BLM headers

BLM headers are no fun to deal with.

Check the headers folder for some generated BLM headers.

Get the headers

To download just the headers run the dl_headers.py script, from a terminal:

curl https://raw.githubusercontent.com/loiccoyle/blm_header_repo/master/dl_headers.py | python3

Do it yourself

If you want to regenerate the headers, you can by:

git clone https://github.com/loiccoyle/blm_header_repo
cd blm_header_repo
make dependencies
make blm_headers

Note it usually is a good idea to do it in a virtual environment.

How it works

The headers are generated using loiccoyle/blm_header. Have a look at the generate_headers.py file, it should be relatively easy to understand whats going on. The basic gist is the following:

• I get the timings of the changes from timber's BLM metadata (plus a few extra manually added).

• For each timestamp I find the closest fill following it which reaches STABLE and start matching on the 2 hours following the INJPROT beam mode. This avoids matching on an empty machine which improves the matching quality as it is not matching on noise.