[SciPy-user] spare matrices
Mon Mar 16 19:06:42 CDT 2009
Hi, I'm new to python (from matlab) and am having some difficulties.
In my program I need to use large sparse linear systems where A is nxm matrix
with n is a few million, m is around 100,000 and there are about 50 entries per
row, so there are several million nonzero entries.
I'm trying scipy sparse and it is really slow (at least 10-20 seconds to much
longer), while matlab can do multiplications almost instantly. I've looked at
various online documents and googled a bit, and from what I see people seem to
find these numbers large in scipy. Am I missing something or do I need to go
back to Matlab?
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