OV - exec - Function qmcplusplus::TimerType<std::chrono::_V2::system

	Function: qmcplusplus::TimerType<std::chrono::_V2::system_clock>::start()	Module: exec	Source: NewTimer.cpp:37-81 [...]	Coverage (incl. loops): 0.03% \| (excl. loops): 0.03%

/usr/include/c++/14/bits/stl_vector.h: 993 - 993

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

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

/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.h: 90 - 99

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

90:     short_buckets[level] = c1;

91:     if (level >= max_level - 1)

92:     {

93:       timer_max_level_exceeded = true;

94:     }

95:     else

96:     {

97:       level++;

98:     }

99:   }

/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp: 37 - 81

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

37: void TimerType<CLOCK>::start()

38: {

39:   if (active)

[...]

53:     for (int level = omp_get_level(); level > 0; level--)

54:       if (omp_get_ancestor_thread_num(level) != 0)

55:         is_true_master = false;

56:     if (is_true_master)

57:     {

58:       if (manager)

59:       {

60:         // compute current_stack_key

61:         TimerType* parent = manager->current_timer();

62:         if (parent)

63:         {

64:           current_stack_key = parent->get_stack_key();

65:           current_stack_key.add_id(timer_id);

66:         }

67:         else

68:         {

69:           current_stack_key = StackKey();

70:           current_stack_key.add_id(timer_id);

71:         }

72:

73:         manager->push_timer(this);

74:       }

75:       start_time = CLOCK::now();

[...]

81: }

/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/TimerManager.h: 92 - 93

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

92:     if (CurrentTimerStack.size() > 0)

93:       current = CurrentTimerStack.back();

0x4cf800 STP	X29, X30, [SP, #976]!

0x4cf804 ADD	X29, SP, #0

0x4cf808 STP	X19, X20, [SP, #16]

0x4cf80c LDRB	W20, [X0, #56]

0x4cf810 TBNZ	W20, #0, 4cf820

0x4cf814 LDP	X19, X20, [SP, #16]

0x4cf818 LDP	X29, X30, [SP], #48

0x4cf81c RET

0x4cf820 STP	X21, X22, [SP, #32]

