Le 30/12/2017 à 07:58, Matthew Wilcox a écrit :
> On Wed, Dec 27, 2017 at 10:10:34AM +0100, Brice Goglin wrote:
>>> Perhaps we can enlist /proc/iomem or a similar enumeration interface
>>> to tell userspace the NUMA node and whether the kernel thinks it has
>>> better or worse performance charact
On Wed, Dec 27, 2017 at 10:10:34AM +0100, Brice Goglin wrote:
> > Perhaps we can enlist /proc/iomem or a similar enumeration interface
> > to tell userspace the NUMA node and whether the kernel thinks it has
> > better or worse performance characteristics relative to base
> > system-RAM, i.e. new I
Le 22/12/2017 à 23:53, Dan Williams a écrit :
> On Thu, Dec 21, 2017 at 12:31 PM, Brice Goglin wrote:
>> Le 20/12/2017 à 23:41, Ross Zwisler a écrit :
> [..]
>> Hello
>>
>> I can confirm that HPC runtimes are going to use these patches (at least
>> all runtimes that use hwloc for topology discover
On 2017/12/23 6:31, Ross Zwisler wrote:
> On Fri, Dec 22, 2017 at 08:39:41AM +0530, Anshuman Khandual wrote:
>> On 12/14/2017 07:40 AM, Ross Zwisler wrote:
> <>
>>> We solve this issue by providing userspace with performance information on
>>> individual memory ranges. This performance information
On 12/23/2017 03:43 AM, Ross Zwisler wrote:
> On Fri, Dec 22, 2017 at 08:39:41AM +0530, Anshuman Khandual wrote:
>> On 12/14/2017 07:40 AM, Ross Zwisler wrote:
>>> Quick Summary
>>>
>>> Platforms exist today which have multiple types of memory attached to a
>>> single CPU. These disparat
On 12/22/2017 10:43 PM, Dave Hansen wrote:
> On 12/21/2017 07:09 PM, Anshuman Khandual wrote:
>> I had presented a proposal for NUMA redesign in the Plumbers Conference this
>> year where various memory devices with different kind of memory attributes
>> can be represented in the kernel and be used
On Sat, Dec 23, 2017 at 12:57 AM, Dan Williams wrote:
> On Fri, Dec 22, 2017 at 3:22 PM, Ross Zwisler
> wrote:
>> On Fri, Dec 22, 2017 at 02:53:42PM -0800, Dan Williams wrote:
>>> On Thu, Dec 21, 2017 at 12:31 PM, Brice Goglin
>>> wrote:
>>> > Le 20/12/2017 à 23:41, Ross Zwisler a écrit :
>>> [
On Fri, Dec 22, 2017 at 3:22 PM, Ross Zwisler
wrote:
> On Fri, Dec 22, 2017 at 02:53:42PM -0800, Dan Williams wrote:
>> On Thu, Dec 21, 2017 at 12:31 PM, Brice Goglin
>> wrote:
>> > Le 20/12/2017 à 23:41, Ross Zwisler a écrit :
>> [..]
>> > Hello
>> >
>> > I can confirm that HPC runtimes are goi
On Fri, Dec 22, 2017 at 02:53:42PM -0800, Dan Williams wrote:
> On Thu, Dec 21, 2017 at 12:31 PM, Brice Goglin wrote:
> > Le 20/12/2017 à 23:41, Ross Zwisler a écrit :
> [..]
> > Hello
> >
> > I can confirm that HPC runtimes are going to use these patches (at least
> > all runtimes that use hwloc
On Thu, Dec 21, 2017 at 12:31 PM, Brice Goglin wrote:
> Le 20/12/2017 à 23:41, Ross Zwisler a écrit :
[..]
> Hello
>
> I can confirm that HPC runtimes are going to use these patches (at least
> all runtimes that use hwloc for topology discovery, but that's the vast
> majority of HPC anyway).
