<p>Hi, PETSc developer<br></p><p>I am using MatGetSubMatrices() for my application. Because I need to exact several matrices from the old one according to my index sets. These index sets are not sorted. To MPIDense matrix, it didn't work. could you give me some help? thanks a lot.</p>
<p>Happy holiday:).</p><p>Regards,</p><p>Yujie</p>