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): 0.01% \| (excl. loops): 0.01%

/home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/TimerManager.h: 92 - 93

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

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

93:       current = CurrentTimerStack.back();

/home/eoseret/qaas_runs_ZEN5/173-938-0042/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_runs_ZEN5/173-938-0042/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:   }

/cluster/comp/gcc/14.2.0/include/c++/14.2.0/bits/stl_vector.h: 993 - 993

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

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

0x531880 PUSH	%RBP

0x531881 MOV	%RSP,%RBP

0x531884 PUSH	%R14

0x531886 PUSH	%R13

0x531888 PUSH	%R12

0x53188a PUSH	%RBX

0x53188b MOVZX	0x38(%RDI),%EBX

0x53188f TEST	%BL,%BL

0x531891 JNE	5318a0

0x531893 POP	%RBX

0x531894 POP	%R12

0x531896 POP	%R13

0x531898 POP	%R14

0x53189a POP	%RBP

0x53189b RET

0x53189c NOPL	(%RAX)

0x5318a0 MOV	%RDI,%R13

0x5318a3 CALL	404780 <omp_get_level@plt>

0x5318a8 MOV	%EAX,%R12D

0x5318ab TEST	%EAX,%EAX

0x5318ad JLE	5319fc

0x5318b3 LEA	-0x1(%RAX),%R14D

0x5318b7 AND	$0x7,%EAX

0x5318ba JE	53195c

0x5318c0 CMP	$0x1,%EAX

0x5318c3 JE	531942

0x5318c5 CMP	$0x2,%EAX

0x5318c8 JE	53192e

0x5318ca CMP	$0x3,%EAX

0x5318cd JE	53191a

0x5318cf CMP	$0x4,%EAX

0x5318d2 JE	531907

0x5318d4 CMP	$0x5,%EAX

0x5318d7 JE	5318f4

0x5318d9 CMP	$0x6,%EAX

0x5318dc JNE	531a70

0x5318e2 MOV	%R12D,%EDI

0x5318e5 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

0x5318ea TEST	%EAX,%EAX

0x5318ec SETE	%CL

0x5318ef DEC	%R12D

0x5318f2 AND	%ECX,%EBX

0x5318f4 MOV	%R12D,%EDI

0x5318f7 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

0x5318fc TEST	%EAX,%EAX

0x5318fe SETE	%SIL

0x531902 DEC	%R12D

0x531905 AND	%ESI,%EBX

0x531907 MOV	%R12D,%EDI

0x53190a CALL	4045f0 <omp_get_ancestor_thread_num@plt>

0x53190f TEST	%EAX,%EAX

0x531911 SETE	%DIL

0x531915 DEC	%R12D

0x531918 AND	%EDI,%EBX

0x53191a MOV	%R12D,%EDI

0x53191d CALL	4045f0 <omp_get_ancestor_thread_num@plt>

0x531922 TEST	%EAX,%EAX

0x531924 SETE	%R8B

0x531928 DEC	%R12D

0x53192b AND	%R8D,%EBX

0x53192e MOV	%R12D,%EDI

0x531931 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

0x531936 TEST	%EAX,%EAX

0x531938 SETE	%R9B

0x53193c DEC	%R12D

0x53193f AND	%R9D,%EBX

0x531942 MOV	%R12D,%EDI

0x531945 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

0x53194a TEST	%EAX,%EAX

0x53194c SETE	%R10B

0x531950 AND	%R10D,%EBX

0x531953 DEC	%R12D

0x531956 JE	5319f4

(2101) 0x53195c MOV	%R12D,%EDI

(2101) 0x53195f CALL	4045f0 <omp_get_ancestor_thread_num@plt>

(2101) 0x531964 LEA	-0x1(%R12),%EDI

