diff --git a/Applications/Utils/TestReorderMesh.smk b/Applications/Utils/TestReorderMesh.smk
index 932825d00679f579518eda3ce7a0bab0063ac04d..e3031b702fc3593c61cf1fe3d69f626030c6c3d6 100644
--- a/Applications/Utils/TestReorderMesh.smk
+++ b/Applications/Utils/TestReorderMesh.smk
@@ -77,7 +77,7 @@ rule execute_ogs:
"""
(
cd cube_1x1x1_{wildcards.type}_{wildcards.lx}x{wildcards.ly}x{wildcards.lz}_{wildcards.number_of_partitions}
- mpirun -np {wildcards.number_of_partitions} ogs {prj_base_name}.prj -o results/
+ mpirun --bind-to none -np {wildcards.number_of_partitions} ogs {prj_base_name}.prj -o results/
)
"""
diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index bb27b9e14a494b55fa7043b836c88a9125ad0e9f..9cb270c635c6394cba92ee1a02d74e718e5e9ba7 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -177,7 +177,7 @@ add_custom_target(tests-cleanup ${CMAKE_COMMAND} -E remove -f testrunner.xml)
if(OGS_USE_PETSC)
if("${HOSTNAME}" MATCHES "frontend.*")
- set(MPIRUN_ARGS --mca btl_openib_allow_ib 1)
+ set(MPIRUN_ARGS --mca btl_openib_allow_ib 1 --bind-to none)
endif()
set(TEST_FILTER_MPI --gtest_filter=-MPITest*)
add_custom_target(tests
diff --git a/Tests/Data/Notebooks/SimplePETSc.ipynb b/Tests/Data/Notebooks/SimplePETSc.ipynb
index ec40a12f87fc724c000377b8612c8b1f7b66e61d..762e5f8468df860f2b41adce18438a27d7fba620 100644
--- a/Tests/Data/Notebooks/SimplePETSc.ipynb
+++ b/Tests/Data/Notebooks/SimplePETSc.ipynb
@@ -42,8 +42,8 @@
"if not out_dir.exists():\n",
" out_dir.mkdir(parents=True)\n",
"\n",
- "print(f\"mpirun -np 2 ogs {prj_file} > out.txt\")\n",
- "! mpirun -np 2 ogs {prj_file} > out.txt\n",
+ "print(f\"mpirun --bind-to none -np 2 ogs {prj_file} > out.txt\")\n",
+ "! mpirun --bind-to none -np 2 ogs {prj_file} > out.txt\n",
"\n",
"from datetime import datetime\n",
"\n",
diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/DecayChain.ipynb b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/DecayChain.ipynb
index 2f6b2306b5787af2fec32fec44e002b4688590b5..1d1484c314e197986b2b2d9ebb38a9048ffa49fd 100644
--- a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/DecayChain.ipynb
+++ b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/DecayChain.ipynb
@@ -1354,9 +1354,9 @@
"name": "stdout",
"output_type": "stream",
"text": [
- "mpirun -np 4 ogs ./GlobalImplicitApproach/MPI/4Processors/1d_decay_chain_GIA.prj -o _out > out.txt\n",
+ "mpirun --bind-to none -np 4 ogs ./GlobalImplicitApproach/MPI/4Processors/1d_decay_chain_GIA.prj -o _out > out.txt\n",
"Execution time for the parallelized GIA model with 4 processors is 91.26 s\n",
- "mpirun -np 8 ogs ./GlobalImplicitApproach/MPI/8Processors/1d_decay_chain_GIA.prj -o _out > out.txt\n",
+ "mpirun --bind-to none -np 8 ogs ./GlobalImplicitApproach/MPI/8Processors/1d_decay_chain_GIA.prj -o _out > out.txt\n",
"--------------------------------------------------------------------------\n",
"There are not enough slots available in the system to satisfy the 8\n",
"slots that were requested by the application:\n",
@@ -1404,9 +1404,9 @@
"prj_file_GIA_4 = f\"./GlobalImplicitApproach/MPI/4Processors/{prj_name}_GIA.prj\"\n",
"prj_file_GIA_8 = f\"./GlobalImplicitApproach/MPI/8Processors/{prj_name}_GIA.prj\"\n",
"\n",
