Displaying 20 results from an estimated 1000 matches for "affiner".
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affine
2013 Sep 17
1
[PATCH v2] xen: sched_credit: filter node-affinity mask against online cpus
in _csched_cpu_pick(), as not doing so may result in the domain''s
node-affinity mask (as retrieved by csched_balance_cpumask() )
and online mask (as retrieved by cpupool_scheduler_cpumask() )
having an empty intersection.
Therefore, when attempting a node-affinity load balancing step
and running this:
...
/* Pick an online CPU from the proper affinity mask */
2013 Sep 17
1
[PATCH] xen: numa-sched: leave node-affinity alone if not in "auto" mode
If the domain''s NUMA node-affinity is being specified by the
user/toolstack (instead of being automatically computed by Xen),
we really should stick to that. This means domain_update_node_affinity()
is wrong when it filters out some stuff from there even in "!auto"
mode.
This commit fixes that. Of course, this does not mean node-affinity
is always honoured (e.g., a vcpu
2006 Dec 18
4
VCPU affinity
What is the best way to pin VCPUs. It looks like the implementation of affinity currently is at best only "soft".
Regards,
K. Y
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2023 Mar 28
0
[PATCH v4 03/11] virtio-vdpa: Support interrupt affinity spreading mechanism
On Tue, Mar 28, 2023 at 12:05?PM Yongji Xie <xieyongji at bytedance.com> wrote:
>
> On Tue, Mar 28, 2023 at 11:44?AM Jason Wang <jasowang at redhat.com> wrote:
> >
> > On Tue, Mar 28, 2023 at 11:33?AM Yongji Xie <xieyongji at bytedance.com> wrote:
> > >
> > > On Tue, Mar 28, 2023 at 11:14?AM Jason Wang <jasowang at redhat.com> wrote:
>
2011 Oct 01
2
[LLVMdev] How to make Polly ignore some non-affine memory accesses
Hello everyone,
I'm trying to use LLVM+Polly to obtain a polyhedral representation of
some loops to use later for passes I want to implement, but seems like
Polly will stop when reaching any statement that has non-affine access
functions of the loop bounds discarding the whole SCoP entirely.
What I would like to achieve is still getting some information for the
statements that , instead,
2012 Feb 08
2
[LLVMdev] Polly and non affine branches in ScoPs
Hi, I'm using Polly to analyze memory access patterns for an
university project and I'm trying to get polly working on some loops
that polly marks as "containing non affine branches" .
>From what I understand polly skips Scops that contain these branches
(which comprises something like "if (i % 2 == 0)" where i is a loop
varying variable) because these kind of
2023 Mar 28
0
[PATCH v4 03/11] virtio-vdpa: Support interrupt affinity spreading mechanism
On Tue, Mar 28, 2023 at 11:03?AM Yongji Xie <xieyongji at bytedance.com> wrote:
>
> On Fri, Mar 24, 2023 at 2:28?PM Jason Wang <jasowang at redhat.com> wrote:
> >
> > On Thu, Mar 23, 2023 at 1:31?PM Xie Yongji <xieyongji at bytedance.com> wrote:
> > >
> > > To support interrupt affinity spreading mechanism,
> > > this makes use of
2011 Oct 01
0
[LLVMdev] How to make Polly ignore some non-affine memory accesses
On 10/01/2011 03:26 PM, Marcello Maggioni wrote:
> Hello everyone,
>
> I'm trying to use LLVM+Polly to obtain a polyhedral representation of
> some loops to use later for passes I want to implement, but seems like
> Polly will stop when reaching any statement that has non-affine access
> functions of the loop bounds discarding the whole SCoP entirely.
>
> What I would
2012 Feb 12
0
[LLVMdev] Polly and non affine branches in ScoPs
On 02/08/2012 08:08 PM, Marcello Maggioni wrote:
> Hi, I'm using Polly to analyze memory access patterns for an
> university project and I'm trying to get polly working on some loops
> that polly marks as "containing non affine branches" .
Hi Marcello,
sorry for the long delay.
> From what I understand polly skips Scops that contain these branches
> (which
2023 Jan 27
0
[PATCH v2 01/11] genirq/affinity:: Export irq_create_affinity_masks()
On Mon, Dec 19, 2022 at 05:36:02PM +0800, Yongji Xie wrote:
> On Mon, Dec 19, 2022 at 3:33 PM Michael S. Tsirkin <mst at redhat.com> wrote:
> >
> > On Mon, Dec 05, 2022 at 04:41:17PM +0800, Xie Yongji wrote:
> > > Export irq_create_affinity_masks() so that some modules
> > > can make use of it to implement interrupt affinity
> > > spreading
2011 Nov 19
0
[LLVMdev] How to make Polly ignore some non-affine memory accesses
On 11/18/2011 01:34 PM, Marcello Maggioni wrote:
> Ok , this is what I believe is the final patch that adds the
> non-affine accept functionality to Polly, this should have no issues.
