Replace ImportError with logging.warning if dpctl version is not met

Author: oleksandr-pavlyk

numba_dpex/config.py

@@ -15,7 +15,10 @@ def _ensure_dpctl():
     from numba_dpex.dpctl_support import dpctl_version
 
     if dpctl_version < (0, 14):
-        raise ImportError("numba_dpex needs dpctl 0.14 or greater")
+        logging.warning(
+            "numba_dpex needs dpctl 0.14 or greater, using "
+            f"dpctl={dpctl_version} may cause unexpected behavior"
+        )
 
 
 def _dpctl_has_non_host_device():

numba_dpex/dpctl_support.py

@@ -4,4 +4,18 @@
 
 import dpctl
 
-dpctl_version = tuple(map(int, dpctl.__version__.split(".")[:2]))
+
+def _parse_version():
+    t = dpctl.__version__.split(".")
+    if len(t) > 1:
+        try:
+            return tuple(map(int, t))
+        except ValueError:
+            return (0, 0)
+    else:
+        return (0, 0)
+
+
+dpctl_version = _parse_version()
+
+del _parse_version