Changing behaviour for allocate_vector

NEWS.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Changed how `allocate_vector` works. Now it only allocates, instead of allocating+initialising to zero. Since PR[#963](https://github.com/gridap/Gridap.jl/pull/963).
+
 ## [0.17.21] - 2023-12-04
 
 ### Added

src/Algebra/AlgebraInterfaces.jl

@@ -37,8 +37,7 @@ function allocate_vector(::Type{V},indices) where V
 end
 
 function allocate_vector(::Type{V},n::Integer) where V
-  T = eltype(V)
-  zeros(T,n)
+  V(undef,n)
 end
 
 function allocate_vector(::Type{<:BlockVector{T,VV}},indices::BlockedUnitRange) where {T,VV}
@@ -86,7 +85,7 @@ end
 Allocate a vector in the domain of matrix `matrix`.
 """
 function allocate_in_domain(matrix::AbstractMatrix{T}) where T
-  allocate_in_range(Vector{T},matrix)
+  allocate_in_domain(Vector{T},matrix)
 end
 
 function allocate_in_domain(matrix::BlockMatrix{T}) where T

src/FESpaces/FESpaceInterface.jl

@@ -87,7 +87,9 @@ num_free_dofs(f::FESpace) = length(get_free_dof_ids(f))
 """
 function zero_free_values(f::FESpace)
   V = get_vector_type(f)
-  allocate_vector(V,num_free_dofs(f))
+  free_values = allocate_vector(V,get_free_dof_ids(f))
+  fill!(free_values,zero(eltype(V)))
+  return free_values
 end
 
 function get_vector_type(fs::FESpace)

src/FESpaces/SingleFieldFESpaces.jl

@@ -16,7 +16,9 @@ num_dirichlet_dofs(f::SingleFieldFESpace) = length(get_dirichlet_dof_ids(f))
 """
 function zero_dirichlet_values(f::SingleFieldFESpace)
   V = get_vector_type(f)
-  allocate_vector(V,num_dirichlet_dofs(f))
+  dir_values = allocate_vector(V,num_dirichlet_dofs(f))
+  fill!(dir_values,zero(eltype(V)))
+  return dir_values
 end
 
 """

src/FESpaces/UnconstrainedFESpaces.jl

@@ -48,7 +48,6 @@ end
 
 ConstraintStyle(::Type{<:UnconstrainedFESpace}) = UnConstrained()
 get_free_dof_ids(f::UnconstrainedFESpace) = Base.OneTo(f.nfree)
-zero_free_values(f::UnconstrainedFESpace) = allocate_vector(f.vector_type,num_free_dofs(f))
 get_fe_basis(f::UnconstrainedFESpace) = f.fe_basis
 get_fe_dof_basis(f::UnconstrainedFESpace) = f.fe_dof_basis
 get_cell_dof_ids(f::UnconstrainedFESpace) = f.cell_dofs_ids
@@ -61,7 +60,6 @@ get_cell_is_dirichlet(f::UnconstrainedFESpace) = f.cell_is_dirichlet
 
 get_dirichlet_dof_ids(f::UnconstrainedFESpace) = Base.OneTo(f.ndirichlet)
 num_dirichlet_tags(f::UnconstrainedFESpace) = f.ntags
-zero_dirichlet_values(f::UnconstrainedFESpace) = allocate_vector(f.vector_type,num_dirichlet_dofs(f))
 get_dirichlet_dof_tag(f::UnconstrainedFESpace) = f.dirichlet_dof_tag
 
 function scatter_free_and_dirichlet_values(f::UnconstrainedFESpace,free_values,dirichlet_values)

src/MultiField/MultiFieldFESpaces.jl

@@ -137,13 +137,6 @@ function FESpaces.get_free_dof_ids(f::MultiFieldFESpace,::BlockMultiFieldStyle{N
   return BlockArrays.blockedrange(block_num_dofs)
 end
 
-function FESpaces.zero_free_values(f::MultiFieldFESpace{<:BlockMultiFieldStyle{NB,SB,P}}) where {NB,SB,P}
-  block_ranges   = get_block_ranges(NB,SB,P)
-  block_num_dofs = map(range->sum(map(num_free_dofs,f.spaces[range])),block_ranges)
-  block_vtypes   = map(range->get_vector_type(first(f.spaces[range])),block_ranges)
-  return mortar(map(allocate_vector,block_vtypes,block_num_dofs))
-end
-
 FESpaces.get_dof_value_type(f::MultiFieldFESpace{MS,CS,V}) where {MS,CS,V} = eltype(V)
 
 FESpaces.get_vector_type(f::MultiFieldFESpace) = f.vector_type

src/ODEs/TransientFETools/TransientFESpaces.jl

@@ -206,7 +206,9 @@ function zero_free_values(f::TransientMultiFieldTrialFESpace{<:BlockMultiFieldSt
   block_ranges   = get_block_ranges(NB,SB,P)
   block_num_dofs = map(range->sum(map(num_free_dofs,f.spaces[range])),block_ranges)
   block_vtypes   = map(range->get_vector_type(first(f.spaces[range])),block_ranges)
-  return mortar(map(allocate_vector,block_vtypes,block_num_dofs))
+  values = mortar(map(allocate_vector,block_vtypes,block_num_dofs))
+  fill!(values,zero(eltype(values)))
+  return values
 end
 
 get_dof_value_type(f::TransientMultiFieldTrialFESpace{MS,CS,V}) where {MS,CS,V} = eltype(V)