Close QuantumESPRESSO logger before instantiating internal EasyBlock

This fixes the increased memory usage when running the EasyConfig test suite
as log files would stay open.

Signed-off-by: Jan André Reuter <[email protected]>

easybuild/easyblocks/q/quantumespresso.py

@@ -28,6 +28,7 @@
 @author: Kenneth Hoste (Ghent University)
 @author: Ake Sandgren (HPC2N, Umea University)
 @author: Davide Grassano (CECAM, EPFL)
+@author: Jan Reuter (Juelich Supercomputing Centre)
 """
 
 import fileinput
@@ -82,6 +83,13 @@ def __init__(self, ec, *args, **kwargs):
             self.log.info('Using CMake easyblock for Quantum ESPRESSO')
             eb = EB_QuantumESPRESSOcmake
 
+        # Close log, as the selected EasyBlock will have its own log.
+        # If not closed, the log may be written multiple times, which has been observed
+        # during the EasyConfig test suite. We need to do this before instantiating the
+        # selected EasyBlock to prevent overwriting the logger, essentially resulting
+        # in the same issue (due to __getattribute__).
+        super(EB_QuantumESPRESSO, self).close_log()
+
         # Required to avoid CMakeMake default extra_opts to override the ConfigMake ones
         new_ec = EasyConfig(ec.path, extra_options=eb.extra_options())
         self.ebclass = eb(new_ec, *args, **kwargs)