Unable to run ondisk demo

[xrd]

I'm trying to run this example here:

https://github.com/facebookresearch/faiss/wiki/Indexes-that-do-not-fit-in-RAM

Using this code:

https://github.com/facebookresearch/faiss/blob/main/demos/demo_client_server_ivf.py

Do I need to have something inside /tmp or the sift1M directory before starting?

Specifically, this command to train the index.

for st in {5..8}; do python demo_client_server_ivf.py $st & done (I changed & to semicolon, I think this is a typo?)

I get this result:

$ for st in {5..8}; do python3 demo_client_server_ivf.py $st ; done
read /tmp/block_0.index
Traceback (most recent call last):
  File "/home/xrdawson/Projects/ai/faiss-server/demo_client_server_ivf.py", line 73, in <module>
    index = faiss.read_index(fname)
  File "/home/xrdawson/.local/lib/python3.10/site-packages/faiss/swigfaiss_avx2.py", line 10538, in read_index
    return _swigfaiss_avx2.read_index(*args)
RuntimeError: Error in faiss::FileIOReader::FileIOReader(const char*) at /project/faiss/faiss/impl/io.cpp:67: Error: 'f' failed: could not open /tmp/block_0.index for reading: No such file or directory
read /tmp/block_1.index
Traceback (most recent call last):
  File "/home/xrdawson/Projects/ai/faiss-server/demo_client_server_ivf.py", line 73, in <module>
    index = faiss.read_index(fname)
  File "/home/xrdawson/.local/lib/python3.10/site-packages/faiss/swigfaiss_avx2.py", line 10538, in read_index
    return _swigfaiss_avx2.read_index(*args)
RuntimeError: Error in faiss::FileIOReader::FileIOReader(const char*) at /project/faiss/faiss/impl/io.cpp:67: Error: 'f' failed: could not open /tmp/block_1.index for reading: No such file or directory
read /tmp/block_2.index
Traceback (most recent call last):
  File "/home/xrdawson/Projects/ai/faiss-server/demo_client_server_ivf.py", line 73, in <module>
    index = faiss.read_index(fname)
  File "/home/xrdawson/.local/lib/python3.10/site-packages/faiss/swigfaiss_avx2.py", line 10538, in read_index
    return _swigfaiss_avx2.read_index(*args)
RuntimeError: Error in faiss::FileIOReader::FileIOReader(const char*) at /project/faiss/faiss/impl/io.cpp:67: Error: 'f' failed: could not open /tmp/block_2.index for reading: No such file or directory
read /tmp/block_3.index
Traceback (most recent call last):
  File "/home/xrdawson/Projects/ai/faiss-server/demo_client_server_ivf.py", line 73, in <module>
    index = faiss.read_index(fname)
  File "/home/xrdawson/.local/lib/python3.10/site-packages/faiss/swigfaiss_avx2.py", line 10538, in read_index
    return _swigfaiss_avx2.read_index(*args)
RuntimeError: Error in faiss::FileIOReader::FileIOReader(const char*) at /project/faiss/faiss/impl/io.cpp:67: Error: 'f' failed: could not open /tmp/block_3.index for reading: No such file or directory

My requirements.txt looks like this. Should I be using faiss-gpu?

faiss-cpu
packaging

[xrd]

I confirmed there is no change by using faiss-gpu.