Firestorm: FRSQRTE (scalar, D) measurements

Code:

  frsqrte d0, d0

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: 0.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 1.000

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

retire uop (01)	cycle (02)	03	1e	3f	4e	51	schedule uop (52)	schedule simd uop (54)	dispatch simd uop (57)	ldst uops in schedulers (5b)	60	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map simd uop (7e)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst simd alu (9a)	l1d cache writeback (a8)	ac	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? simd retires (ee)	f5	f6	f7	f8	fd
1004	3037	23	0	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	22	0	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	22	0	170	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	22	3	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	1	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	22	0	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	23	0	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	23	0	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	23	0	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	23	0	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038
1004	3037	23	0	61	1900	25	1000	1000	1000	104451	1	3018	3037	3037	2738	3	2895	1000	1000	1000	3037	3037	1	1	1001	1000	0	0	73	1	16	1	1	2919	1000	3038	3038	3038	3038	3038

Test 2: Latency 1->2

Code:

  frsqrte d0, d0

Initialization

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

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0037

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

retire uop (01)	cycle (02)	03	18	1e	3f	4e	51	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)	69	6b	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d cache writeback (a8)	ac	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	3	16	2	2	29919	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30038	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30085	30038	30038	30038	30038
10204	30037	225	0	0	61	19900	25	10100	100	10000	100	10000	500	1067451	30018	0	30037	30037	28588	3	28745	10100	200	10000	200	10000	30037	30037	1	1	10201	100	99	100	100	10000	100	0	0	710	2	16	2	2	29919	10000	100	30038	30038	30038	30038	30038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

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

retire uop (01)	cycle (02)	03	mmu table walk data (08)	09	l2 tlb miss instruction (0a)	l2 tlb miss data (0b)	18	19	1e	1f	3f	4e	51	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)	60	69	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d tlb access (a0)	l1d tlb miss (a1)	ld unit uop (a6)	st unit uop (a7)	l1d cache writeback (a8)	a9	ac	cf	d5	map dispatch bubble (d6)	dd	fetch restart (de)	e0	? int output thing (e9)	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
10024	30037	225	0	0	0	0	0	0	0	0	61	19900	25	10010	10	10000	10	10000	50	1067451	0	30018	30084	30037	28628	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	0	0	0	0	61	19900	25	10010	10	10000	10	10000	50	1067451	0	30018	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	0	0	0	0	61	19900	25	10010	10	10000	10	10000	50	1067451	0	30018	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	0	0	0	0	61	19900	25	10010	10	10000	10	10000	50	1067451	1	30018	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	0	0	12	0	66	19900	25	10010	10	10000	10	10000	50	1067451	1	30018	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	0	0	0	0	61	19900	25	10010	10	10000	10	10000	50	1067451	1	30054	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	224	0	0	0	0	0	0	0	0	61	19900	25	10010	10	10000	10	10000	50	1067451	1	30018	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	224	0	0	0	0	0	0	0	0	726	19900	25	10010	10	10000	10	10000	50	1067451	1	30018	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	0	0	0	0	61	19900	25	10010	10	10000	10	10000	50	1067451	1	30018	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	2	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038
10024	30037	225	0	0	0	0	0	0	0	0	61	19900	25	10010	10	10000	10	10000	50	1067451	1	30018	30037	30037	28610	3	28767	10010	20	10000	20	10000	30037	30037	1	1	10021	10	9	10	10	10000	10	0	0	0	0	0	0	0	640	2	16	2	2	29919	0	10000	10	30038	30038	30038	30038	30038

Test 3: throughput

Count: 8

Code:

  frsqrte d0, d8
  frsqrte d1, d8
  frsqrte d2, d8
  frsqrte d3, d8
  frsqrte d4, d8
  frsqrte d5, d8
  frsqrte d6, d8
  frsqrte d7, d8

