# Hanging downloads from neuropixel

**URL:** <https://community.brain-map.org/t/hanging-downloads-from-neuropixel/351>\
**Category:** Technical\
**Tags:** brain-observatory-visual-coding, how-to, allensdk\
**Created:** [November 14, 2019, 10:22pm UTC](https://community.brain-map.org/t/hanging-downloads-from-neuropixel/351 "2019-11-14T22:22:31Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![deanp3](https://avatars.discourse-cdn.com/v4/letter/d/c6cbf5/32.png) [@deanp3](https://community.brain-map.org/u/deanp3)\
**Post date:** [November 14, 2019, 10:22pm UTC](https://community.brain-map.org/t/hanging-downloads-from-neuropixel/351/1 "2019-11-14T22:22:31Z")

</div>

I am trying to download all spike data from the neuropixel data set. I used the ‘Accessing Neuropixels Visual Coding Data’ tutorials code on doing this from the section: Downloading the complete dataset. Three times now it has begun on a file but hung indefinitely (nwb files byte count unchanging over minutes after downloading over a gigabyte). Do you have advice/time out code snippets to address this problem? The code I use is below:

```
import os
import shutil

import numpy as np
import pandas as pd

from allensdk.brain_observatory.ecephys.ecephys_project_cache import EcephysProjectCache

data_directory = '/loc6tb/data/responses/np_allen/' # must be updated to a valid directory in your filesystem

manifest_path = os.path.join(data_directory, "manifest.json")

cache = EcephysProjectCache.from_warehouse(manifest=manifest_path)

sessions = cache.get_session_table()

for session_id, row in sessions.iterrows():
    
    truncated_file = True
    directory = os.path.join(data_directory + '/session_' + str(session_id))
    
    while truncated_file:
        session = cache.get_session_data(session_id)
        try:
            print(session.specimen_name)
            truncated_file = False
        except OSError:
            shutil.rmtree(directory)
            print(" Truncated spikes file, re-downloading")
```

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