<div dir="ltr"><div>I don't believe so. Not without extreme measures.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 7, 2022 at 8:39 AM Gong Ding <<a href="mailto:gongding@cn.cogenda.com">gongding@cn.cogenda.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p>Dear All,</p>
<p>I had a question. For petsc configured with 128bit float, Is it
possible to use 64bit direct solver as mixed precision
preconditioner <span><span>for krylov</span>
subspace iterative method?</span></p>
<p><span> If so , such as MUMPS or Pardiso can be used as efficient
parallel LU </span><span>preconditioner I think. <br>
</span></p>
<p><span>Regards<br>
</span></p>
<p><span>Gong Ding</span></p>
<p><span><br>
</span></p>
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