subject:"\[petsc\-users\] slow generation of petsc MPIAIJ matrix"

Re: [petsc-users] slow generation of petsc MPIAIJ matrix

2017-06-14 Thread Barry Smith

http://www.mcs.anl.gov/petsc/documentation/faq.html#efficient-assembly > On Jun 14, 2017, at 3:18 PM, Jed Brown wrote: > > "Kannan, Ramakrishnan" writes: > >> I am running NHEP across 16 MPI processors over 16 nodes in a matrix of >> global size of

Re: [petsc-users] slow generation of petsc MPIAIJ matrix

2017-06-14 Thread Jed Brown

"Kannan, Ramakrishnan" writes: > I am running NHEP across 16 MPI processors over 16 nodes in a matrix of > global size of 1,000,000x1,000,000 with approximately global 16,000,000 > non-zeros. Each node has the 1D row distribution of the matrix with exactly > 62500 rows and

[petsc-users] slow generation of petsc MPIAIJ matrix

2017-06-14 Thread Kannan, Ramakrishnan

I am running NHEP across 16 MPI processors over 16 nodes in a matrix of global size of 1,000,000x1,000,000 with approximately global 16,000,000 non-zeros. Each node has the 1D row distribution of the matrix with exactly 62500 rows and 1 million columns with 1million non-zeros as CSR/COO