Skip to main content

Table 4 Proportions of sequential and parallel parts of task-distributors’ runtime in the cluster of Raspberry Pi computers when a single one, two, four or eight nodes (processors) are used

From: Parallel image computation in clusters with task-distributor

  Resolution 1st seq. part (%) 2nd seq. part (%) Parallel part (%)
1 node used 200 × 150 4.29 4.16 91.55
400 × 300 1.96 1.84 96.20
800 × 600 0.58 0.54 98.88
1600 × 1200 0.15 0.15 99.70
3200 × 2400 0.03 0.03 99.94
6400 × 4800 a 0.01 99.99
2 nodes used 200 × 150 3.78 8.49 87.73
400 × 300 2.34 8.00 89.66
800 × 600 0.90 6.76 92.34
1600 × 1200 0.27 5.95 93.78
3200 × 2400 0.05 4.39 95.56
6400 × 4800 0.01 10.31 89.68
4 nodes used 200 × 150 3.44 9.51 87.05
400 × 300 2.57 9.67 87.76
800 × 600 1.20 9.72 89.08
1600 × 1200 0.45 8.62 90.93
3200 × 2400 0.10 6.73 93.17
6400 × 4800 0.02 12.77 87.21
8 nodes used 200 × 150 3.04 10.47 86.49
400 × 300 2.32 11.61 86.07
800 × 600 1.63 12.41 85.96
1600 × 1200 0.54 12.81 86.65
3200 × 2400 0.14 10.53 89.33
6400 × 4800 0.03 19.11 80.86
  1. a The value is too small for representing it in this table