What steps will reproduce the problem? 1. Install latest svn 2. import pyamg 3. pyamg.test()

What is the expected output?

What do you see instead?

ERROR: test_solver_parameters (test_smoothing.TestSmoothing)

Traceback (most recent call last): File "/home/nwagner/local/lib64/python2.6/site-packages/pyamg/relaxation/tests/test_smoothing.py", line 38, in test_solver_parameters ml = smoothed_aggregation_solver(A, presmoother=method, postsmoother=method, max_coarse=10) File "/home/nwagner/local/lib64/python2.6/site-packages/pyamg/aggregation/aggregation.py", line 319, in smoothed_aggregation_solver change_smoothers(ml, presmoother, postsmoother) File "/home/nwagner/local/lib64/python2.6/site-packages/pyamg/relaxation/smoothing.py", line 144, in change_smoothers ml.levels[i].presmoother = setup_presmoother(ml.levels[i], **kwargs) File "/home/nwagner/local/lib64/python2.6/site-packages/pyamg/relaxation/smoothing.py", line 351, in setup_schwarz subdomain_ptr.shape[0]-1, A.shape[0]) File "/home/nwagner/local/lib64/python2.6/site-packages/pyamg/amg_core/amg_core.py", line 525, in extract_subblocks return _amg_core.extract_subblocks(*args) NotImplementedError: Wrong number of arguments for overloaded function 'extract_subblocks'. Possible C/C++ prototypes are: extract_subblocks<(int,float,float)>(int const [],int const [],float const [],float [],int const [],int const [],int const [],int const,int const) extract_subblocks<(int,double,double)>(int const [],int const [],double const [],double [],int const [],int const [],int const [],int const,int const) extract_subblocks<(int,npy_cfloat_wrapper,float)>(int const [],int const [],npy_cfloat_wrapper const [],npy_cfloat_wrapper [],int const [],int const [],int const [],int const,int const) extract_subblocks<(int,npy_cdouble_wrapper,double)>(int const [],int const [],npy_cdouble_wrapper const [],npy_cdouble_wrapper [],int const [],int const [],int const [],int const,int const)

Ran 145 tests in 152.241s

FAILED (errors=5)

What version of the product are you using? On what operating system? svn on opensuse 11.3 x86_64

Please provide any additional information below.

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Hi Nils,

Thanks for finding this. I tried a couple things in the most recent svn commit. See if that fixes the problem. If the problem isn't fixed, could you insert this line

print A.indptr.dtype, A.indices.dtype, A.data.dtype, inv_subblock.dtype, inv_subblock_ptr.dtype, subdomain.dtype, subdomain_ptr.dtype

after line 346 in smoothing.py, then recompile and finally run pyamg.test()? Let us know what the output is.

Overall, I'm a little confused by this error, because its throwing an exception based on the wrong number of arguments being passed to amg_core.extract_subblocks(..). I'm surprised that this kind of error could be platform dependent. I can't reproduce it locally on my machine. Let me know if you find anything else Nils.

FYI, this function is only used by the overlapping Schwarz relaxation method, so everything else should be fine.

Thanks again,

Jacob

Hi Jacob,

it works for me. Thank you very much.

Nils

Glad to hear it Nils. I'll close this issue then.

moved to github: https://github.com/pyamg/pyamg/issues