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Updated docs with fnd_owner adn set_p_adjcncy

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Salvatore Filippone
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<TITLE>psb_wtime -- Wall clock timing</TITLE>
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<H2><A NAME="SECTION00086000000000000000">
psb_wtime -- Wall clock timing</A>
<H2><A NAME="SECTION00083000000000000000">
psb_exit -- Exit from PSBLAS parallel
environment</A>
</H2>
<P>
<PRE>
time = psb_wtime()
call psb_exit(icontxt)
call psb_exit(icontxt,close)
</PRE>
<P>
This function returns a wall clock timer. The resolution of the timer
is dependent on the underlying parallel environment implementation.
This subroutine exits from the PSBLAS parallel virtual machine.
<DL>
<DT><STRONG>Type:</STRONG></DT>
<DD>Asynchronous.
<DD>Synchronous.
</DD>
<DT><STRONG><B>On Exit </B></STRONG></DT>
<DT><STRONG><B>On Entry </B></STRONG></DT>
<DD>
</DD>
<DT><STRONG>Function value</STRONG></DT>
<DD>the elapsed time in seconds.
<DT><STRONG>icontxt</STRONG></DT>
<DD>the communication context identifying the virtual
parallel machine.
<BR>
Returned as: a <code>real(psb_dpk_)</code> variable.
Scope: <B>global</B>.
<BR>
Type: <B>required</B>.
<BR>
Intent: <B>in</B>.
<BR>
Specified as: an integer variable.
</DD>
<DT><STRONG>close</STRONG></DT>
<DD>Whether to close all data structures related to the
virtual parallel machine, besides those associated with icontxt.
<BR>
Scope: <B>global</B>.
<BR>
Type: <B>optional</B>.
<BR>
Intent: <B>in</B>.
<BR>
Specified as: a logical variable, default value: true.
</DD>
</DL>
<P>
<BR><HR>
<BIG CLASS="LARGE"><B>Notes</B></BIG>
<OL>
<LI>This routine may be called even if a previous call to
<code>psb_info</code> has returned with <SPAN CLASS="MATH"><IMG
WIDTH="73" HEIGHT="31" ALIGN="MIDDLE" BORDER="0"
SRC="img137.png"
ALT="$iam=-1$"></SPAN>; indeed, it it is the only
routine that may be called with argument <code>icontxt</code> in this
situation.
</LI>
<LI>A call to this routine with <code>close=.true.</code> implies a call
to <code>MPI_Finalize</code>, after which no parallel routine may be called.
</LI>
<LI>If the user whishes to use multiple communication contexts in the
same program, or to enter and exit multiple times into the parallel
environment, this routine may be called to
selectively close the contexts with <code>close=.false.</code>, while on
the last call it should be called with <code>close=.true.</code> to
shutdown in a clean way the entire parallel environment.
</LI>
</OL>
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