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sllabres a day ago

For those who have asked who runs this system: Power systems today run either "AS/400" aka iSeries, IBMs traditional Unix (AIX) or Linux (RedHat or SuSE).

In addition to the technical parameters mentioned in the article (an IBM Red Book would certainly provide more):

From what I know from conversations, SAP users are a large customers base for Power systems. I think the size of the possible main memory might be one reason, persistent main memory [1] could be another, in my opinion. But this feature is not new, it was available at least with Power 9. The systems are available with up to 64 TB memory (I don't know if all this memory would by available for one process, but from what I have read at least 32 TB is) and that seems to mix well with SAP HANA.

Another reason is licensing. LPAR partition is considered hard partitioning for Oracle databases, which makes licensing much easier and, in many configurations, also more cost-effective. [2]

Then there are several RAS features. Think of: if one core of a processor in a x86 server dies, your server dies. This is not the case in the IBM Power environment. These days many customers are happy with horizontal redundancy, but not all are equal.

[1] https://community.sap.com/t5/technology-blog-posts-by-member...

[2] https://oraclelicensingexperts.com/oracle-licensing-virtuali...

sillywalk a day ago | parent | next [-]

Nitpick: it's no longer iSeries, it's the unsearchable IBM i now. I believe it goes (System/38)->AS/400->AS400e->System i->iSeries->i5->i

> if one core of a processor in a x86 server dies, your server dies. This is not the case in the IBM Power environment.

I believe that having a spare processor core is new to POWER11. EDIT: No. I was wrong.

sllabres a day ago | parent [-]

You are right. I'm not working myself on these systems but they are often still called with their older name here due to the frequent renaming...

Regarding the processor: yes the processor spare is new to the Power11 but features like "Processor Instruction Retry" and "Alternative processor recovery" are older. Here are documents describing the feature for old 8284-22A (S822 with Power8 CPU) [1] or even older 8204-E8A (System Power 550 with Power6 CPU) [2]

[1] https://www.redbooks.ibm.com/redpapers/pdfs/redp5098.pdf (topic 4.3.4 and 4.3.5) [2] https://www.redbooks.ibm.com/redpapers/pdfs/redp4404.pdf

imglorp a day ago | parent | prev [-]

Some are doing model inference.

https://wallaroo.ai/optimizing-ai-inference-and-governance-w...