On Sunday, June 2, 2013 7:58:05 PM UTC+1, tdumont wrote: > -> In that case, I recall that the main problem will be actually to > *create* the CSR structure: you want to enter non zero coefficients > (i,j)-> a_ij in any order. The mechanism used by by scipy (and thus > sage) is very very slow....
I don't think you can eat the cake and have it, too... Setting entries in CSR is to be avoided. Though I thought that you'd just switch (to dictionary-of-keys, say) to generate the matrix and then compress it in one step. Or maintain a lazy-write cache as dictionary of keys. Is that still not fast enough? -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
