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Add environment variables to set verbosity levels on initialization #2425

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d74522b
Add MEEP_VERBOSITY_LEVEL and MPB_VERBOSITY_LEVEL environment variable…
yaugenst Mar 6, 2023
1d6d416
Add MEEP_MPI_SILENCE_WORKERS environment variable to optionally enabl…
yaugenst Mar 6, 2023
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18 changes: 9 additions & 9 deletions python/meep.i
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Original file line number Diff line number Diff line change
Expand Up @@ -1866,19 +1866,19 @@ PyObject *_get_array_slice_dimensions(meep::fields *f, const meep::volume &where
print('\n**\n** failed to load python MPI module (mpi4py)\n**', e, '\n**\n')
pass
else:
# this variable reference is needed for lazy initialization of MPI
comm = MPI.COMM_WORLD
if am_master():
Procs=comm.Get_size()
(Major,Minor)=MPI.Get_version();
print('Using MPI version {}.{}, {} processes'.format(Major, Minor, Procs));

if not am_master():
import os
import os
if not am_master() and os.getenv("MEEP_MPI_SILENCE_WORKERS", "true").lower() in ("true", "1"):
import sys
saved_stdout = sys.stdout
sys.stdout = open(os.devnull, 'w')

# this variable reference is needed for lazy initialization of MPI
comm = MPI.COMM_WORLD
Procs = comm.Get_size()
Major, Minor = MPI.Get_version()
if verbosity.meep > 0:
print('Using MPI version {}.{}, {} processes'.format(Major, Minor, Procs))

vacuum = Medium(epsilon=1)
air = Medium(epsilon=1)
metal = Medium(epsilon=-inf)
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3 changes: 2 additions & 1 deletion python/mpb.i
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Expand Up @@ -356,8 +356,9 @@ const int MPB_VERSION_PATCH;
%pythoncode %{
__version__ = (_mpb.cvar.MPB_VERSION_MAJOR, _mpb.cvar.MPB_VERSION_MINOR, _mpb.cvar.MPB_VERSION_PATCH)

import os
from meep.verbosity_mgr import Verbosity
verbosity = Verbosity(_mpb.cvar, 'mpb', 1)
verbosity = Verbosity(_mpb.cvar, 'mpb', int(os.getenv("MPB_VERBOSITY_LEVEL", 1)))

from .solver import (
MPBArray,
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2 changes: 1 addition & 1 deletion python/simulation.py
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Expand Up @@ -43,7 +43,7 @@

from matplotlib.axes import Axes

verbosity = Verbosity(mp.cvar, "meep", 1)
verbosity = Verbosity(mp.cvar, "meep", int(os.getenv("MEEP_VERBOSITY_LEVEL", 1)))

mp.setup()

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