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posted by martyb on Monday January 10, @11:02PM   Printer-friendly
from the computers-without-Alzheimers-department dept.

Mass production of revolutionary computer memory moves closer with ULTRARAM™ on silicon wafers for the first time

ULTRARAM™ is a novel type of memory with extraordinary properties. It combines the non-volatility of a data storage memory, like flash, with the speed, energy-efficiency and endurance of a working memory, like DRAM. To do this it utilises the unique properties of compound semiconductors, commonly used in photonic devices such as LEDS, laser diodes and infrared detectors, but not in digital electronics, which is the preserve of silicon.

[...] Now, in a collaboration between the Physics and Engineering Departments at Lancaster University and the Department of Physics at Warwick, ULTRARAM™ has been implemented on silicon wafers for the very first time.

Professor Manus Hayne of the Department of Physics at Lancaster, who leads the work said, "ULTRARAM™ on silicon is a huge advance for our research, overcoming very significant materials challenges of large crystalline lattice mismatch, the change from elemental to compound semiconductor and differences in thermal contraction."

[...] Remarkably, the ULTRARAM™ on silicon devices actually outperform previous incarnations of the technology on GaAs compound semiconductor wafers, demonstrating (extrapolated) data storage times of at least 1000 years, fast switching speed (for device size) and program-erase cycling endurance of at least 10 million, which is one hundred to one thousand times better than flash.

So... are we approaching the point where we get a plug-in RAM storage module that can be used like nonvolatile RAM -- because it is nonvolatile? And when you've built complex data structures on it with RAM efficiency, you can unplug it and put it, and of course the data, on a shelf for later use?

Or just plug it into a computer when you need an extra 24 gigabytes of RAM to formally verify a category-theoretical theorem?

How would *you* like to use this?

Journal Reference:
Peter D. Hodgson, Dominic Lane, Peter J. Carrington, et al. ULTRARAM: A Low‐Energy, High‐Endurance, Compound‐Semiconductor Memory on Silicon [open], Advanced Electronic Materials (DOI: 10.1002/aelm.202101103)


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  • (Score: 1, Interesting) by Anonymous Coward on Tuesday January 11, @04:09PM

    by Anonymous Coward on Tuesday January 11, @04:09PM (#1211793)

    Just because it flows naturally from the attributes of the hardware doesn't mean it's a bad idea.

    Suppose something crashes. Now you can't just restart it, you have to reinstall.

    Most of what computers do is ephemeral. Hardware devices are used by one program, then another. No program can assume it will be in the same state it was in before. Network connections expire if not used, or need to be reconnected when the device changes networks. Data gets stale and must be updated.

    You couldn't dual boot operating systems.

    Most of the things you cite as advantages are already available. If you want multiple stacks, that's what threads are. If you want multiple heaps, you can do that, although the main use for that is for generational garbage collectors, which are also a thing. Presenting files as memory is already done by mmap().

    The answer to "it would be nice to not have to use virtual memory" is not actually "non-volatile memory" but rather "more RAM."

    There are really just no advantages to this. Working memory and storage should be separate.

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