On 01/05/2018 03:53 PM, Lew Wolfgang wrote:
On 01/05/2018 10:07 AM, Mark Hounschell wrote:
On 01/05/2018 10:30 AM, Marcus Meissner wrote:
Hi,
While a performance hit will likely be there, it is hard to say how big it will be. It really depends on the workload.
Ciao, Marcus
I am still unclear. Will all this all affect performance on my new AMD Ryzen processor?
How has your Ryzen been working for you, Mark? I've been thinking of replacing my 10-year old HP desktop containing an Intel Core(TM)2 Quad CPU. I've used bunches of Opterons in decades past and wouldn't mind ditching Intel again. Are you running 42.3 on it? Any problems?
I am running 42.3 on it. There were some install issues. Simple to get around. Be sure to disable the IOMMU in the bios, then mem=4096M on the kernel command line at install time. The dist 4.4 kernel has IOMMU bugs in it and most hardware (at least all I've used) can do DAC properly so if ya don't limit your mem to < 4GB you will have issues. Once installed and updated you "should" be able to turn the IOMMU back on and get rid of the mem=4096M cmdline option. I can't say that for sure because I don't run the DIST kernels. I run the latest from kernel.org. I just don't know if the latest SuSE kernel has the IOMMU fixes in it or not. You will need an IOMMU if running 4GB+ memory. Be warned about the Ryzens though. There is a hardware "segfault" issue they discovered by doing something like building a kernel with "make -j16". I got mine back in Nov and had to RMA it. They sent me a new one fairly quick because they KNEW about the issue. Date codes after week 21 of 2017 should be good to go. Other than that I'm really happy with it. It is a AMD Ryzen 7 1700X. Mark -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org