(2101) 0x531969 TEST	%EAX,%EAX

(2101) 0x53196b SETE	%R11B

(2101) 0x53196f AND	%R11D,%EBX

(2101) 0x531972 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

(2101) 0x531977 LEA	-0x2(%R12),%EDI

(2101) 0x53197c TEST	%EAX,%EAX

(2101) 0x53197e SETE	%R14B

(2101) 0x531982 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

(2101) 0x531987 LEA	-0x3(%R12),%EDI

(2101) 0x53198c AND	%R14D,%EBX

(2101) 0x53198f TEST	%EAX,%EAX

(2101) 0x531991 SETE	%AL

(2101) 0x531994 AND	%EAX,%EBX

(2101) 0x531996 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

(2101) 0x53199b LEA	-0x4(%R12),%EDI

(2101) 0x5319a0 TEST	%EAX,%EAX

(2101) 0x5319a2 SETE	%DL

(2101) 0x5319a5 AND	%EDX,%EBX

(2101) 0x5319a7 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

(2101) 0x5319ac LEA	-0x5(%R12),%EDI

(2101) 0x5319b1 TEST	%EAX,%EAX

(2101) 0x5319b3 SETE	%CL

(2101) 0x5319b6 AND	%ECX,%EBX

(2101) 0x5319b8 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

(2101) 0x5319bd LEA	-0x6(%R12),%EDI

(2101) 0x5319c2 TEST	%EAX,%EAX

(2101) 0x5319c4 SETE	%SIL

(2101) 0x5319c8 AND	%ESI,%EBX

(2101) 0x5319ca CALL	4045f0 <omp_get_ancestor_thread_num@plt>

(2101) 0x5319cf LEA	-0x7(%R12),%EDI

(2101) 0x5319d4 TEST	%EAX,%EAX

(2101) 0x5319d6 SETE	%R14B

(2101) 0x5319da CALL	4045f0 <omp_get_ancestor_thread_num@plt>

(2101) 0x5319df AND	%EBX,%R14D

(2101) 0x5319e2 TEST	%EAX,%EAX

(2101) 0x5319e4 SETE	%BL

(2101) 0x5319e7 AND	%R14D,%EBX

(2101) 0x5319ea SUB	$0x8,%R12D

(2101) 0x5319ee JNE	53195c

0x5319f4 TEST	%BL,%BL

0x5319f6 JE	531893

0x5319fc MOV	0x48(%R13),%RDI

0x531a00 TEST	%RDI,%RDI

0x531a03 JE	531a53

0x531a05 MOV	0x48(%RDI),%R12

0x531a09 MOVZX	0x40(%R13),%R8D

0x531a0e CMP	%R12,0x40(%RDI)

0x531a12 JE	531aa0

0x531a18 MOV	-0x8(%R12),%R9

0x531a1d TEST	%R9,%R9

0x531a20 JE	531aa0

0x531a22 VMOVDQU	0x50(%R9),%XMM0

0x531a28 VMOVDQU	%XMM0,0x50(%R13)

0x531a2e MOVSXD	0x60(%R9),%R10

0x531a32 MOV	%R10D,0x60(%R13)

0x531a36 MOV	%R10,%R11

0x531a39 MOV	%R8B,0x50(%R13,%R10,1)

0x531a3e CMP	$0xe,%R10D

0x531a42 JG	531a90

0x531a44 INC	%R11D

0x531a47 MOV	%R11D,0x60(%R13)

0x531a4b MOV	%R13,%RSI

0x531a4e CALL	538bf0 <_ZN11qmcplusplus12TimerManagerINS_9TimerTypeINSt6chrono3_V212system_clockEEEE10push_timerEPS5_>

0x531a53 CALL	404650 <_ZNSt6chrono3_V212system_clock3nowEv@plt>

0x531a58 MOV	%RAX,(%R13)

0x531a5c POP	%RBX

0x531a5d POP	%R12

0x531a5f POP	%R13

0x531a61 POP	%R14

0x531a63 POP	%RBP

0x531a64 RET

0x531a65 NOPW	%CS:(%RAX,%RAX,1)

0x531a70 MOV	%R12D,%EDI

0x531a73 MOV	%R14D,%R12D

0x531a76 CALL	4045f0 <omp_get_ancestor_thread_num@plt>

0x531a7b TEST	%EAX,%EAX

0x531a7d SETE	%DL

0x531a80 AND	%EDX,%EBX

0x531a82 JMP	5318e2

0x531a87 NOPW	(%RAX,%RAX,1)

