<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Thanks, it seems to work but I have a memory leak. I use:<div><br></div><div><div> ierr = PCGASMSetLocalSubdomains( subpc, sz, is, PETSC_NULL ); CHKERRQ(ierr);</div><div> ierr = PetscFree( is ); CHKERRQ(ierr);</div><div><br></div><div>and it looks like the ISs are not getting destroyed in GASM.</div><div><br></div><div>Mark</div><div><br></div><div><div>On Mar 29, 2012, at 9:35 PM, Dmitry Karpeev wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Now it should work the way you intended.<div>Let me know if it doesn't, though.</div><div><br></div><div>Dmitry.<br><div><br><div class="gmail_quote">On Thu, Mar 29, 2012 at 7:49 PM, Mark F. Adams <span dir="ltr"><<a href="mailto:mark.adams@columbia.edu">mark.adams@columbia.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><br><div><div><div class="h5"><div>On Mar 29, 2012, at 11:38 AM, Dmitry Karpeev wrote:</div>
<br><blockquote type="cite"><br><br><div class="gmail_quote">On Thu, Mar 29, 2012 at 10:13 AM, Jed Brown <span dir="ltr"><<a href="mailto:jedbrown@mcs.anl.gov" target="_blank">jedbrown@mcs.anl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div class="gmail_quote">On Thu, Mar 29, 2012 at 08:28, Dmitry Karpeev <span dir="ltr"><<a href="mailto:karpeev@mcs.anl.gov" target="_blank">karpeev@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Back to the original problem: how shall we prevent a shared pc from being gutted by an unprotected PCReset() cascading from a KSPDestroy() on one of the containing ksps? I can factor out KSPReset_Private()/PCReset_Private() as indicated before, unless there are objections.</div>
</blockquote></div><br></div><div> What do you think of my suggestion of masking ksp->pc when KSPDestroy calls KSPReset? Then KSPReset does not call PCReset if ksp->pc does not exist.</div></blockquote><div>I guess that works too, but I thought your suggestion applied to userland code right before calling KSPDestroy(&ksp)?</div>
<div>I suppose that will fix Mark's problem. Maybe that's the right approach: he got himself into this mess by reusing a pc</div><div>in the inner ksp, he should know how to extricate himself :-)</div></div></blockquote>
<div><br></div></div></div>BTW, this is not a matter of being lazy, I need an eigen estimate of the smoothers preconditioned operator. In the past I created a new PC from the command line database (ugly), but this GASM smoother can not be reconstructed from the database (it uses the AMG aggregates). I could do a deep copy of the smoother but that would require two setups of the GASM PC, which would be ugly.</div>
<div><br></div><div>Mark</div><div><br><blockquote type="cite"><div class="gmail_quote"><div><br></div>
<div>Dmitry.</div><div><br></div></div>
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