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Thread: Intel Optane DC Persistent Memory launched

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    Intel Optane DC Persistent Memory launched

    Intel Ethernet 800 Series adapters and the Wi-Fi 6 AX200 WLAN card are unveiled too.
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    Re: Intel Optane DC Persistent Memory launched

    is AMD in trouble after the launch of Optane DC tech?

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    Re: Intel Optane DC Persistent Memory launched

    Quote Originally Posted by lumireleon View Post
    is AMD in trouble after the launch of Optane DC tech?
    Not really, Optane still doesn't compete with memory and is only really suitable for specific use cases. I still see extreme value in a database running in ECC NVRAM because if there is a power issue the database will persist.

    Sure it can contain massive data sets but the IO latency means any rapid access data for crunching is limited.

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    Re: Intel Optane DC Persistent Memory launched

    Quote Originally Posted by Tabbykatze View Post
    Not really, Optane still doesn't compete with memory and is only really suitable for specific use cases. I still see extreme value in a database running in ECC NVRAM because if there is a power issue the database will persist.

    Sure it can contain massive data sets but the IO latency means any rapid access data for crunching is limited.
    I can see the benefits of not having to load or unload ram modules, having that information already loaded in and persistent is probably of some benefit. I guess it depends on the latency of accessing the Optane DC memory and if that is comparable to standard DRAM latency. Delving through a few links it's not something Intel is advertising openly.

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    Re: Intel Optane DC Persistent Memory launched

    Quote Originally Posted by Iota View Post
    I can see the benefits of not having to load or unload ram modules, having that information already loaded in and persistent is probably of some benefit. I guess it depends on the latency of accessing the Optane DC memory and if that is comparable to standard DRAM latency. Delving through a few links it's not something Intel is advertising openly.
    Optane latency is still an order of magnitude slower than RAM and they keep that quite close to their chest with no official numbers. Basically it cannot replace memory but it is an excellent middle ground between ram disk and fast storage for tiering to memory. It's better than holding an entire DB in memory for resiliency but worse for speed of access.

    For example, average latency range for memory in DDR1-4 has been around 3-90ns taking into account total cycle and CAS latency across first, fourth and eighth word. According to PCPer, latency overall for Optane is around 350ns which is amazing vs NVMe and is a fantastic leap but not quite replacing just yet: https://www.pcper.com/news/Storage/I...cy-Closer-DRAM

    I feel NVRAM will be the new thing over the next few years and Optane/competitor will go through the DDR 1, 2, 3, 4 latency decreases over time.
    Last edited by Tabbykatze; 03-04-2019 at 05:03 PM.

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    Re: Intel Optane DC Persistent Memory launched

    Quote Originally Posted by Tabbykatze View Post
    I feel NVRAM will be the new thing over the next few years and Optane/competitor will go through the DDR 1, 2, 3, 4 latency decreases over time.
    It was an interesting promise, but I think if they were going to get it working they would have by now.

    Databases are supposed to fit in RAM and then they just have to write updates out to storage. You have to write updates to storage anyway, or you get the worry of if the mainboard dies how do you know you can plug the Optane sticks into another board and get the data back? I have difficulty trusting onboard RAID controllers for that reason.

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    Re: Intel Optane DC Persistent Memory launched

    Quote Originally Posted by DanceswithUnix View Post
    It was an interesting promise, but I think if they were going to get it working they would have by now.

    Databases are supposed to fit in RAM and then they just have to write updates out to storage. You have to write updates to storage anyway, or you get the worry of if the mainboard dies how do you know you can plug the Optane sticks into another board and get the data back? I have difficulty trusting onboard RAID controllers for that reason.
    I think there will be a crux point where you may be able to do that, replace the necessary hardware and you will be able to just boot back up into the normal expected state and continue where you left off. Like a battery backup for queue ram on a RAID card finishing it's writes when power is restored.

    I also don't trust onboard RAID controllers, for anything sensitive it has to be a separate RAID with BBU.

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