Thread pinning

[mshiryaev]

Hello, are there any plans to add support for thread pinning on CPU cores?

[soumith]

we don't have any plans

[mshiryaev]

@soumith thanks for quick reply.
So what approach would you suggest to pin lua threads? I found only likwid package what can be utilized for that purpose (https://github.com/RRZE-HPC/likwid). Maybe you know other ways?

lua 'threads' package is used in Torch LMDB dataloader and pinning to dedicated cores can improve performance.

[soumith]

you could directly use ffi and call the relevant C functions. it's probably a lot simpler to do it that way

[mshiryaev]

@soumith thanks for suggestion, just used pthread_setaffinity_np(pthread_self(), <core_id>).