0x4cf824 ORR	X22, XZR, X0

0x4cf828 BL	410720

0x4cf82c ORR	W19, WZR, W0

0x4cf830 CMP	W0, #0

0x4cf834 B.LE	4cf9e0

0x4cf838 ANDS	W1, W0, #0x7

0x4cf83c SUB	W21, W0, #1

0x4cf840 B.EQ	4cf908

0x4cf844 CMP	W1, #1

0x4cf848 B.EQ	4cf8ec

0x4cf84c CMP	W1, #2

0x4cf850 B.EQ	4cf8d4

0x4cf854 CMP	W1, #3

0x4cf858 B.EQ	4cf8bc

0x4cf85c CMP	W1, #4

0x4cf860 B.EQ	4cf8a4

0x4cf864 CMP	W1, #5

0x4cf868 B.EQ	4cf88c

0x4cf86c CMP	W1, #6

0x4cf870 B.NE	4cfa48

0x4cf874 ORR	W0, WZR, W19

0x4cf878 SUB	W19, W19, #1

0x4cf87c BL	410430

0x4cf880 CMP	W0, #0

0x4cf884 CCMP	W20, #0, #4, #0

0x4cf888 CSINC	W20, WZR, WZR, #0

0x4cf88c ORR	W0, WZR, W19

0x4cf890 SUB	W19, W19, #1

0x4cf894 BL	410430

0x4cf898 CMP	W0, #0

0x4cf89c CCMP	W20, #0, #4, #0

0x4cf8a0 CSINC	W20, WZR, WZR, #0

0x4cf8a4 ORR	W0, WZR, W19

0x4cf8a8 SUB	W19, W19, #1

0x4cf8ac BL	410430

0x4cf8b0 CMP	W0, #0

0x4cf8b4 CCMP	W20, #0, #4, #0

0x4cf8b8 CSINC	W20, WZR, WZR, #0

0x4cf8bc ORR	W0, WZR, W19

0x4cf8c0 SUB	W19, W19, #1

0x4cf8c4 BL	410430

0x4cf8c8 CMP	W0, #0

0x4cf8cc CCMP	W20, #0, #4, #0

0x4cf8d0 CSINC	W20, WZR, WZR, #0

0x4cf8d4 ORR	W0, WZR, W19

0x4cf8d8 SUB	W19, W19, #1

0x4cf8dc BL	410430

0x4cf8e0 CMP	W0, #0

0x4cf8e4 CCMP	W20, #0, #4, #0

0x4cf8e8 CSINC	W20, WZR, WZR, #0

0x4cf8ec ORR	W0, WZR, W19

0x4cf8f0 BL	410430

0x4cf8f4 CMP	W0, #0

0x4cf8f8 CCMP	W20, #0, #4, #0

0x4cf8fc CSINC	W20, WZR, WZR, #0

0x4cf900 SUBS	W19, W19, #1

0x4cf904 B.EQ	4cf9cc

(1962) 0x4cf908 ORR	W0, WZR, W19

(1962) 0x4cf90c SUB	W21, W19, #1

(1962) 0x4cf910 BL	410430

(1962) 0x4cf914 CMP	W0, #0

(1962) 0x4cf918 ORR	W0, WZR, W21

(1962) 0x4cf91c CCMP	W20, #0, #4, #0

(1962) 0x4cf920 CSINC	W20, WZR, WZR, #0

(1962) 0x4cf924 BL	410430

(1962) 0x4cf928 ORR	W2, WZR, W0

(1962) 0x4cf92c SUB	W0, W21, #1

(1962) 0x4cf930 CMP	W2, #0

(1962) 0x4cf934 CCMP	W20, #0, #4, #0

(1962) 0x4cf938 CSINC	W21, WZR, WZR, #0

(1962) 0x4cf93c BL	410430

(1962) 0x4cf940 ORR	W3, WZR, W0

(1962) 0x4cf944 SUB	W0, W19, #3

(1962) 0x4cf948 CMP	W3, #0

(1962) 0x4cf94c CCMP	W21, #0, #4, #0

(1962) 0x4cf950 CSINC	W20, WZR, WZR, #0

(1962) 0x4cf954 BL	410430

(1962) 0x4cf958 ORR	W4, WZR, W0

(1962) 0x4cf95c SUB	W0, W19, #4

(1962) 0x4cf960 CMP	W4, #0

(1962) 0x4cf964 CCMP	W20, #0, #4, #0

(1962) 0x4cf968 CSINC	W21, WZR, WZR, #0

(1962) 0x4cf96c BL	410430

(1962) 0x4cf970 ORR	W5, WZR, W0

(1962) 0x4cf974 SUB	W0, W19, #5

(1962) 0x4cf978 CMP	W5, #0

(1962) 0x4cf97c CCMP	W21, #0, #4, #0

(1962) 0x4cf980 CSINC	W20, WZR, WZR, #0

(1962) 0x4cf984 BL	410430

(1962) 0x4cf988 ORR	W6, WZR, W0

(1962) 0x4cf98c SUB	W0, W19, #6

(1962) 0x4cf990 CMP	W6, #0

(1962) 0x4cf994 CCMP	W20, #0, #4, #0

(1962) 0x4cf998 CSINC	W21, WZR, WZR, #0

(1962) 0x4cf99c BL	410430

(1962) 0x4cf9a0 ORR	W7, WZR, W0

(1962) 0x4cf9a4 SUB	W0, W19, #7

(1962) 0x4cf9a8 CMP	W7, #0

(1962) 0x4cf9ac CCMP	W21, #0, #4, #0

(1962) 0x4cf9b0 CSINC	W20, WZR, WZR, #0

(1962) 0x4cf9b4 BL	410430

(1962) 0x4cf9b8 CMP	W0, #0

(1962) 0x4cf9bc CCMP	W20, #0, #4, #0

(1962) 0x4cf9c0 CSINC	W20, WZR, WZR, #0

(1962) 0x4cf9c4 SUBS	W19, W19, #8

(1962) 0x4cf9c8 B.NE	4cf908

0x4cf9cc TBNZ	W20, #0, 4cf9e0

0x4cf9d0 LDP	X21, X22, [SP, #32]

0x4cf9d4 LDP	X19, X20, [SP, #16]

0x4cf9d8 LDP	X29, X30, [SP], #48

0x4cf9dc RET

0x4cf9e0 LDR	X0, [X22, #72]

0x4cf9e4 CBZ	X0, 4cfa30

0x4cf9e8 LDP	X9, X10, [X0, #72]

0x4cf9ec LDRB	W8, [X22, #64]

0x4cf9f0 CMP	X9, X10

0x4cf9f4 B.EQ	4cfa70

0x4cf9f8 LDUR	X11, [X10, #504]

0x4cf9fc CBZ	X11, 4cfa70

0x4cfa00 LDP	X14, X15, [X11, #80]

0x4cfa04 ADD	X13, X22, #80

0x4cfa08 LDR	W16, [X11, #96]

0x4cfa0c STP	X14, X15, [X22, #80]

0x4cfa10 STR	W16, [X13, #16]

0x4cfa14 STRB	W8, [X13, W16,SXTW]

0x4cfa18 CMP	W16, #14

0x4cfa1c B.GT	4cfa60

0x4cfa20 ADD	W15, W16, #1

0x4cfa24 STR	W15, [X13, #16]

0x4cfa28 ORR	X1, XZR, X22

0x4cfa2c BL	4d55a0

0x4cfa30 BL	4104b0

0x4cfa34 STR	X0, [X22]

0x4cfa38 LDP	X21, X22, [SP, #32]

0x4cfa3c LDP	X19, X20, [SP, #16]

0x4cfa40 LDP	X29, X30, [SP], #48

0x4cfa44 RET

0x4cfa48 BL	410430

0x4cfa4c CMP	W0, #0

0x4cfa50 ORR	W19, WZR, W21

0x4cfa54 CCMP	W20, #0, #4, #0

0x4cfa58 CSINC	W20, WZR, WZR, #0

0x4cfa5c B	4cf874

0x4cfa60 ADRP	X17,

0x4cfa64 MOVZ	W18, #1

0x4cfa68 STRB	W18, [X17, #1912]

0x4cfa6c B	4cfa28

0x4cfa70 MOVZ	W12, #1

0x4cfa74 STP	XZR, XZR, [X22, #80]

0x4cfa78 STRB	W8, [X22, #80]

0x4cfa7c STR	W12, [X22, #96]