- "print(f\"mpirun -np 4 ogs {prj_file_GIA_4} -o {out_dir} > out.txt\")\n",
+ "print(f\"mpirun --bind-to none -np 4 ogs {prj_file_GIA_4} -o {out_dir} > out.txt\")\n",
"start_time = time.time()\n",
- "! mpirun -np 4 ogs {prj_file_GIA_4} -o {out_dir} > {out_dir}/out.txt\n",
+ "! mpirun --bind-to none -np 4 ogs {prj_file_GIA_4} -o {out_dir} > {out_dir}/out.txt\n",
"end_time = time.time()\n",
"runtime_GIA_4 = round(end_time - start_time, 2)\n",
"print(\n",
@@ -1415,9 +1415,9 @@
" \"s\",\n",
")\n",
"\n",
- "print(f\"mpirun -np 8 ogs {prj_file_GIA_8} -o {out_dir} > out.txt\")\n",
+ "print(f\"mpirun --bind-to none -np 8 ogs {prj_file_GIA_8} -o {out_dir} > out.txt\")\n",
"start_time = time.time()\n",
- "! mpirun -np 8 ogs {prj_file_GIA_8} -o {out_dir} > {out_dir}/out.txt\n",
+ "! mpirun --bind-to none -np 8 ogs {prj_file_GIA_8} -o {out_dir} > {out_dir}/out.txt\n",
"end_time = time.time()\n",
"runtime_GIA_8 = round(end_time - start_time, 2)\n",
"print(\n",
diff --git a/Tests/Data/PhaseField/PForthotropy_jupyter_notebook/sen_shear.ipynb b/Tests/Data/PhaseField/PForthotropy_jupyter_notebook/sen_shear.ipynb
index 06271057ae121df064f7e09ac070ae4b6b87dabc..e6cec7ccb9aa893b7853d39798e01353af65ad94 100644
--- a/Tests/Data/PhaseField/PForthotropy_jupyter_notebook/sen_shear.ipynb
+++ b/Tests/Data/PhaseField/PForthotropy_jupyter_notebook/sen_shear.ipynb
@@ -207,7 +207,7 @@
" t0 = time.time()\n",
" if MPI:\n",
" print(f\" > OGS started execution with MPI - {ncores} cores...\")\n",
- " ! mpirun -np {ncores} ogs {out_dir}/{prj_name} -o {output_dir} >> {logfile}\n",
+ " ! mpirun --bind-to none -np {ncores} ogs {out_dir}/{prj_name} -o {output_dir} >> {logfile}\n",
" else:\n",
" print(\" > OGS started execution - \")\n",
" ! ogs {out_dir}/{prj_name} -o {output_dir} >> {logfile}\n",
diff --git a/Tests/Data/PhaseField/tpb_jupyter_notebook/TPB.ipynb b/Tests/Data/PhaseField/tpb_jupyter_notebook/TPB.ipynb
index 6c28d09353c472f91b5afea40b8d47448f504ca4..977a1a5475778d04eb273e5f80266480049a0911 100644
--- a/Tests/Data/PhaseField/tpb_jupyter_notebook/TPB.ipynb
+++ b/Tests/Data/PhaseField/tpb_jupyter_notebook/TPB.ipynb
@@ -203,7 +203,7 @@
" t0 = time.time()\n",
" if MPI:\n",
" print(f\" > OGS started execution with MPI - {ncores} cores...\")\n",
- " ! mpirun -np {ncores} ogs {out_dir}/{prj_name} -o {output_dir} >> {logfile}\n",
+ " ! mpirun --bind-to none -np {ncores} ogs {out_dir}/{prj_name} -o {output_dir} >> {logfile}\n",
" else:\n",
" print(\" > OGS started execution ...\")\n",
" ! ogs {out_dir}/{prj_name} -o {output_dir} >> {logfile}\n",
diff --git a/Tests/Data/Utils/partmesh/partmesh_roundtrip.md b/Tests/Data/Utils/partmesh/partmesh_roundtrip.md
index ebf618bcdb49cfe54c1a05189557d813ecd5922f..9126fbc646c6011158bd683004499e153db23beb 100644
--- a/Tests/Data/Utils/partmesh/partmesh_roundtrip.md
+++ b/Tests/Data/Utils/partmesh/partmesh_roundtrip.md
@@ -28,7 +28,7 @@ num_partitions = 4
```
```python
-! cd {out_dir} && mpirun -np {num_partitions} binaryToPVTU -i {input_mesh_basename} -o {input_mesh_basename}
+! cd {out_dir} && mpirun --bind-to none -np {num_partitions} binaryToPVTU -i {input_mesh_basename} -o {input_mesh_basename}
```
Please note that `binaryToPVTU` has to be run with MPI and is therefore available on OGS PETSc configurations only.