Compare Pi2 with a computer under Windows 8.1 x64 with a processor Intel i7-2630QM at a 2.8 GHz frequency

Our teacher gave us an executable solving the nqueens problem. Here is the syntax : Nqueens nbQueens model nbSolSearched strategy

• nbQueens is the number of queens.
• model is the number of the model to use : we only tested with model 1.
• nbSolSearched is the number of solutions we want to find. 0 means all solutions.
• strategy is the strategy to apply to solve the problem, either we don't put anything and it's just the domain order, or we put 1 and it's the minimum domain.

We launched it multiple times, but we also did it with parallel executions by executing the Nqueens with the same parameters in parallel.
The results were too big to put in one table so you have to choose the number of parallel executions to see the associated table of results :

Single execution

2 parallel executions

4 parallel executions

6 parallel executions

8 parallel executions

Single execution

nbQueens	model	nbSolSearched	strategy	typeInfos	Pi2(in ms)	I7(in ms)	Pi2/I7
10	1	0	0
				Search Time(in ms)	123	17	7,2352941176
				Performance(decisions per second)	108367	783477	0,1383154834
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
10	1	0	1
				Search Time(in ms)	94	16	5,875
				Performance(decisions per second)	121175	712119	0,1701611669
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
20	1	10	0
				Search Time(in ms)	1072	165	6,496969697
				Performance(decisions per second)	97840	632563	0,1546723409
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	10	1
				Search Time(in ms)	5	0
				Performance(decisions per second)	73093	448178	0,163089219
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	0
				Search Time(in ms)	2785	418	6,6626794258
				Performance(decisions per second)	93819	624248	0,1502912304
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	1
				Search Time(in ms)	74	12	6,1666666667
				Performance(decisions per second)	85424	501411	0,1703672237
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
50	1	1	1
				Search Time(in ms)	17	2	8,5
				Performance(decisions per second)	62059	381501	0,162670609
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	10	1
				Search Time(in ms)	54	8	6,75
				Performance(decisions per second)	66594	428399	0,1554485421
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	100	1
				Search Time(in ms)	251	38	6,6052631579
				Performance(decisions per second)	69862	452427	0,1544160715
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2247296	2979072	0,7543610896
100	1	1	1
				Search Time(in ms)	12	1	12
				Performance(decisions per second)	11225	101742	0,1103280848
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10	1
				Search Time(in ms)	13	1	13
				Performance(decisions per second)	20860	187375	0,1113275517
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100	1
				Search Time(in ms)	37	5	7,4
				Performance(decisions per second)	54682	381821	0,1432137049
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	1000	1
				Search Time(in ms)	515	75	6,8666666667
				Performance(decisions per second)	62793	426760	0,1471389071
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10000	1
				Search Time(in ms)	5178	754	6,8673740053
				Performance(decisions per second)	64945	446050	0,145600269
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100000	1
				Search Time(in ms)	94355	13746	6,8641786702
				Performance(decisions per second)	62122	426413	0,1456850518
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259

