Re: [Tutor] matrix-vector multiplication errors

2008-02-02 Thread Eike Welk
On Friday 01 February 2008 23:13, Dinesh B Vadhia wrote: > I've posted this on the Scipy forum but maybe there are answers on > Tutor too. I'm performing a standard Scipy matrix* vector > multiplication, b=Ax , (but not using the sparse module) with > different sizes of A as follows: > > > Assumin

Re: [Tutor] matrix-vector multiplication errors

2008-02-02 Thread Eike Welk
On Friday 01 February 2008 23:13, Dinesh B Vadhia wrote: > I've posted this on the Scipy forum but maybe there are answers on > Tutor too. I'm performing a standard Scipy matrix* vector > multiplication, b=Ax , (but not using the sparse module) with > different sizes of A as follows: > > > Assumin

[Tutor] matrix-vector multiplication errors

2008-02-01 Thread Dinesh B Vadhia
I've posted this on the Scipy forum but maybe there are answers on Tutor too. I'm performing a standard Scipy matrix* vector multiplication, b=Ax , (but not using the sparse module) with different sizes of A as follows: Assuming 8 bytes per float, then: 1. matrix A with M=10,000 and N=15,000