change DPCtrl usage logic out of default (#887)

Author: shssf

dpnp/config.py

@@ -43,12 +43,12 @@
 Explicitly use NumPy.ndarray as return type for creation functions
 '''
 
-__DPNP_OUTPUT_DPCTL_DEFAULT_SHARED__ = int(os.getenv('DPNP_OUTPUT_DPCTL_DEFAULT_SHARED', 0))
+__DPNP_OUTPUT_DPCTL__ = int(os.getenv('DPNP_OUTPUT_DPCTL', 0))
 '''
-Explicitly use SYCL shared memory parameter in DPCtl array constructor for creation functions
+Explicitly use DPCtl package container as return type for creation functions
 '''
 
-__DPNP_DPCTL_AVAILABLE__ = False
+__DPNP_OUTPUT_DPCTL_DEFAULT_SHARED__ = int(os.getenv('DPNP_OUTPUT_DPCTL_DEFAULT_SHARED', 0))
 '''
-Availability of the DPCtl package in the environment
+Explicitly use SYCL shared memory parameter in DPCtl array constructor for creation functions
 '''

dpnp/dpnp_container.py

@@ -40,21 +40,18 @@
 import numpy
 
 
-try:
-    """
-    Detect DPCtl availability to use data container
-    """
-    import dpctl.tensor as dpctl
-
-    config.__DPNP_DPCTL_AVAILABLE__ = True
-
-except ImportError:
-    """
-    No DPCtl data container available
-    """
-    config.__DPNP_DPCTL_AVAILABLE__ = False
+if config.__DPNP_OUTPUT_DPCTL__:
+    try:
+        """
+        Detect DPCtl availability to use data container
+        """
+        import dpctl.tensor as dpctl
 
-# config.__DPNP_DPCTL_AVAILABLE__ = False
+    except ImportError:
+        """
+        No DPCtl data container available
+        """
+        config.__DPNP_OUTPUT_DPCTL__ = 0
 
 
 __all__ = [
@@ -67,7 +64,7 @@ def create_output_container(shape, type):
         """ Create NumPy ndarray """
         # TODO need to use "buffer=" parameter to use SYCL aware memory
         result = numpy.ndarray(shape, dtype=type)
-    elif config.__DPNP_DPCTL_AVAILABLE__:
+    elif config.__DPNP_OUTPUT_DPCTL__:
         """ Create DPCTL array """
         if config.__DPNP_OUTPUT_DPCTL_DEFAULT_SHARED__:
             """

dpnp/dpnp_iface_arraycreation.py

@@ -195,7 +195,7 @@ def array(x1, dtype=None, copy=True, order='C', subok=False, ndmin=0, like=None)
 
     if not dpnp.is_type_supported(dtype) and dtype is not None:
         pass
-    elif config.__DPNP_DPCTL_AVAILABLE__:
+    elif config.__DPNP_OUTPUT_DPCTL__:
         # TODO this is workaround becasue
         # usm_array has no element wise assignment (aka []) and
         # has no "flat" property and