eachus

Robert Iredell Eachus

eachus’ Activity

Mon May 2

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 8:16 PM

Re: Long time no see. What's coming on the horizon ?

Just to keep things relevant, what is the current consensus for nodes after 7nm? When will we abandon pure silicon?
Oh and EUV is still in the future!! ;)


On EUV, not really. It has not happened for silicon production nodes, but [more]

Mon Apr 25

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 1:11 AM

Re: AMD licenses x86 to Chinese JV

Sigh, you haven't been paying attention.

I don't know how old you are, but I have been watching (and fighting) these issues for decades. Do you remember the dmr backdoor in Unix?*

This is why you need both high-level language [more]

Sun Apr 24

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 1:51 PM

Re: AMD licenses x86 to Chinese JV

Your whole post is just way off track, with respect to the JV. While everything you posted might be true, none of it is applicable to the current news.

I think we are in violent agreement. Designing new or modified CPUs does [more]

Fri Apr 22

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 10:55 AM

Re: AMD licenses x86 to Chinese JV

Patents expire, and all the original x86 patents are gone. The various ISAs cannot be protected by copyright, no matter how lawyers wiggle. (Yes, they wiggle. For example, claiming that even if the ISA can't be copyrighted, the (ASCII) op codes [more]

Thu Apr 21

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 2:30 PM

Re: GDDR5x sampling...

At some point there will be a Fiji follow-on, but it may end up like nVidia's Pascal with no consumer version before next year.

I tried to squeeze too many thoughts in not enough words. What I meant to say was that even if AMD [more]

Sat Apr 16

NL

Boards Post

eachus posted to the Advanced Micro Devices board. 7:49 PM

HP's "The Machine"

The discussion about HP's Persistent Memory lead me to look up what was happening with ReRAM. I found a lot, which still left ReRAM as a specialty product for low-power SoC applications. (The CPU and memory can sit not drawing power, and instantly [more]

NL

Boards Post

eachus posted to the Advanced Micro Devices board. 11:11 AM

Polaris vs. Pascal

Interesting article, with real data, comparing AMD and nVidia GPUs (and drivers) in DX12: http://seekingalpha.com/article/3965293-amd-bombs-nvidia

Before you rush off to [more]

Tue Apr 12

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 11:03 AM

Re: HP's "Persistent Memory"

Note that when non-volatile memory (most likely ReRAM) becomes the norm for systems--magnetic core memory was the last time--new operating systems will be needed. Why? The same problem you have to address if you want NVRAM to be useful. What should [more]

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 10:56 AM

Re: HP's "Persistent Memory"

1. Other companies, including major storage companies, already offer NVRAM-N options. (Some require external supercapacitors.) There is also NVRAM-F, which is really flash memory with a small DRAM cache. The big difference is that NVRAM-F is for [more]

Thu Apr 7

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 7:12 PM

Re: GDDR5x sampling...

Provide one single link that substantiates your claim.

Are you arguing that I had an extra comma? If not how about the article you linked to:

In the meantime, with OEM Tesla P100-equipped systems not set to ship until Q1 [more]

Wed Apr 6

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 7:47 PM

Re: GDDR5x sampling...

Nvidia is launching Pascal (consumer version) this summer. Why do you believe differently?

Umm. Careful. nVidia said today that the GP100 chip, which uses HBM2 memory, won't reach consumer products before next year. This article: [more]

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 2:37 PM

Re: GDDR5x sampling...

Two interesting pieces of information today. First nVidia introduced Pascal, in the form of the GP100. The picture shows 8 HBM2 stacks. However, it is not going to ship in consumer products until next year. AMD has a new FirePro card with two [more]

Mon Apr 4

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 12:28 PM

Re: GDDR5x sampling...

I can't forget a part that will never exist. HBM1 & HBM2 both require 1024 pins. 2x HBM1 would require 2048 pins. So either a big increase in the GPU pin count, bank switching on the interposer, or some other special implementation. I cannot [more]

Sun Apr 3

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 10:27 AM

Re: Zen benchmarks leaking?

You know me, the first thing I look at is the memory. ;-) In this case it is worth noting that the AMD Summit Ridge is running with two memory DIMMs, four would be much better.* The best comparison then is the i7-6700K also with dual [more]

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 9:40 AM

Re: GDDR5x sampling...

Counter-prediction: Polaris (4xx) will be DDR3 & GDDR5(x). No HBM1 or 2, no DDR4.

First, moving from GDDR5 to GDDR5x provides twice the bandwidth or more. Well, I don't expect anything above 12 GHz to start, and 10 GHz is more [more]

Thu Mar 31

NL

Boards Post

eachus posted to the Advanced Micro Devices board. 10:04 AM

GDDR5x sampling...

http://www.anandtech.com/show/10193/micron-begins-to-sample-...

In theory, GDDR5x will have twice the bandwidth per pin of GDDR5. In practice, the early [more]

Wed Mar 16

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 5:32 PM

Re: Radeon Pro Duo

Is there a market for this card? Yes, but it is not a consumer (gaming) market. AMD's target seems to be rendering farms. What rendering farms? Didn't they die off with the Dodo? Not really, a seismic data processing facility has a use case where [more]

Tue Mar 15

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 3:10 PM

Re: AMD GPU roadmap reveals

Where does this leave Polaris? Vega for a year or less from now doesn't leave much time for development. In fact if Vega included new GPU chip designs (compared to Polaris) they would need to be sampling already. Different interposer in [more]

Fri Mar 11

NL

Boards Post

eachus replied to the Advanced Micro Devices board. 11:26 PM

Re: CUDA code can be compiled to run on AMD GPU

I'm glad to see someone finally doing this...For legal* reasons AMD couldn't do it themselves, but as the article indicates it is a fairly trivial task if you already have a compiler with a GPU backend. Could I do it in a week? Possible, but very [more]

Thu Mar 3

NL

Boards Post

eachus posted to the Advanced Micro Devices board. 3:41 PM

New old CPU and APU products

AMD announced a new APU and a new CPU with higher speeds and a fancy stock cooler. Reading the press release, you would think that it is all about the coolers. Fortunately I've found a blog entry which has details for you like number of cores and [more]

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