Icestorm: XTN2 (4S) measurements

Code:

  xtn2 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	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000
1004	2033	1001	1	1000	1000	50248	1000	1000	2000	1	1000

Test 2: Latency 1->1

Code:

  xtn2 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): 2.0033

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	20033	10101	101	10000	100	10000	300	509248	10100	200	10006	200	20012	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	307	509580	10136	202	10048	200	20012	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20187	10137	101	10036	100	10108	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0033

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	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10

Test 3: Latency 1->2

Code:

  xtn2 v0.8h, v0.4s

Initialization

  movi v0.16b, 1

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0033

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	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10205	20066	10109	101	10008	100	10034	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100
10204	20033	10101	101	10000	100	10000	300	509248	10100	200	10004	200	20008	1	10000	100

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0033

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	20033	10021	21	10000	20	10000	70	509248	10020	20	10004	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509248	10020	20	10000	20	20000	11	10000	10

Test 4: throughput

Count: 8

Code:

  movi v0.16b, 0
  xtn2 v0.8h, v8.4s
  movi v1.16b, 0
  xtn2 v1.8h, v8.4s
  movi v2.16b, 0
  xtn2 v2.8h, v8.4s
  movi v3.16b, 0
  xtn2 v3.8h, v8.4s
  movi v4.16b, 0
  xtn2 v4.8h, v8.4s
  movi v5.16b, 0
  xtn2 v5.8h, v8.4s
  movi v6.16b, 0
  xtn2 v6.8h, v8.4s
  movi v7.16b, 0
  xtn2 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	40478	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160024	1	160000	100
160205	40153	80144	101	80043	100	80047	300	320052	80112	200	80012	200	160024	1	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	202	160092	2	160000	100
160204	40086	80109	101	80008	100	80012	300	320052	80112	200	80012	200	160096	1	160000	100
160204	40146	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
160205	40120	80143	101	80042	100	80046	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
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): 0.5052

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	43908	80019	11	80008	10	80012	30	320196	80058	20	80048	20	160026	1	160000	10
160024	41213	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40429	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40921	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40434	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40423	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160282	1	160000	10
160024	40415	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160072	1	160000	10
160024	40420	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10
160024	40386	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160050	1	160000	10
160024	40418	80011	11	80000	10	80000	30	320000	80010	20	80000	20	160000	1	160000	10

Test 5: throughput

Count: 16

Code:

  xtn2 v0.8h, v16.4s
  xtn2 v1.8h, v16.4s
  xtn2 v2.8h, v16.4s
  xtn2 v3.8h, v16.4s
  xtn2 v4.8h, v16.4s
  xtn2 v5.8h, v16.4s
  xtn2 v6.8h, v16.4s
  xtn2 v7.8h, v16.4s
  xtn2 v8.8h, v16.4s
  xtn2 v9.8h, v16.4s
  xtn2 v10.8h, v16.4s
  xtn2 v11.8h, v16.4s
  xtn2 v12.8h, v16.4s
  xtn2 v13.8h, v16.4s
  xtn2 v14.8h, v16.4s
  xtn2 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)	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	80076	160105	101	160004	100	160008	300	640036	160108	200	160012	200	320028	1	160000	100
160204	80034	160107	101	160006	100	160010	300	640036	160108	200	160012	200	320024	1	160000	100
160204	80034	160105	101	160004	100	160008	300	640036	160108	200	160012	200	320024	1	160000	100
160205	80068	160139	101	160038	100	160050	300	640044	160110	200	160014	200	320028	1	160000	100
160204	80034	160105	101	160004	100	160008	300	640036	160108	200	160012	200	320024	1	160000	100
160204	80034	160105	101	160004	100	160008	300	640036	160108	200	160012	200	320024	1	160000	100
160204	80034	160105	101	160004	100	160008	300	640036	160108	200	160012	200	320024	1	160000	100
160204	80034	160105	101	160004	100	160008	300	640036	160108	200	160012	200	320024	1	160000	100
160204	80034	160105	101	160004	100	160008	300	640036	160108	200	160012	200	320024	1	160000	100
160204	80034	160105	101	160004	100	160008	300	640036	160108	200	160012	200	320024	1	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)	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	80202	160017	11	160006	10	160010	30	640036	160018	20	160012	20	320024	1	160000	10
160024	80045	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80034	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80034	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320024	1	160000	10
160024	80034	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80034	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80034	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80034	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80034	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10
160024	80034	160011	11	160000	10	160000	30	640000	160010	20	160000	20	320000	1	160000	10

XTN2 (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