0x4cfa80 B	4cfa28

0x4cfa84 HINT	#0

0x4cfa88 HINT	#0

0x4cfa8c HINT	#0

0x4cfa90 HINT	#0

0x4cfa94 HINT	#0

0x4cfa98 HINT	#0

0x4cfa9c HINT	#0

Coverage (%)	Name	Source Location	Module
►10.26+	qmcplusplus::WaveFunction::rat[...]	NewTimer.h:242	exec
○	main._omp_fn.1	stl_vector.h:1128	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►8.58+	qmcplusplus::SoaDistanceTableA[...]	SoaDistanceTableABOMPTarget.h:189	exec
○	qmcplusplus::ParticleSet::upda[...]	stl_vector.h:993	exec
○	main._omp_fn.1	NonLocalPP.hpp:135	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►7.46+	qmcplusplus::ParticleSet::acce[...]	unique_ptr.h:455	exec
○	main._omp_fn.1	miniqmc.cpp:453	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►7.28+	qmcplusplus::WaveFunction::eva[...]	WaveFunction.cpp:272	exec
○	main._omp_fn.1	NonLocalPP.hpp:126	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►7.09+	qmcplusplus::ParticleSet::upda[...]	unique_ptr.h:455	exec
○	main._omp_fn.1	NonLocalPP.hpp:135	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►6.34+	qmcplusplus::WaveFunction::eva[...]	stl_vector.h:1128	exec
○	main._omp_fn.1	stl_vector.h:1131	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►4.66+	qmcplusplus::SoaDistanceTableA[...]	OhmmsVector.h:248	exec
○	qmcplusplus::ParticleSet::acce[...]	ParticleSet.cpp:389	exec
○	main._omp_fn.1	miniqmc.cpp:453	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►3.73+	miniqmcreference::DiracDetermi[...]	DiracDeterminantRef.cpp:213	exec
○	qmcplusplus::WaveFunction::eva[...]	WaveFunction.cpp:266	exec
○	main._omp_fn.1	NonLocalPP.hpp:126	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►3.73+	qmcplusplus::SoaDistanceTableA[...]	unique_ptr.h:464	exec
○	qmcplusplus::ParticleSet::make[...]	ParticleSet.cpp:343	exec
○	main._omp_fn.1	miniqmc.cpp:440	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►3.36+	qmcplusplus::SoaDistanceTableA[...]	stl_vector.h:1128	exec
○	qmcplusplus::ParticleSet::acce[...]	ParticleSet.cpp:389	exec
○	main._omp_fn.1	miniqmc.cpp:453	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►3.36+	qmcplusplus::SoaDistanceTableA[...]	OhmmsVector.h:149	exec
○	qmcplusplus::ParticleSet::make[...]	ParticleSet.cpp:343	exec
○	main._omp_fn.1	miniqmc.cpp:440	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►3.17+	miniqmcreference::DiracDetermi[...]	unique_ptr.h:193	exec
○	qmcplusplus::WaveFunction::rat[...]	WaveFunction.cpp:196	exec
○	main._omp_fn.1	stl_vector.h:1128	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►2.61+	qmcplusplus::WaveFunction::acc[...]	NewTimer.h:242	exec
○	main._omp_fn.1	stl_vector.h:1128	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►2.61+	miniqmcreference::DiracDetermi[...]	DiracDeterminantRef.cpp:102	exec
○	qmcplusplus::WaveFunction::rat[...]	WaveFunction.cpp:196	exec
○	main._omp_fn.1	stl_vector.h:1128	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►2.61+	miniqmcreference::DiracDetermi[...]	unique_ptr.h:193	exec
○	qmcplusplus::WaveFunction::rat[...]	WaveFunction.cpp:196	exec
○	main._omp_fn.1	stl_vector.h:1128	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►2.61+	main._omp_fn.1	TinyVector.h:59	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►2.43+	miniqmcreference::DiracDetermi[...]	DiracDeterminantRef.cpp:213	exec
○	qmcplusplus::WaveFunction::eva[...]	stl_vector.h:992	exec
○	main._omp_fn.1	NonLocalPP.hpp:126	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►2.43+	miniqmcreference::einspline_sp[...]	ParticleSet.h:143	exec
○	miniqmcreference::DiracDetermi[...]	DiracDeterminantRef.cpp:100	exec
○	qmcplusplus::WaveFunction::rat[...]	WaveFunction.cpp:196	exec
○	main._omp_fn.1	stl_vector.h:1128	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►2.43+	main._omp_fn.1	miniqmc.cpp:433	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►2.05+	qmcplusplus::SoaDistanceTableA[...]	NewTimer.h:242	exec
○	qmcplusplus::ParticleSet::upda[...]	stl_vector.h:993	exec
○	main._omp_fn.1	NonLocalPP.hpp:135	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►1.68+	miniqmcreference::DiracDetermi[...]	DiracDeterminantRef.cpp:102	exec
○	qmcplusplus::WaveFunction::rat[...]	WaveFunction.cpp:196	exec
○	main._omp_fn.1	stl_vector.h:1128	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►1.31+	qmcplusplus::ParticleSet::make[...]	stl_vector.h:992	exec
○	main._omp_fn.1	miniqmc.cpp:440	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►1.12+	miniqmcreference::einspline_sp[...]	ParticleSet.h:143	exec
○	miniqmcreference::DiracDetermi[...]	OhmmsVector.h:248	exec
○	qmcplusplus::WaveFunction::eva[...]	WaveFunction.cpp:266	exec
○	main._omp_fn.1	NonLocalPP.hpp:126	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►1.12+	miniqmcreference::DiracDetermi[...]	OhmmsMatrix.h:214	exec
○	qmcplusplus::WaveFunction::eva[...]	WaveFunction.cpp:183	exec
○	main._omp_fn.1	stl_vector.h:1131	exec
○	omp_fulfill_event		libgomp.so.1.0.0
○	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 0.03% of application time for run gcc_1

Source file and lines	NewTimer.cpp:37-81
Module	exec

The function is defined in:

/usr/include/c++/14/bits/stl_vector.h:993
/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.h:90-99
/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:37-39,53-75,81
/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/TimerManager.h:92-93

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Vectorization

Your function is not vectorized. Only 19% of vector register length is used (average across all VPU instructions). By vectorizing your function, you can lower the cost of an iteration from 16.25 to 2.33 cycles (6.98x 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)

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.

qmcplusplus::TimerManager
>::push_timer(qmcplusplus::TimerType
*): 1 occurrences►
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:73
unknown: 9 occurrences►
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:53
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:75
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54

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 5 bytes. The binary function is storing 12 bytes.

