PERF: fix speed regression

Do AdvanceOneStep() single-threadedly, since it is faster most of the times.
SuperElastix · May 30, 2018 · eab944a · eab944a
1 parent ee63725
commit eab944a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/Components/Optimizers/StandardGradientDescent/itkGradientDescentOptimizer2.cxx b/Components/Optimizers/StandardGradientDescent/itkGradientDescentOptimizer2.cxx
@@ -217,7 +217,8 @@ ::AdvanceOneStep( void )
   ParametersType & newPosition = this->m_ScaledCurrentPosition;
 
   /** Advance one step. */
-#ifndef ELASTIX_USE_OPENMP // If no OpenMP detected then use single-threaded code
+#if 1 // force single-threaded since it is fastest most of the times
+//#ifndef ELASTIX_USE_OPENMP // If no OpenMP detected then use single-threaded code
   /** Get a reference to the current position. */
   const ParametersType & currentPosition = this->GetScaledCurrentPosition();