ENH: Added `show_runtime`

1. Information is derived with the help of `threadpoolctl` library.
2. In case `threadpoolctl` is not installed, a message is displayed
   with help on how to install it.
3. SIMD related information is derived from `__cpu_features__`,
   `__cpu_baseline__` and `__cpu_dispatch__`

1 files changed, 78 insertions, 1 deletions

diff --git a/numpy/lib/utils.py b/numpy/lib/utils.py
index e8f4952d3..479535dcc 100644
--- a/numpy/lib/utils.py
+++ b/numpy/lib/utils.py
@@ -13,9 +13,86 @@ import numpy as np
 __all__ = [
     'issubclass_', 'issubsctype', 'issubdtype', 'deprecate',
     'deprecate_with_doc', 'get_include', 'info', 'source', 'who',
-    'lookfor', 'byte_bounds', 'safe_eval'
+    'lookfor', 'byte_bounds', 'safe_eval', 'show_runtime'
     ]
 
+
+def show_runtime():
+    """
+    Print information about various resources in the system
+    including available intrinsic support and BLAS/LAPACK library
+    in use
+
+    See Also
+    --------
+    show_config : Show libraries in the system on which NumPy was built.
+
+    Notes
+    -----
+    1. Information is derived with the help of `threadpoolctl`
+       library.
+    2. SIMD related information is derived from `__cpu_features__`,
+       `__cpu_baseline__` and `__cpu_dispatch__`
+
+    Examples
+    --------
+    >>> import numpy as np
+    >>> np.show_runtime()
+    [{'simd_extensions': {'baseline': ['SSE', 'SSE2', 'SSE3'],
+                          'found': ['SSSE3',
+                                    'SSE41',
+                                    'POPCNT',
+                                    'SSE42',
+                                    'AVX',
+                                    'F16C',
+                                    'FMA3',
+                                    'AVX2'],
+                          'not_found': ['AVX512F',
+                                        'AVX512CD',
+                                        'AVX512_KNL',
+                                        'AVX512_KNM',
+                                        'AVX512_SKX',
+                                        'AVX512_CLX',
+                                        'AVX512_CNL',
+                                        'AVX512_ICL']}},
+     {'architecture': 'Zen',
+      'filepath': '/usr/lib/x86_64-linux-gnu/openblas-pthread/libopenblasp-r0.3.20.so',
+      'internal_api': 'openblas',
+      'num_threads': 12,
+      'prefix': 'libopenblas',
+      'threading_layer': 'pthreads',
+      'user_api': 'blas',
+      'version': '0.3.20'}]
+    """
+    from numpy.core._multiarray_umath import (
+        __cpu_features__, __cpu_baseline__, __cpu_dispatch__
+    )
+    from pprint import pprint
+    config_found = []
+    features_found, features_not_found = [], []
+    for feature in __cpu_dispatch__:
+        if __cpu_features__[feature]:
+            features_found.append(feature)
+        else:
+            features_not_found.append(feature)
+    config_found.append({
+        "simd_extensions": {
+            "baseline": __cpu_baseline__,
+            "found": features_found,
+            "not_found": features_not_found
+        }
+    })
+    try:
+        from threadpoolctl import threadpool_info
+        config_found.extend(threadpool_info())
+    except ImportError:
+        print("WARNING: `threadpoolctl` not found in system!"
+              " Install it by `pip install threadpoolctl`."
+              " Once installed, try `np.show_runtime` again"
+              " for more detailed build information")
+    pprint(config_found)
+
+
 def get_include():
     """
     Return the directory that contains the NumPy \\*.h header files.