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Table 6 Power, execution times and energy consumption on different number of GTX980 GPUs for the chr22 comparison

From: DNA sequences alignment in multi-GPUs: acceleration and energy payoff

No. GPUs Stage 1 Stage 2 Stage 3 Total Versus 2 GPUs  
  Average power (watts)   GCUPS/W
4 101.11 W 116.26 W 77.27 W 101.33 W   0.55
3 101.53 W 108.16 W 78.79 W 101.62 W   0.59
2 100.30 W 114.68 W 76.74 W 100.38 W   0.57
  Execution time (seconds)   GCUPS
4 11161.92 s 185.20 s 14.25 s 11361.38 s 1.96x 224.59
3 14719.32 s 253.72 s 17.70 s 14990.76 s 1.49x 170.21
2 22080.04 s 159.77 s 23.17 s 22262.99 s   114.62
  Energy consumption (kilojoules)   Cost
4 1128.63 kJ 21.53 kJ 1.10 kJ 4x 1151.27 kJ 1.03x 0.1660 €
3 1494.60 kJ 27.45 kJ 1.40 kJ 3x 1523.44 kJ 1.02x 0.1650 €
2 2214.77 kJ 18.32 kJ 1.78 kJ 2x 2234.88 kJ   0.1614 €
  1. We also compare performance and power consumption versus the execution on 2 GPUs