Hacker News Reader

HNHacker News

Top New Best Ask Show Jobs

Comment by cpldcpu | Hacker News Reader

Full thread

cpldcpu·

Some more background information:

One of the original proposals for in-DRAM compute: https://users.ece.cmu.edu/~omutlu/pub/in-DRAM-bulk-AND-OR-ie...

First demonstration with off-the-shelf parts: https://parallel.princeton.edu/papers/micro19-gao.pdf

DRAM Bender, the tool they are using to implement this: https://github.com/CMU-SAFARI/DRAM-Bender

Memory-Centric Computing: Recent Advances in Processing-in-DRAMhttps://arxiv.org/abs/2412.19275

View on HN

In-DRAM goes back a long time. There were plenty of papers in the 90s about various ideas for turning a bank of DRAM into a SIMD machine. They weren't as clever as some of these ideas or as well developed but these papers are just the latest versions of an old idea.

Do any of those techniques use unmodified DRAM or are you talking about processor-in-memory approaches?

The abstract of OPs link mentions "Processing-Using-DRAM (PUD)" as exactly that, using off the shelf components. I do wonder how they achieve that, I guess fiddling with the controller in ways that are not standard but get the job (processing data in memory) done.

Edit: Oh and cpldcpu linked the ComputeDRAM paper that explains how to do it with off the shelf parts.

That context is very helpful. But you don't need to poo-poo the ideas as "just another iteration". Everything we have today is built on top of decades of prior work. The paper itself mentions a lot of prior work.

Reply on news.ycombinator.com