diff --git a/exllamav2/attn.py b/exllamav2/attn.py
index 4370dceb..26f127cb 100644
--- a/exllamav2/attn.py
+++ b/exllamav2/attn.py
@@ -840,7 +840,7 @@ def _attn_torch(self, batch_size, q_len, q_states, k_states, v_states, attn_para
 
         # SDPA
 
-        if has_lower_right_sdpa and attn_params.is_causal() and not cfg.no_sdpa and not cfg.attn_logit_softcapping:
+        if has_lower_right_sdpa and not cfg.no_sdpa and not cfg.attn_logit_softcapping:
 
             k_states = self.repeat_kv(k_states, cfg.num_key_value_groups)
             v_states = self.repeat_kv(v_states, cfg.num_key_value_groups)
@@ -849,7 +849,10 @@ def _attn_torch(self, batch_size, q_len, q_states, k_states, v_states, attn_para
                 k_states = k_states[:, :, -self.sliding_window:, :]
                 v_states = v_states[:, :, -self.sliding_window:, :]
 
-            attn_mask_lr = causal_lower_right(q_len, k_states.shape[2])
+            if attn_params.is_causal():
+                attn_mask_lr = causal_lower_right(q_len, k_states.shape[2])
+            else:
+                attn_mask_lr = attn_params.get_attn_mask(q_states.device)
             attn_output = F.scaled_dot_product_attention(
                 q_states,
                 k_states,
diff --git a/exllamav2/generator/sampler.py b/exllamav2/generator/sampler.py
index 555db71a..9f795c8f 100644
--- a/exllamav2/generator/sampler.py
+++ b/exllamav2/generator/sampler.py
@@ -400,10 +400,17 @@ def prep_logit_filter(lf):
 
             pass_tokens = None
             end_tokens = None
-            for f in filters:
 
+            pts = []
+            ets = []
+            for f in filters:
                 pt, et = f.get_next()
-                if len(filters) > 1 and not isinstance(pt, set):
+                if pt is not None:
+                    pts.append(pt)
+                    ets.append(et)
+
+            for pt, et in zip(pts, ets):
+                if len(pts) > 1 and not isinstance(pt, set):
                     pt, et = set(pt), set(et)
 
                 if pt is not None: pass_tokens = pt if pass_tokens is None else pass_tokens & pt
@@ -425,7 +432,7 @@ def prep_logit_filter(lf):
                 if filter_prefer_eos and tokenizer.eos_token_id in pass_tokens:
                     pass_tokens_list = [tokenizer.eos_token_id]
                     logit_filter = prep_logit_filter(logit_filter)
-                    ext_c.logit_filter_exclusive(logit_filter, pass_tokens_list)
+                    ext_c.logit_filter_exclusive(logit_filter, [pass_tokens_list])
                 else:
                     logit_filter = prep_logit_filter(logit_filter)
                     if isinstance(pass_tokens, set):
diff --git a/exllamav2/tokenizer/tokenizer.py b/exllamav2/tokenizer/tokenizer.py
index 338a90c7..9e8d8d09 100644
--- a/exllamav2/tokenizer/tokenizer.py
+++ b/exllamav2/tokenizer/tokenizer.py
@@ -8,6 +8,16 @@
     ExLlamaV2TokenizerSPM,
     ExLlamaV2TokenizerHF
 )
+import threading
+
+
+lock = threading.RLock()
+def synchronized_init(func):
+    def wrapper(*args, **kwargs):
+        with lock:
+            return func(*args, **kwargs)
+    return wrapper
+
 
 class ExLlamaV2Tokenizer:
 
@@ -20,7 +30,6 @@ def __init__(self, children = None, leaf = None):
             self.children = children if children is not None else {}
             self.leaf = leaf if leaf is not None else []
 
-
     config: ExLlamaV2Config
 
     tokenizer_model: ExLlamaV2TokenizerBase
@@ -567,8 +576,8 @@ def num_tokens(self, text):
 
     # Get ordinals of single-byte tokens
 
+    @synchronized_init
     def get_id_to_ord_list(self):
-
         if self.id_to_ord is not None: return self.id_to_ord
 
         self.id_to_ord = []
@@ -594,6 +603,7 @@ def get_id_to_ord_list(self):
 
     # Copy vocabulary from model
 
+    @synchronized_init
     def get_id_to_piece_list(self, include_special_tokens = False):
 
         if include_special_tokens:
@@ -633,6 +643,7 @@ def get_id_to_piece_list(self, include_special_tokens = False):
         return self.id_to_piece
 
 
+    @synchronized_init
     def get_piece_to_id_dict(self):
 
         if self.piece_to_id is not None: return self.piece_to_id
@@ -644,6 +655,7 @@ def get_piece_to_id_dict(self):
 
     # Create dictionary mapping prefixes to token IDs
 
+    @synchronized_init
     def get_prefix_to_ids_dict(self):
 
         if self.prefix_to_ids is not None: return self.prefix_to_ids
@@ -671,6 +683,7 @@ def get_prefix_to_ids_dict(self):
 
     # Create dictionary mapping each ID to any IDs that it prefixes
 
+    @synchronized_init
     def get_prefix_id_to_ids_dict(self):
 
         if self.prefix_id_to_ids is not None: return self.prefix_id_to_ids
@@ -712,6 +725,7 @@ def _make_trie(self, ci):
         return trie
 
 
+    @synchronized_init
     def get_char_trie(self):
 
         if self.char_trie is not None: return self.char_trie
@@ -720,6 +734,7 @@ def get_char_trie(self):
         return self.char_trie
 
 
+    @synchronized_init
     def get_char_trie_ci(self):
 
         if self.char_trie_ci is not None: return self.char_trie_ci
diff --git a/exllamav2/version.py b/exllamav2/version.py
index 77648b6b..984fc572 100644
--- a/exllamav2/version.py
+++ b/exllamav2/version.py
@@ -1 +1 @@
-__version__ = "0.2.1"
\ No newline at end of file
+__version__ = "0.2.2"
\ No newline at end of file