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Ticket Resolution Summary Owner Reporter
#35 fixed More information when error in XML parsing ymipsl ymipsl
Description

Possibility to add the source location when an error is occuring while parsing the XML file.

#53 fixed More verbosity needed mhnguyen omamce
Description

I've got :

Error [CONetCDF4::CheckError(int status)] : In file '/ccc/work/cont003/dsm/p86mart/CPL/TRUN01/modeles/XIOS/src/output/onetcdf4.cpp', line 79 -> [ status = -60 ] NetCDF: Numeric conversion not representable

It's due to a problem with an ORCHIDEE variable.

A more comprehensive message is needed, with the information about the context : model involved, variable name, file, etc ...

Thanks

#90 fixed MPI dead lock in XIOS ymipsl mcastril
Description

We are experiencing a repetitive issue with XIOS 1.0 . It appeared using NEMO 3.6 stable and more than 2600 cores, and it seemed to be solved when using Intel 16 compiler and IMPI 5. However, after updating to NEMO 3.6 current stable, the problem appears when using 1920 or more cores. I don't really get how the NEMO revision change could affect to this, but there it is.

The problem is just in this line of client.cpp:

MPI_Send(buff,buffer.count(),MPI_CHAR,serverLeader,1,CXios::globalComm) ;

In the meanwhile the server.cpp is doing MPI_Iprobe continuosly in order to receive all the MPI_Send.

What we have observed is that using a high number of cores, around 80-100 of these cores get stucked at the MPI_Send, causing the run to hang and not complete. The fact that with a certain number of cores the issue appears 80% of the times but not always, made us think that could be related with the IMPI implementation.

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