From bde7da74191965a0247d932585ead6254b0813e7 Mon Sep 17 00:00:00 2001
From: Karl Pierce <kmp5@vt.edu>
Date: Wed, 25 Oct 2023 11:43:37 -0400
Subject: [PATCH] [NDTensors] Fix CPU performance issue caused by bad mul
 dispatch (#1218)

---
 NDTensors/src/abstractarray/iswrappedarray.jl | 1 +
 NDTensors/src/array/permutedims.jl            | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/NDTensors/src/abstractarray/iswrappedarray.jl b/NDTensors/src/abstractarray/iswrappedarray.jl
index e1be8987e5..e601e478a2 100644
--- a/NDTensors/src/abstractarray/iswrappedarray.jl
+++ b/NDTensors/src/abstractarray/iswrappedarray.jl
@@ -33,6 +33,7 @@ parenttype(::Type{<:UnitUpperTriangular{<:Any,P}}) where {P} = P
 parenttype(::Type{<:UnitLowerTriangular{<:Any,P}}) where {P} = P
 parenttype(::Type{<:Diagonal{<:Any,P}}) where {P} = P
 parenttype(::Type{<:SubArray{<:Any,<:Any,P}}) where {P} = P
+parenttype(::Type{<:StridedView{<:Any,<:Any,P}}) where {P} = P
 
 # For working with instances, not used by
 # `SimpleTraits.jl` traits dispatch.
diff --git a/NDTensors/src/array/permutedims.jl b/NDTensors/src/array/permutedims.jl
index 7a033201fb..7a5c52dc14 100644
--- a/NDTensors/src/array/permutedims.jl
+++ b/NDTensors/src/array/permutedims.jl
@@ -1,6 +1,9 @@
 # NDTensors.permutedims
 function permutedims(::Type{<:Array}, M, perm)
-  return @strided Base.permutedims(M, perm)
+  ## Creating Mperm here to evaluate the permutation and
+  ## avoid returning a Stridedview
+  @strided Mperm = Base.permutedims(M, perm)
+  return Mperm
 end
 
 # NDTensors.permutedims!