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Table 4 Multinode experimental performance.

From: Parallel Backprojection: A Case Study in High-Performance Reconfigurable Computing

Nodes   Software   Hardware
  Mean Standard deviation Speedup Mean Standard deviation Speedup
1 1943.2 6.15 1.0 25.0 .01 1.0
2 983.2 10.46 2.0 13.4 .02 1.9
4 496.0 4.60 3.9 7.8 .02 3.9
8 256.5 5.85 7.6 4.0 .06 6.0
16 128.4 1.28 15.1