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Rate Limiting

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# %load -r :19 ../_init.py
import pathlib
import sammo
from sammo.runners import OpenAIChat
from sammo.base import Template, EvaluationScore
from sammo.components import Output, GenerateText, ForEach, Union
from sammo.extractors import ExtractRegex
from sammo.data import DataTable
import json
import requests

API_CONFIG_FILE = pathlib.Path().cwd().parent.parent / "config" / "personal.openai"
API_CONFIG = ""
if API_CONFIG_FILE.exists():
    API_CONFIG = API_CONFIG_FILE
if not API_CONFIG:
    raise ValueError('Please set API_CONFIG to {"api_key": "YOUR_KEY"}')

_ = sammo.setup_logger("WARNING")  # we're only interested in warnings for now

Rate Limiting#

Many APIs have rate limits, often in terms of number of requests within a certain time period or a total cost.

You have three options to specify rate limits in Runner (in increasing order of flexibility):

  1. Specify a number for the rate_limit parameter. This will enforce a requests per second limit equal to that number.

  2. Specify a list of AtMost objects that are applied in an logical AND fashion.

  3. Pass an instance of Throttler (or a subclass of it). This allows you to fine-tune some settings, e.g., how costs are calculated.

Simple rate limit (qps)#

runner = OpenAIChat(model_id="gpt-3.5-turbo-16k", api_config=API_CONFIG, rate_limit=1)
Output(GenerateText(Template("Output as a latin numeral: {{input}}"))).run(
    runner, list(range(1,6))
)

minibatches[###################################################################################]5/5[00:04<00:00, 1.13it/s]

+---------+----------+
| input   | output   |
+=========+==========+
| 1       | I        |
+---------+----------+
| 2       | II       |
+---------+----------+
| 3       | III      |
+---------+----------+
| 4       | IV       |
+---------+----------+
| 5       | V        |
+---------+----------+
Constants: None

As specified, SAMMO issued exactly one prompt request per second.

Advanced rate limits#

Let’s say we want to make sure we never have more than 1 running request.

from sammo.throttler import AtMost

runner = OpenAIChat(model_id="gpt-3.5-turbo-16k", api_config=API_CONFIG, rate_limit=AtMost(1, "running"))

Output(GenerateText(Template("Output as a latin numeral: {{input}}"))).run(
    runner, list(range(1,6))
)

minibatches[###################################################################################]5/5[00:02<00:00, 1.88it/s]

+---------+----------+
| input   | output   |
+=========+==========+
| 1       | I        |
+---------+----------+
| 2       | II       |
+---------+----------+
| 3       | III      |
+---------+----------+
| 4       | IV       |
+---------+----------+
| 5       | V        |
+---------+----------+
Constants: None

Or, you want to run five queries every 10 seconds, but make sure they have at least 100ms breaks.

limits = [AtMost(1, "calls", 0.1), AtMost(5, "calls", 10)]
runner = OpenAIChat(model_id="gpt-3.5-turbo-16k", api_config=API_CONFIG, rate_limit=limits)

Output(GenerateText(Template("Output as a latin numeral: {{input}}"))).run(
    runner, list(range(1,6))
)

minibatches[###################################################################################]5/5[00:00<00:00, 5.08it/s]

+---------+----------+
| input   | output   |
+=========+==========+
| 1       | I        |
+---------+----------+
| 2       | II       |
+---------+----------+
| 3       | III      |
+---------+----------+
| 4       | IV       |
+---------+----------+
| 5       | V        |
+---------+----------+
Constants: None
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