HDF5 error from MEEP on Ubuntu -


i have installed meep, running fine when try run this tutorial code straight waveguide following message:

----------- initializing structure... working in 2d dimensions. computational cell 16 x 8 x 0 resolution 10      block, center = (0,0,0)           size (1e+20,1,1e+20)           axes (1,0,0), (0,1,0), (0,0,1)           dielectric constant epsilon diagonal = (12,12,12) time set_epsilon = 0.0840669 s ----------- creating output file "./eps-000000.00.h5"... hdf5-diag: error detected in hdf5 (1.8.4) thread 3078944464:   #000: ../../../src/h5f.c line 1430 in h5fcreate(): unable create file     major: file accessability     minor: unable open file   #001: ../../../src/h5f.c line 1220 in h5f_open(): unable open file     major: file accessability     minor: unable open file   #002: ../../../src/h5fd.c line 1079 in h5fd_open(): open failed     major: virtual file layer     minor: unable initialize object   #003: ../../../src/h5fdsec2.c line 365 in h5fd_sec2_open(): unable open file     major: file accessability     minor: unable open file   #004: ../../../src/h5fdsec2.c line 365 in h5fd_sec2_open(): permission denied     major: internal error (too specific document in detail)     minor: system error message meep: error on line 450 of ../../../src/h5file.cpp: error opening hdf5 output file

it looks permission error. have write permission in current directory? or file ./eps-000000.00.h5 exists , cannot overwritten?


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