diff --git a/prover/proof_search.py b/prover/proof_search.py
index 347a978..e86aa6f 100644
--- a/prover/proof_search.py
+++ b/prover/proof_search.py
@@ -336,8 +336,8 @@ def initialize(self) -> None:
         engine_args = AsyncEngineArgs(
             model=self.model_path,
             tensor_parallel_size=self.num_gpus,
-            max_num_batched_tokens=8192,
-            enable_chunked_prefill=False,
+            max_num_batched_tokens=2048,
+            enable_chunked_prefill=True,
         )
         self.engine = AsyncLLMEngine.from_engine_args(engine_args)
 
@@ -394,17 +394,11 @@ def __init__(
             tac_gen = VllmGenerator(vllm_actor)
         elif indexed_corpus_path is not None:
             tac_gen = RetrievalAugmentedGenerator(
-                gen_ckpt_path,
-                ret_ckpt_path,
-                indexed_corpus_path,
-                device,
-                max_num_retrieved=100,
+                gen_ckpt_path, ret_ckpt_path, indexed_corpus_path, device, max_num_retrieved=100
             )
         else:
             device = torch.device("cuda") if num_gpus > 0 else torch.device("cpu")
-            tac_gen = HuggingFaceGenerator(
-                gen_ckpt_path, device, max_oup_seq_len, length_penalty
-            )
+            tac_gen = HuggingFaceGenerator(gen_ckpt_path, device, max_oup_seq_len, length_penalty)
 
         self.distributed = num_workers > 1
         if not self.distributed:
diff --git a/retrieval/index.py b/retrieval/index.py
index 783eb63..c7b51b7 100644
--- a/retrieval/index.py
+++ b/retrieval/index.py
@@ -30,7 +30,7 @@ def main() -> None:
         device = torch.device("cpu")
     else:
         device = torch.device("cuda")
-    model = PremiseRetriever.load_hf(args.ckpt_path, device, num_retrieved=100)
+    model = PremiseRetriever.load_hf(args.ckpt_path, device, max_seq_len=2048)
     model.load_corpus(args.corpus_path)
     model.reindex_corpus(batch_size=args.batch_size)
 
diff --git a/retrieval/model.py b/retrieval/model.py
index 972dc84..900427e 100644
--- a/retrieval/model.py
+++ b/retrieval/model.py
@@ -9,7 +9,7 @@
 from loguru import logger
 import pytorch_lightning as pl
 import torch.nn.functional as F
-from typing import List, Dict, Any, Tuple, Union
+from typing import List, Dict, Any, Tuple, Union, Optional
 from transformers import AutoModelForTextEncoding, AutoTokenizer
 
 from common import (
@@ -51,10 +51,12 @@ def load(cls, ckpt_path: str, device, freeze: bool) -> "PremiseRetriever":
 
     @classmethod
     def load_hf(
-        cls, ckpt_path: str, device, dtype, num_retrieved: int
+        cls, ckpt_path: str, device: int, dtype = None, max_seq_len: Optional[int] = None
     ) -> "PremiseRetriever":
+        if max_seq_len is None:
+            max_seq_len = 999999999999
         model = (
-            PremiseRetriever(ckpt_path, 0.0, 0, 999999999999, num_retrieved)
+            PremiseRetriever(ckpt_path, 0.0, 0, max_seq_len, 100)
             .to(device)
             .eval()
         )