I thought that it is a good idea to try &quot;mpiexec -tracefile mytrace.etl MPIApp.exe&quot;.    I get the error:<br/> Aborting: failed to start tracing on CNODE00<br/> Error(183) Cannot create a file when that file already exists.<br/> <br/> I have no problem running &quot;mpiexec MPIApp.exe&quot;.   <br/> <br/> Can you tell me how I can get the trace file?  <br/> <br/> Thank you.<br/>© 2009 Microsoft Corporation. All rights reserved.Tue, 11 Aug 2009 01:21:34 Z29dd6a06-8666-487a-bce6-54338c07238ehttp://social.microsoft.com/Forums/en-US/windowshpcdevs/thread/29dd6a06-8666-487a-bce6-54338c07238e#29dd6a06-8666-487a-bce6-54338c07238ehttp://social.microsoft.com/Forums/en-US/windowshpcdevs/thread/29dd6a06-8666-487a-bce6-54338c07238e#29dd6a06-8666-487a-bce6-54338c07238etosa.yasunarihttp://social.microsoft.com/Profile/en-US/?user=tosa.yasunariI thought that it is a good idea to try &quot;mpiexec -tracefile mytrace.etl MPIApp.exe&quot;.    I get the error:<br/> Aborting: failed to start tracing on CNODE00<br/> Error(183) Cannot create a file when that file already exists.<br/> <br/> I have no problem running &quot;mpiexec MPIApp.exe&quot;.   <br/> <br/> Can you tell me how I can get the trace file?  <br/> <br/> Thank you.<br/>Tue, 30 Jun 2009 19:22:49 Z2009-06-30T19:22:49Zhttp://social.microsoft.com/Forums/en-US/windowshpcdevs/thread/29dd6a06-8666-487a-bce6-54338c07238e#490c500a-c07c-4146-a6a2-ecb6dbeaa92ehttp://social.microsoft.com/Forums/en-US/windowshpcdevs/thread/29dd6a06-8666-487a-bce6-54338c07238e#490c500a-c07c-4146-a6a2-ecb6dbeaa92eJohannes_dehttp://social.microsoft.com/Profile/en-US/?user=Johannes_deHello,<br/> <br/> there might be an issue with the access permissions.<br/> What working directory did you set? Have you write /create permissions there?<br/> Otherwise the trace file might be written to one default location for all users and you might not have sufficient rights to overwrite the trace files of other users.<br/> <br/> Johannes<hr class="sig">JHFri, 03 Jul 2009 07:12:39 Z2009-07-03T07:12:39Zhttp://social.microsoft.com/Forums/en-US/windowshpcdevs/thread/29dd6a06-8666-487a-bce6-54338c07238e#c0967b1f-3178-4d3c-8eea-34e3b3f1e16chttp://social.microsoft.com/Forums/en-US/windowshpcdevs/thread/29dd6a06-8666-487a-bce6-54338c07238e#c0967b1f-3178-4d3c-8eea-34e3b3f1e16cLiohttp://social.microsoft.com/Profile/en-US/?user=LioHi,<br/><br/>One posability is that the tracing session is still on from a failed (Ctrl-C) run or a cancelled job; hence the new run can not create that session again.<br/><br/>Run &quot;logman stop msmpi -ets&quot; and then retry tracing.<br/><br/>.ErezMon, 06 Jul 2009 17:01:41 Z2009-07-06T17:01:41Z