Icestorm: XAR measurements

Code:

  xar v0.2d, v0.2d, v1.2d, #3

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:

  xar v0.2d, v0.2d, v1.2d, #3

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	10004	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	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	307	509580	10136	202	10048	200	20008	1	10000	100

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0342

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	20292	10081	21	10060	20	10180	70	509247	10020	20	10000	20	20656	11	10000	10
10024	20341	10093	21	10072	20	10216	65	511892	10200	20	10208	20	20582	11	10000	10
10024	20444	10119	23	10096	22	10288	81	512946	10276	24	10288	20	20494	11	10000	10
10024	20444	10117	21	10096	20	10288	70	509780	10056	20	10040	20	20660	11	10000	10
10024	20395	10105	21	10084	20	10252	68	511908	10200	20	10210	20	20580	11	10000	10
10024	20545	10141	21	10120	20	10360	73	512440	10238	22	10250	20	20408	11	10000	10
10024	20238	10069	21	10048	20	10144	68	512440	10236	20	10244	20	20490	11	10000	10
10024	20338	10095	23	10072	22	10200	66	512424	10236	20	10247	20	20574	11	10000	10
10024	20395	10105	21	10084	20	10252	67	512972	10272	20	10288	20	20416	11	10000	10
10024	20341	10095	23	10072	22	10216	72	512940	10274	22	10291	20	20324	11	10000	10

Test 3: Latency 1->3

Code:

  xar v0.2d, v1.2d, v0.2d, #3

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	300	509248	10100	200	10004	200	20008	1	10000	100
10205	20066	10109	101	10008	100	10034	300	509248	10100	200	10005	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	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	20092	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:

  xar v0.2d, v8.2d, v9.2d, #3
  xar v1.2d, v8.2d, v9.2d, #3
  xar v2.2d, v8.2d, v9.2d, #3
  xar v3.2d, v8.2d, v9.2d, #3
  xar v4.2d, v8.2d, v9.2d, #3
  xar v5.2d, v8.2d, v9.2d, #3
  xar v6.2d, v8.2d, v9.2d, #3
  xar v7.2d, v8.2d, v9.2d, #3

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	40063	80109	101	80008	100	80012	300	320044	80110	200	80013	200	160028	1	80000	100
80204	40034	80107	101	80006	100	80010	300	320036	80108	200	80012	200	160024	1	80000	100
80204	40034	80105	101	80004	100	80008	300	320044	80110	200	80014	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	320044	80110	200	80013	200	160026	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)	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	40169	80076	21	80055	20	80059	68	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160382	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10
80024	40034	80021	21	80000	20	80000	65	320000	80020	20	80000	20	160000	11	80000	10

XAR

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