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Add support for o200k tokenization - #16

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hendrikvanantwerpen merged 6 commits into
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add-o200k-tokens
Sep 25, 2024
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hendrikvanantwerpen merged 6 commits into
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add-o200k-tokens

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@hendrikvanantwerpen hendrikvanantwerpen self-assigned this Sep 24, 2024
Comment thread crates/bpe/src/byte_pair_encoding.rs Outdated
Comment on lines +208 to +210
if let Some(j) = bytes_hash_to_token.insert(hash_bytes(&token), i as u32) {
eprintln!("collision: ({i}, {j})");
}

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should the function return an error instead when this happens?

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If this happens, the assertion below the loop will fail. I wonder if we want to provide a way to specify the factor as part of the API, if anyone wants to construct a BPE from their own dictionary. The hard-coded constant might make it harder to reuse this if users bring their own tokens. But I'll save that for a follow-up PR.

/// 3. Run [`update_token_dicts`] tests below to update data files.
#[test]
#[ignore = "run manually to find a suitable hash factor"]
fn find_hash_factor() {

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:)

Comment thread crates/bpe/src/byte_pair_encoding.rs Outdated
// TODO: Move the generation of the dictionary into some build procedure?
#[test]
fn test_serialize() {
#[ignore = "run manually to update data files"]

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in principle, we could let this test run normally, since it will fix the broken data file (and one will see in the diff that something has changed)

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Yes, let's do that.

@aneubeck aneubeck left a comment

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What are the benchmark numbers for o200k?
Did things get slower?

@hendrikvanantwerpen

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What are the benchmark numbers for o200k?
Did things get slower?

Performance characteristics look similar.

cl100k

image

o200k

image

@hendrikvanantwerpen
hendrikvanantwerpen merged commit 3a14632 into main Sep 25, 2024
@hendrikvanantwerpen
hendrikvanantwerpen deleted the add-o200k-tokens branch September 25, 2024 12:09
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2 participants