Now, I use several processor to run my codes. However, I need to create sequential Vec&nbsp;and&nbsp;Mat.&nbsp;I&nbsp;use&nbsp;VecCreateSeq()&nbsp;to&nbsp;create&nbsp;Vec.&nbsp;I&nbsp;get&nbsp;error&nbsp;information.&nbsp;How&nbsp;to&nbsp;get&nbsp;it?&nbsp;thanks&nbsp;a&nbsp;lot.<br><br>Regards,<br>Yujie<br>