<p>thanks a lot, Barry. Merry Xmas:) !</p><p>Yujie<br></p><br><div class="gmail_quote">On Fri, Dec 19, 2008 at 3:32 PM, Barry Smith <span dir="ltr"><<a href="mailto:bsmith@mcs.anl.gov">bsmith@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;"><br>
If INSERT_VALUE is being used then ONE of the values you put in ends up being the value; which one is<br>
not under your control. If ADD_VALUES is used then the sum of all the values is used.<div><div class="Wj3C7c"><br>
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On Dec 19, 2008, at 5:28 PM, Yujie wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi, PETSc developer<br>
<br>
I am wondering if several cpus simultaneously insert the values in the same position using MatSetValue() or VecSetValue(), how do the functions deal with it? thanks a lot.<br>
<br>
Regards,<br>
<br>
Yujie<br>
<br>
</blockquote>
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