topic Re: Memory mode of intel pmem in Intel® Optane™ Persistent Memory

Memory mode of intel pmem

soumya-pn — Wed, 21 Apr 2021 07:02:58 GMT

Hi,

Is there a way to disable dram as cache in memory mode so that I can collect performance numbers for pmem.?I want to use only pmem for memory operations to collect some performance numbers in memory mode. Please help.

Thanks,

Soumya.

Re:Memory mode of intel pmem

AdrianM_Intel — Wed, 21 Apr 2021 17:14:29 GMT

Hello soumya-pn,

Thank you for posting on the Intel® communities.

Please allow me some time to check into your question and get back to you.

Regards,

Adrian M.

Intel Customer Support Technician

Re: Memory mode of intel pmem

SteveScargall — Wed, 21 Apr 2021 18:11:00 GMT

@soumya-pn You cannot disable the DRAM cache when the host is configured in Memory Mode. If you want to test the performance of PMem independent from DRAM, you'll need to configure the host in AppDirect. The Quick Start Guide is useful for you to learn the differences between Memory Mode and App Direct, and how to switch between them. There's more detailed information and user guides on https://docs.pmem.io/persistent-memory/ and https://software.intel.com/content/www/us/en/develop/topics/persistent-memory.html. You can watch the Provisioning Persistent Memory in Linux video which covers most of the info you need.