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DrTimothyAldenDavis / SuiteSparse

The official SuiteSparse library: a suite of sparse matrix algorithms authored or co-authored by Tim Davis, Texas A&M University.
https://people.engr.tamu.edu/davis/suitesparse.html
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allocate work momery outside of umfpack function #842

Closed DragonPara closed 3 months ago

DragonPara commented 3 months ago

Is your feature request related to a problem? Please describe. I want to allocate work momery by my main function, I found a series of umfpack_wsolve.

Describe the solution you'd like I want some umfpack_wnumeric and umfpack_wsymbolic function like this.

DrTimothyAldenDavis commented 3 months ago

It would be a nice feature but it's not possible. Sparse LU factorization is a very dynamic problem; the space required depends on the pivot ordering, which is not known until during numerical factorization.