NERSCPowering Scientific Discovery Since 1974

Open Issues

Resolved -- Job cannot be executed

January 3, 2012 by Helen He | 0 Comments

Symptom:

The problem happens mostly to interactive batch jobs, but it happens to regular batch jobs as well.  It usually happens when user does ctrl-C at the "qsub -I" command, but it also happens when user does nothing.

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Resolved: Pathscale/4.0.9 not compatible with default libraries

October 14, 2011 by Helen He | 0 Comments

Symptom:

New xt-libsci/11.x.x does not have pathscale support. Other default libraries (netcdf, hdf5, fftw, petsc, etc.) have no pathscale/4.0.9 support.

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Resolved -- Linking error when mixing C++ and Fortran using PGI under xt-asyncpe/4.9

July 1, 2011 by Helen He | 0 Comments

Symptom

Mixed C++ and Fortran codes had the linking error using PGI under xt-asyncpe:

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Resolved -- Incorrect path with bash under csh

July 1, 2011 by Helen He | 0 Comments

Symptom:

With default csh or tcsh shell, entering bash (as login or non-login) messes up the path, causing qsub or ftn command either not found or uses wrong path.  Unloadind and loading the PrgEnv-xxx module again may partially address the problem.

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Variation in application runtime

June 9, 2011 by Katie Antypas | 0 Comments

Some users have reported variation in application runtime while Hopper is running in production mode with many applications running concurrently.  NERSC also sees runtime variability in some benchmarking codes.  NERSC is exploring the causes of runtime variability hypothesizing it could be caused by the placement of an application across the network,  contention for resources or a from a particular mix of jobs on the system.  

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