0x531a90 MOVB	$0x1,0xaed69(%RIP)

0x531a97 JMP	531a4b

0x531a99 NOPL	(%RAX)

0x531aa0 MOVQ	$0,0x50(%R13)

0x531aa8 MOVQ	$0,0x58(%R13)

0x531ab0 MOV	%R8B,0x50(%R13)

0x531ab4 MOVL	$0x1,0x60(%R13)

0x531abc JMP	531a4b

0x531abe XCHG	%AX,%AX

Coverage (%)	Name	Source Location	Module
►12.75+	qmcplusplus::SoaDistanceTableA[...]	stl_vector.h:1128	exec
○	qmcplusplus::ParticleSet::acce[...]	ParticleSet.cpp:389	exec
○	main._omp_fn.1	miniqmc.cpp:429	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►11.74+	qmcplusplus::ParticleSet::upda[...]	unique_ptr.h:463	exec
○	main._omp_fn.1	NonLocalPP.hpp:135	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►11.16+	qmcplusplus::SoaDistanceTableA[...]	SoaDistanceTableABOMPTarget.h:190	exec
○	qmcplusplus::ParticleSet::upda[...]	ParticleSet.cpp:242	exec
○	main._omp_fn.1	NonLocalPP.hpp:135	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►8.31+	qmcplusplus::WaveFunction::eva[...]	stl_vector.h:1128	exec
○	main._omp_fn.1	NonLocalPP.hpp:126	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►6.96+	main._omp_fn.1	miniqmc.cpp:433	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►5.96+	qmcplusplus::WaveFunction::eva[...]	stl_vector.h:1128	exec
○	main._omp_fn.1	stl_vector.h:1128	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►3.86+	qmcplusplus::ParticleSet::acce[...]	unique_ptr.h:193	exec
○	main._omp_fn.1	miniqmc.cpp:429	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►3.44+	main._omp_fn.1	TinyVector.h:61	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►3.02+	qmcplusplus::WaveFunction::acc[...]	stl_vector.h:1128	exec
○	main._omp_fn.1	refwrap.h:350	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►2.77+	qmcplusplus::SoaDistanceTableA[...]	NewTimer.h:242	exec
○	qmcplusplus::ParticleSet::make[...]	ParticleSet.cpp:343	exec
○	main._omp_fn.1	refwrap.h:350	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►2.68+	qmcplusplus::WaveFunction::rat[...]	WaveFunction.cpp:201	exec
○	main._omp_fn.1	stl_vector.h:1131	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►2.35+	miniqmcreference::DiracDetermi[...]	DiracDeterminantRef.cpp:213	exec
○	qmcplusplus::WaveFunction::eva[...]	WaveFunction.cpp:266	exec
○	main._omp_fn.1	NonLocalPP.hpp:126	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►2.01+	qmcplusplus::SoaDistanceTableA[...]	SoaDistanceTableABOMPTarget.h:214	exec
○	qmcplusplus::ParticleSet::upda[...]	ParticleSet.cpp:242	exec
○	main._omp_fn.1	NonLocalPP.hpp:135	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.85+	main._omp_fn.1	miniqmc.cpp:450	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.85+	qmcplusplus::SoaDistanceTableA[...]	stl_vector.h:1131	exec
○	qmcplusplus::ParticleSet::acce[...]	ParticleSet.cpp:389	exec
○	main._omp_fn.1	miniqmc.cpp:429	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.68+	miniqmcreference::einspline_sp[...]	NewTimer.h:242	exec
○	miniqmcreference::DiracDetermi[...]	OhmmsVector.h:178	exec
○	qmcplusplus::WaveFunction::eva[...]	WaveFunction.cpp:266	exec
○	main._omp_fn.1	NonLocalPP.hpp:126	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.59+	miniqmcreference::DiracDetermi[...]	DiracDeterminantRef.cpp:213	exec
○	qmcplusplus::WaveFunction::eva[...]	allocator.h:161	exec
○	main._omp_fn.1	NonLocalPP.hpp:126	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.43+	qmcplusplus::ParticleSet::make[...]	stl_vector.h:993	exec
○	main._omp_fn.1	refwrap.h:350	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.43+	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:1131	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.43+	qmcplusplus::SoaDistanceTableA[...]	unique_ptr.h:193	exec
○	qmcplusplus::ParticleSet::make[...]	ParticleSet.cpp:343	exec
○	main._omp_fn.1	refwrap.h:350	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.09+	miniqmcreference::DiracDetermi[...]	unique_ptr.h:193	exec
○	qmcplusplus::WaveFunction::rat[...]	WaveFunction.cpp:196	exec
○	main._omp_fn.1	stl_vector.h:1131	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►1.01+	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:1131	exec
○	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	__GI___clone3		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 0.01% of application time for run gcc_3