2 parallel executions

nbQueens	model	nbSolSearched	strategy	typeInfos	Pi2(in ms)	I7(in ms)	Pi2/I7
10	1	0	0
				Search Time(in ms)	141	16	8,8125
				Performance(decisions per second)	94331	807065	0,1168815399
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
10	1	0	1
				Search Time(in ms)	97	14	6,9285714286
				Performance(decisions per second)	117720	777766	0,1513565777
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
20	1	10	0
				Search Time(in ms)	1101	164	6,7134146341
				Performance(decisions per second)	95225	638222	0,1492035687
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	10	1
				Search Time(in ms)	5	0
				Performance(decisions per second)	72426	458588	0,1579326105
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	0
				Search Time(in ms)	2818	435	6,4781609195
				Performance(decisions per second)	92720	599537	0,1546526736
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	1
				Search Time(in ms)	75	13	5,7692307692
				Performance(decisions per second)	83710	477331	0,175370969
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
50	1	1	1
				Search Time(in ms)	18	3	6
				Performance(decisions per second)	56125	339667	0,1652353629
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	10	1
				Search Time(in ms)	58	9	6,4444444444
				Performance(decisions per second)	61765	402420	0,1534839223
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	100	1
				Search Time(in ms)	256	42	6,0952380952
				Performance(decisions per second)	68515	413709	0,1656115772
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2247296	2979072	0,7543610896
100	1	1	1
				Search Time(in ms)	17	1	17
				Performance(decisions per second)	7872	115672	0,0680544989
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10	1
				Search Time(in ms)	19	1	19
				Performance(decisions per second)	14936	178441	0,0837027365
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100	1
				Search Time(in ms)	41	4	10,25
				Performance(decisions per second)	48533	426792	0,1137158147
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	1000	1
				Search Time(in ms)	531	74	7,1756756757
				Performance(decisions per second)	60908	433106	0,1406307001
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10000	1
				Search Time(in ms)	5362	798	6,7192982456
				Performance(decisions per second)	62722	421382	0,1488483134
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100000	1
				Search Time(in ms)	97299	14136	6,8830645161
				Performance(decisions per second)	60242	414628	0,1452916831
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259

4 parallel executions

nbQueens	model	nbSolSearched	strategy	typeInfos	Pi2(in ms)	I7(in ms)	Pi2/I7
10	1	0	0
				Search Time(in ms)	112	16	7
				Performance(decisions per second)	118193	804092	0,1469893992
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
10	1	0	1
				Search Time(in ms)	100	15	6,6666666667
				Performance(decisions per second)	113821	759649	0,1498336732
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
20	1	10	0
				Search Time(in ms)	1124	167	6,7305389222
				Performance(decisions per second)	93302	625025	0,1492772289
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	10	1
				Search Time(in ms)	6	0
				Performance(decisions per second)	56049	450601	0,1243872073
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	0
				Search Time(in ms)	2839	423	6,7115839243
				Performance(decisions per second)	92032	617366	0,1490720253
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	1
				Search Time(in ms)	83	12	6,9166666667
				Performance(decisions per second)	76241	518585	0,1470173646
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
50	1	1	1
				Search Time(in ms)	22	2	11
				Performance(decisions per second)	47059	394032	0,1194293864
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	10	1
				Search Time(in ms)	64	8	8
				Performance(decisions per second)	56471	429854	0,1313725125
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	100	1
				Search Time(in ms)	289	39	7,4102564103
				Performance(decisions per second)	60686	442873	0,1370279967
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2247296	2979072	0,7543610896
100	1	1	1
				Search Time(in ms)	34	1	34
				Performance(decisions per second)	3990	126287	0,031594701
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10	1
				Search Time(in ms)	36	1	36
				Performance(decisions per second)	7889	203648	0,0387384114
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100	1
				Search Time(in ms)	63	4	15,75
				Performance(decisions per second)	31889	412472	0,0773119145
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	1000	1
				Search Time(in ms)	638	73	8,7397260274
				Performance(decisions per second)	50663	440354	0,1150506184
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10000	1
				Search Time(in ms)	6223	759	8,1989459816
				Performance(decisions per second)	54042	442920	0,1220130046
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100000	1
				Search Time(in ms)	114758	14119	8,1279127417
				Performance(decisions per second)	51077	415131	0,1230382698
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259

