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Search: Posts Made By: Simbelmynė
Forum: Hardware January 5, 2018, 16:41
Replies: 22
Views: 1,935
Posted By Simbelmynė
Sweet! So the speed advantage increased to almost...

Sweet! So the speed advantage increased to almost 150% over the Threadripper. I guess I need to get my hands on a dual Epyc system soon :D

Any information about Zen+ that is due Q1 this year?...
Forum: Hardware January 4, 2018, 10:20
Replies: 22
Views: 1,935
Posted By Simbelmynė
Oh, I was ;) But at the same time I became...

Oh, I was ;)

But at the same time I became interested in testing a larger system on my different setups. I guess the dual Epyc would complete the test in less than 15 minutes?
Forum: Hardware January 4, 2018, 09:09
Replies: 22
Views: 1,935
Posted By Simbelmynė
Running at N=100 (one million cells): 1950X:...

Running at N=100 (one million cells):

1950X: 29m16s
7940X: 37m39s

The AMD system is 29% faster. At N=50 (above) the AMD system is 36% faster, so the gap becomes smaller, but it is still...
Forum: Hardware January 3, 2018, 14:35
Replies: 22
Views: 1,935
Posted By Simbelmynė
Fantastic, thank you! So the dual Epyc is...

Fantastic, thank you!

So the dual Epyc is twice as fast as the Threadripper in this benchmark! It is interesting to note that the 1950X is actually (slightly) faster than the 7940X even at 14...
Forum: Hardware January 3, 2018, 09:26
Replies: 22
Views: 1,935
Posted By Simbelmynė
Ok, so I have realized that the test case is most...

Ok, so I have realized that the test case is most likely flawed. After testing all currently stable kernels I got very inconclusive results.

The compiler itself seems important (but not always, on...
Forum: Hardware December 14, 2017, 06:52
Replies: 22
Views: 1,935
Posted By Simbelmynė
OK, thanks! I will try out the 4.14-3-1 kernel...

OK, thanks! I will try out the 4.14-3-1 kernel and see if that helps the Threadripper.

How about the results. Do you think this benchmark is bandwidth limited for 1 thread? It doesn't seem to be...
Forum: Hardware December 13, 2017, 17:11
Replies: 22
Views: 1,935
Posted By Simbelmynė
OK so I have done some more testing (best kernel...

OK so I have done some more testing (best kernel in bold text).

Still the Cavity3d 100, test case from Palabos, single thread.

7600K
Linux Mint 18.3 - approx. 6 msu (kernel 4.10.0)
Ubuntu...
Forum: Hardware December 13, 2017, 08:41
Replies: 22
Views: 1,935
Posted By Simbelmynė
I have an interesting observation. Running...

I have an interesting observation.

Running the Palabos benchmark in a Virtualbox using Ubuntu 17.10 I get 11.6 msu with the 7600k cpu. This is a rather massive improvement from the 5.4 msu I get...
Forum: Hardware December 2, 2017, 08:43
Replies: 22
Views: 1,935
Posted By Simbelmynė
Thank you for the suggestions! I do not run...

Thank you for the suggestions! I do not run calculations on my 7600k, but it is annoying anyway, so I will try to figure out how to solve it ;)


It seems that the Epyc 7301 and 7940X are quite...
Forum: Hardware November 27, 2017, 09:32
Replies: 22
Views: 1,935
Posted By Simbelmynė
I have done some testing with OpenFOAM and it...

I have done some testing with OpenFOAM and it seems that Ubuntu correctly applies turboBoost to increase the frequency of the 7600K CPU. However, CentOS does not appear to apply turboBoost at all to...
Forum: Hardware November 24, 2017, 07:35
Replies: 22
Views: 1,935
Posted By Simbelmynė
Seems reasonable! Yes, did a "make clean"...

Seems reasonable!


Yes, did a "make clean" and "make". At least it was a 2x speed improvement with the new kernel.



No, but after testing this suggestion it is still around 9.5-9.9 msu.
Forum: Hardware November 23, 2017, 13:03
Replies: 22
Views: 1,935
Posted By Simbelmynė
Kernel for new CPUs

Hey,

Tried a 7940X setup today with a fresh CentOS installation. As benchmark I used Palabos (cavity3d)

The performance was abysmal to say the least.

At N=100 the results for 1 thread was...
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