[petsc-users] Transpose of Block Matrix with aij type

[Joon hee Choi]

I meant 10^10 elements. However, you are right. The elements number of the data I want to use is 10^{7}x10^{14} and nonzero is 10^{8}. I don't have the data yet, so I confused.

Best regards,
Joon

----- 원래 메시지 -----
보낸 사람: "Jed Brown" <jedbrown at mcs.anl.gov>
받는 사람: "Joon hee Choi" <choi240 at purdue.edu>
참조: "Karl Rupp" <rupp at mcs.anl.gov>, "PETSc users list" <petsc-users at mcs.anl.gov>
보낸 시간: 2013년 4월 24일, 수요일 오후 5:18:38
제목: Re: [petsc-users] Transpose of Block Matrix with aij type





On Wed, Apr 24, 2013 at 10:45 AM, Joon hee Choi < choi240 at purdue.edu > wrote: 


Actually, B is very huge(more than 10^10) and sparse(about 1% dense). 
(10^{10})^2 * 1% = 10^{18} which is probably not a quantity of memory that you have available. So either the matrix is much smaller than 10^{10} or it's much less than 1% dense.