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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.14.5 v3.14.5 docs/manualpages/PC/PCBJacobiSetLocalBlocks.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PCBJacobiSetLocalBlocks"><H1>PCBJacobiSetLocalBlocks</H1></A>
Sets the local number of blocks for the block Jacobi preconditioner.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscpc.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../PC/PCBJacobiSetLocalBlocks.html#PCBJacobiSetLocalBlocks">PCBJacobiSetLocalBlocks</A>(<A HREF="../PC/PC.html#PC">PC</A> pc,<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> blocks,const <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> lens[])
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>pc </B></TD><TD>- the preconditioner context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>blocks </B></TD><TD>- the number of blocks
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>lens </B></TD><TD>- [optional] integer array containing size of each block
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database Key</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-pc_bjacobi_local_blocks <blocks> </B></TD><TD>- Sets the number of local blocks
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Note</FONT></H3>
Currently only a limited number of blocking configurations are supported.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCSetUseAmat.html#PCSetUseAmat">PCSetUseAmat</A>(), <A HREF="../PC/PCBJacobiSetTotalBlocks.html#PCBJacobiSetTotalBlocks">PCBJacobiSetTotalBlocks</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/ksp/pc/impls/bjacobi/bjacobi.c.html#PCBJacobiSetLocalBlocks">src/ksp/pc/impls/bjacobi/bjacobi.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ksp/ksp/tutorials/ex7.c.html">src/ksp/ksp/tutorials/ex7.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/tutorials/ex7f.F90.html">src/ksp/ksp/tutorials/ex7f.F90.html</A><BR>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/ksp/pc/impls/bjacobi/bjacobi.c.html#PCBJacobiSetLocalBlocks_BJacobi">PCBJacobiSetLocalBlocks_BJacobi in src/ksp/pc/impls/bjacobi/bjacobi.c</A><BR>
<BR><A HREF="./index.html">Index of all PC routines</A>
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