OV - exec - Function hypre_IJMatrixAssembleParCSR._omp

	Function: hypre_IJMatrixAssembleParCSR._omp_fn.1	Module: exec	Source: IJMatrix_parcsr.c:2798-2812	Coverage (incl. loops): 0.74% \| (excl. loops): 0.00%

/home/hbollore/qaas/qaas-runs/174-161-6712/intel/AMG/build/AMG/AMG/IJ_mv/IJMatrix_parcsr.c: 2798 - 2812

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

2798: #pragma omp parallel for private (i,j,j0,temp)

2799: #endif

2800:          for (i=0; i < num_rows; i++)

2801:          {

2802:    	    j0 = diag_i[i];

2803:    	    for (j=j0; j < diag_i[i+1]; j++)

2804:    	    {

2805:    	       diag_j[j] -= col_0;

2806:    	       if (diag_j[j] == i)

2807:    	       {

2808:    	          temp = diag_data[j0];

2809:    	          diag_data[j0] = diag_data[j];

2810:    	          diag_data[j] = temp;

2811:    	          diag_j[j] = diag_j[j0];

2812:    	          diag_j[j0] = i;

0x51dbc0 STP	X29, X30, [SP, #976]!

0x51dbc4 ADD	X29, SP, #0

0x51dbc8 STP	X19, X20, [SP, #16]

0x51dbcc ORR	X20, XZR, X0

0x51dbd0 STR	X21, [SP, #32]

0x51dbd4 LDR	X21, [X0, #24]

0x51dbd8 BL	410930

0x51dbdc SBFM	X19, X0, #0, #31

0x51dbe0 BL	410940

0x51dbe4 SBFM	X2, X0, #0, #31

0x51dbe8 SDIV	X9, X21, X19

0x51dbec MSUB	X1, X9, X19, X21

0x51dbf0 CMP	X2, X1

0x51dbf4 B.LT	51dcbc

0x51dbf8 MADD	X18, X9, X2, X1

0x51dbfc ADD	X11, X9, X18

0x51dc00 CMP	X18, X11

0x51dc04 B.GE	51dc70

0x51dc08 LDP	X10, X3, [X20]

0x51dc0c LDR	X6, [X20, #16]

0x51dc10 ADD	X4, X10, #8

0x51dc14 LDR	X5, [X20, #32]

0x51dc18 HINT	#0

0x51dc1c HINT	#0

      (3561) 0x51dc20 LDR	X0, [X10, X18,LSL #3]

      (3561) 0x51dc24 LDR	X12, [X4, X18,LSL #3]

      (3561) 0x51dc28 ADD	X8, X6, X0,LSL #3

      (3561) 0x51dc2c ADD	X7, X3, X0,LSL #3

      (3561) 0x51dc30 CMP	X0, X12

      (3561) 0x51dc34 B.GE	51dc64

    (3560) 0x51dc38 HINT	#0

    (3560) 0x51dc3c HINT	#0

    (3560) 0x51dc40 LDR	X13, [X3, X0,LSL #3]

    (3560) 0x51dc44 SUB	X14, X13, X5

    (3560) 0x51dc48 STR	X14, [X3, X0,LSL #3]

    (3560) 0x51dc4c CMP	X18, X14

    (3560) 0x51dc50 B.EQ	51dc80

    (3560) 0x51dc54 LDR	X15, [X4, X18,LSL #3]

    (3560) 0x51dc58 ADD	X0, X0, #1

    (3560) 0x51dc5c CMP	X15, X0

    (3560) 0x51dc60 B.GT	51dc40

      (3561) 0x51dc64 ADD	X18, X18, #1

      (3561) 0x51dc68 CMP	X11, X18

      (3561) 0x51dc6c B.NE	51dc20

(3562) 0x51dc70 LDR	X21, [SP, #32]

(3562) 0x51dc74 LDP	X19, X20, [SP, #16]

(3562) 0x51dc78 LDP	X29, X30, [SP], #48

(3562) 0x51dc7c RET

  (3559) 0x51dc80 LDR	D30, [X6, X0,LSL #3]

  (3559) 0x51dc84 LDR	D31, [X8]

  (3559) 0x51dc88 LDR	X16, [X7]

  (3559) 0x51dc8c STR	D30, [X8]

  (3559) 0x51dc90 STR	D31, [X6, X0,LSL #3]

  (3559) 0x51dc94 STR	X16, [X3, X0,LSL #3]

  (3559) 0x51dc98 ADD	X0, X0, #1

  (3559) 0x51dc9c STR	X18, [X7]

  (3559) 0x51dca0 LDR	X17, [X4, X18,LSL #3]

