Protocol

dma-buf

Lab ready Full lab

Linux buffer-sharing primitive for zero-copy exchange across drivers such as GPU, NIC, and media. Exporters and importers negotiate access with fences for synchronization. It is the kernel building block under many GPUDirect and multimedia paths.

Domains

Tags

linuxzero-copybufferp2p

Sources

  • Linux dma-buf documentation

Related protocols

GPUDirect RDMA

Lab ready

NIC DMA path that reads and writes GPU memory directly, bypassing host bounce buffers for RDMA verbs. Requires peer-to-peer BAR mapping, …

ai

GPUDirect Storage

Lab ready

GPUDirect Storage (GDS) provides a direct DMA path between NVMe and GPU memory, skipping host bounce buffers. Filesystem and driver suppo…

aistorage

NVMe

Lab ready

NVM Express — PCIe register and queue interface for SSDs with submission/completion queues, PRP/SGL data pointers, and admin commands. Pa…

storageai