OV - exec - Loop 498

  (500) 0x42d380 CMP	W11, W8

  (500) 0x42d384 ADD	W11, W11, #1

  (500) 0x42d388 B.EQ	42d44c

  (500) 0x42d38c ADD	W16, W12, W11

  (500) 0x42d390 CMP	W10, W9

  (500) 0x42d394 SUB	X1, XZR, X14

  (500) 0x42d398 ORR	P1.B, P0/Z, P0.B, P0.B

  (500) 0x42d39c ORR	W0, WZR, W9

  (500) 0x42d3a0 ORR	W17, WZR, W9

  (500) 0x42d3a4 AND	W18, W13, #0xfffffffe

  (500) 0x42d3a8 SBFM	X16, X16, #0, #31

  (500) 0x42d3ac SUB	X16, X16, X3

  (500) 0x42d3b0 MUL	X16, X16, X26

  (500) 0x42d3b4 B.GE	42d420

  (500) 0x42d3b8 HINT	#0

  (500) 0x42d3bc HINT	#0

    (499) 0x42d3c0 SUB	X0, X16, X24

    (499) 0x42d3c4 ADD	W1, W17, #1

    (499) 0x42d3c8 SUBS	W18, W18, #2

    (499) 0x42d3cc ADD	X2, X0, W17,SXTW

    (499) 0x42d3d0 ADD	X1, X0, W1,SXTW

    (499) 0x42d3d4 ADD	W17, W17, #2

    (499) 0x42d3d8 LDR	D0, [X27, X2,LSL #3]

    (499) 0x42d3dc LDR	D1, [X19, X2,LSL #3]

    (499) 0x42d3e0 STR	D0, [X28, X2,LSL #3]

    (499) 0x42d3e4 LDR	D0, [X27, X1,LSL #3]

    (499) 0x42d3e8 STR	D1, [X25, X2,LSL #3]

    (499) 0x42d3ec STR	D0, [X28, X1,LSL #3]

    (499) 0x42d3f0 LDR	D0, [X19, X1,LSL #3]

    (499) 0x42d3f4 STR	D0, [X25, X1,LSL #3]

    (499) 0x42d3f8 B.NE	42d3c0

  (500) 0x42d3fc TBZ	W13, #0, 42d380

  (500) 0x42d400 ADD	X16, X0, W17,SXTW

  (500) 0x42d404 LDR	D0, [X27, X16,LSL #3]

  (500) 0x42d408 STR	D0, [X28, X16,LSL #3]

  (500) 0x42d40c LDR	D0, [X19, X16,LSL #3]

  (500) 0x42d410 STR	D0, [X25, X16,LSL #3]

  (500) 0x42d414 B	42d380

0x42d420 SUB	X17, X16, X24

0x42d424 ADD	W1, W1, W14

0x42d428 ADD	X17, X17, W0,SXTW

0x42d42c ADD	W0, W0, W14

0x42d430 LD1D	{Z0.D}, P1/Z, [X27, X17,LSL #3]

0x42d434 ST1D	{Z0.D}, P1, [X28, X17,LSL #3]

0x42d438 LD1D	{Z0.D}, P1/Z, [X19, X17,LSL #3]

0x42d43c ST1D	{Z0.D}, P1, [X25, X17,LSL #3]

0x42d440 WHILELO	P1.D, W1, W15

0x42d444 B.MI	42d420

0x42d448 B	42d380

/home/eoseret/qaas/qaas_runs/178-231-1255/intel/CloverLeaf1.3-FC/build/CloverLeaf1.3-FC/CloverLeaf_ref/kernels/reset_field_kernel.f90: 48 - 53

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

48:     !$OMP DO

49:     DO k=y_min,y_max

50:     !$OMP SIMD

51:       DO j=x_min,x_max

52:         density0(j,k)=density1(j,k)

53:         energy0(j,k)=energy1(j,k)