  (3559) 0x51dca4 CMP	X17, X0

  (3559) 0x51dca8 B.GT	51dc40

  (3559) 0x51dcac ADD	X18, X18, #1

  (3559) 0x51dcb0 CMP	X11, X18

  (3559) 0x51dcb4 B.NE	51dc20

(3562) 0x51dcb8 B	51dc70

0x51dcbc ADD	X9, X9, #1

0x51dcc0 MOVZ	X1, #0

0x51dcc4 B	51dbf8

Coverage (%)	Name	Source Location	Module
►98.98+	gomp_thread_start	team.c:130	libgomp.so.1.0.0
○	start_thread		libc.so.6
○	thread_start		libc.so.6
►1.02+	GOMP_parallel	libgomp.h:980	libgomp.so.1.0.0
○	hypre_IJMatrixAssembleParCSR	IJMatrix_parcsr.c:2798	exec
○	BuildIJLaplacian27pt	amg.c:2272	exec
○	main	amg.c:274	exec
○	__libc_start_call_main		libc.so.6
○	__libc_start_main		libc.so.6
○	_start	amg.c:253	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 /

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 0.00% of application time for run gcc_2

Source file and lines	IJMatrix_parcsr.c:2798-2812
Module	exec

The function is defined in /home/hbollore/qaas/qaas-runs/174-161-6712/intel/AMG/build/AMG/AMG/IJ_mv/IJMatrix_parcsr.c:2798-2812.

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Vectorization

Your function is not vectorized. Only 64% of vector register length is used (average across all VPU instructions).

Details

All VPU instructions are used in scalar version (process only one data element in vector registers).

Expensive FP math instructions/calls

Detected performance impact from expensive FP math instructions/calls. By removing/reexpressing them, you can lower the cost of an iteration from 20.00 to 1.00 cycles (20.00x speedup).

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

The binary function does not contain any FP arithmetical operations. The binary function is loading 40 bytes. The binary function is storing 40 bytes.

General properties

nb instructions	27
loop length	108
nb stack references	0

Front-end

FIT IN UOP CACHE

front end

3.13 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16
uops	2.50	2.50	2.67	2.58	2.67	2.50	3.00	2.58	0.00	0.00	0.00	0.00	2.50	2.17	2.33	1.50	1.50
cycles	2.50	2.50	2.67	2.58	2.67	2.50	3.00	2.58	0.00	0.00	0.00	0.00	2.50	2.17	2.33	1.50	1.50

Execution ports to units layout:

P0: BRU
P1: BRU
P2: ALU
P3: ALU
P4: ALU
P5: ALU
P6: ALU
P7: ALU
P8 (128 bits): VPU, FP store data, ALU, DIV/SQRT
P9 (128 bits): VPU, ALU, FP store data
P10 (128 bits): VPU, ALU, DIV/SQRT
P11 (128 bits): ALU, VPU
P12 (256 bits): store address, load
P13 (256 bits): store address, load
P14 (256 bits): load
P15 (64 bits): store data
P16 (64 bits): store data

Cycles executing div or sqrt instructions

5.00-20.00

Cycles summary

Front-end	3.13
Overall L1	5.00-20.00

Vectorization ratios

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

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 20.00 cycles. At this rate:

2% of peak load performance is reached (2.00 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
4% of peak store performance is reached (2.00 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

ASM code

In the binary file, the address of the function is: 51dbc0

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16	Latency	Recip. throughput	Vectorization
STP X29, X30, [SP, #976]!	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
ADD X29, SP, #0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
STP X19, X20, [SP, #16]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
ORR X20, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
STR X21, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
LDR X21, [X0, #24]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (50.0%)
BL 410930 <@plt_start@+0x1b0>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
SBFM X19, X0, #0, #31	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (100.0%)
BL 410940 <@plt_start@+0x1c0>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
SBFM X2, X0, #0, #31	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (100.0%)
SDIV X9, X21, X19	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	5-20	5-20	N/A
MSUB X1, X9, X19, X21	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (50.0%)
CMP X2, X1	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.LT 51dcbc <hypre_IJMatrixAssembleParCSR._omp_fn.1+0xfc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MADD X18, X9, X2, X1	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (50.0%)
ADD X11, X9, X18	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
CMP X18, X11	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.GE 51dc70 <hypre_IJMatrixAssembleParCSR._omp_fn.1+0xb0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X10, X3, [X20]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.50	scal (100.0%)
LDR X6, [X20, #16]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (50.0%)
ADD X4, X10, #8	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
LDR X5, [X20, #32]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (50.0%)
HINT #0																					N/A
HINT #0																					N/A
ADD X9, X9, #1	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
MOVZ X1, #0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
B 51dbf8 <hypre_IJMatrixAssembleParCSR._omp_fn.1+0x38>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A

The code analyzed by CQA in that panel excludes loops and represents 0.00% of application time for run gcc_2

Source file and lines	IJMatrix_parcsr.c:2798-2812
Module	exec

The function is defined in /home/hbollore/qaas/qaas-runs/174-161-6712/intel/AMG/build/AMG/AMG/IJ_mv/IJMatrix_parcsr.c:2798-2812.

