A couple of things; 1) The Zen core has 100% more IPC potential than the Excavator core, as can be seen in the block diagram of the Zen core which AMD released quite a long time ago. 2) I built an Excavator based PC and I ran the Blender benchmark with the Ryzen graphic that AMD provided on...
Yes I suppose the mix of instructions may be different for the Linux version, depending on compiler options. Strange that the Windows version is that much slower. gg Microsoft.
That seems pretty low. That's about what I get my Skylake i5 without HT. My Ivy Bridge laptop that I'm running on right now was doing ~1.6 IPC as measured by PerfMonitor2.
I guess my first question would be are you running in a VM? In that case the performance counters might also be...
If true, then I've underestimated Broadwell IPC by a few points; it should be 2.21 (identical to Zen) instead of 2.15. But if that were true, Broadwell-E would have finished the Blender benchmark in 34.82 seconds, a full 1/3rd of a second faster than Zen. If you watch the recording, it was...
Thanks for that. Not sure but I think that's a Haswell generation i5, am I right? Haswell being 22nm and Broadwell being 14nm IIRC.
I have been trying to calculate what I think would be the IPC of Broadwell-E and my (ahem.. work-in-progress) prediction is currently @ 2.15 IPC, just a smidge...
Granted, its not possible to verify my findings because the software isn't public and therefore you just have to take my word for it. But to your point which is to say that your facts have been verified, it is not to my knowledge that anybody has ever measured and published the IPC of any these...
The math only doesn't add up if AMD lied; that is to say, if the benchmark was not in fact 150 samples but something else much smaller-- which is entirely possible given that they've already blundered the Blender file once already. Otherwise you're just arguing against math.
2nd video is up; it shows the exact IPC of an Intel Skylake processor running the same test. Spoilers:
Skylake IPC is 1.35 (without HT), just a smidge slower than my Ivy Bridge Xeons with Hyper-threading at 1.59.
The Core i5 Skylake finished the benchmark in 2:08
Provides solid confirmation...
Hi guys,
I'm working on a program that measures core IPC on the processor in real time and I thought it would be an interesting exercise to extrapolate Zen's IPC based on the Blender benchmark AMD presented at their New Horizon demo last week. So I made this Youtube video...
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