Author Topic: The Cpu King  (Read 8033 times)

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Online blueskull

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Re: The Cpu King
« Reply #25 on: August 27, 2016, 03:37:19 pm »
Blueskull's 22 cores Intel CPU came to mind when I saw this just now:
http://www.orrazz.com/2016/08/researchers-at-princeton-have-built.html
Researchers at Princeton have built an open source 25-core chip that can easily be scaled to create a 200,000-core computer
Researchers want to give a 25-core open-source processor called Piton some serious bite.
The developers of the chip at Princeton University have in mind a 200,000-core computer crammed with 8,000 64-bit Piton chips.

I hate, loathe and distrust Intel enough that nothing they do can impress me anymore.
Open source CPUs on the other hand, are exciting.

The CPU demonstrated in your link is a trend of HPC -- thousands of cores crunching data with minimal communication.
However, Intel/AMD chips are good at general computing -- running tasks which need high memory bandwidth accessible by all cores, or running different tasks at the same time.

Recently I am working on a finite element simulation engine. Despite Gauss-Siedel and SAR methods are well known, and nodal equation of thermal transfer is simple, the meshing is a bit interesting.
When doing non-uniform meshing (dynamic mesh size), it is hard to pack data in a uniform cluster, which means, all SIMD things and GPGPU things won't work because the unaligned memory and conditional memory access.
The same thing applies to your link -- though they can so different tasks on different time, but accessing non-unified memory over several "bridges and hubs" on a remote processor is very inefficient.
If the only desired feature is different task at same time on many cores with minimal cross-core memory access, then Xeon Phi and latest TLP GPGPU devices will work, in fact, Xeon Phi with Omni-path or Pascal with HBM2 should have better same-card cross-core memory bandwidth even than the best Xeon E5.

My understanding of research is academic research groups propose new possibilities to commercial companies, but the final working and fine-tuned products can only be made by commercial companies, usually only a small number of technology dictators.
 

Offline joeqsmith

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Re: The Cpu King
« Reply #26 on: August 28, 2016, 01:28:03 am »
Tried it with the new PC, E5-1650 v4.   1180 cb / 143.93 fps.  It's blinding speed compared with my XP P4 box I had been using.  Writing emails and surfing does not take a lot of CPU power.   :-DD

Getting things to work is a bit of a struggle so far.  Two days and just getting to where I have my hardware is triggering an event in Labview.   Turns an indicator on when the hardware fires an interrupt.  All in Labview this time.   If its not fast enough, I'll get the DDK setup.   
How electrically robust is your meter?? https://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 

Offline Voodoo 6

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Re: The Cpu King
« Reply #27 on: August 28, 2016, 05:41:12 am »
My favorite mpc of all time has to be the Crays.  :-+
 


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