<div dir="ltr"><span style="font-size:12.8px">Hi,</span><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">I am trying to create a DM matrix with <span style="font-size:12.8px">DMCreateMatrix_DA_3d_MPIAIJ() instead of using DMCreateMatrix().</span></div><div style="font-size:12.8px"><span style="font-size:12.8px">Which header file should I include to use that routine? also, what is the source file containing the DMCreateMatrix() routine?</span></div><div style="font-size:12.8px"><span style="font-size:12.8px"><br></span></div><div style="font-size:12.8px"><span style="font-size:12.8px">Many thanks in advance.</span></div><div class="" style="font-size:12.8px"><div id=":lm" class="" tabindex="0"><img class="" src="https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif"></div><div id=":lm" class="" tabindex="0">Pham</div></div></div>