That is where I am stuck, I don’t know who to combine them to get Vec =
{2,5,7,8,10,11,12}.
I just want them in an MPI vector.
I finally plan to call VecScatterCreateToAll so that all processor gets a copy.
Thank you.
Kind regards,
Karthik.
From: Barry Smith <[email protected]>
Date: Friday, 9 December 2022 at 20:04
To: Chockalingam, Karthikeyan (STFC,DL,HC) <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: [petsc-users] Union of sequential vecs
How are you combining them to get Vec = {2,5,7,8,10,11,12}?
Do you want the values to remain on the same MPI rank as before, just in an
MPI vector?
On Dec 9, 2022, at 2:28 PM, Karthikeyan Chockalingam - STFC UKRI via
petsc-users <[email protected]> wrote:
Hi,
I want to take the union of a set of sequential vectors, each living in a
different processor.
Say,
Vec_Seq1 = {2,5,7}
Vec_Seq2 = {5,8,10,11}
Vec_Seq3 = {5,2,12}.
Finally, get the union of all them Vec = {2,5,7,8,10,11,12}.
I initially wanted to create a parallel vector and insert the (sequential
vector) values but I do not know, to which index to insert the values to. But I
do know the total size of Vec (which in this case is 7).
Any help is much appreciated.
Kind regards,
Karthik.
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