OV - exec - Loop 394

	Loop Id: 394	Module: exec	Source: BsplineFunctor.h:236-241	Coverage: 1.2%

0x41fcac LDR	D7, [X0]    [5]

0x41fcb0 FCMPE	D31, D7

0x41fcb4 B.LS	41fcc8

0x41fcb8 CMP	W24, W30

0x41fcbc B.EQ	41fcc8

0x41fcc0 STR	D7, [X4, X2,UXTW #3]    [3]

0x41fcc4 ADD	W2, W2, #1

0x41fcc8 LDR	D8, [X0, #8]    [5]

0x41fccc ADD	W1, W30, #1

0x41fcd0 ADD	X0, X0, #8

0x41fcd4 FCMPE	D31, D8

0x41fcd8 B.LS	41fcec

0x41fcdc CMP	W24, W1

0x41fce0 B.EQ	41fcec

0x41fce4 STR	D8, [X4, X2,UXTW #3]    [2]

0x41fce8 ADD	W2, W2, #1

0x41fcec LDR	D9, [X0, #8]    [4]

0x41fcf0 ADD	W3, W1, #1

0x41fcf4 FCMPE	D31, D9

0x41fcf8 B.LS	41fd0c

0x41fcfc CMP	W24, W3

0x41fd00 B.EQ	41fd0c

0x41fd04 STR	D9, [X4, X2,UXTW #3]    [1]

0x41fd08 ADD	W2, W2, #1

0x41fd0c LDR	D10, [X0, #16]    [4]

0x41fd10 ADD	W28, W1, #2

0x41fd14 FCMPE	D31, D10

0x41fd18 B.LS	41fd2c

0x41fd1c CMP	W24, W28

0x41fd20 B.EQ	41fd2c

0x41fd24 STR	D10, [X4, X2,UXTW #3]    [10]

0x41fd28 ADD	W2, W2, #1

0x41fd2c LDR	D11, [X0, #24]    [4]

0x41fd30 ADD	W5, W1, #3

0x41fd34 FCMPE	D31, D11

0x41fd38 B.LS	41fd4c

0x41fd3c CMP	W24, W5

0x41fd40 B.EQ	41fd4c

0x41fd44 STR	D11, [X4, X2,UXTW #3]    [9]

0x41fd48 ADD	W2, W2, #1

0x41fd4c LDR	D12, [X0, #32]    [4]

0x41fd50 ADD	W9, W1, #4

0x41fd54 FCMPE	D31, D12

0x41fd58 B.LS	41fd6c

0x41fd5c CMP	W24, W9

0x41fd60 B.EQ	41fd6c

0x41fd64 STR	D12, [X4, X2,UXTW #3]    [8]

0x41fd68 ADD	W2, W2, #1

0x41fd6c LDR	D13, [X0, #40]    [4]

0x41fd70 ADD	W10, W1, #5

0x41fd74 FCMPE	D31, D13

0x41fd78 B.LS	41fd8c

0x41fd7c CMP	W24, W10

0x41fd80 B.EQ	41fd8c

0x41fd84 STR	D13, [X4, X2,UXTW #3]    [7]

0x41fd88 ADD	W2, W2, #1

0x41fd8c LDR	D14, [X0, #48]    [4]

0x41fd90 ADD	W17, W1, #6

0x41fd94 FCMPE	D31, D14

0x41fd98 B.LS	41fdac

0x41fd9c CMP	W24, W17

0x41fda0 B.EQ	41fdac

0x41fda4 STR	D14, [X4, X2,UXTW #3]    [6]

0x41fda8 ADD	W2, W2, #1

0x41fdac ADD	W30, W1, #7

0x41fdb0 ADD	X0, X0, #56

0x41fdb4 CMP	W18, W30

0x41fdb8 B.NE	41fcac

/home/hbollore/qaas-runs/171-275-7410/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/BsplineFunctor.h: 236 - 241

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

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

237:   {

238:     real_type r = distArray[jat];

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

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

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

Coverage (%)	Name	Source Location	Module

Path /

Metric	Value
CQA speedup if no scalar integer	1.59
CQA speedup if FP arith vectorized	1.00
CQA speedup if fully vectorized	5.67
CQA speedup if no inter-iteration dependency	NA
CQA speedup if next bottleneck killed	1.06
Bottlenecks	micro-operation queue, P0, P1,
Function	miniqmcreference::TwoBodyJastrowRef >::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)
Source	BsplineFunctor.h:236-241
Source loop unroll info	not unrolled or unrolled with no peel/tail loop
Source loop unroll confidence level	max
Unroll/vectorization loop type	NA
Unroll factor	NA
CQA cycles	8.50
CQA cycles if no scalar integer	5.33
CQA cycles if FP arith vectorized	8.50
CQA cycles if fully vectorized	1.50
Front-end cycles	8.50
DIV/SQRT cycles	8.50
P0 cycles	8.50
P1 cycles	6.75
P2 cycles	6.75
P3 cycles	6.75
P4 cycles	6.75
P5 cycles	8.00
P6 cycles	8.00
P7 cycles	0.00
P8 cycles	0.00
P9 cycles	5.33
P10 cycles	5.33
P11 cycles	5.33
P12 cycles	0.00
P13 cycles	0.00
P14 cycles	0.00
Inter-iter dependencies cycles	NA
FE+BE cycles (UFS)	NA
Stall cycles (UFS)	NA
Nb insns	68.00
Nb uops	68.00
Nb loads	NA
Nb stores	8.00
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	15.06
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	0.00
Vectorization ratio load	0.00
Vectorization ratio store	0.00
Vectorization ratio mul	NA
Vectorization ratio add_sub	0.00
Vectorization ratio fma	NA
Vectorization ratio div_sqrt	NA
Vectorization ratio other	0.00
Vector-efficiency ratio all	18.95
Vector-efficiency ratio load	25.00
Vector-efficiency ratio store	25.00
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	12.50