General properties

nb instructions	119
nb uops	112
loop length	476
used w registers	11
used x registers	16
used b registers	0
used h registers	0
used s registers	1
used d registers	0
used q registers	0
used v registers	0
used z registers	0
nb stack references	11

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	14.00 cycles
front end	14.00 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	15.50	15.50	16.25	16.25	16.25	16.25	0.00	0.00	0.00	0.00	9.00	9.00	9.00	6.00	6.00
cycles	15.50	15.50	16.25	16.25	16.25	16.25	0.00	0.00	0.00	0.00	9.00	9.00	9.00	6.00	6.00

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	14.00
Dispatch	16.25
Overall L1	16.25

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%

Vector efficiency ratios

all	19%
load	39%
store	26%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	13%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	13%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 16.25 cycles. At this rate:

0% of peak load performance is reached (0.32 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
1% of peak store performance is reached (0.76 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: 4cf800

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	Latency	Recip. throughput	Vectorization
STP X29, X30, [SP, #976]!	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
ADD X29, SP, #0	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%)
STP X19, X20, [SP, #16]	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%)
LDRB W20, [X0, #56]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (3.1%)
TBNZ W20, #0, 4cf820 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x20>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X19, X20, [SP, #16]	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], #48	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (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
STP X21, X22, [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 X22, XZR, X0	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
BL 410720 <@plt_start@+0x700>	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
ORR W19, WZR, W0	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%)
CMP W0, #0	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%)
B.LE 4cf9e0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1e0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ANDS W1, W0, #0x7	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%)
SUB W21, W0, #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%)
B.EQ 4cf908 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x108>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #1	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%)
B.EQ 4cf8ec <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xec>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #2	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%)
B.EQ 4cf8d4 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xd4>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #3	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%)
B.EQ 4cf8bc <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xbc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #4	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%)
B.EQ 4cf8a4 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xa4>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #5	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%)
B.EQ 4cf88c <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x8c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #6	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%)
B.NE 4cfa48 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x248>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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 W19, W19, #1	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%)
B.EQ 4cf9cc <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1cc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
TBNZ W20, #0, 4cf9e0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1e0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X21, X22, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X19, X20, [SP, #16]	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], #48	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (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
LDR X0, [X22, #72]	1	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, 4cfa30 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x230>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X9, X10, [X0, #72]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDRB W8, [X22, #64]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (3.1%)
CMP X9, 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%)
B.EQ 4cfa70 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x270>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDUR X11, [X10, #504]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
CBZ X11, 4cfa70 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x270>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X14, X15, [X11, #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%)
ADD X13, X22, #80	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 W16, [X11, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
STP X14, X15, [X22, #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%)
STR W16, [X13, #16]	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%)
STRB W8, [X13, W16,SXTW]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (3.1%)
CMP W16, #14	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%)
B.GT 4cfa60 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x260>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADD W15, W16, #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 W15, [X13, #16]	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%)
ORR X1, XZR, X22	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%)
BL 4d55a0 <_ZN11qmcplusplus12TimerManagerINS_9TimerTypeINSt6chrono3_V212system_clockEEEE10push_timerEPS5_>	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
BL 4104b0 <@plt_start@+0x490>	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
STR X0, [X22]	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%)
LDP X21, X22, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X19, X20, [SP, #16]	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], #48	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (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
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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%)
ORR W19, WZR, W21	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%)
CCMP W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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 4cf874 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x74>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADRP X17, <581a60>	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 W18, #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%)
STRB W18, [X17, #1912]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (3.1%)
B 4cfa28 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x228>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MOVZ W12, #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%)
STP XZR, XZR, [X22, #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%)
STRB W8, [X22, #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 (3.1%)
STR W12, [X22, #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 (12.5%)
B 4cfa28 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x228>	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
HINT #0																			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 0.03% of application time for run gcc_1

Source file and lines	NewTimer.cpp:37-81
Module	exec

The function is defined in:

/usr/include/c++/14/bits/stl_vector.h:993
/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.h:90-99
/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:37-39,53-75,81
/home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/TimerManager.h:92-93

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)

No data for this section

CALL instructions

Detected function call instructions.

Details

qmcplusplus::TimerManager
>::push_timer(qmcplusplus::TimerType
*): 1 occurrences►
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:73
unknown: 9 occurrences►
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:53
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:75
- /home/eoseret/qaas/qaas_runs/178-212-9071/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54

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 5 bytes. The binary function is storing 12 bytes.

