<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">I use bicgstab solver. i think float128 means a float number with 128 bit. it is more accurate than normal double float number.<br><br><br><br><br><div></div><div id="divNeteaseMailCard"></div><br><pre><br>At 2013-08-12 08:24:25,"Barry Smith" <bsmith@mcs.anl.gov> wrote:
>
> It supports all the standard built-in preconditioners in PETSc. It only does not support the external solvers which are not written to work with __float128. What solver do you want to use?
>
> Barry
>
>On Aug 11, 2013, at 7:22 PM, ¶¡ÀÏʦ <ztdepyahoo@163.com> wrote:
>
>>
>>
>>
>
</pre></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>