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-rw-r--r--src/python/gudhi/periodic_cubical_complex.pyx3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/python/gudhi/periodic_cubical_complex.pyx b/src/python/gudhi/periodic_cubical_complex.pyx
index 11e1766c..bed55101 100644
--- a/src/python/gudhi/periodic_cubical_complex.pyx
+++ b/src/python/gudhi/periodic_cubical_complex.pyx
@@ -214,7 +214,8 @@ cdef class PeriodicCubicalComplex:
cdef vector[vector[int]] persistence_result
if self.pcohptr != NULL:
output = [[],[]]
- persistence_result = self.pcohptr.cofaces_of_cubical_persistence_pairs()
+ with nogil:
+ persistence_result = self.pcohptr.cofaces_of_cubical_persistence_pairs()
pr = np.array(persistence_result)
ess_ind = np.argwhere(pr[:,2] == -1)[:,0]