I have to use Kronecker product of a matrix with a unit matrix is there any routine in ScaLapack or Lapack which can do so efficiently.

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    $\begingroup$ Can you write out in formulas what you want to do? It would also help if you explained why you want to do that and what you want to do with the result, since there may be more efficient ways of doing that without building the Kronecker product. $\endgroup$ – Wolfgang Bangerth Mar 5 '18 at 4:24
  • $\begingroup$ Kronecker product is basically a space allocation problem with some additional overhead of scalar multiplesof the matrix. Hence any efficient allocation would be an efficient implementation. $\endgroup$ – percusse Apr 16 '18 at 12:20

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