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. Author manuscript; available in PMC: 2020 Apr 15.
Published in final edited form as: J Comput Phys. 2019 Feb 1;383:72–93. doi: 10.1016/j.jcp.2019.01.019

Table 4:

The strong scaling performance. n¯ represents the averaged number of FGMRES iterations for solving (3.16). TA and TL represent the timings for matrix assembly and linear solver, respectively. The efficiency is computed based on the total time.

Proc. n¯ TA (sec.) TL (sec.) Total (sec.) Efficiency
2 2.0 3.13 × 103 2.16 × 104 2.49 × 104 100%
4 2.0 1.57 × 103 1.09 × 104 1.26 × 104 99%
8 2.0 8.49 × 102 5.58 × 103 6.48 × 103 96%
16 2.0 4.38 × 102 2.96 × 103 3.43 × 103 91%
32 2.0 2.33 × 102 1.62 × 103 1.87 × 103 83%
64 2.0 1.10 × 102 8.37 × 102 9.56 × 102 81%
128 2.0 5.65 × 101 3.84 × 102 4.49 × 102 87%