General properties

nb instructions	119
nb uops	112
loop length	476
used w registers	11
used x registers	16
used b registers	0
used h registers	0
used s registers	1
used d registers	0
used q registers	0
used v registers	0
used z registers	0
nb stack references	11

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	14.00 cycles
front end	14.00 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	15.50	15.50	16.25	16.25	16.25	16.25	0.00	0.00	0.00	0.00	9.00	9.00	9.00	6.00	6.00
cycles	15.50	15.50	16.25	16.25	16.25	16.25	0.00	0.00	0.00	0.00	9.00	9.00	9.00	6.00	6.00

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	14.00
Dispatch	16.25
Overall L1	16.25

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%

Vector efficiency ratios

all	19%
load	39%
store	26%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	13%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	13%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 16.25 cycles. At this rate:

0% of peak load performance is reached (0.32 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
1% of peak store performance is reached (0.76 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: 4cf800

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	Latency	Recip. throughput	Vectorization
STP X29, X30, [SP, #976]!	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
ADD X29, SP, #0	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%)
STP X19, X20, [SP, #16]	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%)
LDRB W20, [X0, #56]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (3.1%)
TBNZ W20, #0, 4cf820 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x20>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X19, X20, [SP, #16]	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], #48	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (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
STP X21, X22, [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 X22, XZR, X0	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
BL 410720 <@plt_start@+0x700>	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
ORR W19, WZR, W0	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%)
CMP W0, #0	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%)
B.LE 4cf9e0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1e0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ANDS W1, W0, #0x7	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%)
SUB W21, W0, #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%)
B.EQ 4cf908 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x108>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #1	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%)
B.EQ 4cf8ec <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xec>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #2	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%)
B.EQ 4cf8d4 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xd4>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #3	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%)
B.EQ 4cf8bc <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xbc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #4	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%)
B.EQ 4cf8a4 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xa4>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #5	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%)
B.EQ 4cf88c <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x8c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CMP W1, #6	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%)
B.NE 4cfa48 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x248>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
SUB W19, W19, #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%)
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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%)
ORR W0, 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	N/A
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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 W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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 W19, W19, #1	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%)
B.EQ 4cf9cc <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1cc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
TBNZ W20, #0, 4cf9e0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1e0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X21, X22, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X19, X20, [SP, #16]	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], #48	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (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
LDR X0, [X22, #72]	1	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, 4cfa30 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x230>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X9, X10, [X0, #72]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDRB W8, [X22, #64]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (3.1%)
CMP X9, 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%)
B.EQ 4cfa70 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x270>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDUR X11, [X10, #504]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
CBZ X11, 4cfa70 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x270>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X14, X15, [X11, #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%)
ADD X13, X22, #80	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 W16, [X11, #96]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	N/A
STP X14, X15, [X22, #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%)
STR W16, [X13, #16]	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%)
STRB W8, [X13, W16,SXTW]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (3.1%)
CMP W16, #14	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%)
B.GT 4cfa60 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x260>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADD W15, W16, #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 W15, [X13, #16]	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%)
ORR X1, XZR, X22	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%)
BL 4d55a0 <_ZN11qmcplusplus12TimerManagerINS_9TimerTypeINSt6chrono3_V212system_clockEEEE10push_timerEPS5_>	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
BL 4104b0 <@plt_start@+0x490>	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
STR X0, [X22]	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%)
LDP X21, X22, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	N/A
LDP X19, X20, [SP, #16]	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], #48	1	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	1	scal (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
BL 410430 <@plt_start@+0x410>	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
CMP W0, #0	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%)
ORR W19, WZR, W21	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%)
CCMP W20, #0, #4, #0	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%)
CSINC W20, WZR, WZR, #0	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 4cf874 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x74>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
ADRP X17, <581a60>	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 W18, #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%)
STRB W18, [X17, #1912]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (3.1%)
B 4cfa28 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x228>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MOVZ W12, #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%)
STP XZR, XZR, [X22, #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%)
STRB W8, [X22, #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 (3.1%)
STR W12, [X22, #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 (12.5%)
B 4cfa28 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x228>	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
HINT #0																			N/A
HINT #0																			N/A
HINT #0																			N/A
HINT #0																			N/A

Name	Coverage (%)	Time (s)
▼qmcplusplus::TimerType::start()–	0.03	0.04
○Loop 1962 - NewTimer.cpp:53-54 - exec	0.00	0.00

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

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ASM code

Vectorization

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CALL instructions

Details

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Vector efficiency ratios

Cycles and memory resources usage

Front-end bottlenecks

ASM code