diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9daca3c..594f636 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,13 +9,14 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     strategy:
+      fail-fast: false
       matrix:
         os: [ubuntu-latest]
         python-version: ["3.8"]
 
     steps:
     - name: Checkout code
-      uses: nschloe/action-cached-lfs-checkout@v1
+      uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
@@ -23,7 +24,7 @@ jobs:
     - name: Download data
       run: |
         python3 -m pip install gdown
-        python3 scripts/download_data.py
+        python3 -u scripts/download_data.py
     - name: Build Linux
       run: bazel build -- //...
       if: matrix.os != 'windows-latest'
@@ -31,9 +32,12 @@ jobs:
       run: bazel build  --cxxopt=/MT -- //...
       if: matrix.os == 'windows-latest'
     - name: Run tests
-      run: python3 scripts/run_tests.py test_results
+      run: python3 -u scripts/run_tests.py test_results
     - name: Checkout main branch
-      run: git checkout main
+      run: |
+        git remote set-branches origin '*'
+        git fetch --depth 1
+        git checkout main
     - name: Build Linux
       run: bazel build -- //...
       if: matrix.os != 'windows-latest'
@@ -41,6 +45,6 @@ jobs:
       run: bazel build  --cxxopt=/MT -- //...
       if: matrix.os == 'windows-latest'
     - name: Run tests
-      run: python3 scripts/run_tests.py test_results_ref
+      run: python3 -u scripts/run_tests.py test_results_ref
     - name: Process tests
-      run: python3 ./bazel-starobservationschedulingsolver/external/optimizationtools/scripts/process_tests.py --ref test_results_ref --new test_results
+      run: python3 -u ./bazel-starobservationschedulingsolver/external/optimizationtools/scripts/process_tests.py --ref test_results_ref --new test_results
diff --git a/README.md b/README.md
index ad06469..68348f3 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,11 @@ Compile:
 bazel build -- //...
 ```
 
+Download data:
+```shell
+python3 scripts/download_data.py
+```
+
 Examples:
 
 ```shell
diff --git a/scripts/download_data.py b/scripts/download_data.py
index 5110452..47f1de9 100644
--- a/scripts/download_data.py
+++ b/scripts/download_data.py
@@ -2,10 +2,12 @@
 import os
 import pathlib
 
-gdown.download(id="1RzBH4LWSqHGdE-0SIpZZCluV6MLZ6b4f")
-os.system("7z x star_observation_scheduling.7z -odata")
-pathlib.Path("star_observation_scheduling.7z").unlink()
 
-gdown.download(id="1ag21EFO0VzZlUccjTSVJ9tlT0uh7DbkS")
-os.system("7z x flexible_star_observation_scheduling.7z -odata")
-pathlib.Path("flexible_star_observation_scheduling.7z").unlink()
+def download(id):
+    gdown.download(id=id, output="data.7z")
+    os.system("7z x data.7z -odata")
+    pathlib.Path("data.7z").unlink()
+
+
+download("1RzBH4LWSqHGdE-0SIpZZCluV6MLZ6b4f")
+download("1ag21EFO0VzZlUccjTSVJ9tlT0uh7DbkS")
diff --git a/scripts/run_tests.py b/scripts/run_tests.py
index fc584bb..979e042 100644
--- a/scripts/run_tests.py
+++ b/scripts/run_tests.py
@@ -1,79 +1,112 @@
+import argparse
 import sys
 import os
 
-test_results_directory = sys.argv[1]
+parser = argparse.ArgumentParser(description='')
+parser.add_argument('directory')
+parser.add_argument(
+        "-t", "--tests",
+        type=str,
+        nargs='*',
+        help='')
 
