I couldn't locate the part you did "block shuffling" mentioned in your code

[JingLiuchang]

I assume it should be in aux_utils.cpp/int build_disk_index(...){ }
maybe somewhere after diskann::build_merged_vamana_index(
data_file_to_use.c_str(), diskann::Metric::L2, L, R, p_val,
indexing_ram_budget, mem_index_path, medoids_path, centroids_path);?
but the code after that is quite the same as diskann, I assume there should be one step doing the block shuffling to distinguish it from diskann?

[PwzXxm]

The block shuffling is done after the index is built. We read from the built index and shuffle it via codes in a submodule. Make sure you git clone with the submodules and you will see a directory named graph_partition under the root of this repo.

You could also inspect the https://github.com/zilliztech/starling/blob/main/scripts/run_benchmark.sh script and CMake files to have a deeper understanding of the file structure if you wish.