Coverage (%)	Name	Source Location	Module
►98.44+	__kmp_invoke_microtask		libomp.so
○	__kmp_invoke_task_func		libomp.so
○	__kmp_launch_thread		libomp.so
○	__kmp_launch_worker(void*)		libomp.so
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►1.56+	__kmp_invoke_microtask		libomp.so
○	__kmp_invoke_task_func		libomp.so
○	__kmp_fork_call		libomp.so
○	__kmpc_fork_call		libomp.so
○	reset_field_kernel	reset_field_kernel.f90:70	exec
○	reset_field	reset_field.f90:41	exec
○	hydro	hydro.f90:66	exec
○	main	clover_leaf.f90:76	exec
○	__libc_start_call_main		libc.so.6
○	__libc_start_main		libc.so.6
○	_start		exec

min	med	avg	max

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

min	med	avg	max

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

Path /

Metric	Value
CQA speedup if no scalar integer	1.00
CQA speedup if FP arith vectorized	1.00
CQA speedup if fully vectorized	1.00
CQA speedup if no inter-iteration dependency	NA
CQA speedup if next bottleneck killed	1.45
Bottlenecks	P10, P11,
Function	_QMreset_field_kernel_modulePreset_field_kernel..omp_par
Source	reset_field_kernel.f90:50-53
Source loop unroll info	NA
Source loop unroll confidence level	NA
Unroll/vectorization loop type	NA
Unroll factor	NA
CQA cycles	2.00
CQA cycles if no scalar integer	2.00
CQA cycles if FP arith vectorized	2.00
CQA cycles if fully vectorized	2.00
Front-end cycles	1.38
P0 cycles	1.00
P1 cycles	1.00
P2 cycles	1.25
P3 cycles	1.25
P4 cycles	1.25
P5 cycles	1.25
P6 cycles	0.50
P7 cycles	0.50
P8 cycles	0.50
P9 cycles	0.50
P10 cycles	2.00
P11 cycles	2.00
P12 cycles	0.00
P13 cycles	0.00
P14 cycles	0.00
DIV/SQRT cycles	0.00
Inter-iter dependencies cycles	NA
FE+BE cycles (UFS)	NA
Stall cycles (UFS)	NA
Nb insns	11.00
Nb uops	11.00
Nb loads	NA
Nb stores	2.00
Nb stack references	0.00
FLOP/cycle	0.00
Nb FLOP add-sub	0.00
Nb FLOP mul	0.00
Nb FLOP fma	0.00
Nb FLOP div	0.00
Nb FLOP rcp	0.00
Nb FLOP sqrt	0.00
Nb FLOP rsqrt	0.00
Bytes/cycle	64.00
Bytes prefetched	0.00
Bytes loaded	64.00
Bytes stored	64.00
Stride 0	NA
Stride 1	NA
Stride n	NA
Stride unknown	NA
Stride indirect	NA
Vectorization ratio all	80.00
Vectorization ratio load	100.00
Vectorization ratio store	100.00
Vectorization ratio mul	NA
Vectorization ratio add_sub	0.00
Vectorization ratio fma	NA
Vectorization ratio div_sqrt	NA
Vectorization ratio other	NA
Vector-efficiency ratio all	82.50
Vector-efficiency ratio load	100.00
Vector-efficiency ratio store	100.00
Vector-efficiency ratio mul	NA
Vector-efficiency ratio add_sub	12.50
Vector-efficiency ratio fma	NA
Vector-efficiency ratio div_sqrt	NA
Vector-efficiency ratio other	NA

