv>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR X0, [SP, #8]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
CBZ X0, 40e1a4 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2c4>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR X8, [SP, #24]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
SUB X1, X8, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 4044d0 <@plt_start@+0xb0>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X0, XZR, X19	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 4048a0 <@plt_start@+0x480>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
BL 409c40 <__clang_call_terminate>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
BL 409c40 <__clang_call_terminate>	1	0.50	0.50	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 0.01% of application time for run orig_0

Source file and lines	WaveFunction.cpp:261-276
Module	exec

The function is defined in:

/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.h:242,249
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_algobase.h:952,1146
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/new_allocator.h:151,172
/home/hbollore/qaas/qaas-runs/174-135-6342/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/WaveFunction.cpp:261-263,269-276
/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:368-369,380,388,398-400,993,1131,1719,1919-1920
/opt/arm/gcc-14.2.0_AmazonLinux-2023/lib/gcc/aarch64-linux-gnu/14.2.0/../../../../include/c++/14.2.0/bits/stl_construct.h:119
/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

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

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 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)

Expensive FP math instructions/calls

Detected performance impact from expensive FP math instructions/calls. By removing/reexpressing them, you can lower the cost of an iteration from 7.63 to 4.50 cycles (1.69x speedup).

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 80 bytes. The binary function is storing 88 bytes.

General properties

nb instructions	65
loop length	260
nb stack references	0

Front-end

FIT IN UOP CACHE

front end

7.63 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16
uops	7.50	7.50	6.50	6.50	6.50	6.50	6.50	6.50	0.00	0.00	0.00	0.00	5.67	5.67	5.67	4.00	4.00
cycles	7.50	7.50	6.50	6.50	6.50	6.50	6.50	6.50	0.00	0.00	0.00	0.00	5.67	5.67	5.67	4.00	4.00

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	7.63
Overall L1	7.63

Vectorization ratios

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 call to the function takes 7.63 cycles. At this rate:

10% of peak load performance is reached (10.49 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
24% of peak store performance is reached (11.54 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

ASM code

In the binary file, the address of the function is: 40dee0

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16	Latency	Recip. throughput	Vectorization
SUB SP, SP, #96	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
STP X29, X30, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
STR X23, [SP, #48]	1	0	0	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, #64]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
STP X20, X19, [SP, #80]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
ADD X29, SP, #32	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
LDR W8, [X1, #672]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDR W9, [X0, #52]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (25.0%)
ORR X21, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR X19, XZR, X2	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR X20, XZR, X1	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
CMP W8, W9	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (25.0%)
CSINC W8, WZR, WZR, #11	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
LDR X0, [X0, X8,UXTW #3]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDR X8, [X0]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
LDR X8, [X8, #72]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
BLR X8	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X9, X8, [X19]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.50	N/A
MOVN X10, #6	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
MOVK X10, #32767	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
SUB X22, X8, X9	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
CMP X22, X10	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.CS 40e170 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0x290>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP X8, X9	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.EQ 40dfb8 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0xd8>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X0, XZR, X22	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 4044f0 <@plt_start@+0xd0>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADD X23, X0, X22	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
ORR X8, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
STR XZR, [X8], #8	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
SUBS X2, X22, #8	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
STR X0, [SP, #8]	1	0	0	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%)
STR X23, [SP, #24]	1	0	0	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%)
B.EQ 40df80 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0xa0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X22, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
ORR X0, XZR, X8	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR W1, WZR, WZR	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 404920 <@plt_start@+0x500>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X0, XZR, X22	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR X8, XZR, X23	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
STR X8, [SP, #16]	1	0	0	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%)
LDP X9, X8, [X21, #16]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.50	N/A
CMP X8, X9	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.NE 40dfd0 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0xf0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
HINT #0																					N/A
ADRP X0, <4ae170>	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.25	N/A
ADD X0, X0, #556	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 404840 <@plt_start@+0x420>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X19, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
B 40e190 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2b0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X19, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
ORR X0, XZR, X22	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 468b20 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE4stopEv>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR X0, [SP, #8]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
CBZ X0, 40e1a4 <_ZN11qmcplusplus12WaveFunction14evaluateRatiosERNS_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2c4>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDR X8, [SP, #24]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
SUB X1, X8, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 4044d0 <@plt_start@+0xb0>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR X0, XZR, X19	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
BL 4048a0 <@plt_start@+0x480>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
BL 409c40 <__clang_call_terminate>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
BL 409c40 <__clang_call_terminate>	1	0.50	0.50	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)
▼qmcplusplus::WaveFunction::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)–	0.01	0.02
▼Loop 112 - WaveFunction.cpp:269-276 - exec–	0.00	0.00
▼Loop 111 - WaveFunction.cpp:269-276 - exec–	0.01	0.01
○Loop 113 - WaveFunction.cpp:273-274 - exec	0.00	0.01
▼Loop 117 - WaveFunction.cpp:269-276 - exec–	0.00	0.00
○Loop 116 - WaveFunction.cpp:269-276 - exec	0.00	0.00
▼Loop 115 - WaveFunction.cpp:273-274 - exec–	0.00	0.00
○Loop 114 - WaveFunction.cpp:273-274 - exec	0.00	0.00
○Loop 118 - WaveFunction.cpp:273-274 - exec	0.00	0.00

Report Configuration

Vectorization

Details

Workaround

Expensive FP math instructions/calls

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Cycles and memory resources usage

ASM code

Vectorization

Details

Workaround

Expensive FP math instructions/calls

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Cycles and memory resources usage

ASM code