CPU Pinning and Numa Tuning ConnectX_5/ConnectX_6 notebook not working

This topic has 6 replies, 2 voices, and was last updated 2 days, 7 hours ago by Rasman Mubtasim Swargo.

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August 23, 2025 at 12:08 am #8843
Rasman Mubtasim Swargo
Participant
I’m trying to run the CPU Pinning and NUMA Tuning (ConnectX-5/ConnectX-6) notebook with a few modifications because I need an NVMe drive and a ConnectX-6 NIC for my experiments. I have always used this notebook to create slices, and it used to work.

Since last week, I’ve noticed that I can’t ping or transfer files from node1 to node2 created with the same notebook. I attached the notebook here. Even the iperf3 cell won’t run/connect.

Could you help me understand what I might be doing wrong or what changed?
August 23, 2025 at 12:10 am #8844
Rasman Mubtasim Swargo
Participant
Sorry, I could not upload the notebook as the file type is not supported.

Here is the github link of the notebook: https://github.com/swargo98/LLM-based-Data-Movement-Optimizer/blob/main/iperf3_optimized_w_error.ipynb
August 25, 2025 at 11:42 am #8845
Komal Thareja
Participant
Hi Rasman,

I was able to run iperf3 optimized notebook without issues. I am unable to access your notebook. It says Page Not Found.

Could you please share your slice ID?

Thanks,

Komal
August 25, 2025 at 2:20 pm #8846
Rasman Mubtasim Swargo
Participant
Komal Thareja wrote:

Hi Rasman,

I was able to run iperf3 optimized notebook without issues. I am unable to access your notebook. It says Page Not Found.

Could you please share your slice ID?

Thanks,

Komal

Hi Komal,
Here is the slice ID: f05dedc0-468f-406e-a566-8041d507ad60

I am trying to transfer some files from MASS to TACC but it is failing to find any route.

Here is the notebook that I used: https://github.com/swargo98/LLM-based-Data-Movement-Optimizer/blob/main/iperf3_optimized_w_error.ipynb
August 25, 2025 at 2:35 pm #8847
Rasman Mubtasim Swargo
Participant
Komal Thareja wrote:

Hi Rasman,

I was able to run iperf3 optimized notebook without issues. I am unable to access your notebook. It says Page Not Found.

Could you please share your slice ID?

Thanks,

Komal

I have tried again, this time without any modifications to the original notebook, but I still got the same error.
```
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Source:  Node-MASS to Dest: Node-TACC
iperf3: error - unable to connect to server: No route to host
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Source:  Node-TACC to Dest: Node-MASS
iperf3: error - unable to connect to server: No route to host
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
```
Slice ID: 919b590f-87aa-41e8-bb22-58acf4c79d4c
August 25, 2025 at 8:09 pm #8848
Komal Thareja
Participant
Hi Rasman,

The dataplane was down at MASS. The link has been restored, could you please try running the iPerf3 cells again from the notebook. Apologies for the inconvenience.

Thanks,

Komal
August 25, 2025 at 8:26 pm #8849
Rasman Mubtasim Swargo
Participant
It’s working now.

Thanks,

Swargo
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