[mpich-discuss] mpi assertion error

Wesley Bland wbland at mcs.anl.gov
Fri Jun 28 08:22:09 CDT 2013


Can you just copy paste your error into the email? Most of us will probably not be all that excited about opening up strange tarballs attached to an email. Also, we get these emails on our phones and tablets where unzipping source code isn't as much of an option.

Wesley

On Jun 28, 2013, at 8:17 AM, Danilo <apeironoriepa at aol.com> wrote:

> Good afternoon,
> 
> I wrote a little application in C to compute 2D fft. This app was firstly executed on a cluster on which it was installed 2007 mpi version (don't remember the package name) and then adapted for a different cluster with mpi 1.4.1 (had to change the scatter/gather because in the previous version I could use the same buffer for both sendbuff and recvbuff). By the way, when executing with 2 processes it works fine. When trying with 4/8/16/32 and so on it gives firstly an assertion error as shown in the file attached, and starting from the second time you try to run it on more than 2 procs it gives error code 139. The error I'm talking about appears just when you run it with "realDim=16384" (it means that you have 16384 rows and 16384x2 columns since it is designed for real/imaginary numbers). I know the code is working since it was all ok on the previous cluster (even with 4-8-16-32 procs) and I can't find out which is the problem now.. Can you help?
> 
> As said attached you can find my application as well as the errors appearing and mpi info..
> 
> Regards,
> Danilo
> <error+app.tar.gz>_______________________________________________
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