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

The function is defined in:

/home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/TimerManager.h:92-93
/home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:37-39,53-75,81
/home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.h:90-99
/cluster/comp/gcc/14.2.0/include/c++/14.2.0/bits/stl_vector.h:993

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Code clean check

Detected a slowdown caused by scalar integer instructions (typically used for address computation). By removing them, you can lower the cost of an iteration from 16.00 to 5.00 cycles (3.20x speedup).

Workaround

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

Vectorization

Your function is not vectorized. Only 7% of vector register length is used (average across all SSE/AVX instructions). By fully vectorizing your function, you can lower the cost of an iteration from 16.00 to 0.53 cycles (30.05x speedup).

Details

5% of SSE/AVX instructions are used in vector version (process two or more data elements in vector registers):

25% of SSE/AVX loads are used in vector version.
12% of SSE/AVX stores are used in vector version.
0% of SSE/AVX addition or subtraction instructions are used in vector version.
0% of SSE/AVX instructions that are not load, store, addition, subtraction nor multiply instructions are used in vector version.

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

Workaround

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

Execution units bottlenecks

Found no such bottlenecks but see expert reports for more complex bottlenecks.

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.

omp_get_ancestor_thread_num@plt: 7 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
omp_get_level@plt: 1 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:53
qmcplusplus::TimerManager
>::push_timer(qmcplusplus::TimerType
*): 1 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:73
std::chrono::_V2::system_clock::now(): 1 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:75

Conversion instructions

Detected expensive conversion instructions.

Details

MOVZX: 2 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:39
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:65

Workaround

Avoid mixing data with different types. In particular, check if the type of constants is the same as array elements.

Type of elements and instruction set

No instructions are processing arithmetic or math operations on FP elements. This function is probably writing/copying data or processing integer elements.

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 54 bytes. The binary function is storing 55 bytes.

General properties

nb instructions	123
nb uops	128
loop length	424
used x86 registers	15
used mmx registers	0
used xmm registers	1
used ymm registers	0
used zmm registers	0
nb stack references	0

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	16.00 cycles
front end	16.00 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15
uops	12.67	12.67	12.67	12.67	12.67	12.67	7.00	7.00	7.00	7.00	0.00	0.00	0.00	0.00	0.50	0.50
cycles	12.67	12.67	12.67	12.67	12.67	12.67	7.00	7.00	7.00	7.00	0.00	0.00	0.00	0.00	0.50	0.50

Execution ports to units layout:

P0: ALU
P1: ALU
P2: ALU
P3: ALU, BRU
P4: ALU, BRU
P5: ALU, BRU
P6 (512 bits): store address, load
P7 (512 bits): store address, load
P8 (512 bits): store address, load
P9 (512 bits): store address, load
P10 (512 bits): VPU, DIV/SQRT
P11 (512 bits): VPU, DIV/SQRT
P12 (512 bits): VPU
P13 (512 bits): VPU
P14 (512 bits): FP store data
P15 (512 bits): FP store data

Cycles executing div or sqrt instructions

Cycles summary

Front-end	16.00
Dispatch	12.67
Overall L1	16.00

Vectorization ratios

all	5%
load	25%
store	12%
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	7%
load	10%
store	8%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	6%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	7%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 16.00 cycles. At this rate:

1% of peak load performance is reached (3.38 out of 256.00 bytes loaded per cycle (GB/s @ 1GHz))
2% of peak store performance is reached (3.44 out of 128.00 bytes stored per cycle (GB/s @ 1GHz))

Front-end bottlenecks

Performance is limited by instruction throughput (loading/decoding program instructions to execution core) (front-end is a bottleneck). By removing all these bottlenecks, you can lower the cost of an iteration from 16.00 to 12.67 cycles (1.26x speedup).

