How to fill a matrix with a vector parallelly

[ming zhu]

HII am trying to solve an eigenvalue problem. A = U * LAMBDA*U'.  While SLEPC proivdes a solver to get an eigenvector and the related eigenvalue, I have to fill the eigenvector to form the eigen matrix. However, there seems no such function to do this directly. I was trying to use VecGetValues and filled the matrix one by one. Howevevr, it can not do that in parallel.
   Is there anyone can help me ?
Thank you  


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