Metric	Value
CQA speedup if no scalar integer	1.00
CQA speedup if FP arith vectorized	1.00
CQA speedup if fully vectorized	1.00
CQA speedup if no inter-iteration dependency	NA
CQA speedup if next bottleneck killed	1.45
Bottlenecks	P10, P11,
Function	_QMreset_field_kernel_modulePreset_field_kernel..omp_par
Source	reset_field_kernel.f90:50-53
Source loop unroll info	NA
Source loop unroll confidence level	NA
Unroll/vectorization loop type	NA
Unroll factor	NA
CQA cycles	2.00
CQA cycles if no scalar integer	2.00
CQA cycles if FP arith vectorized	2.00
CQA cycles if fully vectorized	2.00
Front-end cycles	1.38
P0 cycles	1.00
P1 cycles	1.00
P2 cycles	1.25
P3 cycles	1.25
P4 cycles	1.25
P5 cycles	1.25
P6 cycles	0.50
P7 cycles	0.50
P8 cycles	0.50
P9 cycles	0.50
P10 cycles	2.00
P11 cycles	2.00
P12 cycles	0.00
P13 cycles	0.00
P14 cycles	0.00
DIV/SQRT cycles	0.00
Inter-iter dependencies cycles	NA
FE+BE cycles (UFS)	NA
Stall cycles (UFS)	NA
Nb insns	11.00
Nb uops	11.00
Nb loads	NA
Nb stores	2.00
Nb stack references	0.00
FLOP/cycle	0.00
Nb FLOP add-sub	0.00
Nb FLOP mul	0.00
Nb FLOP fma	0.00
Nb FLOP div	0.00
Nb FLOP rcp	0.00
Nb FLOP sqrt	0.00
Nb FLOP rsqrt	0.00
Bytes/cycle	64.00
Bytes prefetched	0.00
Bytes loaded	64.00
Bytes stored	64.00
Stride 0	NA
Stride 1	NA
Stride n	NA
Stride unknown	NA
Stride indirect	NA
Vectorization ratio all	80.00
Vectorization ratio load	100.00
Vectorization ratio store	100.00
Vectorization ratio mul	NA
Vectorization ratio add_sub	0.00
Vectorization ratio fma	NA
Vectorization ratio div_sqrt	NA
Vectorization ratio other	NA
Vector-efficiency ratio all	82.50
Vector-efficiency ratio load	100.00
Vector-efficiency ratio store	100.00
Vector-efficiency ratio mul	NA
Vector-efficiency ratio add_sub	12.50
Vector-efficiency ratio fma	NA
Vector-efficiency ratio div_sqrt	NA
Vector-efficiency ratio other	NA

Path /

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

Function	_QMreset_field_kernel_modulePreset_field_kernel..omp_par
Source file and lines	reset_field_kernel.f90:48-53
Module	exec

The loop is defined in /home/eoseret/qaas/qaas_runs/178-231-1255/intel/CloverLeaf1.3-FC/build/CloverLeaf1.3-FC/CloverLeaf_ref/kernels/reset_field_kernel.f90:48-53.

Analyzed code is defined in /home/eoseret/qaas/qaas_runs/178-231-1255/intel/CloverLeaf1.3-FC/build/CloverLeaf1.3-FC/CloverLeaf_ref/kernels/reset_field_kernel.f90:50-53.

Warnings:

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

gain
potential
hint
expert

Vectorization

Your loop is partially vectorized. 82% of vector register length is used (average across all VPU instructions).

Details

80% of VPU instructions are used in vector version (process two or more data elements in vector registers):

0% of VPU addition or subtraction instructions are used in vector version.

No data for this section

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

The binary loop does not contain any FP arithmetical operations. The binary loop is loading 64 bytes. The binary loop is storing 64 bytes.

General properties

nb instructions	11
nb uops	11
loop length	44
used w registers	4
used x registers	7
used b registers	0
used h registers	0
used s registers	0
used d registers	0
used q registers	0
used v registers	0
used z registers	1
nb stack references	0

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	1.38 cycles
front end	1.38 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	1.00	1.00	1.25	1.25	1.25	1.25	0.50	0.50	0.50	0.50	2.00	2.00	0.00	0.00	0.00
cycles	1.00	1.00	1.25	1.25	1.25	1.25	0.50	0.50	0.50	0.50	2.00	2.00	0.00	0.00	0.00

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

NA

Cycles summary

Front-end	1.38
Dispatch	2.00
Overall L1	2.00

Vectorization ratios

all	80%
load	100%
store	100%
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	NA (no other vectorizable/vectorized instructions)

Vector efficiency ratios

all	82%
load	100%
store	100%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	12%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	NA (no other vectorizable/vectorized instructions)

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each iteration of the binary loop takes 2.00 cycles. At this rate:

33% of peak load performance is reached (32.00 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
66% of peak store performance is reached (32.00 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 loop is: 42d420

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	Latency	Recip. throughput	Vectorization
SUB X17, X16, X24	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	1	0.25	N/A
ADD W1, W1, W14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	1	0.25	N/A
ADD X17, X17, W0,SXTW	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	2	0.50	N/A
ADD W0, W0, W14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	1	0.25	scal (12.5%)
LD1D {Z0.D}, P1/Z, [X27, X17,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	6	0.50	vect (100.0%)
ST1D {Z0.D}, P1, [X28, X17,LSL #3]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	2	0.50	vect (100.0%)
LD1D {Z0.D}, P1/Z, [X19, X17,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	6	0.50	vect (100.0%)
ST1D {Z0.D}, P1, [X25, X17,LSL #3]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	2	0.50	vect (100.0%)
WHILELO P1.D, W1, W15	1	0	0	0	0	1	0	0	0	0	0	0	0	3	2	N/A
B.MI 42d420 <_QMreset_field_kernel_modulePreset_field_kernel..omp_par+0x1c0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
B 42d380 <_QMreset_field_kernel_modulePreset_field_kernel..omp_par+0x120>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A

