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I found this article about Power10's absurd levels of I/O, memory bandwidth and addressable memory interesting. Something that would be cool is a comparison of the different features some of these architecture had and what workloads it made them good/bad at. For instance, what made SPARC worth choosing over other contemporary options, that kind of thing.
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Jun 23, 2021 21:50
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BobHoward posted:You even see people making the same mental mistakes. Back in the day, people used to scoff at the idea that x86 could take on the workstation and server markets. Recently, we've seen many similar opinions about Arm; people assume there's some intrinsic property which makes x86 faster. Apple's already exploiting the fact that it's easier to go wide with the ARM ISA. I get the impression that ARM's vector instructions are better thought out than the Intel equivalents. Is there a legitimate argument to be made that ARM CPUs are actually likely to overtake x86 in performance within a few years?
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Jun 28, 2021 21:26
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Why settle for the 32MB of L3 cache per chiplet that AMD offers when you could have 32MB of L2 per core instead? https://www.anandtech.com/show/16924/did-ibm-just-preview-the-future-of-caches (Note: you only get virtual L3/L4) Another article says that the CPU will have an on-board 6TFLOP AI accelerator. The claimed benefit is that instead of giving each core AVX512 instructions, you concentrate all that logic into one accelerator which any core can access.
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Sep 3, 2021 08:57
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Looks like Apple isn't the only producer of super-wide ARM processors. https://twitter.com/aschilling/status/1466436451361603596 https://twitter.com/aschilling/status/1466436457699201024 This pic in particular is interesting. The design is the opposite of Epyc's, a big compute die surrounded by many IO dies. That must be much better for inter-core latency. 
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Dec 3, 2021 22:53
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PBCrunch posted:It will be a big box you can put a Mac Studio inside of. When you want an upgrade you pull out the old Mac Studio and put in a new one. 100%, easier to replace the entire module than compromise the memory perf by using DIMMs.
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Mar 10, 2022 20:57
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Ars did a 3 part series on the history of ARM. The last part covers what should be fairly familiar territory (mobile market explosion), but I found the earlier ones very interesting: https://arstechnica.com/gadgets/2022/09/a-history-of-arm-part-1-building-the-first-chip/ https://arstechnica.com/gadgets/2022/11/a-history-of-arm-part-2-everything-starts-to-come-together/ https://arstechnica.com/gadgets/2023/01/a-history-of-arm-part-3-coming-full-circle/
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Jan 18, 2023 09:35
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BobHoward posted:RISC-V hasn't helped China at all. It's not even a very good ISA, but more importantly, ISA is the least important thing here. x86 may be sitting a bit uneasy on its throne, but for now it still rules the PC world despite being an objectively bad ISA design. What does and does not contribute to a good ISA design? Is it the inevitable fate of any sufficiently old ISA to accumulate enough cruft to bog it down?
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Dec 24, 2023 17:20
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What are some worthwhile sites for written articles these days?
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Jan 14, 2024 10:51
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Hasturtium posted:That is a huge bummer but I appreciate you telling me. I didn't realize their problems were quite that massive. They're not (scroll down to the last update). They cut 20% of jobs across all functions to focus on their key markets. They have funding for years so they're not about to collapse.
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Feb 21, 2024 09:41
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BlankSystemDaemon posted:David Chisnall has some really good articles for the association of computing mastery, including when he (in)famously wrote about how C is not a low-level language and how there's no such thing as a general-purpose processor - both of which sparked quite a lot of conversation. Are those conversations collected or summarised somewhere?
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Feb 25, 2024 12:17
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