update timings

src/hyteg/ginkgo/GinkgoBlockSolver.hpp

@@ -204,12 +204,12 @@ class GinkgoBlockSolver : public Solver< OperatorType >
       monolithic_matrix_ = gko::share( csr::create( solver_exec_ ) );
       gko::as< mtx >( host_monolithic_matrix_ )->convert_to( monolithic_matrix_.get() );
       x.getStorage()->getTimingTree()->stop( "Ginkgo CG Solver Gather matrix" );
-      x.getStorage()->getTimingTree()->start( "Ginkgo CG Solver Permute matrix" );
       if ( comm_->size() > 1 && monolithic_matrix_->get_size() )
       {
+         x.getStorage()->getTimingTree()->start( "Ginkgo CG Solver Permute matrix" );
          monolithic_matrix_ = gko::as< csr >( monolithic_matrix_->permute( &perm ) );
+         x.getStorage()->getTimingTree()->stop( "Ginkgo CG Solver Permute matrix" );
       }
-      x.getStorage()->getTimingTree()->stop( "Ginkgo CG Solver Permute matrix" );
 
       {
          x.getStorage()->getTimingTree()->start( "Ginkgo CG Solver Gather preconditioner" );
@@ -354,9 +354,9 @@ class GinkgoBlockSolver : public Solver< OperatorType >
       x0->convert_to( gko::lend( global_x0 ) );
       x.getStorage()->getTimingTree()->stop( "Ginkgo CG Solver Gather vectors" );
 
-      x.getStorage()->getTimingTree()->start( "Ginkgo CG Solver Apply" );
       if ( monolithic_matrix_->get_size() )
       {
+         x.getStorage()->getTimingTree()->start( "Ginkgo CG Solver Apply" );
          if ( comm_->size() > 1 )
          {
             auto permuted_global_rhs = gko::as< dense >( global_rhs->row_permute( &perm ) );
@@ -368,9 +368,9 @@ class GinkgoBlockSolver : public Solver< OperatorType >
          {
             solver_->apply( gko::lend( global_rhs ), gko::lend( global_x0 ) );
          }
+         x.getStorage()->getTimingTree()->stop( "Ginkgo CG Solver Apply" );
       }
       WALBERLA_MPI_BARRIER();
-      x.getStorage()->getTimingTree()->stop( "Ginkgo CG Solver Apply" );
 
       x.getStorage()->getTimingTree()->start( "Ginkgo CG Solver Scatter vectors" );
       gather_idxs_ = compute_gather_idxs( part_ );