It appears there is a problem in your output code. Why not just use PETSC output?<br><br> Matt<br><br><div class="gmail_quote">On Wed, Apr 29, 2009 at 10:18 PM, (Rebecca) Xuefei YUAN <span dir="ltr"><<a href="mailto:xy2102@columbia.edu">xy2102@columbia.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>
<br>
I am running some codes and stores the solution in the text file. However, I found that some results are wired in the sense that some processors are "eating" my (i,j) index and the corresponding solution.<br>
<br>
For example, the solution at time step =235 on processor 6 is right, but at time step = 236 on processor 6, one grid solution is missing and thus the order of the index is wrong.<br>
<br>
In the attached two files:<br>
hp.solution.dt0.16700.n90.t235.p6 (right one)<br>
hp.solution.dt0.16700.n90.t236.p6 (wrong one)<br>
for example,<br>
<br>
in hp.solution.dt0.16700.n90.t235.p6 (right one)<br>
i j<br>
---------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>
50 14 3.3212491928636803e-02 7.2992225179014901e-03 2.9841295384404947e+00 2.2004855368148415e-02<br>
51 14 4.0287965701667774e-02 2.5401878231124070e-03 2.9201873761746322e+00 2.6251864239477816e-02<br>
52 14 4.7084950235070790e-02 -1.5367647745423544e-03 2.8460826176461214e+00 3.1550405800570377e-02<br>
53 14 5.3394938807608198e-02 -3.8189091837479271e-03 2.7618414550374171e+00 3.4078755072804334e-02<br>
--------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>
however, in hp.solution.dt0.16700.n90.t236.p6 (wrong one)<br>
i j<br>
---------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>
50 14 3.1239406700376452e-02 8.5179559039992043e-03 2.9840003096148520e+00 2.1760859158622522e-02<br>
51 14 3.8032143218986063e-02 3.6341965920997721e-03 2.9198035731818854e+00 2.6200771510346648e-02<br>
53 14 5.0661309132451274e-02 -2.9274557377189617e-03 2.7606822480069755e+00 3.4021016413777964e-02<br>
54 14 5.6049570141121191e-02 -2.8111244430837979e-03 2.6669503598276267e+00 3.8855104759650566e-02<br>
--------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>
the (i,j) = (52,14) is missing and as a result, one grid point solution is missing.<br>
<br>
I did not understand how this happens and why this happens?<br>
Any ideas?<br>
<br>
Thanks very much!<br>
<br>
Cheers,<br>
<br>
Rebecca<br><font color="#888888">
<br>
<br>
-- <br>
(Rebecca) Xuefei YUAN<br>
Department of Applied Physics and Applied Mathematics<br>
Columbia University<br>
Tel:917-399-8032<br>
<a href="http://www.columbia.edu/%7Exy2102" target="_blank">www.columbia.edu/~xy2102</a><br>
<br>
</font></blockquote></div><br><br clear="all"><br>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener<br>