Metric	Value
CQA speedup if no scalar integer	1.59
CQA speedup if FP arith vectorized	1.00
CQA speedup if fully vectorized	5.67
CQA speedup if no inter-iteration dependency	NA
CQA speedup if next bottleneck killed	1.06
Bottlenecks	micro-operation queue, P0, P1,
Function	miniqmcreference::TwoBodyJastrowRef >::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)
Source	BsplineFunctor.h:236-241
Source loop unroll info	not unrolled or unrolled with no peel/tail loop
Source loop unroll confidence level	max
Unroll/vectorization loop type	NA
Unroll factor	NA
CQA cycles	8.50
CQA cycles if no scalar integer	5.33
CQA cycles if FP arith vectorized	8.50
CQA cycles if fully vectorized	1.50
Front-end cycles	8.50
DIV/SQRT cycles	8.50
P0 cycles	8.50
P1 cycles	6.75
P2 cycles	6.75
P3 cycles	6.75
P4 cycles	6.75
P5 cycles	8.00
P6 cycles	8.00
P7 cycles	0.00
P8 cycles	0.00
P9 cycles	5.33
P10 cycles	5.33
P11 cycles	5.33
P12 cycles	0.00
P13 cycles	0.00
P14 cycles	0.00
Inter-iter dependencies cycles	NA
FE+BE cycles (UFS)	NA
Stall cycles (UFS)	NA
Nb insns	68.00
Nb uops	68.00
Nb loads	NA
Nb stores	8.00
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	15.06
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	0.00
Vectorization ratio load	0.00
Vectorization ratio store	0.00
Vectorization ratio mul	NA
Vectorization ratio add_sub	0.00
Vectorization ratio fma	NA
Vectorization ratio div_sqrt	NA
Vectorization ratio other	0.00
Vector-efficiency ratio all	18.95
Vector-efficiency ratio load	25.00
Vector-efficiency ratio store	25.00
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	12.50

Path /

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

Function	miniqmcreference::TwoBodyJastrowRef >::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)
Source file and lines	BsplineFunctor.h:236-241
Module	exec

The loop is defined in /home/hbollore/qaas-runs/171-275-7410/intel/miniqmc/build/miniqmc/src/QMCWaveFunctions/Jastrow/BsplineFunctor.h:236-241.

The related source loop is not unrolled or unrolled with no peel/tail loop.
Warnings:

Ignoring paths for analysis
Too many paths. If you really need to analyze all of the 6561 paths individually, rerun with max-paths=6561
RecMII not computed since number of paths is unknown or > max_paths

Try to simplify control and/or increase the maximum number of paths per function/loop through the 'max-paths-nb' option.

This loop has 6561 execution paths.

The presence of multiple execution paths is typically the main/first bottleneck.
Try to simplify control inside loop: ideally, try to remove all conditional expressions, for example by (if applicable):

hoisting them (moving them outside the loop)
turning them into conditional moves, MIN or MAX

Ex: if (x<0) x=0 => x = (x<0 ? 0 : x) (or MAX(0,x) after defining the corresponding macro)

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 8.50 to 5.33 cycles (1.59x speedup).

Workaround

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

Vectorization

Your loop is not vectorized. Only 18% of vector register length is used (average across all VPU instructions). By vectorizing your loop, you can lower the cost of an iteration from 8.50 to 1.50 cycles (5.67x speedup).

Details

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

Workaround

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

No data for this section

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

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

General properties

nb instructions	68
loop length	272
nb stack references	0

Front-end

FIT IN UOP CACHE

front end

8.50 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	8.50	8.50	6.75	6.75	6.75	6.75	8.00	8.00	0.00	0.00	5.33	5.33	5.33	0.00	0.00
cycles	8.50	8.50	6.75	6.75	6.75	6.75	8.00	8.00	0.00	0.00	5.33	5.33	5.33	0.00	0.00

Execution ports to units layout:

P0:
P1:
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	8.50
Overall L1	8.50

Vectorization ratios

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

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each iteration of the binary loop takes 8.50 cycles. At this rate:

7% of peak load performance is reached (7.53 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
15% of peak store performance is reached (7.53 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

