Re: [RFC] Memory Tiering

2019-10-17 Thread David Hildenbrand
On 17.10.19 19:07, Verma, Vishal L wrote: On Thu, 2019-10-17 at 07:17 -0700, Dave Hansen wrote: On 10/17/19 1:07 AM, David Hildenbrand wrote: Very interesting topic. I heard similar demand from HPC folks (especially involving other memory types ("tiers")). There, I think you often want to let

Re: [RFC] Memory Tiering

2019-10-17 Thread Verma, Vishal L
On Thu, 2019-10-17 at 07:17 -0700, Dave Hansen wrote: > On 10/17/19 1:07 AM, David Hildenbrand wrote: > > Very interesting topic. I heard similar demand from HPC folks > > (especially involving other memory types ("tiers")). There, I think > > you often want to let the application manage that. Bu

Re: [RFC] Memory Tiering

2019-10-17 Thread Dave Hansen
On 10/17/19 1:07 AM, David Hildenbrand wrote: > Very interesting topic. I heard similar demand from HPC folks > (especially involving other memory types ("tiers")). There, I think > you often want to let the application manage that. But of course, for > many applications an automatic management mi

Re: [RFC] Memory Tiering

2019-10-17 Thread David Hildenbrand
On 16.10.19 22:05, Dave Hansen wrote: The memory hierarchy is getting more complicated and the kernel is playing an increasing role in managing the different tiers. A few different groups of folks described "migration" optimizations they were doing in this area at LSF/MM earlier this year. One

[RFC] Memory Tiering

2019-10-16 Thread Dave Hansen
The memory hierarchy is getting more complicated and the kernel is playing an increasing role in managing the different tiers. A few different groups of folks described "migration" optimizations they were doing in this area at LSF/MM earlier this year. One of the questions folks asked was why aut