logoalt Hacker News

denotational12/09/20241 replyview on HN

> The Intel Xeon is not a less exotic example of a DMA controller.

The full context is:

> The DMA controller is just used as an “memcpy() hardware accelerator”. And this is not a joke. Sometimes those blocks are used in microcontrollers to copy large swathes of data inside RAM. A less exotic example of this we can mention are Intel Xeon platforms.

I interpreted this as a reference to the Data Streaming Accelerator (DSA) [1], which is a programmable DMA peripheral on the SoC that can be used to accelerate writes to and from I/O devices (amongst other things).

[1] : https://www.intel.com/content/www/us/en/products/docs/accele...


Replies

Syonyk12/09/2024

But they never expand on that in the article. They just drop the Xeon reference there, and carry on as though they'd never said a thing about a Xeon.

I agree, that's probably what they're referring to, but it was neither needed to make the points they were trying to make, nor expanded into something to further strengthen the points made.