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Vectorization

Your function is not vectorized. Only 64% of vector register length is used (average across all VPU instructions).

Details

All VPU instructions are used in scalar version (process only one data element in vector registers).

Expensive FP math instructions/calls

Detected performance impact from expensive FP math instructions/calls. By removing/reexpressing them, you can lower the cost of an iteration from 20.00 to 1.00 cycles (20.00x speedup).

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

The binary function does not contain any FP arithmetical operations. The binary function is loading 40 bytes. The binary function is storing 40 bytes.

General properties

nb instructions	27
loop length	108
nb stack references	0

Front-end

FIT IN UOP CACHE

front end

3.13 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16
uops	2.50	2.50	2.67	2.58	2.67	2.50	3.00	2.58	0.00	0.00	0.00	0.00	2.50	2.17	2.33	1.50	1.50
cycles	2.50	2.50	2.67	2.58	2.67	2.50	3.00	2.58	0.00	0.00	0.00	0.00	2.50	2.17	2.33	1.50	1.50

Execution ports to units layout:

P0: BRU
P1: BRU
P2: ALU
P3: ALU
P4: ALU
P5: ALU
P6: ALU
P7: ALU
P8 (128 bits): VPU, FP store data, ALU, DIV/SQRT
P9 (128 bits): VPU, ALU, FP store data
P10 (128 bits): VPU, ALU, DIV/SQRT
P11 (128 bits): ALU, VPU
P12 (256 bits): store address, load
P13 (256 bits): store address, load
P14 (256 bits): load
P15 (64 bits): store data
P16 (64 bits): store data

Cycles executing div or sqrt instructions

5.00-20.00

Cycles summary

Front-end	3.13
Overall L1	5.00-20.00

Vectorization ratios

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

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 20.00 cycles. At this rate:

2% of peak load performance is reached (2.00 out of 96.00 bytes loaded per cycle (GB/s @ 1GHz))
4% of peak store performance is reached (2.00 out of 48.00 bytes stored per cycle (GB/s @ 1GHz))

ASM code

In the binary file, the address of the function is: 51dbc0

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16	Latency	Recip. throughput	Vectorization
STP X29, X30, [SP, #976]!	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
ADD X29, SP, #0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
STP X19, X20, [SP, #16]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (100.0%)
ORR X20, XZR, X0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
STR X21, [SP, #32]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.50	0.50	0	0.50	0.50	1	0.50	scal (50.0%)
LDR X21, [X0, #24]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (50.0%)
BL 410930 <@plt_start@+0x1b0>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
SBFM X19, X0, #0, #31	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (100.0%)
BL 410940 <@plt_start@+0x1c0>	1	0.50	0.50	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
SBFM X2, X0, #0, #31	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (100.0%)
SDIV X9, X21, X19	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	5-20	5-20	N/A
MSUB X1, X9, X19, X21	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (50.0%)
CMP X2, X1	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.LT 51dcbc <hypre_IJMatrixAssembleParCSR._omp_fn.1+0xfc>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MADD X18, X9, X2, X1	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	2	1	scal (50.0%)
ADD X11, X9, X18	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
CMP X18, X11	1	0	0	0.25	0.25	0	0	0.25	0.25	0	0	0	0	0	0	0	0	0	1	0.33	scal (50.0%)
B.GE 51dc70 <hypre_IJMatrixAssembleParCSR._omp_fn.1+0xb0>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
LDP X10, X3, [X20]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.50	scal (100.0%)
LDR X6, [X20, #16]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (50.0%)
ADD X4, X10, #8	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
LDR X5, [X20, #32]	1	0	0	0	0	0	0	0	0	0	0	0	0	0.33	0.33	0.33	0	0	4	0.33	scal (50.0%)
HINT #0																					N/A
HINT #0																					N/A
ADD X9, X9, #1	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	N/A
MOVZ X1, #0	1	0	0	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	0	0	0	0	0	1	0.17	scal (50.0%)
B 51dbf8 <hypre_IJMatrixAssembleParCSR._omp_fn.1+0x38>	1	0.50	0.50	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A

Name	Coverage (%)	Time (s)
▼hypre_IJMatrixAssembleParCSR._omp_fn.1–	0.74	0.12
▼Loop 3562 - IJMatrix_parcsr.c:2798-2812 - exec–	0.00	0.00
▼Loop 3559 - IJMatrix_parcsr.c:2802-2812 - exec–	0.17	0.02
▼Loop 3560 - IJMatrix_parcsr.c:2802-2811 - exec–	0.57	0.07
○Loop 3561 - IJMatrix_parcsr.c:2802-2811 - exec	0.01	0.01

Report Configuration

Vectorization

Details

Expensive FP math instructions/calls

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Cycles and memory resources usage

ASM code

Vectorization

Details

Expensive FP math instructions/calls

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

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Cycles and memory resources usage

ASM code