6 parallel executions

nbQueens	model	nbSolSearched	strategy	typeInfos	Pi2(in ms)	I7(in ms)	Pi2/I7
10	1	0	0
				Search Time(in ms)	151	16	9,4375
				Performance(decisions per second)	88202	810262	0,1088561478
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
10	1	0	1
				Search Time(in ms)	145	14	10,3571428571
				Performance(decisions per second)	78307	768084	0,1019510887
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
20	1	10	0
				Search Time(in ms)	1346	172	7,8255813953
				Performance(decisions per second)	77930	609322	0,1278962519
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	10	1
				Search Time(in ms)	14	0
				Performance(decisions per second)	26527	448983	0,0590824151
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	0
				Search Time(in ms)	4603	439	10,4851936219
				Performance(decisions per second)	56773	595249	0,0953768927
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	1
				Search Time(in ms)	150	13	11,5384615385
				Performance(decisions per second)	42203	473508	0,089128378
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
50	1	1	1
				Search Time(in ms)	19	2	9,5
				Performance(decisions per second)	54463	413502	0,1317115758
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	10	1
				Search Time(in ms)	96	8	12
				Performance(decisions per second)	37724	433959	0,0869298713
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	100	1
				Search Time(in ms)	300	40	7,5
				Performance(decisions per second)	58475	431717	0,135447527
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2247296	2979072	0,7543610896
100	1	1	1
				Search Time(in ms)	58	1	58
				Performance(decisions per second)	2348	126827	0,018513408
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10	1
				Search Time(in ms)	21	1	21
				Performance(decisions per second)	13584	205649	0,0660542964
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100	1
				Search Time(in ms)	55	5	11
				Performance(decisions per second)	36559	376287	0,0971572231
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	1000	1
				Search Time(in ms)	813	77	10,5584415584
				Performance(decisions per second)	39800	418928	0,0950043922
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10000	1
				Search Time(in ms)	9519	761	12,5085413929
				Performance(decisions per second)	35333	441679	0,0799970114
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100000	1
				Search Time(in ms)	172107	13836	12,4390719861
				Performance(decisions per second)	34057	423625	0,0803942166
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259

8 parallel executions

nbQueens	model	nbSolSearched	strategy	typeInfos	Pi2(in ms)	I7(in ms)	Pi2/I7
10	1	0	0
				Search Time(in ms)	241	16	15,0625
				Performance(decisions per second)	55304	803719	0,068810119
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
10	1	0	1
				Search Time(in ms)	142	16	8,875
				Performance(decisions per second)	80359	711937	0,1128737515
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	649792	1176704	0,5522136408
20	1	10	0
				Search Time(in ms)	2289	179	12,7877094972
				Performance(decisions per second)	45825	586069	0,078190452
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	10	1
				Search Time(in ms)	14	0
				Performance(decisions per second)	27275	416343	0,0655108889
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	0
				Search Time(in ms)	5774	453	12,7461368653
				Performance(decisions per second)	45253	575932	0,0785735122
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
20	1	100	1
				Search Time(in ms)	159	12	13,25
				Performance(decisions per second)	39718	497274	0,0798714592
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	920128	1578112	0,5830562089
50	1	1	1
				Search Time(in ms)	37	2	18,5
				Performance(decisions per second)	28152	368038	0,0764921014
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	10	1
				Search Time(in ms)	112	9	12,4444444444
				Performance(decisions per second)	32437	386320	0,0839640712
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2239104	2979072	0,75161124
50	1	100	1
				Search Time(in ms)	560	45	12,4444444444
				Performance(decisions per second)	31340	388255	0,0807201453
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	2247296	2979072	0,7543610896
100	1	1	1
				Search Time(in ms)	62	1	62
				Performance(decisions per second)	2178	95895	0,0227123416
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10	1
				Search Time(in ms)	31	1	31
				Performance(decisions per second)	9229	172609	0,0534676639
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100	1
				Search Time(in ms)	74	5	14,8
				Performance(decisions per second)	27218	379763	0,0716710159
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	1000	1
				Search Time(in ms)	1186	79	15,0126582278
				Performance(decisions per second)	27286	409175	0,0666854036
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	10000	1
				Search Time(in ms)	12503	771	16,2166018158
				Performance(decisions per second)	26900	436218	0,0616664145
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259
100	1	100000	1
				Search Time(in ms)	228279	14317	15,9446113013
				Performance(decisions per second)	25677	409405	0,0627178466
				Reserved Memory(in bytes)	0	0
				Used Memory(in bytes)	5991680	6887168	0,8699773259