Hi M. Latham, I have more information now. When I try to run my example on NFS, I have the following error code: error #812707360 Other I/O error , error stack: ADIOI_NFS_READSTRIDED(523): Other I/O error Success that is returned by MPI_File_read_all_begin When I try on a local disk, everything is fine. Here are all files about my actual build: http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.21.05h40m02s_conf... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.21.05h40m02s_c.tx... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.21.05h40m02s_m.tx... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.21.05h40m02s_mi.t... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.21.05h40m02s_mpl_... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.21.05h40m02s_pm_h... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.21.05h40m02s_mpie... Hope this help to dig further into this issue. Thanks, Eric On 15/11/17 03:55 PM, Eric Chamberland wrote:

Hi,

We are compiling with mpich/master each night since august 2016...

since nov 8, the mpich/master branch is buggy with our nighlty build tests.

Here is the nov 8 config.log:

http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.08.05h36m02s_conf...

For nov 7 the configure log:

http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2017.11.07.05h36m01s_conf...

Since nov 8, on a specific ROMIO test, it is hanging indefinitely in optimized mode, and into DEBUG mode, I have a strange (yet to be debugged) assertion in our code.

I reran the test manually, and when I wrote the results on a local disk, everything is fine.

However, when I write over *NFS*, the test is faulty.

I have not yet debugged enough through this, but, I suspect something related with one of:

MPI_File_write_all_begin MPI_File_write_all_end MPI_File_read_all_begin MPI_File_read_all_end MPI_File_set_view MPI_Type_free

Am I alone to see these problems?

Thanks, Eric

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