Llama 3: Open LLM from Meta#
Llama-3 is the latest top open-source LLM from Meta. It has been released with a license that authorizes commercial use. You can deploy a private Llama-3 chatbot with SkyPilot in your own cloud with just one simple command.
Why use SkyPilot vs. commercial hosted solutions?#
No lock-in: run on any supported cloud - AWS, Azure, GCP, Lambda Cloud, IBM, Samsung, OCI
Everything stays in your cloud account (your VMs & buckets)
No one else sees your chat history
Pay absolute minimum — no managed solution markups
Freely choose your own model size, GPU type, number of GPUs, etc, based on scale and budget.
…and you get all of this with 1 click — let SkyPilot automate the infra.
Prerequisites#
Go to the HuggingFace model page and request access to the model
meta-llama/Meta-Llama-3-70B-Instruct.Check that you have installed SkyPilot (docs).
Check that
sky checkshows clouds or Kubernetes are enabled.
SkyPilot YAML#
Click to see the full recipe YAML
envs:
MODEL_NAME: meta-llama/Meta-Llama-3-70B-Instruct
# MODEL_NAME: meta-llama/Meta-Llama-3-8B-Instruct
HF_TOKEN: # TODO: Fill with your own huggingface token, or use --env to pass.
service:
replicas: 2
# An actual request for readiness probe.
readiness_probe:
path: /v1/chat/completions
post_data:
model: $MODEL_NAME
messages:
- role: user
content: Hello! What is your name?
max_tokens: 1
resources:
accelerators: {L4:8, A10g:8, A10:8, A100:4, A100:8, A100-80GB:2, A100-80GB:4, A100-80GB:8}
# accelerators: {L4, A10g, A10, L40, A40, A100, A100-80GB} # We can use cheaper accelerators for 8B model.
cpus: 32+
use_spot: True
disk_size: 512 # Ensure model checkpoints can fit.
disk_tier: best
ports: 8081 # Expose to internet traffic.
setup: |
conda activate vllm
if [ $? -ne 0 ]; then
conda create -n vllm python=3.10 -y
conda activate vllm
fi
pip install vllm==0.4.2
# Install Gradio for web UI.
pip install gradio openai
pip install flash-attn==2.5.9.post1
run: |
conda activate vllm
echo 'Starting vllm api server...'
# https://github.com/vllm-project/vllm/issues/3098
export PATH=$PATH:/sbin
# NOTE: --gpu-memory-utilization 0.95 needed for 4-GPU nodes.
python -u -m vllm.entrypoints.openai.api_server \
--port 8081 \
--model $MODEL_NAME \
--trust-remote-code --tensor-parallel-size $SKYPILOT_NUM_GPUS_PER_NODE \
--gpu-memory-utilization 0.95 \
--max-num-seqs 64 \
2>&1 | tee api_server.log &
while ! `cat api_server.log | grep -q 'Uvicorn running on'`; do
echo 'Waiting for vllm api server to start...'
sleep 5
done
echo 'Starting gradio server...'
git clone https://github.com/vllm-project/vllm.git || true
python vllm/examples/gradio_openai_chatbot_webserver.py \
-m $MODEL_NAME \
--port 8811 \
--model-url http://localhost:8081/v1 \
--stop-token-ids 128009,128001
You can also get the full YAML file here.
Serving Llama-3: single instance#
Launch a single spot instance to serve Llama-3 on your infra:
HF_TOKEN=xxx sky launch llama3.yaml -c llama3 --env HF_TOKEN
Example outputs:
...
I 04-18 16:31:30 optimizer.py:693] == Optimizer ==
I 04-18 16:31:30 optimizer.py:704] Target: minimizing cost
I 04-18 16:31:30 optimizer.py:716] Estimated cost: $1.2 / hour
I 04-18 16:31:30 optimizer.py:716]
I 04-18 16:31:30 optimizer.py:839] Considered resources (1 node):
I 04-18 16:31:30 optimizer.py:909] -----------------------------------------------------------------------------------------------------------------
I 04-18 16:31:30 optimizer.py:909] CLOUD INSTANCE vCPUs Mem(GB) ACCELERATORS REGION/ZONE COST ($) CHOSEN
I 04-18 16:31:30 optimizer.py:909] -----------------------------------------------------------------------------------------------------------------
I 04-18 16:31:30 optimizer.py:909] Azure Standard_NC48ads_A100_v4[Spot] 48 440 A100-80GB:2 eastus 1.22 ✔
I 04-18 16:31:30 optimizer.py:909] AWS g6.48xlarge[Spot] 192 768 L4:8 us-east-1b 1.43
I 04-18 16:31:30 optimizer.py:909] Azure Standard_NC96ads_A100_v4[Spot] 96 880 A100-80GB:4 eastus 2.44
I 04-18 16:31:30 optimizer.py:909] AWS g5.48xlarge[Spot] 192 768 A10G:8 us-east-2b 2.45
I 04-18 16:31:30 optimizer.py:909] GCP g2-standard-96[Spot] 96 384 L4:8 asia-east1-a 2.49
I 04-18 16:31:30 optimizer.py:909] Azure Standard_ND96asr_v4[Spot] 96 900 A100:8 eastus 4.82
I 04-18 16:31:30 optimizer.py:909] GCP a2-highgpu-4g[Spot] 48 340 A100:4 europe-west4-a 4.82
I 04-18 16:31:30 optimizer.py:909] AWS p4d.24xlarge[Spot] 96 1152 A100:8 us-east-2b 4.90
I 04-18 16:31:30 optimizer.py:909] Azure Standard_ND96amsr_A100_v4[Spot] 96 1924 A100-80GB:8 southcentralus 5.17
I 04-18 16:31:30 optimizer.py:909] GCP a2-ultragpu-4g[Spot] 48 680 A100-80GB:4 us-east4-c 7.39
I 04-18 16:31:30 optimizer.py:909] GCP a2-highgpu-8g[Spot] 96 680 A100:8 europe-west4-a 9.65
I 04-18 16:31:30 optimizer.py:909] GCP a2-ultragpu-8g[Spot] 96 1360 A100-80GB:8 us-east4-c 14.79
I 04-18 16:31:30 optimizer.py:909] -----------------------------------------------------------------------------------------------------------------
I 04-18 16:31:30 optimizer.py:909]
...
