[Darshan-users] Darshan unable to write log files

[Gunter, David O]

Good call, Rob. Thanks!

Saving to a non-Panasas directory worked, as did writing to Panasas with the ufs: prefix.

-david
--
David Gunter
HPC-5: Applications Readiness Team




> On Feb 26, 2015, at 2:04 PM, Rob Latham <robl at mcs.anl.gov> wrote:
> 
> 
> 
> On 02/26/2015 02:54 PM, Gunter, David O wrote:
> 
>> My app writes to a Panasas file system, /scratch/dog/test_prob and I have set
>> DARSHAN_LOGPATH to /scratch/dog/darshan_logs/
> 
> this bit, about Panasas, is the only thing that looks out of the ordinary to me.
> 
> Can you try a non-panasas file system?  If not, can you try prefixing the file with ufs: (DARSHAN_LOGPATH=ufs:/scratch/dog/darshan_logs/
> 
> 
> Did you set up the year/month/day directories?
> (darshan-runtime/darshan-mk-log-dirs.pl )
> 
> ==rob
> 
>> 
>> The permissions on the directory are good. My mpi job runs to completion and then I get the error message.
>> 
>> $ mpirun -n 16 ./higrad_driver_noCBE ./params.16pe.in
>> 
>> Total time for simulation = 69.468311
>> HiGrad simulation is complete!!
>> Shutting down MPI environment!
>> darshan library warning: unable to open log file /scratch/dog/darshan_logs/dog_higrad_driver_noCBE_id501442_2-26-49816-14771330631875741401.darshan_partial: MPI_ERR_IO: input/output error
>> darshan library warning: unable to write log file /scratch/dog/darshan_logs/dog_higrad_driver_noCBE_id501442_2-26-49816-14771330631875741401.darshan_partial
>> 
>> --
>> David Gunter
>> HPC-5: Applications Readiness Team
>> 
>> 
>> 
>> 
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>> 
> 
> -- 
> Rob Latham
> Mathematics and Computer Science Division
> Argonne National Lab, IL USA