On Thu, 2011-11-17 at 17:11 -0500, Vivek Ranjan wrote: > However, the example given in the user guide > (http://quantum-espresso.org/user_guide/node18.html) is > ndiag = 144 and n_pw = 256 > > In this example ndiag^2 > n_pw
the example given in the user guide is consistent with how the code works (i.e. you specify -ndiag N^2 to use N^2 processors in scalapck diagonalization). The paper you mention (not a memorable one, by the way) uses a different convention (ndiag=N, not N^2) . Thank you for remarking this P. -- Paolo Giannozzi, IOM-Democritos and University of Udine, Italy
