All Questions
7
questions
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Number of NUMA nodes and CPU core selection for low latency systems
I use an AMD EPYC 9374F CPU with Ubuntu Server 23.04. My goal is having the lowest possible latency.
I am running 1 hot path thread in a core and 3 threads for other admin works. Depending on the NUMA ...
0
votes
1
answer
1k
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How to create a NUMA topology in single system environment
I want to know if it possible to create a NUMA topology(2 NUMA nodes is also fine) in a single system environment (I'm using virtualbox ubuntu 18.04).
When I run $numactl -H, I see the following
...
- 101
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votes
1
answer
2k
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Information About Named Shared Memory in /dev/shm
Let's say I see a file called /dev/shm/some.segment
How can I find out (with command lines):
The processes that are linked to it?
The NUMA node it locates?
For #2, I can write a small C program ...
- 165
0
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0
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19
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Using vmware images with numa suppprt
I want to demonstrate Linux numa system with 2 virtual machine images running linux
What is the best way and the correct distribution to use?
- 101
3
votes
1
answer
5k
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How can I change the distribution of Cores across NUMA-nodes?
On Ubuntu 14.04 TLS for 36 total cores = (2 x CPUs x 9 Cores x 2 HyperThreading), lscpu give me:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little ...
- 131
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0
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39
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Is there a way to run a job exclusively on a chip?
We've got a bunch of large (1TB+) NUMA machines at work and have been getting a lot of noise in benchmarking. We've noticed that run times for our application are very consistent from one run to the ...
- 297
16
votes
5
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48k
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Determine PCIe device NUMA node
Assuming fairly recent Linux OS, is there an easy way to determine to which NUMA node the PCIe slot, where a device is plugged in, belongs?
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