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7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

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Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#71

Post by ianai »

leemailll wrote: post #62
pmjordan wrote: post #52

Earlier quoted context omitted.

Correct, the built-in drivers only cover the "Kepler" architecture, as that was the last one that Apple used in a Mac. The 3rd party Nvidia drivers which support more modern GPUs are only offered up to macOS 10.13 High Sierra. The technical background for this is that Metal and OpenGL acceleration requires the GPU driver bundle to be loaded into a process's address space. (effectively a dynamic library) With 10.14, A…

Someone on reddit suspect apple’s stance against Nvidia in this driver signing carnage is because they are not happy with Nvidia about cards in MacBook Pro

What did nvidia do?

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#73

Post by Tuna-Fish »

ksec wrote: post #46
reitzensteinm wrote: post #9

Note that the 1P variant costs only $4,955, or under $80 per core. The consumer chips cost roughly $50/core, making this the flattest ramp I can personally remember.

That is the brilliance of Chiplet strategy. Those 74nm 7nm Die are extremely cost effective. ( For reference they are even smaller than the SoC used in iPhone ) The 14nm I/O die ( 400mm2 ) seems to be most expensive part. I wonder what cost improvement could be done in that area. And Note: That 5K CPU has 256 MB of L3 Cache. May be I could Run the OS not in RAM, but in Cache.

Note regarding Note: It actually has 16*16MB cache. The L3 is split into 16MB segments per CCX, and organized as a victim cache taking lines evicted from the 4 local L2 caches. That is, a single core cannot ever write to more than 16.5MB of cache.

So there's not really any way to run system out of only cache, outside the tiny examples of early boot where all CPUs do this.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#74

Post by Tuna-Fish »

mhh__ wrote: post #70
reitzensteinm wrote: post #26

Earlier quoted context omitted.

Games!? No Man's Sky had trouble with SSE 4.1 being a requirement, and ended up patching it out... let alone AVX, AVX2, or AVX512. Typically, games won't take advantage of new instruction sets until it's ready to be a minimum requirement, as otherwise you need to maintain two code paths, the benefit of which is only to be speeding up execution on what are already the more powerful CPUs. What games can benefit from AV…

Some LLVM compilers produce code that (possible with GCC too) can jit itself on a per function on first execution e.g. -march=native so no branches required. This requires good planning of the game, i.e. this reduces inlining so one needs to be careful with putting the important bits in the JITted code

Practically no-one in the industry uses this, or the icc system that builds multiple versions of functions in the same exe.

It might work in theory, but it increases the cost of testing too much for it to be worth it.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#75

Post by Tuna-Fish »

chx wrote: post #58
fabian2k wrote: post #41

Earlier quoted context omitted.

Where do you get the $1,800 price? Intel says the recommended price is around $10,000: https://ark.intel.com/content/www/us/en/ark/products/192478/...

OP said "QS" these are grey market chips, QS means Qualification Sample, Intel sends them to various manufacturers to test with motherboards and then they leak into the grey market. They are not retail so frequency and other characteristics might differ -- but even their stability might not be as high as a retail one. Although QS is usually better at this, it's ES (Engineering Sample) which can be very dicey.

Black market, not grey market. QS are loaned on terms that explicitly prohibit resale. If you buy them, you are purchasing stolen goods.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#76

Post by ksec »

Tuna-Fish wrote: post #73
ksec wrote: post #46

Earlier quoted context omitted.

That is the brilliance of Chiplet strategy. Those 74nm 7nm Die are extremely cost effective. ( For reference they are even smaller than the SoC used in iPhone ) The 14nm I/O die ( 400mm2 ) seems to be most expensive part. I wonder what cost improvement could be done in that area. And Note: That 5K CPU has 256 MB of L3 Cache. May be I could Run the OS not in RAM, but in Cache.

Note regarding Note: It actually has 16*16MB cache. The L3 is split into 16MB segments per CCX, and organized as a victim cache taking lines evicted from the 4 local L2 caches. That is, a single core cannot ever write to more than 16.5MB of cache. So there's not really any way to run system out of only cache, outside the tiny examples of early boot where all CPUs do this.

Thanks. Didn't come to my mind when I was writing that. So I stand corrected.

I wonder if one day we put even more cache in the I/O Die. Or even Stacked DRAM directly on top of it.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#77

Post by mhh__ »

Tuna-Fish wrote: post #74
mhh__ wrote: post #70

Earlier quoted context omitted.

Some LLVM compilers produce code that (possible with GCC too) can jit itself on a per function on first execution e.g. -march=native so no branches required. This requires good planning of the game, i.e. this reduces inlining so one needs to be careful with putting the important bits in the JITted code

Practically no-one in the industry uses this, or the icc system that builds multiple versions of functions in the same exe. It might work in theory, but it increases the cost of testing too much for it to be worth it.

I'm just saying that it exists.

I saw it the other day and was amazed I hadn't seen it before.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#78

Post by dijit »

rolleiflex wrote: post #61
leemailll wrote: post #59

Earlier quoted context omitted.

I still will use adobe apps and the main reason is my university offer them for free. But I agree adobe’s subscription is an overkill for personal use

That's Adobe's way of getting you hooked. It was the same for me at my college. It took me a long time to port my muscle memory to Sketch. If I had an advice to give to my college self, I would advise not even starting with Adobe: if you're a designer and use their tools, the tools you need to make money with isn't even available for sale, you can only rent. So you might end up in a place where Adobe jacks up the pri…

FWIW that’s exactly why Microsoft office and windows is so prolific, it’s what people know from school so it’s not even a conversation on switching.

Even if Microsoft is gauging companies with licenses.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#79

Post by jdietrich »

tambourine_man wrote: post #66
rolleiflex wrote: post #54

Earlier quoted context omitted.

I'm actually a designer, but I stopped using Adobe a very long time ago for unrelated reasons — when they switched to the subscription model. For that reason I didn't even try to run them. I do realise that might be an untenable position for someone in Hollywood since FCPX is not a match for Premiere / After Effects at that level, however, there are plenty of other things that do the job of Photoshop and Illustrator,…

Unfortunately, there’s no match for Photoshop for serious image editing.

Affinity Photo isn't a match for Photoshop, but it's remarkably close at a fraction of the cost.

https://affinity.serif.com/en-us/photo/

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#80

Post by jdietrich »

ianai wrote: post #71
leemailll wrote: post #62

Earlier quoted context omitted.

Someone on reddit suspect apple’s stance against Nvidia in this driver signing carnage is because they are not happy with Nvidia about cards in MacBook Pro

What did nvidia do?

There was a lawsuit and a recall program because of the premature failure of Nvidia GPUs in 2008 to 2010 MBPs.

https://www.macworld.com/article/1154456/nvidiagpu-macbookpr...

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