Finally! A Real Virtual Memory Chip

A big red letter X over a box marked MMUAt long last a chip has been embodied to simplify the use of virtual memory, a computing architecture that has been in use since the 1960s. The Memory Guy was given a sneak peek at this new approach by no other than Olly Mugwump, a highly-respected computer architect and longstanding member and fellow of several important technical societies.  The new design promises to accelerate memory accesses while Continue reading “Finally! A Real Virtual Memory Chip”

What is “Stranded Memory?”

Cartoon of a tiny island of sand with a single palm tree and a DIMM. "Help" is written in the sand.CXL has been embraced by hyperscale data center managers as a means of solving the problem of “Stranded Memory.”  If you don’t know what stranded memory is, then this post is intended to help you to understand.  It’s based on a few slides from a presentation that IEEE President Tom Coughlin and The Memory Guy made at the Storage Networking Industry Association (SNIA) CMS Summit in April 2023.  SNIA has posted a video of the entire Continue reading “What is “Stranded Memory?””

Processing-In-Memory, 1960s-Style

Famous photo of Apollo 11's Buzz Aldrin on the moon.There’s a surge of interest these days in Processing in Memory or PIM.  Some call it “Compute in Memory.”  Either way, it often involves adding small amounts of logic to a memory chip to allow it to offload tasks from the CPU.

There are various reasons to do this.  The most important is that PIM frees the CPU to do other chores.  PIM also can reduce Continue reading “Processing-In-Memory, 1960s-Style”

Objective Analysis 2024 Forecast Released

Close-Up of the COVID-19 Super Cycle and of 2023 from the chart below.Objective Analysis has just released its 2024 semiconductor forecast, and it seems fitting to mention it on The Memory Guy blog since memories are a key part of the semiconductor business’ cyclicality.  Let’s have a quick look at what’s in store.

Late 2023 is starting to show signs of another super cycle similar to those of Continue reading “Objective Analysis 2024 Forecast Released”

Remembering Simon Sze

I was saddened to hear last week of the death this month of Simon Sze, the co-inventor of the floating gate, which was the basis of EPROM, E²PROM, and nearly all flash memory prior to the advent of 3D NAND, which uses a charge trap instead.

Dr. Sze was not only responsible for the floating gate, but he was a pioneer in Continue reading “Remembering Simon Sze”

Weebit Moves Ahead Step-By-Step

Green box with three prongs sticking out o each side to abstractly imply a packaged chip.In the world of startups it’s unusual to see one that disciplines itself to a steady cadence of consistent execution.   Countless times The Memory Guy blog has profiled companies that perform some important feat, and then fail to repeat that success.  With that background it’s refreshing to see a company that methodically moves in a straight line towards its goal.

The company I am talking about today is Continue reading “Weebit Moves Ahead Step-By-Step”

Two CXL Conundrums

 

Red square with white letters "CXL" interspersed with question marksWith all the interest in CXL lately it’s past time for The Memory Guy blog to weigh in on this new technology.  Although I plan to write a little tutorial soon, this post will start with the idea that the reader already has some knowledge of CXL and can appreciate the two conundrums I am about to discuss.

CXL’s magic is mainly that it can add memory to systems in a way that doesn’t bog down the Continue reading “Two CXL Conundrums”

World Record ReRAM and More

Photo of Ron Neale, Renowned Phase-Change Memory ExpertRon Neale joins us to look at a new World Record for Oxide-ReRAMs.  Here he explores the possibility that, rather than an analogue-like device with a continuum of conduction states, the resolution limit of conductance stems from discrete building blocks or nano-filaments that define the changes between those states.  A dichotomy of views on oxide ReRAM operation is part of the mix.


For Oxide ReRAM watchers, one of the highlights of the first half of 2023 was Continue reading “World Record ReRAM and More”