Module zero_copy 

Zero-copy (host-mapped) memory.

Allows GPU kernels to directly access host memory without explicit transfers. Useful for small, frequently-updated data or when PCIe bandwidth is acceptable.

How it works

Zero-copy memory is allocated on the host with the CU_MEMHOSTALLOC_DEVICEMAP flag, which makes it accessible from GPU kernels via a device pointer obtained from cuMemHostGetDevicePointer. The GPU reads/writes traverse the PCIe bus on each access, so this is best suited for data that is accessed infrequently or streamed sequentially.

Status

This module is a placeholder. Full implementation is planned for a future release once the cuMemHostAlloc and cuMemHostGetDevicePointer function pointers are added to oxicuda-driver.

Structs

MappedBuffer

A host-allocated, device-mapped (zero-copy) memory buffer.