Changes between Version 39 and Version 40 of FeaturesofPdaf


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Timestamp:
Jul 28, 2016, 1:34:40 PM (4 years ago)
Author:
lnerger
Comment:

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  • FeaturesofPdaf

    v39 v40  
    5353 * Linux Desktop machine, Ubuntu 12.04, ifort compiler
    5454 * Linux Desktop machine, Ubuntu 12.04, gfortran, OpenMPI
    55  * Notebook Apple !MacBook, Mac OS X 10.9, gfortran, OpenMPI
    56  * SGI Altrix !UltraViolet, SLES 11 operating system, ifort compiler, SGI MPT
     55 * Notebook Apple !MacBook, Mac OS X 10.11, gfortran, OpenMPI
     56 * SGI Altix !UltraViolet, SLES 11 operating system, ifort compiler, SGI MPT
    5757 * Cray XC30 and XC40, Cray compiler CCE 8.3.5, MPICH
    5858
     
    6161The regular tests use a rather small configuration with a simulated model. This model is also included in the test suite of the downloadable PDAF package.
    6262In addition, the scalability of PDAF was examined with a real implementation with the finite element ocean model (FEOM, Danilov et al., A finite-element ocean model: Principles and evaluation. Ocean Modeling 6 (2004) 125-150). In these tests up to 4800 processor cores of a supercomputer have been used (see [PublicationsandPresentations Nerger and Hiller (2013)]).
    63 To examine PDAF's behavior with large-scale cases, experiments with the simulated model have been performed. By now the biggest case had a state dimension of 6.0^.^10^10^. An observation vector of size 1.2^.^10^9^ was assimilated. For these experiments, the computations used 12000 processor cores. In this case, the distributed ensemble array occupied about 2 GBytes of memory for each core. The overall largest number of processes with which PDAF was validated was 16800 processor cores.
     63To examine PDAF's behavior with large-scale cases, experiments with the simulated model have been performed. By now the biggest case had a state dimension of 1.2^.^10^11^. An observation vector of size 2.4^.^10^9^ was assimilated. For these experiments, the computations used 12000 processor cores. In this case, the distributed ensemble array occupied about 2 GBytes of memory for each core. The overall largest number of processes with which PDAF was validated was 16800 processor cores.