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A:

you can try

strace python your_script.py

to see what it is trying.

That will trace all syscalls, therefore showing you the underlying open made by python.

Scharron 2010-07-20 16:59:50

All right thanks. According to strace python's looking in "/opt/gridengine/lib/lx26-amd64/" and the four directories specified by "/etc/ld.so.cache". I cannot create links from any of these directories to the known locations of libmkl_lapack.so (and I still can't update /etc/ld.so.cache). Will keep trying...

Bryan 2010-07-20 20:17:51

What about LD_PRELOAD 'ing the library ?LD_PRELOAD=/path/to/libmkl_lapack.so python your_script.pyI don't think it'll work, but you can give it a try.

Scharron 2010-07-20 20:32:35

I get"ERROR: ld.so: object '.../libmkl_lapack.so' from LD_PRELOAD cannot be preloaded: ignored."Before the script even begins to run (and, of course, the same "No such file" error when it does).

Bryan 2010-07-20 20:39:40

Are you sure your libmkl_lapack.so exists. I mean, are you sure it's not a broken symlink ? (ls -l /path/to/libmkl_lapack.so should help).If it exists, can't it be a 64bits VS 32bits problem ?Try readelf -h /path/to/libmkl_lapack.so(You should have Class: ELF32 / ELF64)And uname -a(You should have i586 / i686 / x86_64).

Scharron 2010-07-20 20:55:32

The two available instances of mkl (which both exist) offer separate 32 and 64 bit libraries. I'm employing the 64 bit (for x86_64). Like I said in the OP, I can actually import lapack_lite without issue in Python2.4, so I don't think the file itself is an issue...

Bryan 2010-07-20 21:24:09

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lapack import error with NumPy

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