Scaling

hybrid scaling on jugene

• benchmark version: 1.0.0
• IBM BG/P jugene
• time needed for one time step, whereas it is computed by averaging the last 5 steps
• used time output is provided in the stdout as t_all

data

• number of particle: 100,000
• input file: small.para

mpi ranks	time [s]	speedup	speedup w.r.t. 1
1	39.95	1	1
2	20.86	1.92	1.92
4	10.8	3.7	3.7
8	5.64	7.08	7.08
16	3.07	13.02	13.02
32	1.76	22.67	22.67
64	1.07	37.3	37.3
128	0.7	56.74	56.74
256	0.56	71.58	71.58

• number of particle: 1,600,000
• input file: medium.para

mpi ranks	time [s]	speedup	speedup w.r.t. 1
16	61.9	1	16
32	32.1	1.93	30.85
64	16.41	3.77	60.35
128	8.72	7.1	113.58
256	4.72	13.11	209.83
512	2.67	23.19	371.08
1024	1.76	35.23	563.69
2048	1.51	40.94	655.03

• number of particle: 25,600,000
• input file: large.para

mpi ranks	time [s]	speedup	speedup w.r.t. 1
256	91.41	1	256
512	46.97	1.95	498.21
1024	24.78	3.69	944.35
2048	13.61	6.72	1719.39
4096	8.63	10.59	2711.27
8192	7.94	11.51	2945.74

• number of particle: 102,400,000
• input file: xlarge.para

mpi ranks	time [s]	speedup	speedup w.r.t. 1
2048	57.94	1	2048
4096	32.4	1.79	3662.38
8192	24.14	2.4	4915.54

plot

timing of individual phases

data

cores

trun

t0_domains

t0_allocate

t0_build

t0_branches

t0_fill

t0_properties

t0_walk

t0_walkc

t0_force

t0_restore

t0_deallocate

t0_all

ttot

Phase 1

Phase 2

Phase 3

Phase 4

256

1.70E-01

1.09E+00

2.70E-01

2.99E-01

2.74E-01

6.08E-01

8.07E-01

3.53E+01

9.57E+00

4.34E+01

2.08E-01

1.24E-03

9.14E+01

9.15E+01

1.57

1.99

78.66

4.34E+001

512

1.90E-01

7.66E-01

2.57E-01

2.00E-01

1.73E-01

4.06E-01

5.04E-01

1.75E+01

5.67E+00

2.15E+01

1.41E-01

5.29E-04

4.70E+01

4.71E+01

1.16

1.28

38.98

2.15E+001

1024

1.90E-01

3.83E-01

2.47E-01

1.59E-01

1.01E-01

3.79E-01

3.89E-01

8.71E+00

3.76E+00

1.08E+01

7.72E-02

6.59E-04

2.48E+01

2.49E+01

0.71

1.03

19.48

1.08E+001

2048

1.80E-01

2.57E-01

1.88E-01

1.36E-01

8.43E-02

4.78E-01

4.41E-01

4.42E+00

2.25E+00

5.38E+00

6.62E-02

3.17E-04

1.36E+01

2.05E+01

0.51

1.14

9.8

5.38E+000

4096

1.80E-01

3.29E-01

1.74E-01

1.23E-01

1.20E-01

8.22E-01

7.05E-01

2.27E+00

1.38E+00

2.71E+00

5.41E-02

5.55E-03

8.63E+00

1.95E+01

0.56

1.77

4.97

2.71E+000

8192

1.80E-01

6.05E-01

1.73E-01

1.18E-01

2.36E-01

1.48E+00

1.23E+00

1.16E+00

1.60E+00

1.34E+00

5.31E-02

3.20E-04

7.94E+00

2.74E+01

0.83

3.07

2.49

1.34E+000

plot