Fail earlier if mpirun or dipha are not found.

1 files changed, 2 insertions, 2 deletions

diff --git a/phstuff/diphawrapper.py b/phstuff/diphawrapper.py
index 06e8913..f6ab403 100644
--- a/phstuff/diphawrapper.py
+++ b/phstuff/diphawrapper.py
@@ -295,9 +295,9 @@ class DiphaRunner:
         else:
             self.dipha = dipha
 
-        if self.mpirun is None:
+        if self.mpirun is None or not os.path.isfile(self.mpirun):
             raise RuntimeError("Could not find mpirun exectuable.")
-        if self.dipha is None:
+        if self.dipha is None or not os.path.isfile(self.dipha):
             raise RuntimeError("Could not find dipha executable.")
 
         self.tmpdir = tempfile.mkdtemp()