Instructions to use Salesforce/xgen-7b-8k-base with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use Salesforce/xgen-7b-8k-base with Transformers:

# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("text-generation", model="Salesforce/xgen-7b-8k-base")

# Load model directly
from transformers import AutoTokenizer, AutoModelForCausalLM

tokenizer = AutoTokenizer.from_pretrained("Salesforce/xgen-7b-8k-base")
model = AutoModelForCausalLM.from_pretrained("Salesforce/xgen-7b-8k-base")

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use Salesforce/xgen-7b-8k-base with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "Salesforce/xgen-7b-8k-base"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "Salesforce/xgen-7b-8k-base",
		"prompt": "Once upon a time,",
		"max_tokens": 512,
		"temperature": 0.5
	}'

Use Docker

docker model run hf.co/Salesforce/xgen-7b-8k-base

SGLang

How to use Salesforce/xgen-7b-8k-base with SGLang:

Install from pip and serve model

# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
    --model-path "Salesforce/xgen-7b-8k-base" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "Salesforce/xgen-7b-8k-base",
		"prompt": "Once upon a time,",
		"max_tokens": 512,
		"temperature": 0.5
	}'

Use Docker images

docker run --gpus all \
    --shm-size 32g \
    -p 30000:30000 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=<secret>" \
    --ipc=host \
    lmsysorg/sglang:latest \
    python3 -m sglang.launch_server \
        --model-path "Salesforce/xgen-7b-8k-base" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "Salesforce/xgen-7b-8k-base",
		"prompt": "Once upon a time,",
		"max_tokens": 512,
		"temperature": 0.5
	}'

Docker Model Runner
How to use Salesforce/xgen-7b-8k-base with Docker Model Runner:
```
docker model run hf.co/Salesforce/xgen-7b-8k-base
```

"no entry found for key" Error

#15

by mber - opened Jul 4, 2023

Discussion

mber

Jul 4, 2023

Hi!
I tried using the model, but got the "no entry found for key" error message.
It seems that the vocabulary size of 50313, but the output projection is up to 51200.
When I looked at the predictions of the model, I indeed got tokens such as index 50906.
Is there going to be a fix for this?

rooa

Salesforce AI Research org Jul 10, 2023

Where did you find the vocab size of 50313? Could you provide us with an example snippet that produced the error? Thanks!

mber

Jul 12, 2023

When using the tokenizer, I get the following:

In the model's config, the vocab_size is 51200:

Then, during decoding, a token of 50906 was generated, causing the error:

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