ASM code

In the binary file, the address of the function is: 531880

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P14	P15	Latency	Recip. throughput	Vectorization
PUSH %RBP	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MOV %RSP,%RBP	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	scal (12.5%)
PUSH %R14	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %R13	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %R12	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %RBX	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MOVZX 0x38(%RDI),%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0.25	0.25	0.25	0.25	0	0	1	0.25	scal (1.6%)
TEST %BL,%BL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
JNE 5318a0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x20>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
POP %RBX	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R12	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R13	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R14	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %RBP	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
RET	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50	N/A
NOPL (%RAX)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
MOV %RDI,%R13	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 404780 <omp_get_level@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
MOV %EAX,%R12D	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JLE 5319fc <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x17c>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
LEA -0x1(%RAX),%R14D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.25	N/A
AND $0x7,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
JE 53195c <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xdc>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x1,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 531942 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xc2>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x2,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 53192e <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xae>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x3,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 53191a <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x9a>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x4,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 531907 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x87>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x5,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 5318f4 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x74>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x6,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JNE 531a70 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1f0>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %CL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %ECX,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %SIL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %ESI,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %DIL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %EDI,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %R8B	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %R8D,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %R9B	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %R9D,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %R10B	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %R10D,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
JE 5319f4 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x174>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
TEST %BL,%BL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
JE 531893 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x13>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
MOV 0x48(%R13),%RDI	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	3	0.25	N/A
TEST %RDI,%RDI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (12.5%)
JE 531a53 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1d3>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
MOV 0x48(%RDI),%R12	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	3	0.25	N/A
MOVZX 0x40(%R13),%R8D	1	0.17	0.17	0.17	0.17	0.17	0.17	0.25	0.25	0.25	0.25	0	0	1	0.25	scal (1.6%)
CMP %R12,0x40(%RDI)	1	0.17	0.17	0.17	0.17	0.17	0.17	0.25	0.25	0.25	0.25	0	0	1	0.25	scal (12.5%)
JE 531aa0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x220>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
MOV -0x8(%R12),%R9	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	3	0.25	N/A
TEST %R9,%R9	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (12.5%)
JE 531aa0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x220>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
VMOVDQU 0x50(%R9),%XMM0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	3	0.50	vect (25.0%)
VMOVDQU %XMM0,0x50(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	4	0.50	vect (25.0%)
MOVSXD 0x60(%R9),%R10	1	0.17	0.17	0.17	0.17	0.17	0.17	0.25	0.25	0.25	0.25	0	0	1	0.25	N/A
MOV %R10D,0x60(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
MOV %R10,%R11	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	scal (12.5%)
MOV %R8B,0x50(%R13,%R10,1)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	N/A
CMP $0xe,%R10D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JG 531a90 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x210>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
INC %R11D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R11D,0x60(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
MOV %R13,%RSI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	scal (12.5%)
CALL 538bf0 <_ZN11qmcplusplus12TimerManagerINS_9TimerTypeINSt6chrono3_V212system_clockEEEE10push_timerEPS5_>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
CALL 404650 <_ZNSt6chrono3_V212system_clock3nowEv@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
MOV %RAX,(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (12.5%)
POP %RBX	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R12	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R13	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R14	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %RBP	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
RET	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50	N/A
NOPW %CS:(%RAX,%RAX,1)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
MOV %R14D,%R12D	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
SETE %DL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %EDX,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JMP 5318e2 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x62>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	0	1	N/A
NOPW (%RAX,%RAX,1)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
MOVB $0x1,0xaed69(%RIP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (1.6%)
JMP 531a4b <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1cb>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	0	1	N/A
NOPL (%RAX)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
MOVQ $0,0x50(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
MOVQ $0,0x58(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
MOV %R8B,0x50(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	N/A
MOVL $0x1,0x60(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
JMP 531a4b <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1cb>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	0	1	N/A
XCHG %AX,%AX	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A

The code analyzed by CQA in that panel excludes loops and represents 0.01% of application time for run gcc_3

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

The function is defined in:

/home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/TimerManager.h:92-93
/home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:37-39,53-75,81
/home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.h:90-99
/cluster/comp/gcc/14.2.0/include/c++/14.2.0/bits/stl_vector.h:993

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Code clean check

Detected a slowdown caused by scalar integer instructions (typically used for address computation). By removing them, you can lower the cost of an iteration from 16.00 to 5.00 cycles (3.20x speedup).