ASM code

In the binary file, the address of the loop is: 41fcac

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P10	P11	P12	Latency	Recip. throughput
LDR D7, [X0]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
FCMPE D31, D7	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fcc8 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x268>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W30	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fcc8 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x268>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D7, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D8, [X0, #8]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W1, W30, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
ADD X0, X0, #8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D8	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fcec <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x28c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fcec <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x28c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D8, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D9, [X0, #8]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W3, W1, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D9	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd0c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2ac>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd0c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2ac>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D9, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D10, [X0, #16]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W28, W1, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D10	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd2c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2cc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W28	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd2c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2cc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D10, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D11, [X0, #24]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W5, W1, #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D11	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd4c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2ec>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W5	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd4c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2ec>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D11, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D12, [X0, #32]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W9, W1, #4	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D12	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd6c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x30c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W9	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd6c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x30c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D12, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D13, [X0, #40]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W10, W1, #5	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D13	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd8c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x32c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W10	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd8c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x32c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D13, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D14, [X0, #48]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W17, W1, #6	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D14	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fdac <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x34c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W17	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fdac <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x34c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D14, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
ADD W30, W1, #7	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
ADD X0, X0, #56	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
CMP W18, W30	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.NE 41fcac <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x24c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50

Function	miniqmcreference::TwoBodyJastrowRef >::evaluateRatios(qmcplusplus::VirtualParticleSet&, std::vector >&)
Source file and lines	BsplineFunctor.h:236-241
Module	exec

Ignoring paths for analysis
Too many paths. If you really need to analyze all of the 6561 paths individually, rerun with max-paths=6561
RecMII not computed since number of paths is unknown or > max_paths

hoisting them (moving them outside the loop)
turning them into conditional moves, MIN or MAX

Ex: if (x<0) x=0 => x = (x<0 ? 0 : x) (or MAX(0,x) after defining the corresponding macro)

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 8.50 to 5.33 cycles (1.59x speedup).

Workaround

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

Vectorization

Details

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

Workaround

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

No data for this section

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

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

General properties

nb instructions	68
loop length	272
nb stack references	0

Front-end

FIT IN UOP CACHE

front end

8.50 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14
uops	8.50	8.50	6.75	6.75	6.75	6.75	8.00	8.00	0.00	0.00	5.33	5.33	5.33	0.00	0.00
cycles	8.50	8.50	6.75	6.75	6.75	6.75	8.00	8.00	0.00	0.00	5.33	5.33	5.33	0.00	0.00

Execution ports to units layout:

P0:
P1:
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	8.50
Overall L1	8.50

Vectorization ratios

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

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each iteration of the binary loop takes 8.50 cycles. At this rate:

7% of peak load performance is reached (7.53 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
15% of peak store performance is reached (7.53 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

ASM code

In the binary file, the address of the loop is: 41fcac

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P10	P11	P12	Latency	Recip. throughput
LDR D7, [X0]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
FCMPE D31, D7	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fcc8 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x268>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W30	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fcc8 <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x268>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D7, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D8, [X0, #8]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W1, W30, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
ADD X0, X0, #8	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D8	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fcec <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x28c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fcec <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x28c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D8, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D9, [X0, #8]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W3, W1, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D9	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd0c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2ac>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd0c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2ac>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D9, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D10, [X0, #16]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W28, W1, #2	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D10	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd2c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2cc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W28	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd2c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2cc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D10, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D11, [X0, #24]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W5, W1, #3	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D11	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd4c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2ec>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W5	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd4c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x2ec>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D11, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D12, [X0, #32]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W9, W1, #4	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D12	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd6c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x30c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W9	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd6c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x30c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D12, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D13, [X0, #40]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W10, W1, #5	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D13	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fd8c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x32c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W10	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fd8c <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x32c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D13, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
LDR D14, [X0, #48]	1	0	0	0	0	0	0	0	0	0.33	0.33	0.33	6	0.33
ADD W17, W1, #6	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
FCMPE D31, D14	1	0	0	0	0	0	0	1	0	0	0	0	2	1
B.LS 41fdac <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x34c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
CMP W24, W17	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.EQ 41fdac <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x34c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50
STR D14, [X4, X2,UXTW #3]	1	0	0	0	0	0	0	0.50	0.50	0.50	0.50	0	2	0.50
ADD W2, W2, #1	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
ADD W30, W1, #7	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
ADD X0, X0, #56	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.25
CMP W18, W30	1	0	0	0.25	0.25	0.25	0.25	0	0	0	0	0	1	0.33
B.NE 41fcac <_ZN16miniqmcreference17TwoBodyJastrowRefIN11qmcplusplus14BsplineFunctorIdEEE14evaluateRatiosERNS1_18VirtualParticleSetERSt6vectorIdSaIdEE+0x24c>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	1	0.50

Report Configuration

Code clean check

Workaround

Vectorization

Details

Workaround

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Cycles and memory resources usage

ASM code

Code clean check

Workaround

Vectorization

Details

Workaround

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Cycles and memory resources usage

ASM code