diff --git a/.gitmodules b/.gitmodules
index faac9f2..2725566 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,11 +13,11 @@
 [submodule "models/pdaf"]
 	path = models/pdaf
 	url = https://github.com/HPSCTerrSys/pdaf.git
-	branch = tsmp-pdaf-patched
+	branch = tsmp-pdaf-patched-parallel-build
 [submodule "models/eCLM"]
 	path = models/eCLM
 	url = https://github.com/HPSCTerrSys/eCLM.git
-	branch = beta-0.7
+	branch = master-parallel-build
 [submodule "models/oasis3-mct"]
         path = models/oasis3-mct
         url = https://icg4geo.icg.kfa-juelich.de/ExternalReposPublic/oasis3-mct
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d077b8f..c6ec4ab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.28)
+cmake_minimum_required (VERSION 3.26)
 project(TSMP2 LANGUAGES C CXX Fortran)
 include(ExternalProject)
 
diff --git a/cmake/BuildPDAF.cmake b/cmake/BuildPDAF.cmake
index a653e44..b89685c 100644
--- a/cmake/BuildPDAF.cmake
+++ b/cmake/BuildPDAF.cmake
@@ -278,8 +278,8 @@ ExternalProject_Add(PDAF
   PREFIX            PDAF
   SOURCE_DIR        ${PDAF_SRC}
   BUILD_IN_SOURCE   TRUE
-  CONFIGURE_COMMAND ""
-  BUILD_COMMAND     make ${PDAF_ENV_VARS} clean directories libpdaf
+  CONFIGURE_COMMAND $(MAKE) ${PDAF_ENV_VARS} clean directories
+  BUILD_COMMAND     $(MAKE) ${PDAF_ENV_VARS} -j ${PARALLEL_JOBS} libpdaf
   INSTALL_COMMAND   ""
   DEPENDS           ${PDAF_DEPENDENCIES}
 )
diff --git a/cmake/BuildPDAFFRAMEWORK.cmake b/cmake/BuildPDAFFRAMEWORK.cmake
index 81652f8..b1cf1fb 100644
--- a/cmake/BuildPDAFFRAMEWORK.cmake
+++ b/cmake/BuildPDAFFRAMEWORK.cmake
@@ -33,8 +33,8 @@ ExternalProject_Add(PDAF-Framework
   PREFIX            PDAF-Framework
   SOURCE_DIR        ${PDAF_SRC}/interface/framework
   BUILD_IN_SOURCE   TRUE
-  CONFIGURE_COMMAND ""
-  BUILD_COMMAND     make ${PDAFFRAMEWORK_ENV_VARS} clean all
+  CONFIGURE_COMMAND $(MAKE) ${PDAFFRAMEWORK_ENV_VARS} clean
+  BUILD_COMMAND     $(MAKE) ${PDAFFRAMEWORK_ENV_VARS} -j ${PARALLEL_JOBS} all
   INSTALL_COMMAND   ""
   DEPENDS           PDAF-Model
 )
diff --git a/cmake/BuildPDAFMODEL.cmake b/cmake/BuildPDAFMODEL.cmake
index 49345e6..3e7608a 100644
--- a/cmake/BuildPDAFMODEL.cmake
+++ b/cmake/BuildPDAFMODEL.cmake
@@ -213,8 +213,8 @@ ExternalProject_Add(PDAF-Model
   PREFIX            PDAF-Model
   SOURCE_DIR        ${PDAF_SRC}/interface/model
   BUILD_IN_SOURCE   TRUE
-  CONFIGURE_COMMAND ""
-  BUILD_COMMAND     make ${PDAFMODEL_ENV_VARS} clean all
+  CONFIGURE_COMMAND $(MAKE) ${PDAFMODEL_ENV_VARS} clean
+  BUILD_COMMAND     $(MAKE) ${PDAFMODEL_ENV_VARS} -j ${PARALLEL_JOBS} all
   INSTALL_COMMAND   ""
   DEPENDS           PDAF
 )
diff --git a/models/eCLM b/models/eCLM
index 81bc52f..8d9ca1e 160000
--- a/models/eCLM
+++ b/models/eCLM
@@ -1 +1 @@
-Subproject commit 81bc52f4d0e9275f8b87d186978e8198093b4927
+Subproject commit 8d9ca1ea7a3418335527568417a889ef3f259634
diff --git a/models/pdaf b/models/pdaf
index 43eb07e..e6ffbba 160000
--- a/models/pdaf
+++ b/models/pdaf
@@ -1 +1 @@
-Subproject commit 43eb07e9f31ec49765f1c9e6a563b20eaba63395
+Subproject commit e6ffbba7d7d0f21b173571a1a9efbf1a93d9d98e