Workaround

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

Vectorization

Details

5% of SSE/AVX instructions are used in vector version (process two or more data elements in vector registers):

25% of SSE/AVX loads are used in vector version.
12% of SSE/AVX stores are used in vector version.
0% of SSE/AVX addition or subtraction instructions are used in vector version.
0% of SSE/AVX instructions that are not load, store, addition, subtraction nor multiply instructions are used in vector version.

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

Workaround

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

Execution units bottlenecks

Found no such bottlenecks but see expert reports for more complex bottlenecks.

No data for this section

CALL instructions

Detected function call instructions.

Details

omp_get_ancestor_thread_num@plt: 7 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:54
omp_get_level@plt: 1 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:53
qmcplusplus::TimerManager
>::push_timer(qmcplusplus::TimerType
*): 1 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:73
std::chrono::_V2::system_clock::now(): 1 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:75

Conversion instructions

Detected expensive conversion instructions.

Details

MOVZX: 2 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:39
- /home/eoseret/qaas_runs_ZEN5/173-938-0042/intel/miniqmc/build/miniqmc/src/Utilities/NewTimer.cpp:65

Workaround

Avoid mixing data with different types. In particular, check if the type of constants is the same as array elements.

Type of elements and instruction set

No instructions are processing arithmetic or math operations on FP elements. This function is probably writing/copying data or processing integer elements.

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 54 bytes. The binary function is storing 55 bytes.

General properties

nb instructions	123
nb uops	128
loop length	424
used x86 registers	15
used mmx registers	0
used xmm registers	1
used ymm registers	0
used zmm registers	0
nb stack references	0

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	16.00 cycles
front end	16.00 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15
uops	12.67	12.67	12.67	12.67	12.67	12.67	7.00	7.00	7.00	7.00	0.00	0.00	0.00	0.00	0.50	0.50
cycles	12.67	12.67	12.67	12.67	12.67	12.67	7.00	7.00	7.00	7.00	0.00	0.00	0.00	0.00	0.50	0.50

Execution ports to units layout:

P0: ALU
P1: ALU
P2: ALU
P3: ALU, BRU
P4: ALU, BRU
P5: ALU, BRU
P6 (512 bits): store address, load
P7 (512 bits): store address, load
P8 (512 bits): store address, load
P9 (512 bits): store address, load
P10 (512 bits): VPU, DIV/SQRT
P11 (512 bits): VPU, DIV/SQRT
P12 (512 bits): VPU
P13 (512 bits): VPU
P14 (512 bits): FP store data
P15 (512 bits): FP store data

Cycles executing div or sqrt instructions

Cycles summary

Front-end	16.00
Dispatch	12.67
Overall L1	16.00

Vectorization ratios

all	5%
load	25%
store	12%
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	7%
load	10%
store	8%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	6%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	7%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 16.00 cycles. At this rate:

1% of peak load performance is reached (3.38 out of 256.00 bytes loaded per cycle (GB/s @ 1GHz))
2% of peak store performance is reached (3.44 out of 128.00 bytes stored per cycle (GB/s @ 1GHz))

