A brief overview of IBM's new 7 nm Telum mainframe CPU. A typical

[Anne & Lynn Wheeler]

.... oops, somehow got in job vacancy thread

A brief overview of IBM's new 7 nm Telum mainframe CPU. A typical
Telum-powered mainframe offers 256 cores at a base clock of 5+GHz.
https://arstechnica.com/gadgets/2021/09/ibms-telum-mainframe-processor-introduces-new-cache-architecture/
The 14 nm IBM z15 CPU which Telum is replacing features five total
processors--two pairs of 12-core Compute Processors and one System
Controller. Each Compute Processor hosts 256MiB of L3 cache shared
between its 12 cores, while the System Controller hosts a whopping
960MiB of L4 cache shared between the four Compute Processors. ...

From here, four Telum CPU packages combine to make one four-socket
"drawer," and four of those drawers go into a single mainframe
system. This provides 256 total cores on 32 CPUs. Each core runs at a
base clockrate over 5 GHz--providing more predictable and consistent
latency for real-time transactions than a lower base with higher turbo
rate would.

... snip ...

z196 seemed to have been the last where there were real live benchmark
numbers ... since then things got a lot more obfuscated ... getting
percents from previous machines. z196 documents have some statement that
1/3 to 1/2 of z10->z196 per processor performance improvement is
introduction of memory latency compensating technology (that had been in
other platforms for long time), out-of-order execution, branch
prediction, etc

z900, 16 processors, 2.5BIPS (156MIPS/proc), Dec2000
z990, 32 processors, 9BIPS, (281MIPS/proc), 2003
z9, 54 processors, 18BIPS (333MIPS/proc), July2005
z10, 64 processors, 30BIPS (469MIPS/proc), Feb2008
z196, 80 processors, 50BIPS (625MIPS/proc), Jul2010
EC12, 101 processors, 75BIPS (743MIPS/proc), Aug2012
z13, 140 processors, 100BIPS (710MIPS/proc), Jan2015
z14, 170 processors, 150BIPS (862MIPS/proc), Aug2017
z15, 190 processors, 190BIPS* (1000MIPS/proc), Sep2019

* pubs say z15 1.25 times z14 (1.25*150BIPS or 190BIPS)

--
virtualization experience starting Jan1968, online at home since Mar1970

[Anne & Lynn Wheeler]

some more

IBM's New Mainframe 7nm CPU Telum: 16 Cores At 5GHz, Virtual L3 and L4 Cache
https://slashdot.org/story/21/09/05/0321217/ibms-new-mainframe-7nm-cpu-telum-16-cores-at-5ghz-virtual-l3-and-l4-cache
IBM Telum Processor: the next-gen microprocessor for IBM Z and IBM LinuxONE
https://www.ibm.com/blogs/systems/ibm-telum-processor-the-next-gen-microprocessor-for-ibm-z-and-ibm-linuxone/

[Anne & Lynn Wheeler]

some more

Did IBM Just Preview The Future of Caches?
https://www.anandtech.com/show/16924/did-ibm-just-preview-the-future-of-caches
IBM's newest chip is more than meets the AI. Telum, an AI processor developed with technology from IBM Research, will power IBM systems.
https://www.research.ibm.com/blog/telum-processor
IBM Telum- A New Chapter In Vertically Integrated Chip Technology
https://www.forbes.com/sites/patrickmoorhead/2021/08/23/ibm-telum--a-new-chapter-in-vertically-integrated-chip-technology/
IBM's new Telum Processor is the company's first with an on-chip AI accelerator
https://www.techrepublic.com/article/ibms-new-telum-processor-is-the-companys-first-with-an-on-chip-ai-accelerator/
IBM introduces Telum chips aimed at AI inferencing workloads like fraud detection
https://www.zdnet.com/article/ibm-introduces-telum-chips-aimed-at-ai-inferencing-workloads-like-fraud-detection/
IBM Launches New Telum Processor
https://futurumresearch.com/research-notes/ibm-launches-new-telum-processor/
IBM's New System Z CPU Offers 40 Percent More Performance per Socket, Integrated AI
https://www.extremetech.com/computing/326402-ibms-new-system-z-cpu-offers-40-percent-more-performance-per-socket-integrated-a