>
> W
On Fri, Dec 22, 2017 at 08:39:41AM +0530, Anshuman Khandual wrote:
> On 12/14/2017 07:40 AM, Ross Zwisler wrote:
<>
> > We solve this issue by providing userspace with performance information on
> > individual memory ranges. This performance information is exposed via
> > sysfs:
> >
> > # grep
On Fri, Dec 22, 2017 at 08:39:41AM +0530, Anshuman Khandual wrote:
> On 12/14/2017 07:40 AM, Ross Zwisler wrote:
> > Quick Summary
> >
> > Platforms exist today which have multiple types of memory attached to a
> > single CPU. These disparate memory ranges have some characteristics in
>
On Thu, Dec 21, 2017 at 01:41:15AM +, Elliott, Robert (Persistent Memory)
wrote:
>
>
> > -Original Message-
> > From: Linux-nvdimm [mailto:linux-nvdimm-boun...@lists.01.org] On Behalf Of
> > Ross Zwisler
> ...
> >
> > On Wed, Dec 20, 2017 at 10:19:37AM -0800, Matthew Wilcox wrote:
>
On 12/21/2017 07:09 PM, Anshuman Khandual wrote:
> I had presented a proposal for NUMA redesign in the Plumbers Conference this
> year where various memory devices with different kind of memory attributes
> can be represented in the kernel and be used explicitly from the user space.
> Here is the l
On 12/22/2017 04:01 PM, Kogut, Jaroslaw wrote:
>> ... first thinking about redesigning the NUMA for
>> heterogeneous memory may not be a good idea. Will look into this further.
> I agree with comment that first a direction should be defined how to handle
> heterogeneous memory system.
>
>> https:
; Jerome Glisse ;
> John Hubbard ; Len Brown ; Tim
> Chen ; de...@acpica.org; linux-
> a...@vger.kernel.org; linux...@kvack.org; linux-nvd...@lists.01.org
> Subject: Re: [PATCH v3 0/3] create sysfs representation of ACPI HMAT
>
> On 12/14/2017 07:40 AM, Ross Zwisler wrote:
>
On 12/14/2017 07:40 AM, Ross Zwisler wrote:
> Quick Summary
>
> Platforms exist today which have multiple types of memory attached to a
> single CPU. These disparate memory ranges have some characteristics in
> common, such as CPU cache coherence, but they can have wide ranges of
> perf
Le 20/12/2017 à 23:41, Ross Zwisler a écrit :
> On Wed, Dec 20, 2017 at 02:29:56PM -0800, Dan Williams wrote:
>> On Wed, Dec 20, 2017 at 1:24 PM, Ross Zwisler
>> wrote:
>>> On Wed, Dec 20, 2017 at 01:16:49PM -0800, Matthew Wilcox wrote:
On Wed, Dec 20, 2017 at 12:22:21PM -0800, Dave Hansen wr
On Wed 20-12-17 09:41:07, Ross Zwisler wrote:
> On Mon, Dec 18, 2017 at 01:35:47PM -0700, Ross Zwisler wrote:
> > On Thu, Dec 14, 2017 at 02:00:32PM +0100, Michal Hocko wrote:
> <>
> > > What is the testing procedure? How can I setup qemu to simlate such HW?
> >
> > Well, the QEMU table simulation
Matthew Wilcox writes:
> On Mon, Dec 18, 2017 at 01:35:47PM -0700, Ross Zwisler wrote:
>> What I'm hoping to do with this series is to just provide a sysfs
>> representation of the HMAT so that applications can know which NUMA nodes to
>> select with existing utilities like numactl. This series
> -Original Message-
> From: Linux-nvdimm [mailto:linux-nvdimm-boun...@lists.01.org] On Behalf Of
> Ross Zwisler
...
>
> On Wed, Dec 20, 2017 at 10:19:37AM -0800, Matthew Wilcox wrote:
...