Function	_QMreset_field_kernel_modulePreset_field_kernel..omp_par
Source file and lines	reset_field_kernel.f90:48-53
Module	exec

The loop is defined in /home/eoseret/qaas/qaas_runs/178-231-1255/intel/CloverLeaf1.3-FC/build/CloverLeaf1.3-FC/CloverLeaf_ref/kernels/reset_field_kernel.f90:48-53.

Analyzed code is defined in /home/eoseret/qaas/qaas_runs/178-231-1255/intel/CloverLeaf1.3-FC/build/CloverLeaf1.3-FC/CloverLeaf_ref/kernels/reset_field_kernel.f90:50-53.

Warnings:

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

gain
potential
hint
expert

Vectorization

Your loop is partially vectorized. 82% of vector register length is used (average across all VPU instructions).

Details

80% of VPU instructions are used in vector version (process two or more data elements in vector registers):

0% of VPU addition or subtraction instructions are used in vector version.

No data for this section

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

The binary loop does not contain any FP arithmetical operations. The binary loop is loading 64 bytes. The binary loop is storing 64 bytes.

General properties

nb instructions	11
nb uops	11
loop length	44
used w registers	4
used x registers	7
used b registers	0
used h registers	0
used s registers	0
used d registers	0
used q registers	0
used v registers	0
used z registers	1
nb stack references	0

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	1.38 cycles
front end	1.38 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	1.00	1.00	1.25	1.25	1.25	1.25	0.50	0.50	0.50	0.50	2.00	2.00	0.00	0.00	0.00
cycles	1.00	1.00	1.25	1.25	1.25	1.25	0.50	0.50	0.50	0.50	2.00	2.00	0.00	0.00	0.00

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

NA

Cycles summary

Front-end	1.38
Dispatch	2.00
Overall L1	2.00

Vectorization ratios

all	80%
load	100%
store	100%
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	NA (no other vectorizable/vectorized instructions)

Vector efficiency ratios

all	82%
load	100%
store	100%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	12%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	NA (no other vectorizable/vectorized instructions)

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each iteration of the binary loop takes 2.00 cycles. At this rate:

33% of peak load performance is reached (32.00 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
66% of peak store performance is reached (32.00 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 loop is: 42d420

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	Latency	Recip. throughput	Vectorization
SUB X17, X16, X24	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	1	0.25	N/A
ADD W1, W1, W14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	1	0.25	N/A
ADD X17, X17, W0,SXTW	1	0	0	0	0	0.50	0.50	0	0	0	0	0	0	2	0.50	N/A
ADD W0, W0, W14	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	0	1	0.25	scal (12.5%)
LD1D {Z0.D}, P1/Z, [X27, X17,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	6	0.50	vect (100.0%)
ST1D {Z0.D}, P1, [X28, X17,LSL #3]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	2	0.50	vect (100.0%)
LD1D {Z0.D}, P1/Z, [X19, X17,LSL #3]	1	0	0	0	0	0	0	0	0	0	0	0.50	0.50	6	0.50	vect (100.0%)
ST1D {Z0.D}, P1, [X25, X17,LSL #3]	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	0.50	0.50	2	0.50	vect (100.0%)
WHILELO P1.D, W1, W15	1	0	0	0	0	1	0	0	0	0	0	0	0	3	2	N/A
B.MI 42d420 <_QMreset_field_kernel_modulePreset_field_kernel..omp_par+0x1c0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
B 42d380 <_QMreset_field_kernel_modulePreset_field_kernel..omp_par+0x120>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A

Report Configuration

Vectorization

Details

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Vector efficiency ratios

Cycles and memory resources usage

Front-end bottlenecks

ASM code

Vectorization

Details

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Vector efficiency ratios

Cycles and memory resources usage

Front-end bottlenecks

ASM code