To run on Kubernetes or use an on-demand instance, pass --no-use-spot to the above command.
Example outputs with Kubernetes / on-demand instances:
$ HF_TOKEN=xxx sky launch llama3.yaml -c llama3 --env HF_TOKEN --no-use-spot
...
I 04-18 16:34:13 optimizer.py:693] == Optimizer ==
I 04-18 16:34:13 optimizer.py:704] Target: minimizing cost
I 04-18 16:34:13 optimizer.py:716] Estimated cost: $5.0 / hour
I 04-18 16:34:13 optimizer.py:716]
I 04-18 16:34:13 optimizer.py:839] Considered resources (1 node):
I 04-18 16:34:13 optimizer.py:909] ------------------------------------------------------------------------------------------------------------------
I 04-18 16:34:13 optimizer.py:909] CLOUD INSTANCE vCPUs Mem(GB) ACCELERATORS REGION/ZONE COST ($) CHOSEN
I 04-18 16:34:13 optimizer.py:909] ------------------------------------------------------------------------------------------------------------------
I 04-18 16:34:13 optimizer.py:909] Kubernetes 32CPU--512GB--8A100 32 512 A100:8 kubernetes 0.00 ✔
I 04-18 16:34:13 optimizer.py:909] Fluidstack recE2ZDQmqR9HBKYs5xSnjtPw 64 240 A100-80GB:2 generic_1_canada 4.96
I 04-18 16:34:13 optimizer.py:909] Fluidstack recUiB2e6s3XDxwE9 60 440 A100:4 calgary_1_canada 5.88
I 04-18 16:34:13 optimizer.py:909] Azure Standard_NC48ads_A100_v4 48 440 A100-80GB:2 eastus 7.35
I 04-18 16:34:13 optimizer.py:909] GCP g2-standard-96 96 384 L4:8 us-east4-a 7.98
I 04-18 16:34:13 optimizer.py:909] Fluidstack recWGm4oJ9AB3XVPxzRaujgbx 126 480 A100-80GB:4 generic_1_canada 9.89
I 04-18 16:34:13 optimizer.py:909] Paperspace A100-80Gx4 46 320 A100-80GB:4 East Coast (NY2) 12.72
I 04-18 16:34:13 optimizer.py:909] AWS g6.48xlarge 192 768 L4:8 us-east-1 13.35
I 04-18 16:34:13 optimizer.py:909] GCP a2-highgpu-4g 48 340 A100:4 us-central1-a 14.69
I 04-18 16:34:13 optimizer.py:909] Azure Standard_NC96ads_A100_v4 96 880 A100-80GB:4 eastus 14.69
I 04-18 16:34:13 optimizer.py:909] AWS g5.48xlarge 192 768 A10G:8 us-east-1 16.29
I 04-18 16:34:13 optimizer.py:909] Fluidstack recUYj6oGJCvAvCXC7KQo5Fc7 252 960 A100-80GB:8 generic_1_canada 19.79
I 04-18 16:34:13 optimizer.py:909] GCP a2-ultragpu-4g 48 680 A100-80GB:4 us-central1-a 20.11
I 04-18 16:34:13 optimizer.py:909] Paperspace A100-80Gx8 96 640 A100-80GB:8 East Coast (NY2) 25.44
I 04-18 16:34:13 optimizer.py:909] Azure Standard_ND96asr_v4 96 900 A100:8 eastus 27.20
I 04-18 16:34:13 optimizer.py:909] GCP a2-highgpu-8g 96 680 A100:8 us-central1-a 29.39
I 04-18 16:34:13 optimizer.py:909] Azure Standard_ND96amsr_A100_v4 96 1924 A100-80GB:8 eastus 32.77
I 04-18 16:34:13 optimizer.py:909] AWS p4d.24xlarge 96 1152 A100:8 us-east-1 32.77
I 04-18 16:34:13 optimizer.py:909] GCP a2-ultragpu-8g 96 1360 A100-80GB:8 us-central1-a 40.22
I 04-18 16:34:13 optimizer.py:909] AWS p4de.24xlarge 96 1152 A100-80GB:8 us-east-1 40.97
I 04-18 16:34:13 optimizer.py:909] ------------------------------------------------------------------------------------------------------------------
...
