Anything related to processor affinity, also known as CPU pinning. The processor affinity is a propriety of a process or a thread in an OS on multi-processor or multi-core systems that influences the OS' scheduling algorithm, binding the execution of that process (or thread) to a specific processor (or core). DO NOT use this tag as a synonym for [affinetransform] tag.
Questions tagged [affinity]
330 questions
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[k8s]I try to assign one pod to the normal node, and the others onto a spot node by using podAntiAffinity
I have 6 nodes,all of them have labels "group:emp",4 of them have labels "iKind:spot",2 of them have labels "ikind:normal".
I use the deployment yaml to assign one pod to the normal node and others on the spot node, but it didn't work.
I start to…
scut_yk
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kubernetes affinity & anti-affinity
I have some little confusion. Please clarify.
In kubernetes we have concept called affinity and anti-affinity.
affinity provided two types
1: node affinity
2: pod-affinity
I want to know what are types are provided by anti-affinity?
I am thinking…
kaka
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Is it a good practice (feasible) to combine both nodeAfinity and podAffinity rules when assigning Pods to Nodes on kubernetes
Is it a good practice (feasible) to combine both nodeAfinity and podAffinity rules when assigning Pods to Nodes on kubernetes.
Example :
apiVersion: v1
kind: Pod
metadata:
name: node-and-pod-affinity-combined
spec:
affinity:
nodeAffinity:
…
DT.
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Does a processor affinity set by SetThreadAffinityMask also apply to children threads?
I have an application that makes use of many threads, one of them being more time critical than the others. I have already tried using priority, but have found that Windows doesn't always honor the priority to the extent I would like and sometimes…
KyleL
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Problems configuring Ingress with cookie affinity
I was looking for how to use cookie affinity in GKE, using Ingress for that.
I've found the following link to do it: https://cloud.google.com/kubernetes-engine/docs/how-to/configure-backend-service
I've created a yaml with the…
blue
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What is an example of violating class affinity?
The page on UICollectionClass (from the Microsoft WPF libraries) has the following note:
A UIElementCollection has affinity to its own context (class). You
must access the collection from the context of the owning Panel.
What is an example of an…
Sabuncu
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Why is Python's Laplacian method different from Research Paper?
I found a Python library for Laplacian Score Feature Selection. But the implementation is seemingly different from the research paper.
I implemented the selection method according to the algorithm from the paper…
Richard Dixie
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Set threads affinity on OpenCV
I have a CPU-intensive code (it uses Semi-Global Stereo Matching) that runs multicore, since I've enabled WITH_OPENMP flag when compiling OpenCV for Visual Studio 2013 x64.
However, this code runs on all of my 8 logical cores (I have a 4-cores CPU…
TheUnexpected
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sklearn python affinity propagation - is there a method to calculate error in clusters?
In looking at the docs for sklearn.cluster and Affinity Propagation I don't see anything that would calculate error in a cluster. Does this exist or is this something I have to write on my own?
Update: Let me propose a possible idea:
With Affinity…
DaveK
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How to set the Linux init process affinity without using grub?
Our application may run on a variety of architectures all on a ramfs machine.
It needs to set core isolation and affinity for extremely fast processing.
Depending on the architecture, it may need to be pinned to a hyperthread on numa 0 or numa 1. We…
howling cat
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Android background process affinity can't be modified through native code
The following piece of Android code only produces native threads running on the same CPU core. FaceEngineWrapper.Run() is a JNI wrapper for a face detect inference engine and spawns quite a lot native threads (through both std::thread and openmp in…
reasonsolo
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how to interpret the smp_affinity output
My lscpu output is:
I have only one entry in /proc/interrupts for my NIC:
smp_affinity for my NIC eth0 is:
Since I have only 8 CPUs, I expected the smp_affinity value to have 8 bits, each bit for one CPU core, but I have 32 bits.
How do I…
user2761431
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Changing the affinity of a Console C# program
In this page, the following code is an example for changing the affinity of the current process:
using System;
using System.Diagnostics;
class Program
{
static void Main()
{
Process myProcess = Process.GetCurrentProcess();
…
user5540335
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1 answer
Pinning a large number of threads to a single CPU causes utilization spike on all cores
I've written a little test program that spawns a large number of threads (in my case 32 threads on a computer with 4 cores) and pins them all to one core with the pthread_setaffinity_np syscall.
These threads run in a loop in which they report the…
Oliver
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set two threads to the same cpu affinity pthread_getaffinity_np
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
std::cout << "current cpu: " << sched_getcpu() << std::endl;
CPU_SET(sched_getcpu(), &cpuset);
if (pthread_setaffinity_np(std_thread.getNativeHandle(), sizeof(cpu_set_t), &cpuset) == 0) {
…
user470739