<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">丁老师:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="line-height:1.7;color:rgb(0,0,0);font-size:14px;font-family:Arial"><div style="line-height:1.7;color:rgb(0,0,0);font-size:14px;font-family:Arial"><div style="line-height:1.7;color:rgb(0,0,0);font-size:14px;font-family:Arial"><div>Dear friends:</div><div>     I Want to gather the vector to the root rank. which command perform this task. i only find that with viewer, we can write it to the root rank.</div></div></div></div></blockquote><div><a href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Vec/VecScatterCreateToZero.html">http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Vec/VecScatterCreateToZero.html</a> </div><div><br></div><div>Hong</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="line-height:1.7;color:rgb(0,0,0);font-size:14px;font-family:Arial"><div style="line-height:1.7;color:rgb(0,0,0);font-size:14px;font-family:Arial"><br><span title="neteasefooter"><p> </p></span></div><br><br><span title="neteasefooter"><p> </p></span></div><br><br><span title="neteasefooter"><p> </p></span></blockquote></div><br></div></div>