Ryzen help

Prime95 · 2018-03-19, 21:12

Are there any Ryzen owners willing to help (run benchmarks) someone working on theories for optimal Ryzen coding techniques?

I've worked with this person in the past and he has provided useful insights into past AMD architectures. Whether any of his findings will prove at all useful is not known. Like Intel chips, Ryzen is memory bound so code optimizations are likely to produce only minimal improvements.

PM me with you email address if you are interested and I will forward your contact info.

airsquirrels · 2018-03-20, 02:42

Shoot me an email, I’ve got a few variants.

Prime95 · 2018-03-20, 05:03

Thanks

kruoli · 2018-03-20, 19:23

Since Threadripper is a "Double Ryzen", is that interesting, too? If yes, I can help.

joblack · 2018-05-13, 19:16

Any news on Ryzen optimizations? I am thinking about upgrading from an old Intel CPU as well.

VictordeHolland · 2018-05-13, 19:52

About a year ago the situation wasn't looking so good for Ryzen 7 in terms of Prime95 performance (moslty due to their halved AVX2 throughput):

http://mersenneforum.org/showpost.ph...&postcount=753

If your primary goal for a new PC is running Prime95, than a Skylake/Kabylake/Coffee Lake will perform considerably better.

Prime95 · 2018-05-13, 20:26

Quote:

Originally Posted by VictordeHolland

If your primary goal for a new PC is running Prime95, than a Skylake/Kabylake/Coffee Lake will perform considerably better.

I believe both are limited by memory bandwidth. Just remember to compare 8-core Ryzens to 4-core Intels.

kladner · 2018-05-13, 23:10

More memory channels (4 instead of 2), and the fastest RAM one can lay hand on does a lot to unleash the true potential of current high end CPUs. With 2 memory channels, 3200 MHz is a good aim point for RAM.

I dropped out from running AMD CPUs after many years, when I got my current system. Ryzen was in its early versions, and Kaby Lake had not quite made it to the stores. I am happy with the 6700K I am running

I have always wanted AMD to hang in there, at least to keep pressure on Intel. I would love to see a genuine breakthrough architecture from AMD, to really shake the market up.

Mark Rose · 2018-05-14, 00:57

Quote:

Originally Posted by kladner

I have always wanted AMD to hang in there, at least to keep pressure on Intel. I would love to see a genuine breakthrough architecture from AMD, to really shake the market up.

That's what the Zen architecture is. It doesn't match Intel instructions-per-clock, but it's much cheaper to manufacture. It's why Intel has suddenly introduced 6 (and rumoured 8 core) chips into their mainstream product line. It's why Intel's HEDT chip went from 10 cores to 18, to get ahead of the 16 cores in Threadripper. And Intel still doesn't have an answer to the 32 core Epyc CPUs.

Prime95/mprime is one of the very few workloads where Ryzen isn't competitive. But the price of a quad core Intel has dropped dramatically since Ryzen came out. Zen has shaken up the market indeed.

kladner · 2018-05-14, 04:06

I guess you're right. Perhaps I'm just sour because things started happening right when I abandoned the AMD ship.

2018-03-19, 21:12	#1
Prime95 P90 years forever! Aug 2002 Yeehaw, FL 7,433 Posts	Ryzen help Are there any Ryzen owners willing to help (run benchmarks) someone working on theories for optimal Ryzen coding techniques? I've worked with this person in the past and he has provided useful insights into past AMD architectures. Whether any of his findings will prove at all useful is not known. Like Intel chips, Ryzen is memory bound so code optimizations are likely to produce only minimal improvements. PM me with you email address if you are interested and I will forward your contact info.

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2018-03-20, 02:42	#2
airsquirrels "David" Jul 2015 Ohio 11×47 Posts	Shoot me an email, I’ve got a few variants.

2018-03-20, 05:03	#3
Prime95 P90 years forever! Aug 2002 Yeehaw, FL 7,433 Posts	Thanks

2018-03-20, 19:23	#4
kruoli "Oliver" Sep 2017 Porta Westfalica, DE 2×241 Posts	Since Threadripper is a "Double Ryzen", is that interesting, too? If yes, I can help.

2018-05-13, 19:16	#5
joblack Oct 2008 n00bville 5²×29 Posts	Any news on Ryzen optimizations? I am thinking about upgrading from an old Intel CPU as well.

2018-05-13, 19:52	#6
VictordeHolland "Victor de Hollander" Aug 2011 the Netherlands 2³·3·7² Posts	About a year ago the situation wasn't looking so good for Ryzen 7 in terms of Prime95 performance (moslty due to their halved AVX2 throughput): http://mersenneforum.org/showpost.ph...&postcount=753 If your primary goal for a new PC is running Prime95, than a Skylake/Kabylake/Coffee Lake will perform considerably better.

2018-05-13, 23:10	#8
kladner "Kieren" Jul 2011 In My Own Galaxy! 2×3×1,693 Posts	More memory channels (4 instead of 2), and the fastest RAM one can lay hand on does a lot to unleash the true potential of current high end CPUs. With 2 memory channels, 3200 MHz is a good aim point for RAM. I dropped out from running AMD CPUs after many years, when I got my current system. Ryzen was in its early versions, and Kaby Lake had not quite made it to the stores. I am happy with the 6700K I am running I have always wanted AMD to hang in there, at least to keep pressure on Intel. I would love to see a genuine breakthrough architecture from AMD, to really shake the market up.

2018-05-14, 04:06	#10
kladner "Kieren" Jul 2011 In My Own Galaxy! 2×3×1,693 Posts	I guess you're right. Perhaps I'm just sour because things started happening right when I abandoned the AMD ship.