<div class="gmail_quote">On Wed, Aug 3, 2011 at 04:08, Mohammad Mirzadeh <span dir="ltr"><<a href="mailto:mirzadeh@gmail.com">mirzadeh@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>I have a question regarding the VecScatter routine. If I make a call like:</div><div><br></div><div>VecScatterCreate(old_vec, PETSC_NULL, new_vec, is_scat, &vec_scat);</div></blockquote><div><br></div><div>This creates map from the entire old_vec to the subset of new_vec indexed by the global indices is_scat.</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div>
VecScatterBegin(vec_scat, old_vec, new_vec, INSERT_VALUES, SCATTER_FORWARD);</div><div>VecScatterEnd(vec_scat, old_vec, new_vec, INSERT_VALUES, SCATTER_FORWARD);</div>
<div><br></div><div>what is it that will happen? Does this takes the values of old_vec vector and put them into new_vec and takes care of all communications?</div></blockquote><div><br></div><div>Yes, they go into new_vec according to the global indices is_scat.</div>
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