Icestorm: SQXTN2 (4S) measurements

Code:

  sqxtn2 v0.8h, v1.4s

Initialization

  movi v0.16b, 1
  movi v1.16b, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 0.001

Load/store unit issues: 0.000

SIMD/FP unit issues: 1.000

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	dispatch simd uop (57)	ldst uops in schedulers (5b)	dispatch uop (78)	map simd uop (7e)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000
1004	3033	1001	1	1000	1000	75905	1000	1000	2000	1	1000

Test 2: Latency 1->1

Code:

  sqxtn2 v0.8h, v1.4s

Initialization

  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0033

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	schedule ldst uop (55)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10006	200	20012	1	10000	100
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10682	33449	10580	404	10006	170	367	10031	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10004	200	20090	1	10000	100
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10004	200	20010	1	10000	100
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10006	200	20008	1	10000	100
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10004	200	20088	1	10000	100
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	0	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0033

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10006	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10

Test 3: Latency 1->2

Code:

  sqxtn2 v0.8h, v0.4s

Initialization

  movi v0.16b, 1

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0033

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100
10204	30033	10101	101	10000	100	10000	300	768905	10100	200	10004	200	20008	1	10000	100

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0033

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	77	769223	10053	22	10042	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10
10024	30033	10021	21	10000	20	10000	70	768905	10020	20	10000	20	20000	11	10000	10

Test 4: throughput

Count: 8

Code:

  movi v0.16b, 0
  sqxtn2 v0.8h, v8.4s
  movi v1.16b, 0
  sqxtn2 v1.8h, v8.4s
  movi v2.16b, 0
  sqxtn2 v2.8h, v8.4s
  movi v3.16b, 0
  sqxtn2 v3.8h, v8.4s
  movi v4.16b, 0
  sqxtn2 v4.8h, v8.4s
  movi v5.16b, 0
  sqxtn2 v5.8h, v8.4s
  movi v6.16b, 0
  sqxtn2 v6.8h, v8.4s
  movi v7.16b, 0
  sqxtn2 v7.8h, v8.4s

Initialization

  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.5011

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
160204	40542	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160026	1	160000	100
160204	40108	80110	101	80009	100	80013	300	320052	80112	200	80012	200	160026	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160026	1	160000	100
160204	40097	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160026	1	160000	100
160204	40107	80110	101	80009	100	80013	300	320052	80112	200	80012	200	160026	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320332	80182	200	80082	200	160026	1	160000	100
160204	40098	80110	101	80009	100	80013	300	320204	80150	200	80050	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5054

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
160024	43907	80020	11	80009	10	80013	30	320000	80010	20	80000	20	160000	1	160000	10
160024	41182	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160025	40523	80055	11	80044	10	80048	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40417	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40439	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40430	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40397	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40417	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40424	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40424	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10

Test 5: throughput

Count: 16

Code:

  sqxtn2 v0.8h, v16.4s
  sqxtn2 v1.8h, v16.4s
  sqxtn2 v2.8h, v16.4s
  sqxtn2 v3.8h, v16.4s
  sqxtn2 v4.8h, v16.4s
  sqxtn2 v5.8h, v16.4s
  sqxtn2 v6.8h, v16.4s
  sqxtn2 v7.8h, v16.4s
  sqxtn2 v8.8h, v16.4s
  sqxtn2 v9.8h, v16.4s
  sqxtn2 v10.8h, v16.4s
  sqxtn2 v11.8h, v16.4s
  sqxtn2 v12.8h, v16.4s
  sqxtn2 v13.8h, v16.4s
  sqxtn2 v14.8h, v16.4s
  sqxtn2 v15.8h, v16.4s

Initialization

  movi v16.16b, 17

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.5002

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	schedule ldst uop (55)	dispatch int uop (56)	dispatch simd uop (57)	dispatch ldst uop (58)	int uops in schedulers (59)	simd uops in schedulers (5a)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map ldst uop (7d)	map simd uop (7e)	map int uop inputs (7f)	map ldst uop inputs (80)	map simd uop inputs (81)	? int output thing (e9)	? ldst retires (ed)	? simd retires (ee)	? int retires (ef)
160204	80071	160105	101	160004	0	100	160008	0	300	0	640036	160108	200	0	160012	200	0	320024	1	0	160000	100
160204	80035	160107	101	160006	0	100	160010	0	300	0	640036	160108	200	0	160012	200	0	320024	1	0	160000	100
160204	80035	160107	101	160006	0	100	160010	0	300	0	640208	160154	200	0	160064	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	0	300	0	640036	160108	200	0	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	0	300	0	640036	160108	200	0	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	0	300	0	640044	160110	200	0	160014	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	0	300	0	640036	160108	200	0	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	0	300	0	640036	160108	200	0	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	0	300	0	640036	160108	200	0	160012	200	0	320024	1	0	160000	100
160204	80035	160105	101	160004	0	100	160008	0	300	0	640208	160154	200	0	160064	200	0	320024	1	0	160000	100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5002

Recorded non-zero counters (first 10 of 64 runs)

retire uop (01)	cycle (02)	schedule uop (52)	schedule int uop (53)	schedule simd uop (54)	schedule ldst uop (55)	dispatch int uop (56)	dispatch simd uop (57)	int uops in schedulers (59)	ldst uops in schedulers (5b)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	? int output thing (e9)	? simd retires (ee)	? int retires (ef)
160024	80131	160015	11	160004	0	10	160008	30	640044	160020	20	160014	20	320028	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320124	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80035	160011	11	160000	0	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10

SQXTN2 (4S)

Test 1: uops

1000 unrolls and 1 iteration

Test 2: Latency 1->1

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 3: Latency 1->2

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 4: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 5: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations