Icestorm: SSUBW2 (vector, 2D) measurements

Code:

  ssubw2 v0.2d, v0.2d, 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->2

Code:

  ssubw2 v0.2d, v0.2d, 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	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
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)
10025	20066	10029	21	10008	20	10034	70	509247	10020	20	10006	20	20008	11	10000	10
10024	20033	10021	21	10000	20	10000	70	509247	10020	20	10006	20	20008	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->3

Code:

  ssubw2 v0.2d, v1.2d, v0.4s

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	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
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

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	509247	10020	20	10006	20	20012	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:

  ssubw2 v0.2d, v8.2d, v9.4s
  ssubw2 v1.2d, v8.2d, v9.4s
  ssubw2 v2.2d, v8.2d, v9.4s
  ssubw2 v3.2d, v8.2d, v9.4s
  ssubw2 v4.2d, v8.2d, v9.4s
  ssubw2 v5.2d, v8.2d, v9.4s
  ssubw2 v6.2d, v8.2d, v9.4s
  ssubw2 v7.2d, v8.2d, v9.4s

Initialization

  movi v8.16b, 9
  movi v9.16b, 10

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.5004

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)
80204	40034	80107	101	80006	100	80010	300	320044	80110	200	80014	200	160028	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320044	80110	200	80013	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320036	80108	200	80012	200	160024	1	80000	100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5004

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)
80024	40087	80027	21	80006	0	20	80010	68	320052	80032	20	80018	20	160036	11	80000	10
80024	40034	80021	21	80000	0	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80025	40366	80250	21	80229	0	20	80237	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40040	80021	21	80000	0	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	0	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	0	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	0	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80025	40069	80063	21	80042	0	20	80054	65	320000	80020	20	80000	20	160382	11	80000	10
80024	40034	80021	21	80000	0	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80958	51758	81037	618	80041	378	625	80053	65	320048	80031	20	80017	20	160034	11	80000	10

SSUBW2 (vector, 2D)

Test 1: uops

1000 unrolls and 1 iteration

Test 2: Latency 1->2

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 3: Latency 1->3

100 unrolls and 100 iterations

1000 unrolls and 10 iterations

Test 4: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations