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

Table 1

Errors of the components of the gravimetric tensor, calculated with CUDA in double precision, with respect to its sequential counterpart in double precision.

Gravity components	Error L2; 1-GPU (DP)	Error L2; 4-GPU (DP)
𝐺𝑧	2.0582𝑒−09	2.0581𝑒−09
𝐺𝑥	1.7107𝑒−09	1.7106𝑒−09
𝐺𝑦	1.1162𝑒−09	1.1163𝑒−09