Front-end bottlenecks

ASM code

In the binary file, the address of the function is: 531880

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P14	P15	Latency	Recip. throughput	Vectorization
PUSH %RBP	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MOV %RSP,%RBP	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	scal (12.5%)
PUSH %R14	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %R13	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %R12	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %RBX	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MOVZX 0x38(%RDI),%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0.25	0.25	0.25	0.25	0	0	1	0.25	scal (1.6%)
TEST %BL,%BL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
JNE 5318a0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x20>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
POP %RBX	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R12	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R13	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R14	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %RBP	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
RET	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50	N/A
NOPL (%RAX)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
MOV %RDI,%R13	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 404780 <omp_get_level@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
MOV %EAX,%R12D	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JLE 5319fc <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x17c>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
LEA -0x1(%RAX),%R14D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.25	N/A
AND $0x7,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
JE 53195c <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xdc>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x1,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 531942 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xc2>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x2,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 53192e <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0xae>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x3,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 53191a <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x9a>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x4,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 531907 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x87>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x5,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JE 5318f4 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x74>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
CMP $0x6,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JNE 531a70 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1f0>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %CL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %ECX,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %SIL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %ESI,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %DIL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %EDI,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %R8B	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %R8D,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %R9B	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %R9D,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
SETE %R10B	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %R10D,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
DEC %R12D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
JE 5319f4 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x174>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
TEST %BL,%BL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
JE 531893 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x13>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
MOV 0x48(%R13),%RDI	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	3	0.25	N/A
TEST %RDI,%RDI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (12.5%)
JE 531a53 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1d3>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
MOV 0x48(%RDI),%R12	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	3	0.25	N/A
MOVZX 0x40(%R13),%R8D	1	0.17	0.17	0.17	0.17	0.17	0.17	0.25	0.25	0.25	0.25	0	0	1	0.25	scal (1.6%)
CMP %R12,0x40(%RDI)	1	0.17	0.17	0.17	0.17	0.17	0.17	0.25	0.25	0.25	0.25	0	0	1	0.25	scal (12.5%)
JE 531aa0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x220>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
MOV -0x8(%R12),%R9	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	3	0.25	N/A
TEST %R9,%R9	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (12.5%)
JE 531aa0 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x220>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
VMOVDQU 0x50(%R9),%XMM0	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	3	0.50	vect (25.0%)
VMOVDQU %XMM0,0x50(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	4	0.50	vect (25.0%)
MOVSXD 0x60(%R9),%R10	1	0.17	0.17	0.17	0.17	0.17	0.17	0.25	0.25	0.25	0.25	0	0	1	0.25	N/A
MOV %R10D,0x60(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
MOV %R10,%R11	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	scal (12.5%)
MOV %R8B,0x50(%R13,%R10,1)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	N/A
CMP $0xe,%R10D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JG 531a90 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x210>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50-1	N/A
INC %R11D	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
MOV %R11D,0x60(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
MOV %R13,%RSI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	scal (12.5%)
CALL 538bf0 <_ZN11qmcplusplus12TimerManagerINS_9TimerTypeINSt6chrono3_V212system_clockEEEE10push_timerEPS5_>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
CALL 404650 <_ZNSt6chrono3_V212system_clock3nowEv@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
MOV %RAX,(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (12.5%)
POP %RBX	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R12	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R13	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R14	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %RBP	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
RET	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	1	0.50	N/A
NOPW %CS:(%RAX,%RAX,1)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
MOV %R12D,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
MOV %R14D,%R12D	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
CALL 4045f0 <omp_get_ancestor_thread_num@plt>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0	0	0.50	N/A
TEST %EAX,%EAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
SETE %DL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	N/A
AND %EDX,%EBX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	1	0.17	scal (6.3%)
JMP 5318e2 <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x62>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	0	1	N/A
NOPW (%RAX,%RAX,1)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
MOVB $0x1,0xaed69(%RIP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (1.6%)
JMP 531a4b <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1cb>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	0	1	N/A
NOPL (%RAX)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
MOVQ $0,0x50(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
MOVQ $0,0x58(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
MOV %R8B,0x50(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	N/A
MOVL $0x1,0x60(%R13)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0	0	4	0.50	scal (6.3%)
JMP 531a4b <_ZN11qmcplusplus9TimerTypeINSt6chrono3_V212system_clockEE5startEv+0x1cb>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	0	0	1	N/A
XCHG %AX,%AX	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A

Name	Coverage (%)	Time (s)
▼qmcplusplus::TimerType::start()–	0.01	0.02
○Loop 2101 - NewTimer.cpp:53-54 - exec	0.00	0.00

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