A data processing unit (DPU) is a programmable computer processor that tightly integrates a general-purpose CPU with network interface hardware. [1] They are also occasionally called "IPUs" (infrastructure processing unit) or "SmartNICs". [2] They can be used in place of traditional NICs to relieve the main CPU of complex networking responsibilities and other "infrastructural" duties; although their features vary, they may be used to perform encryption/decryption, serve as a firewall, handle TCP/IP, process HTTP requests, or even function as a hypervisor or storage controller. [1] [3]
These devices can be attractive to cloud computing providers whose servers might otherwise spend a significant amount of CPU time on these tasks, cutting into the cycles they can provide to guests. [1] They see use in other kinds of data center environments as well due to their improved power consumption efficiency for routine networking tasks compared to general-purpose CPUs. [4]
