<div dir="ltr"><div>PETSc 3.6.3 and on automatically determines that last field, so you just need "KSPSetOperators(ksp,A,A)"<br><br><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Aug 7, 2016 at 2:59 AM, 丁老师 <span dir="ltr"><<a href="mailto:ztdepyahoo@163.com" target="_blank">ztdepyahoo@163.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Dear friends:</div><div>     I just update to 3.6.3, but the command " KSPSetOperators(ksp,A,A,SAME_<wbr>NONZERO_PATTERN)" does not work any more. could you please give me some suggestions<br></div><div>Regards</div></div><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></div><br><br><span title="neteasefooter"><p> </p></span></blockquote></div><br></div>