3D smoothing for acoustic media

[meiqgg]

Hi everyone,

I'm working with SPECFEM3D and need to apply 3D smoothing to an acoustic velocity model (e.g., vp). However, the built-in Gaussian smoothing routine in SPECFEM3D is very slow for 3D models.

Are there any better alternatives for 3D smoothing of acoustic models?

Thanks in advance!

[zhangchang271]

GPU version smooth is pretty fast, for example:
mpirun -n 4 bin/xsmooth_sem 3 1 vp_kernel /csim1/zhangchang/corbetti/scratch/eval_grad/mk_nosmooth/ /csim1/zhangchang/corbetti/scratch/eval_grad/misfit_kernel/ .true