> > initiator is a CPU? I'd have expected you to expose a memory controller
> > abstraction rather
On Wed, Dec 20, 2017 at 02:29:56PM -0800, Dan Williams wrote:
> On Wed, Dec 20, 2017 at 1:24 PM, Ross Zwisler
> wrote:
> > On Wed, Dec 20, 2017 at 01:16:49PM -0800, Matthew Wilcox wrote:
> >> On Wed, Dec 20, 2017 at 12:22:21PM -0800, Dave Hansen wrote:
> >> > On 12/20/2017 10:19 AM, Matthew Wilcox
On Wed, Dec 20, 2017 at 1:24 PM, Ross Zwisler
wrote:
> On Wed, Dec 20, 2017 at 01:16:49PM -0800, Matthew Wilcox wrote:
>> On Wed, Dec 20, 2017 at 12:22:21PM -0800, Dave Hansen wrote:
>> > On 12/20/2017 10:19 AM, Matthew Wilcox wrote:
>> > > I don't know what the right interface is, but my laptop h
On Wed, Dec 20, 2017 at 01:16:49PM -0800, Matthew Wilcox wrote:
> On Wed, Dec 20, 2017 at 12:22:21PM -0800, Dave Hansen wrote:
> > On 12/20/2017 10:19 AM, Matthew Wilcox wrote:
> > > I don't know what the right interface is, but my laptop has a set of
> > > /sys/devices/system/memory/memoryN/ direc
On Wed, Dec 20, 2017 at 12:22:21PM -0800, Dave Hansen wrote:
> On 12/20/2017 10:19 AM, Matthew Wilcox wrote:
> > I don't know what the right interface is, but my laptop has a set of
> > /sys/devices/system/memory/memoryN/ directories. Perhaps this is the
> > right place to expose write_bw (etc).
>
On Wed, Dec 20, 2017 at 10:19:37AM -0800, Matthew Wilcox wrote:
> On Mon, Dec 18, 2017 at 01:35:47PM -0700, Ross Zwisler wrote:
> > What I'm hoping to do with this series is to just provide a sysfs
> > representation of the HMAT so that applications can know which NUMA nodes to
> > select with exis
On 12/20/2017 10:19 AM, Matthew Wilcox wrote:
> I don't know what the right interface is, but my laptop has a set of
> /sys/devices/system/memory/memoryN/ directories. Perhaps this is the
> right place to expose write_bw (etc).
Those directories are already too redundant and wasteful. I think we
On Mon, Dec 18, 2017 at 01:35:47PM -0700, Ross Zwisler wrote:
> What I'm hoping to do with this series is to just provide a sysfs
> representation of the HMAT so that applications can know which NUMA nodes to
> select with existing utilities like numactl. This series does not currently
> alter any
On Mon, Dec 18, 2017 at 01:35:47PM -0700, Ross Zwisler wrote:
> On Thu, Dec 14, 2017 at 02:00:32PM +0100, Michal Hocko wrote:
<>
> > What is the testing procedure? How can I setup qemu to simlate such HW?
>
> Well, the QEMU table simulation is gross, so I'd rather not get everyone
> testing with t
On Thu, Dec 14, 2017 at 02:00:32PM +0100, Michal Hocko wrote:
> [CC linix-api]
Oh, thanks. I'll add them to my CC list for sysfs related changes in the
future.
> On Wed 13-12-17 19:10:16, Ross Zwisler wrote:
> > This is the third revision of my patches adding a sysfs representation
> > of the AC
[CC linix-api]
On Wed 13-12-17 19:10:16, Ross Zwisler wrote:
> This is the third revision of my patches adding a sysfs representation
> of the ACPI Heterogeneous Memory Attribute Table (HMAT). These patches
> are based on v4.15-rc3 and a working tree can be found here:
>
> https://git.kernel.org
This is the third revision of my patches adding a sysfs representation
of the ACPI Heterogeneous Memory Attribute Table (HMAT). These patches
are based on v4.15-rc3 and a working tree can be found here:
https://git.kernel.org/pub/scm/linux/kernel/git/zwisler/linux.git/log/?h=hmat_v3
My goal is t
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