[petsc-users] Union of sequential vecs

[Karthikeyan Chockalingam - STFC UKRI]

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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