Initialization

  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 1.0005

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

retire uop (01)	cycle (02)	03	mmu table walk data (08)	1e	1f	3f	51	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)	60	69	6b	6d	6e	map stall dispatch (70)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d cache writeback (a8)	ac	c2	branch cond mispred nonspec (c5)	branch mispred nonspec (cb)	cd	cf	map dispatch bubble (d6)	dd	e0	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
80204	80041	600	0	0	0	704	25	80100	100	80000	100	80000	500	640000	0	80020	0	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80238	80040	80040	80040	80040
80204	80039	600	0	0	0	39	25	80100	100	80000	100	80000	500	640000	1	80020	0	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80040
80204	80039	599	0	0	0	39	25	80100	100	80000	100	80000	500	640000	0	80020	0	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80040
80204	80039	600	0	0	0	39	25	80100	100	80000	100	80000	500	640000	0	80020	0	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80202	100	99	100	100	80000	100	2	3	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80040
80204	80039	600	0	0	0	81	25	80100	100	80000	100	80000	500	640000	0	80020	0	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80040
80204	80039	599	0	0	0	188	25	80100	100	80000	100	80000	500	640000	0	80020	0	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80090
80204	80039	599	1	0	0	39	25	80100	100	80000	100	80000	500	640000	0	80020	3	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80040
80204	80039	599	0	0	0	39	25	80100	100	80000	100	80000	500	640000	0	80020	0	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80040
80204	80039	600	0	0	0	39	25	80100	100	80000	100	80000	500	640000	0	80020	0	80039	80039	69971	6	69993	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80040
80204	80039	599	0	0	0	39	25	80100	100	80000	100	80000	500	640000	0	80020	0	80039	80039	69971	6	70027	80100	200	80008	200	80008	80039	80039	1	1	80201	100	99	100	100	80000	100	0	0	0	1	1	1	5117	16	0	80036	80000	100	80040	80040	80040	80040	80040

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 1.0005

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

retire uop (01)	cycle (02)	03	mmu table walk data (08)	19	1e	3f	51	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)	5f	60	69	6b	6d	6e	map stall dispatch (70)	simd prf full (72)	map rewind (75)	map stall (76)	dispatch uop (78)	map int uop (7c)	map simd uop (7e)	map int uop inputs (7f)	map simd uop inputs (81)	82	83	flush restart other nonspec (84)	85	inst all (8c)	inst branch (8d)	inst branch taken (90)	inst branch cond (94)	inst int alu (97)	inst simd alu (9a)	9f	l1d tlb access (a0)	st unit uop (a7)	l1d cache writeback (a8)	a9	ac	branch mispred nonspec (cb)	cf	d0	d2	l1i cache miss demand (d3)	d5	map dispatch bubble (d6)	d9	dd	fetch restart (de)	e0	eb	? simd retires (ee)	? int retires (ef)	f5	f6	f7	f8	fd
80024	80039	600	0	0	27	50	25	80010	10	80000	10	80000	50	640000	0	0	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	51	0	5020	0	0	0	4	16	0	7	6	80034	17	80000	10	80040	80040	80040	80040	80040
80024	80039	600	0	0	0	50	25	80010	10	80000	10	80000	50	640000	0	1	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	177	0	5020	0	0	0	4	16	0	4	3	80034	0	80000	10	80040	80040	80040	80040	80040
80024	80039	601	0	0	0	50	25	80010	10	80000	10	80000	50	640000	0	1	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	150	0	5020	0	0	0	3	16	0	4	4	80034	0	80000	10	80040	80040	80040	80040	80040
80024	80039	600	0	0	0	50	25	80010	10	80000	10	80000	50	640000	0	1	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	129	1	5020	0	0	0	4	16	0	6	6	80034	0	80000	10	80040	80040	80040	80040	80040
80024	80039	600	0	0	0	50	25	80010	10	80000	10	80000	50	640000	0	0	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	111	0	5020	0	0	0	4	16	0	3	4	80034	0	80000	10	80040	80040	80040	80040	80040
80024	80039	600	0	0	0	50	25	80010	10	80000	10	80000	50	640000	0	0	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	108	0	5020	0	0	0	6	16	0	3	4	80034	0	80000	10	80040	80040	80040	80040	80040
80024	80039	599	0	0	0	50	25	80010	10	80000	10	80000	50	640000	0	1	80020	0	80039	80039	69986	0	3	70019	80010	20	80040	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	2	0	213	0	5020	0	0	0	7	49	0	4	4	80034	0	80000	10	80040	80040	80040	80040	80040
80024	80236	599	0	0	0	6578	25	80010	10	80000	10	80000	50	640000	0	0	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	240	0	5020	0	0	0	4	16	0	4	3	80034	0	80000	10	80040	80040	80040	80040	80040
80024	80039	600	0	0	0	50	25	80010	10	80000	10	80000	50	640000	0	0	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	195	0	5020	0	0	0	4	16	0	3	4	80034	0	80000	10	80040	80040	80040	80040	80040
80024	80039	600	0	0	0	50	25	80010	10	80000	10	80000	50	640000	0	1	80020	0	80039	80039	69986	0	3	70019	80010	20	80000	20	80000	80039	80039	1	1	80021	10	9	10	10	80000	10	0	0	0	0	117	0	5020	0	0	0	3	16	0	4	4	80034	0	80000	10	80040	80040	80040	80040	80040

FRSQRTE (scalar, D)

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: throughput

100 unrolls and 100 iterations

1000 unrolls and 10 iterations