LHC@home

AMD has made significant changes to their CPU architecture which help deliver twice the throughput of their first generation Zen architecture. The major points include an entirely redesigned execution pipeline, major floating point advances which doubled the floating point registers to 256-bit and double bandwidth for load/store units.

https://wccftech.com/amd-ryzen-3000-cpus-7nm-zen-2-first-epyc-rome-q3-2019-launch/

Is this of much use to the LHC projects? I have not seen much comparison between Intel and AMD here.

Very good. It is on my radar for next year, and I wanted a project that could use it.

Best yet that epyc keeps tempting you ...
Perhaps there is a way to get that epyc gaming board after all :D

I am not sure how you feed them with fast enough memory. And the switch fabric (if that is what it uses) introduces latency. That might be OK for a server, but not so great for crunching.
For the price, you could probably get at least two Ryzens, which would also give you an additional PCIe slot. So I think I will pass, but let me know if you get one.

Is this of much use to the LHC projects? I have not seen much comparison between Intel and AMD here.

We do have lots of AMD's here but the only place I have seen comparisons was over at Einstein where we tend to compare CPU's and GPU's quite often. (we have Ryzens here too)

https://lhcathome.cern.ch/lhcathome/cpu_list.php

this list seems to be incomplete, though.
Just out of curiosity, I looked for my 2 AMD Turion - they did not show up, for what reason ever.

BTW: exactly the 2 machines with the Turions are producing these "missing hearbeat" errors once in while. All other PCs with Intel processors don't.
Maybe it's a coincidence, or not.

Very nice. The numbers seem to be more accurate than most such comparisons that I have seen.
They track well with what I see on my Ivy Bridge, Haswell, Coffee Lake, and Ryzen machines. Thanks.

CPU Comparisons by the LHC Project : Hot Topic

AMD Ryzen Threadripper 2990WX 32-Core Processor [Family 23 Model 8 Stepping 2] 13 computers 216.62? cores possibly Dual Socket 4.50 GFlops per core 975.66 GF on CPU
Phenomenal performance.

AMD Ryzen Threadripper 2950X 16-Core Processor [Family 23 Model 8 Stepping 2] 25computers 18.72 cores 5.18per GF core 97.01 GF on cpu

Dev kit would be great! H/T Hyper threading seems to be off on average

AMD Ryzen Threadripper 1950X 16-Core Processor [Family 23 Model 1 Stepping 1] 62 computers 29.03 cores H/T on 4.74 GFlops per core 137.52 GF on CPU

By this comparison H/T Hyper thread seems a great thing on the 1950X & to compare these two chips,(2950X / 1950X) cooling is possibly the issue or Something else ..

https://lhcathome.cern.ch/lhcathome/cpu_list.php

Regards RS

AMD Ryzen Threadripper 2990WX 32-Core Processor [Family 23 Model 8 Stepping 2]
Avg. cores/computer: 205.71

There must be somebody out there running AMD Threadripper samples from next year.




Number of computers?
Should better be called "Number of BOINC clients".
I guess I'm not the only one running more than 1 client on the same computer.

AMD Ryzen Threadripper 2950X 16-Core Processor [Family 23 Model 8 Stepping 2]
Avg. cores/computer: 18.17

18.17 > 16 looks like HT on/off, but only at first sight as
"Avg. cores/computer" should better be called "Avg. # reported cores/BOINC client".
This can be tweaked by at least 2 different client settings.



GFLOPS/core, GFLOPs/computer

If anybody believes in a 2 digit accuracy I suggest to run the BOINC benchmarks
- while the computer is idle/under full load
- while the BOINC client is set to use 1, 2, 3, ..., all available cores
- on different BOINC client versions
- on different OSs
- while we have full moon, half ... (ok, this is not serious)