Update README.md

README.md

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+## Installation from source
+
+```bash
+git clone https://github.com/foundation-model-stack/fms-extras
+cd fms-extras
+pip install -e .
+```
+
+
+## Description
+
+This model is intended to be used as an accelerator for [granite 7B (instruct lab)](https://huggingface.co/instructlab/granite-7b-lab) and takes inspiration 
+from the Medusa speculative decoding architecture. This accelerator modifies the MLP into a multi-stage MLP, where each stage predicts 
+a single token in the draft based on both a state vector and sampled token
+from the prior stage (the base model can be considered stage 0).
+The state vector from the base model provides contextual information to the accelerator, 
+while conditioning on prior sampled tokens allows it to produce higher-quality draft n-grams.
+
+Note: The underlying MLP speculator is a generic architecture that can be trained with any generative model to accelerate inference. 
+Training is light-weight and can be completed in only a few days depending on base model size and speed.
+
+## Repository Links
+
+1. [Paged Attention KV-Cache / Speculator](https://github.com/foundation-model-stack/fms-extras)
+2. [Production Server with speculative decoding](https://github.com/IBM/text-generation-inference.git)
+3. [Speculator training](https://github.com/foundation-model-stack/fms-fsdp/pull/35)
+
+## Samples
+
+_Note: For all samples, your environment must have access to cuda_
+
+### Production Server Sample
+
+*To try this out running in a production-like environment, please use the pre-built docker image:*
+
+#### Setup
+
+```bash
+HF_HUB_CACHE=/hf_hub_cache
+chmod a+w $HF_HUB_CACHE
+HF_HUB_TOKEN="your huggingface hub token"
+TGIS_IMAGE=quay.io/wxpe/text-gen-server:main.ee927a4
+
+docker pull $TGIS_IMAGE
+
+# optionally download granite-7b-lab if the weights do not already exist
+docker run --rm \
+    -v $HF_HUB_CACHE:/models \
+    -e HF_HUB_CACHE=/models \
+    -e TRANSFORMERS_CACHE=/models \
+    $TGIS_IMAGE \
+    text-generation-server download-weights \
+    instructlab/granite-7b-lab \
+    --token $HF_HUB_TOKEN
+
+# optionally download the speculator model if the weights do not already exist
+docker run --rm \
+    -v $HF_HUB_CACHE:/models \
+    -e HF_HUB_CACHE=/models \
+    -e TRANSFORMERS_CACHE=/models \
+    $TGIS_IMAGE \
+    text-generation-server download-weights \
+    ibm/granite-7b-lab-accelerator \
+    --token $HF_HUB_TOKEN
+
+# note: if the weights were downloaded separately (not with the above commands), please place them in the HF_HUB_CACHE directoy and refer to them with /models/<model_name>
+docker run -d --rm --gpus all \
+    --name my-tgis-server \
+    -p 8033:8033 \
+    -v $HF_HUB_CACHE:/models \
+    -e HF_HUB_CACHE=/models \
+    -e TRANSFORMERS_CACHE=/models \
+    -e MODEL_NAME=instructlab/granite-7b-lab \
+    -e SPECULATOR_NAME=ibm/granite-7b-lab-accelerator \
+    -e FLASH_ATTENTION=true \
+    -e PAGED_ATTENTION=true \
+    -e DTYPE=float16 \
+    $TGIS_IMAGE
+
+# check logs and wait for "gRPC server started on port 8033" and "HTTP server started on port 3000"
+docker logs my-tgis-server -f
+
+# get the client sample (Note: The first prompt will take longer as there is a warmup time)
+conda create -n tgis-client-env python=3.11
+conda activate tgis-client-env
+git clone --branch main --single-branch https://github.com/IBM/text-generation-inference.git
+cd text-generation-inference/integration_tests
+make gen-client
+pip install . --no-cache-dir
+```
+
+#### Run Sample
+
+```bash
+python sample_client.py
+```
+
+_Note: first prompt may be slower as there is a slight warmup time_
+
+### Minimal Sample
+
+*To try this out with the fms-native compiled model, please execute the following:*
+
+#### Install
+
+```bash
+git clone --branch ibm_7b_instruct_lab_variant --single-branch https://github.com/JRosenkranz/fms-extras.git
+(cd fms-extras && pip install -e .)
+pip install transformers==4.35.0 sentencepiece numpy
+```
+
+#### Run Sample
+
+##### batch_size=1 (compile + cudagraphs)
+
+```bash
+MODEL_PATH=/path/to/instructlab/granite-7b-lab
+python fms-extras/scripts/paged_speculative_inference.py \
+    --variant=ibm.7b_instruct_lab \
+    --model_path=$MODEL_PATH \
+    --model_source=hf \
+    --tokenizer=$MODEL_PATH \
+    --speculator_path=ibm/granite-7b-lab-accelerator \
+    --speculator_source=hf \
+    --top_k_tokens_per_head=4,3,2,2,2 \
+    --compile \
+    --compile_mode=reduce-overhead
+```
+
+##### batch_size=1 (compile)
+
+```bash
+MODEL_PATH=/path/to/instructlab/granite-7b-lab
+python fms-extras/scripts/paged_speculative_inference.py \
+    --variant=ibm.7b_instruct_lab \
+    --model_path=$MODEL_PATH \
+    --model_source=hf \
+    --tokenizer=$MODEL_PATH \
+    --speculator_path=ibm/granite-7b-lab-accelerator \
+    --speculator_source=hf \
+    --top_k_tokens_per_head=4,3,2,2,2 \
+    --compile \
+```
+
+##### batch_size=4 (compile)
+
+```bash
+MODEL_PATH=/path/to/instructlab/granite-7b-lab
+python fms-extras/scripts/paged_speculative_inference.py \
+    --variant=ibm.7b_instruct_lab \
+    --model_path=$MODEL_PATH \
+    --model_source=hf \
+    --tokenizer=$MODEL_PATH \
+    --speculator_path=ibm/granite-7b-lab-accelerator \
+    --speculator_source=hf \
+    --top_k_tokens_per_head=4,3,2,2,2 \
+    --batch_input \
+    --compile \
+```
+
+Sample code can be found [here](https://github.com/foundation-model-stack/fms-extras/blob/main/scripts/paged_speculative_inference.py)