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rick merritt
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Will you plug flash into your memory bus?
rick merritt   7/30/2013 11:13:27 AM
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Why or why not?  Anyone else trying to enable this?

Sanjib.A
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Re: Will you plug flash into your memory bus?
Sanjib.A   7/30/2013 12:02:53 PM
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Don't know much about the NAND FLASH technology; But the first thought that occurs to me is the numbers of write/erase cycles that could be allowed for a NAND FLASH before it loses its capability for reliable operation. Is that number high enough as compared to DDR SDRAM? If FLASH is written/erased so frequently as like SDRAM how long it will last compared to a SDRAM?

Otherwise it will be great to have NV memory in place of the volatile memory...can get rid of batteries/super caps for implementing battery-backed memory.

ccvv
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Re: Will you plug flash into your memory bus?
ccvv   7/30/2013 1:37:58 PM
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Newer class of NVMs are coming - as a matter of fact, they are already in production - such as Phase Change Memory (PCM) which take the cycling capability of NV memory into millions of cycles.

rick merritt
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Micron link, Msoft is key
rick merritt   7/30/2013 5:23:25 PM
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Here's the link to Micron's plans for NVDIMMs I could not finmd earlier:
2013-02-07Flash will ride DRAM bus in 2014, says Micron
Micron notes support under Windows is key for this approach


rick merritt
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Re: Will you plug flash into your memory bus?
rick merritt   7/30/2013 5:24:25 PM
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@Sanjob: Endurance of flsash relative to DRAM remains an issue though flash chips and their controllers have made significant progess in this area.

rick merritt
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Re: Will you plug flash into your memory bus?
rick merritt   7/31/2013 10:30:49 AM
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@ccvv: Yes it will be facinating to see which of the array of new contenders takes over--or maybe we will wind up with a much more diverse world in memories.

an_m
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Re: Will you plug flash into your memory bus?
an_m   8/1/2013 2:48:02 PM
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Hay.

  if we have the programs stored in flash on the same bus as the dimm,

     then we dont need to spend all that time moving executable blocks  from drive to memory to run them, execute in place.

'just' need the code to know how to execute in place and only write to the flash when needed,

now that WILL speed things up, 

sounds fantastic,

 

rick merritt
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Re: Will you plug flash into your memory bus?
rick merritt   8/6/2013 9:53:54 PM
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@an_m: You got it, and I suspect that's just one of many implicaitons people will be discovering. There's a lot of new software to be written.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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