Pr 2337 ci branch (#2379)

* hotfix: fix xpu crash brought by code refine. torch.xpu rely on import ipex
Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* reable gemma2 in xpu
Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* fix in regression in ipex flashattention
Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

---------
Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>
Co-authored-by: Wang, Yi A <yi.a.wang@intel.com>

server/text_generation_server/layers/attention/ipex.py

@@ -2,6 +2,7 @@ import intel_extension_for_pytorch as ipex
 import torch
 from text_generation_server.models.flash_causal_lm import BLOCK_SIZE
 from text_generation_server.layers.attention import Seqlen
+from typing import Optional
 
 SUPPORTS_WINDOWING = False
 
@@ -15,11 +16,12 @@ def attention(
     softmax_scale,
     window_size_left=-1,
     causal=True,
+    softcap: Optional[float] = None,
 ):
     out = torch.empty_like(q)
 
     # We do not need to check window_size_left (not supported) here, so it is already checked ahead of time at model load.
-    return ipex.llm.functional.varlen_attention(
+    ipex.llm.functional.varlen_attention(
         q,
         k,
         v,
@@ -36,6 +38,8 @@ def attention(
         None,
     )
 
+    return out
+
 
 def reshape_and_cache(
     key: torch.Tensor,
@@ -58,6 +62,7 @@ def paged_attention(
     block_tables: torch.Tensor,
     seqlen: Seqlen,
     max_s: int,
+    softcap: Optional[float] = None,
 ):
     out = torch.empty_like(query)
     ipex.llm.modules.PagedAttention.single_query_cached_kv_attention(

server/text_generation_server/utils/import_utils.py

@@ -56,6 +56,8 @@ elif torch.version.cuda is not None and torch.cuda.is_available():
     get_free_memory = get_cuda_free_memory
 elif is_ipex_available():
     SYSTEM = "ipex"
+    import intel_extension_for_pytorch  # noqa: F401
+
     if hasattr(torch, "xpu") and torch.xpu.is_available():
         empty_cache = torch.xpu.empty_cache
         synchronize = torch.xpu.synchronize