Wait until the model is ready (this can take 10+ minutes), as indicated by these lines:
...
(task, pid=17433) Waiting for vllm api server to start...
...
(task, pid=17433) INFO: Started server process [20621]
(task, pid=17433) INFO: Waiting for application startup.
(task, pid=17433) INFO: Application startup complete.
(task, pid=17433) INFO: Uvicorn running on http://0.0.0.0:8081 (Press CTRL+C to quit)
...
(task, pid=17433) Running on local URL: http://127.0.0.1:8811
(task, pid=17433) Running on public URL: https://xxxxxxxxxx.gradio.live
...
(task, pid=17433) INFO 03-28 04:32:50 metrics.py:218] Avg prompt throughput: 0.0 tokens/s, Avg generation throughput: 0.0 tokens/s, Running: 0 reqs, Swapped: 0 reqs, Pending: 0 reqs, GPU KV cache usage: 0.0%, CPU KV cache usage: 0.0%
🎉 Congratulations! 🎉 You have now launched the Llama-3 Instruct LLM on your infra.
You can play with the model via
Standard OpenAPI-compatible endpoints (e.g.,
/v1/chat/completions)Gradio UI (automatically launched)
To curl /v1/chat/completions:
ENDPOINT=$(sky status --endpoint 8081 llama3)
# We need to manually specify the stop_token_ids to make sure the model finish
# on <|eot_id|>.
curl http://$ENDPOINT/v1/chat/completions \
-H "Content-Type: application/json" \
-d '{
"model": "meta-llama/Meta-Llama-3-70B-Instruct",
"messages": [
{
"role": "system",
"content": "You are a helpful assistant."
},
{
"role": "user",
"content": "Who are you?"
}
],
"stop_token_ids": [128009, 128001]
}'
To use the Gradio UI, open the URL shown in the logs:
(task, pid=17433) Running on public URL: https://xxxxxxxxxx.gradio.live
To stop the instance:
sky stop llama3
To shut down all resources:
sky down llama3
Note: If you would like to try the 8B model, you can use the following accelerators:
resources:
accelerators: {L4, A10g, A10, L40, A40, A100, A100-80GB}
Serving Llama-3: scaling up with SkyServe#
After playing with the model, you can deploy the model with autoscaling and load-balancing using SkyServe.
With no change to the YAML, launch a fully managed service on your infra:
HF_TOKEN=xxx sky serve up llama3.yaml -n llama3 --env HF_TOKEN
Wait until the service is ready:
watch -n10 sky serve status llama3
Example outputs:
Services
NAME VERSION UPTIME STATUS REPLICAS ENDPOINT
llama3 1 35s READY 2/2 xx.yy.zz.100:30001
Service Replicas
SERVICE_NAME ID VERSION IP LAUNCHED RESOURCES STATUS REGION
llama3 1 1 xx.yy.zz.121 18 mins ago 1x GCP([Spot]{'A100-80GB': 4}) READY us-east4
llama3 2 1 xx.yy.zz.245 18 mins ago 1x GCP([Spot]{'A100-80GB': 4}) READY us-east4
Get a single endpoint that load-balances across replicas:
ENDPOINT=$(sky serve status --endpoint llama3)
Tip: SkyServe fully manages the lifecycle of your replicas. For example, if a spot replica is preempted, the controller will automatically replace it. This significantly reduces the operational burden while saving costs.
To curl the endpoint:
curl -L $ENDPOINT/v1/chat/completions \
-H "Content-Type: application/json" \
-d '{
"model": "meta-llama/Meta-Llama-3-70B-Instruct",
"messages": [
{
"role": "system",
"content": "You are a helpful assistant."
},
{
"role": "user",
"content": "Who are you?"
}
]
}'
To shut down all resources:
sky serve down llama3
See more details in SkyServe docs.
Optional: Connect a GUI to your Llama-3 endpoint#
It is also possible to access the Code Llama service with a separate GUI frontend, so the user requests send to the GUI will be load-balanced across replicas.
Start the chat web UI:
sky launch -c llama3-gui ./gui.yaml --env ENDPOINT=$(sky serve status --endpoint llama3)
Then, we can access the GUI at the returned gradio link:
| INFO | stdout | Running on public URL: https://6141e84201ce0bb4ed.gradio.live
Finetuning Llama-3#
You can finetune Llama-3 on your own data. We have an tutorial for finetunning Llama-2 for Vicuna on SkyPilot, which can be adapted for Llama-3. You can find the tutorial here and a detailed blog post here.