AcousticVRZ

class AcousticVRZ(
    spatial_order=4,
    device="cpu",
    backend="torch",
    dim=2,
)

Implementation:

• src/sweep/equations/acoustic_vrz.py

2D acoustic equation using the vp and z parameterization.

Parameters

• spatial_order (int, optional): Finite-difference order. It should be an even number.
• device (device or str, optional): Target device used to place operator kernels and backend-specific tensors.
• backend (str, optional): Numerical backend, typically "torch" or "jax". If you plan to run with PropCUDA, this should still normally be "torch" rather than "cuda".
• dim (int, optional): Stored dimensionality. For this class the intended value is 2.

Models

• models (list[str]): ["vp", "z"]

Required models:

• vp: velocity parameter
• z: impedance-like parameter used by this formulation

Wavefields

• wavefields (list[str]): ["h1", "h2", "psix", "psiz", "zetax", "zetaz"]

Backend Behavior

• uses separable Laplace operators
• uses gradient kernels in the torch implementation
• supports compiled CUDA binding through _C()

Torch Binding

• supports_torch_binding() : True