Building SSG index for single core CPU

Hello, I'm interested in your work and I'm trying to reproduce your result.

I want to reproduce the result for DEEP100M dataset on single core.
However, _test_nn_descent_ is not working because of segmentation fault.
Can you let me know how did you build kNN graphs for this dataset using Faiss as mentioned in your paper?
Also, can you share both kNN graph and ssg index?

Thanks