From 32a877d2362ee87f28d83963e0981c2ed00f8445 Mon Sep 17 00:00:00 2001
From: Will Bainbridge <http://cfd.direct>
Date: Fri, 28 Jul 2023 14:43:26 +0100
Subject: [PATCH] polyMesh: Prevent "no points/cells" warnings on processor
 cases

---
 src/OpenFOAM/meshes/polyMesh/polyMesh.C | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/OpenFOAM/meshes/polyMesh/polyMesh.C b/src/OpenFOAM/meshes/polyMesh/polyMesh.C
index a6bf559568..cea4f62144 100644
--- a/src/OpenFOAM/meshes/polyMesh/polyMesh.C
+++ b/src/OpenFOAM/meshes/polyMesh/polyMesh.C
@@ -326,12 +326,13 @@ Foam::polyMesh::polyMesh(const IOobject& io)
     boundary_.calcGeometry();
 
     // Warn if global empty mesh
-    if (returnReduce(nPoints(), sumOp<label>()) == 0)
+    const bool complete = Pstream::parRun() || !time().processorCase();
+    if (complete && returnReduce(nPoints(), sumOp<label>()) == 0)
     {
         WarningInFunction
             << "no points in mesh" << endl;
     }
-    if (returnReduce(nCells(), sumOp<label>()) == 0)
+    if (complete && returnReduce(nCells(), sumOp<label>()) == 0)
     {
         WarningInFunction
             << "no cells in mesh" << endl;