-starobservationscheduling_data = [
-        os.path.join("catusse2016", "ins_400_71_1"),
-        os.path.join("catusse2016", "ins_400_71_2"),
-        os.path.join("catusse2016", "ins_400_71_3"),
-        os.path.join("catusse2016", "ins_400_71_4"),
-        os.path.join("catusse2016", "ins_400_71_5"),
-        os.path.join("catusse2016", "ins_600_107_1"),
-        os.path.join("catusse2016", "ins_600_107_2"),
-        os.path.join("catusse2016", "ins_600_107_3"),
-        os.path.join("catusse2016", "ins_600_107_4"),
-        os.path.join("catusse2016", "ins_600_107_5"),
-        os.path.join("catusse2016", "real.txt")]
-starobservationscheduling_main = os.path.join(
+args = parser.parse_args()
+
+
+star_observation_scheduling_main = os.path.join(
         "bazel-bin",
         "starobservationschedulingsolver",
         "star_observation_scheduling",
         "main")
-for instance in starobservationscheduling_data:
-    instance_path = os.path.join(
-            "data",
-            "star_observation_scheduling",
-            instance)
-    json_output_path = os.path.join(
-            test_results_directory,
-            "star_observation_scheduling",
-            instance + ".json")
-    if not os.path.exists(os.path.dirname(json_output_path)):
-        os.makedirs(os.path.dirname(json_output_path))
-    command = (
-            starobservationscheduling_main
-            + "  --verbosity-level 1"
-            + "  --input \"" + instance_path + "\""
-            + "  --algorithm column-generation"
-            + "  --output \"" + json_output_path + "\"")
-    print(command)
-    os.system(command)
+
+
+if args.tests is None or "star-observation-scheduling-column-generation" in args.tests:
+    print("Star observation scheduling problem / column generation")
+    print("-------------------------------------------------------")
+    print()
+
+    star_observation_scheduling_column_generation_data = [
+            os.path.join("catusse2016", "ins_400_71_1"),
+            os.path.join("catusse2016", "ins_400_71_2"),
+            os.path.join("catusse2016", "ins_400_71_3"),
+            os.path.join("catusse2016", "ins_400_71_4"),
+            os.path.join("catusse2016", "ins_400_71_5"),
+            os.path.join("catusse2016", "ins_600_107_1"),
+            os.path.join("catusse2016", "ins_600_107_2"),
+            os.path.join("catusse2016", "ins_600_107_3"),
+            os.path.join("catusse2016", "ins_600_107_4"),
+            os.path.join("catusse2016", "ins_600_107_5"),
+            os.path.join("catusse2016", "real.txt")]
+    for instance in star_observation_scheduling_column_generation_data:
+        instance_path = os.path.join(
+                "data",
+                "star_observation_scheduling",
+                instance)
+        json_output_path = os.path.join(
+                args.directory,
+                "star_observation_scheduling",
+                instance + ".json")
+        if not os.path.exists(os.path.dirname(json_output_path)):
+            os.makedirs(os.path.dirname(json_output_path))
+        command = (
+                star_observation_scheduling_main
+                + "  --verbosity-level 1"
+                + "  --input \"" + instance_path + "\""
+                + "  --algorithm column-generation"
+                + "  --output \"" + json_output_path + "\"")
+        print(command)
+        status = os.system(command)
+        if status != 0:
+            sys.exit(1)
+        print()
+    print()
     print()
 
-starobservationscheduling_data = [
-        os.path.join("catusse2016_discrete_80", "ins_400_71_1"),
-        os.path.join("catusse2016_discrete_80", "ins_400_71_2"),
-        os.path.join("catusse2016_discrete_80", "ins_400_71_3"),
-        os.path.join("catusse2016_discrete_80", "ins_400_71_4"),
-        os.path.join("catusse2016_discrete_80", "ins_400_71_5"),
-        os.path.join("catusse2016_discrete_85", "ins_400_71_1"),
-        os.path.join("catusse2016_discrete_85", "ins_400_71_2"),
-        os.path.join("catusse2016_discrete_85", "ins_400_71_3"),
-        os.path.join("catusse2016_discrete_85", "ins_400_71_4"),
-        os.path.join("catusse2016_discrete_85", "ins_400_71_5")]
+
 flexible_star_observation_scheduling_main = os.path.join(
         "bazel-bin",
         "starobservationschedulingsolver",
         "flexible_star_observation_scheduling",
         "main")
-for instance in starobservationscheduling_data:
-    instance_path = os.path.join(
-            "data",
-            "flexible_star_observation_scheduling",
-            instance)
-    json_output_path = os.path.join(
-            test_results_directory,
-            "flexible_star_observation_scheduling",
-            instance)
-    if not os.path.exists(os.path.dirname(json_output_path)):
-        os.makedirs(os.path.dirname(json_output_path))
-    command = (
-            flexible_star_observation_scheduling_main
-            + "  --verbosity-level 1"
-            + "  --input \"" + instance_path + "\""
-            + "  --algorithm column-generation"
-            + "  --output \"" + json_output_path + "\"")
-    print(command)
-    os.system(command)
+
+
+if args.tests is None or "flexible-star-observation-scheduling-column-generation" in args.tests:
+    print("Flexible star observation scheduling / column generation")
+    print("--------------------------------------------------------")
+    print()
+
+    flexible_star_observation_scheduling_column_generation_data = [
+            os.path.join("catusse2016_discrete_80", "ins_400_71_1"),
+            os.path.join("catusse2016_discrete_80", "ins_400_71_2"),
+            os.path.join("catusse2016_discrete_80", "ins_400_71_3"),
+            os.path.join("catusse2016_discrete_80", "ins_400_71_4"),
+            os.path.join("catusse2016_discrete_80", "ins_400_71_5"),
+            os.path.join("catusse2016_discrete_85", "ins_400_71_1"),
+            os.path.join("catusse2016_discrete_85", "ins_400_71_2"),
+            os.path.join("catusse2016_discrete_85", "ins_400_71_3"),
+            os.path.join("catusse2016_discrete_85", "ins_400_71_4"),
+            os.path.join("catusse2016_discrete_85", "ins_400_71_5")]
+    for instance in flexible_star_observation_scheduling_column_generation_data:
+        instance_path = os.path.join(
+                "data",
+                "flexible_star_observation_scheduling",
+                instance)
+        json_output_path = os.path.join(
+                args.directory,
+                "flexible_star_observation_scheduling",
+                instance)
+        if not os.path.exists(os.path.dirname(json_output_path)):
+            os.makedirs(os.path.dirname(json_output_path))
+        command = (
+                flexible_star_observation_scheduling_main
+                + "  --verbosity-level 1"
+                + "  --input \"" + instance_path + "\""
+                + "  --algorithm column-generation"
+                + "  --output \"" + json_output_path + "\"")
+        print(command)
+        status = os.system(command)
+        if status != 0:
+            sys.exit(1)
+        print()
+    print()
     print()