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Why Do Mainframes Still Exist? What's Inside One? 40TB, 200+ Cores, AI, and more!

Dave's Garage

1.1M subscribers • 9 videos on Hallway

YouTube
  • Recommended by 3 people: 3 on Hacker News.
  • Presented by Dave Plummer, former Microsoft engineer

Beginner. No background in the topic needed.

1.1M views3 years ago3 recommendations

HardwareSystems programmingCPUs and computer architectureOperating systems

Dave Plummer tours an IBM factory and test lab to show how the z16 mainframe is built and explain why mainframes remain vital.

Dave Plummer explores the IBM z16 mainframe from design to assembly and testing. What's inside a modern IBM z16 mainframe that makes it relevant today? For info on my book on ASD/Asperger's, please check out: amzn.to/47ItFnR Introduction Inside the z16 Super Input Output Factory Assembly Accelerators Test Lab DIMM installation Water Cooling Why Mainframes? Fiber Conclusions Errata: Around , the CPUs are LGA(Land Grid Array), not PGA At about should be 200 cores, not 256. At , they now achieve eight nines of reliability for both z16 and its Linux-only counterpart, the IBM LinuxONE 4. In a LinuxONE config, max RAM is 48TB.

Why it's here

3 people recommend this

What people say. Recommended as an intriguing and detailed look inside modern mainframe hardware and its unique reliability engineering.

virgulinoon Hacker News • Recommends

On “Telum II at Hot Chips 2024: Mainframe with a Unique Caching Strategy”

"Why Do Mainframes Still Exist? What's Inside One? 40TB, 200+ Cores, AI, and more! - Dave explores the IBM z16 mainframe from design to assembly and testing. What's inside a modern IBM z16 mainframe that makes it relevant today?" - by Dave Plummer. This is an amazing 23-minute video by the Microsoft programmer who developed the Windows NT Task Manager, among other things. He visits IBM and talks to engineers about the Telum chip architecture (Hot Chips 2023), used in the z16 mainframe. Special attention is paid to the cache. link to this video
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baneon Hacker News • Recommends

On “The Rise and Fall of the 'IBM Way'”

…is the idea that you assume some percentage of your hardware will fail (instead of trying to make it never die) -- then you engineer around that. I'm not sure what will win in the end, but right now the entire industry is telling us to have failover into different availability zones in Amazon, or even across clouds -- one of which IBM offers. 1 - link to this video (asterisk) - IBM does sort of have an understanding of this of course, they have a cloud after all.…
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Tor3on Hacker News • Recommends

On “New IBM LinuxONE 4 Express – Rack-mounted pre-configured Linux mainframe”

Check out this youtube video: link to this video It does a reasonably good job at comparing mainframes to a regular server setup. It's not about SPEC or GFLOPs etc.
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Keyframeon Hacker News • Mentions

On “New IBM LinuxONE 4 Express – Rack-mounted pre-configured Linux mainframe”

Dave Plummer recently did a tour: link to this video It's definitely intriguing if it were.. I don't know, available to tinker with?
View on Hacker News