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MMS_AT replied to the thread Discussion Zen 5 Architecture & Technical discussion.And what needs fixing? CCD to CCD latency? Was anyone able to correlate poor performance in this synthetic test with impact on any...
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MMS_AT replied to the thread Discussion Intel Meteor, Arrow, Lunar & Panther Lakes Discussion Threads.R24 is memory subsystem dependant what makes it different to R23. I suggest checking out Chips&Cheese review of the benchmark. AT is...
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MMS_AT replied to the thread Discussion Zen 5 Architecture & Technical discussion.We would need an AMD engineer to answer that question. To the best of my knowledge, there is one register file for each domain. We don't...
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MMS_AT replied to the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000).Wasn't this assuming so OS side patches, or something like that, I remember in footnotes they somehow alluded to tuned software for the...
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MMS_AT replied to the thread Discussion Zen 5 Architecture & Technical discussion.No. You should read this: "We are claiming some instructions have best case latency of 1 cycle but your standard latency test might...
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MMS_AT replied to the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000).Kraken was so far supposed to be 4 classic 4 dense, has something changed?
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MMS_AT replied to the thread Discussion Zen 5 Architecture & Technical discussion.The Zen 5 Software Optimization Guide contains also an excel file listing instruction latencies. In there there is also a Notes sheet...
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MMS_AT replied to the thread Question CPUs for shared memory parallel computing.Original quote with wider context: Posting just for reference purposes;)
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MMS_AT reacted to LightningZ71's post in the thread Question CPUs for shared memory parallel computing with
Like.
I will reierate my earlier suggestion: before you drop a bunch of money on this project, use tools like PerfMon to profile the behavior... -
MMS_AT replied to the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000).I was looking up AT review of Skylake before posting;) Haven't calculated the percentage but the bars looked within 5% range. Anyway my...
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MMS_AT replied to the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000).The issue is that IPC might be misleading and not exactly what people are looking for. For example in Zen4 case, and avx512 vs avx2, you...
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MMS_AT replied to the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000).But weren't people already doing that when comparing IvyBridge to Skylake?
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MMS_AT reacted to Jan Olšan's post in the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000) with Like.
No, it's +7-9 % over Zen 4 (talking only about games). The lowest the article gives is +6 to +8 % at equal memory speed, but that is...
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MMS_AT reacted to majord's post in the thread Discussion Intel Meteor, Arrow, Lunar & Panther Lakes Discussion Threads with Like.
This really makes no sense. If I could do all the work I can do my desktop, on a thin and light laptop , why wouldn't I want that.. ST...
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MMS_AT reacted to Nothingness's post in the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000) with Like.
I don't think the gcc guys know more than us. They base their changes on the optimization guide.
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