How to set the affinity of the runnable

[lizhaoyi]

Please provide the following info (tick the boxes after creating this topic):
Software Version
[*] DRIVE OS 6.0.6
DRIVE OS 6.0.5
DRIVE OS 6.0.4 (rev. 1)
DRIVE OS 6.0.4 SDK
other

Target Operating System
[*] Linux
QNX
other

Hardware Platform
DRIVE AGX Orin Developer Kit (940-63710-0010-D00)
DRIVE AGX Orin Developer Kit (940-63710-0010-C00)
[*] DRIVE AGX Orin Developer Kit (not sure its number)
other

SDK Manager Version
[*] 1.9.2.10884
other

Host Machine Version
native Ubuntu Linux 20.04 Host installed with SDK Manager
[*] native Ubuntu Linux 20.04 Host installed with DRIVE OS Docker Containers
native Ubuntu Linux 18.04 Host installed with DRIVE OS Docker Containers
other

I want runnables run on fixed core，but sched_setaffinity() or pthread_setaffinity_np() has no effect. How can I set the affinity of the runnable？

[SivaRamaKrishnaNV]

Dear @lizhaoyi,
Could you share the output of ll /sys/fs/cgroup/cpuset/ ?

[lizhaoyi]

Dear @SivaRamaKrishnaNV ,

cgroup.clone_children
0

cgroup.sane_behavior
0

cpuset.cpu_exclusive
1

cpuset.cpus
0-11

cpuset.effective_cpus
0-11

cpuset.effective_mems
0

cpuset.sched_load_balance
1

cpuset.sched_relax_domain_level
-1

notify_on_release
0

cgroup.procs (3.5 KB)
tasks (4.0 KB)

[SivaRamaKrishnaNV]

Dear @lizhaoyi,
It seems cpuset files are missing on machine causing the issue.
Could you share full logs and sample code?

[lizhaoyi]

Dear @SivaRamaKrishnaNV ，
Maybe is cpuset files are missing.Reflash the device and no this issue arise.

[SivaRamaKrishnaNV]

Dear @lizhaoyi,
Issue fixed after reflash?

[lizhaoyi]

Dear @SivaRamaKrishnaNV,
I’m not sure. According to your suggestions,other colleagues often flash the machine because of development environmental problems.Anyway, my test this time is ok.