error in MMIE lattice pruning

[Jake]

I got a "failed to run" message when I run MMIE training in step
61.lattice_pruning. The demo is RM1, step 60.lattice_generation generates
"num" and "denum" lattices well. The program stopped immediately in phase 2
"Posterior probability lattice pruning ..."

The files in logdir shows as follows:

Traceback (most recent call last):
File "/speech/tools/asr/cmu_sphinx/rm1/python/cmusphinx/lattice_prune.py",
line 5, in ?
import lattice
File "/speech/tools/asr/cmu_sphinx/rm1/python/cmusphinx/lattice.py", line 18,
in ?
import sphinxbase
ImportError: No module named sphinxbase
Tue Nov 30 17:35:49 2010

Could anyone know how to fix it? Thanks a lot.

[Nickolay V. Shmyrev]

Hello.

It fails to find python module sphinxbase. This module is compiled with
sphinxbase package if python support is found/enabled. This module is located
in a single so file sphinxbase.so.

You either need to place the file into the location where python will find it
and load (/usr/lib/python<version>/site-packages) or adjust PYTHONPATH to
point to the location of this file. Or you can just place this file into
python subfolder in your training folder. </version>

[Pranav Jawale]

Hello,

I too have same problem. I copied sphinxbase/lib/libsphinxbase.so to
/usr/lib/python2.6/

Then when I type "import lattice" in Python shell I get ImportError: No module
named sphinxbase

When I do import libsphinxbase then error is ImportError: dynamic module does
not define init function (initlibsphinxbase)

Any help?
Thanks

[Jake]

Try copying it to /usr/lib/python2.6/site-packages, which is one more
directory deeper.

[Pranav Jawale]

Hi,

Thanks for the advice; but same error!

I checked with sys.path, the *.so file is there in the path.

Problem is that python is able to find the libsphinxbase.so file, but some
other error is occurring ..

ImportError: dynamic module does not define init function (initlibsphinxbase)

If I delete the libsphinxbase.so file (it's actually a symlink) from
PYTHONPATH another error occurs which says "No module named libsphinxbase"

Did you do the same thing to solve your problem (cp
/sphinxbase/lib/libsphinxbase.so /path/to/python/lib/files/)?

[Jake]

I didn't copy. I exported LD_LIBRARY_PATH=/path/to/sphinxbase/lib and
PYTHONPATH=/path/to/python/site-packages

[Pranav Jawale]

Hi,

Now I tried that, I added /path/to/sphinxbase/lib to sys.path in python. Also
exported LD_LIBRARY_PATH, But error is same (dynamic module).

Could you please tell what output you get for following two commands in pythin
shell

import sphinxbase
import libsphinxbase

Thanks.

[Jake]

I exported them as linux environment variables, not to sys.path.

[Nickolay V. Shmyrev]

import sphinxbase

This works if you properly define PYTHONPATH and LD_LIBRARY_PATH

import libsphinxbase

This one is not supposed to be working

[Pranav Jawale]

Hello,

Problem solved! Thanks for your help.

I checked config.log created during sphinxbase install. It said disabling
python as development headers not found. So I installed python2.7 in its
source directory where Python.h is present.

Then installed sphinxbase with

 --with-python/path/to/python2.7/source

argument. This created sphinxbase.so which was earlier missing, and hence I
thought may be importing libsphinxbase will do as libsphinxbase.so was present
under sphinabase/lib

Now I did

export LD_LIBRARY_PATH /path/to/sphinxbase/lib

and added /path/to/sphinxbase.so using sys.path.append() in python shell. I am
root user so can't use PYTHONPATH (ref http://ubuntuforums.org/showthread.php
?t=1550747)

Now import sphinxbase is working fine.

Thanks again.

[Pranav Jawale]

oops, ,missing "=" after --with-python