>
> I added three tests, two in ScopInfo (two simple tests, one expected
> fail and one success based on the same source) and one in CodeGen that
> verifies that the code is generated.
>
> The
2013 Dec 14
0
[PATCH v2] xen: sched: introduce hard and soft affinity in credit 2 scheduler
Modified function runq_candidate in the credit 2 scheduler to
have it consider hard and soft affinity when choosing the next
vCPU from the run queue to run on the given pCPU.
Function now chooses the vCPU with the most credit that has hard affinity
and maybe soft affinity for the given pCPU. If it does not have soft affinity
and there is another vCPU that prefers to run on the given pCPU, then as
2017 Apr 21
3
[PATCH net-next v2 2/5] virtio-net: transmit napi
>>> Maybe I was wrong, but according to Michael's comment it looks like he
>>> want
>>> check affinity_hint_set just for speculative tx polling on rx napi
>>> instead
>>> of disabling it at all.
>>>
>>> And I'm not convinced this is really needed, driver only provide affinity
>>> hint instead of affinity, so it's
2017 Apr 21
3
[PATCH net-next v2 2/5] virtio-net: transmit napi
>>> Maybe I was wrong, but according to Michael's comment it looks like he
>>> want
>>> check affinity_hint_set just for speculative tx polling on rx napi
>>> instead
>>> of disabling it at all.
>>>
>>> And I'm not convinced this is really needed, driver only provide affinity
>>> hint instead of affinity, so it's
2018 Sep 05
2
Domain vCPU threads affinity
Hello,
According to the docs, vcpupin will use either cgroups or sched_setaffinity
to pin vcpu threads to cpus. How is this decision made?
I observe differences even on different hosts featuring the same version of
libvirtd (1.3.1): on one host vcpupin affects cpuset.cpus (cgroup), and on
the other it affects vcpu threads affinity (observed through taskset).
Thanks,
Nikos
-------------- next
2012 Feb 14
1
[LLVMdev] Polly and non affine branches in ScoPs
2012/2/12 Tobias Grosser <tobias at grosser.es>:
> On 02/08/2012 08:08 PM, Marcello Maggioni wrote:
>>
>> Hi, I'm using Polly to analyze memory access patterns for an
>> university project and I'm trying to get polly working on some loops
>> that polly marks as "containing non affine branches" .
>
>
> Hi Marcello,
>
> sorry for the
2013 Mar 15
2
strange phenomenon on CPU affinity
Hello,
My testing machine has 2 quad-core CPU (It supports hyperthreading,
but i disable it in BIOS). I uses Xen 4.0.1 as the hypervisor. When I use 8
VMs to conduct a test, CPU affinity of the VMs is very strange. Like this:
vm_name vcpu_num cpu_affinity
Domain-0 8 any
VM1 4 1,3,5,7
VM2 4 1,3,5,7
VM3 4 1,3,5,7
VM4 4
2020 Jan 30
2
Writing loop transformations on the right representation is more productive
Am Mo., 27. Jan. 2020 um 22:06 Uhr schrieb Uday Kumar Reddy Bondhugula <
uday at polymagelabs.com>:
> Hi Michael,
>
> Although the approach to use a higher order in-memory abstraction like the
> loop tree will make it easier than what you have today, if you used MLIR
> for this representation, you already get a round trippable textual format
> that is *very close* to your
2012 Mar 29
1
virsh create failed: cannot set CPU affinity on process 0
Hello Everyone:
We can't create vm on a physical server with 64 CPU(as reported by
/proc/cpuinfo). The error message is: "cannot set CPU affinity on process 0"
The following is the capabilities detected by libvirt:
<arch>x86_64</arch>
<model>Westmere</model>
<vendor>Intel</vendor>
<topology sockets='4'
2013 Mar 27
2
[PATCH] x86/S3: Restore broken vcpu affinity on resume (v3)
When in SYS_STATE_suspend, and going through the cpu_disable_scheduler
path, save a copy of the current cpu affinity, and mark a flag to
restore it later.
Later, in the resume process, when enabling nonboot cpus restore these
affinities.
v2:
Fix formatting problems.
remove early return in cpu_disable_scheduler() path.
v3:
Fix remaining errant tab
Move restore_vcpu_affinity() to thaw_domains(),