Fix LWS search space used by CLTuner

* Ensure CLTuner uses the real GWS used by run(), instead of the
  static GWS (which is usually changed at run time), by caching GWS in
  each kernel

  Note this is a somewhat inelegant workaround. The real issue stems
  from the fact that execution window and scheduler are very much
  coupled with our operator run() / run_op() method.
  (Please see COMPMID-5934)

* Restrict LWS values to explore within GWS bound for exhaustive mode

* Refactor gws_from_window() to include all the information required
  to calculate GWS

* Log lws search space used for tuning

* Fix ClDirectConv2dKernel config id

Resolves COMPMID-5892

Signed-off-by: SiCong Li <sicong.li@arm.com>
Change-Id: I420490d8b94d13ada2e44eb0a12078f883379334
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9193
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/utils/TypePrinter.h b/utils/TypePrinter.h
index 448f184432..db27ddccde 100644
--- a/utils/TypePrinter.h
+++ b/utils/TypePrinter.h
@@ -1437,6 +1437,36 @@ inline std::string to_string(ICLTensor *cl_tensor)
 {
     return to_string(static_cast<const ICLTensor *>(cl_tensor));
 }
+
+/** Formatted output of the cl::NDRange type.
+ *
+ * @param[out] os       Output stream.
+ * @param[in]  nd_range cl::NDRange to output.
+ *
+ * @return Modified output stream.
+ */
+inline ::std::ostream &operator<<(::std::ostream &os, const cl::NDRange &nd_range)
+{
+    os << "{"
+       << nd_range[0] << ","
+       << nd_range[1] << ","
+       << nd_range[2]
+       << "}";
+    return os;
+}
+
+/** Formatted output of the cl::NDRange type
+ *
+ * @param[in] nd_Range Type to output.
+ *
+ * @return Formatted string.
+ */
+inline std::string to_string(const cl::NDRange &nd_range)
+{
+    std::stringstream str;
+    str << nd_range;
+    return str.str();
+}
 #endif /* ARM_COMPUTE_OPENCL_ENABLED */
 
 /** Formatted output of the Dimensions type.