Remove one unnecessary normalization
Use ijk indexing
Merge branch 'cudaupstream' into cudanew
Added cuda file for 4th order pressure solver
First step towards fourth order pressure on GPU
Added the 4th order boundary conditions
Working CPU version
Reenable GPU divergence calculation
Working boundary routine, but no divergence free field yet...
Next step, still working boundary
Working version of the BCs, one kernel to go
Working 4th order BCs
New kernels pressure solver
Working ghost cell kernel for pressure input
Input kernel for pressure, small bug somewhere...
Working presout function
Added the prepare function for 4th order pressure solver
Implemented offsets in advection and diffusion, small bug remaining
Fixed advection and diffusion offsets, test is running now, still one CUDA error
No more CUDA errors