TESLA GPUs versus MPI with OpenMP for the Forward Modeling of Gravity and Gravity Gradient of Large Prisms Ensemble

Table 3

Errors of the components of the gradient tensor of gravity in double precision, with respect to its sequential counterpart.

Gravity gradient tensor components	Error L2; 1-GPU (DP)	Error L2; 4-GPU (DP)
𝐺𝑧𝑧	4.6290𝑒−11	4.6373𝑒−11
𝐺𝑥𝑥	7.7994𝑒−11	7.8030𝑒−11
𝐺𝑦𝑦	8.8905𝑒−11	8.8935𝑒−11
𝐺𝑥𝑦	5.3476𝑒−11	5.3503𝑒−11
𝐺𝑥𝑧	9.2797𝑒−10	9.2792𝑒−10
𝐺𝑦𝑧	2.7225𝑒−10	2.7207𝑒−10