From 9024441566a440abb64774d359aeaad3ed51d083 Mon Sep 17 00:00:00 2001
From: mattijs <mattijs>
Date: Thu, 9 Dec 2021 16:32:50 +0000
Subject: [PATCH] ENH: iglooWithFridges: demonstrate threaded, collated
 handling. See #2194.

---
 .../iglooWithFridges/Allrun                     | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/tutorials/heatTransfer/buoyantBoussinesqSimpleFoam/iglooWithFridges/Allrun b/tutorials/heatTransfer/buoyantBoussinesqSimpleFoam/iglooWithFridges/Allrun
index 7fc364f80e..1badf03590 100755
--- a/tutorials/heatTransfer/buoyantBoussinesqSimpleFoam/iglooWithFridges/Allrun
+++ b/tutorials/heatTransfer/buoyantBoussinesqSimpleFoam/iglooWithFridges/Allrun
@@ -6,8 +6,11 @@ cd "${0%/*}" || exit                                # Run from this directory
 # settings
 
     # flag to enable computations in parallel mode
-    parallel=false
+    parallel=true
 
+    # flag to set up collated writing and threaded writing (with 1Gb write
+    # buffer)
+    fileHandler="-fileHandler collated -opt-switch maxThreadFileBufferSize=-1E9"
 
 #------------------------------------------------------------------------------
 
@@ -24,9 +27,10 @@ cp -f \
 if [ "$parallel" = true ]
 then
 
-    runApplication decomposePar -fileHandler collated
+    runApplication decomposePar $fileHandler
+    #runParallel -s decompose redistributePar -decompose $fileHandler
 
-    runParallel snappyHexMesh -overwrite -fileHandler collated
+    runParallel snappyHexMesh -overwrite $fileHandler
 
     ## Remove any include files from the field dictionaries
     (   mkdir -p processors2/0 && \
@@ -35,14 +39,15 @@ then
         foamDictionary "$f" > "../processors2/0/$f"; done \
     )
 
-    runParallel $(getApplication) -fileHandler collated
+    runParallel $(getApplication) $fileHandler
 
     ## Run reconstructParMesh with collated as well since writes
     ##     constant/polyMesh/cellProcAddressing
-    runApplication reconstructParMesh -constant -fileHandler collated
-
+    runApplication reconstructParMesh -constant $fileHandler
     runApplication reconstructPar
 
+    #runParallel -s reconstruct redistributePar -reconstruct $fileHandler
+
 else
 
     runApplication snappyHexMesh -overwrite