Changes between Version 70 and Version 71 of FeaturesofPdaf


Ignore:
Timestamp:
Dec 19, 2019, 5:51:31 PM (9 months ago)
Author:
lnerger
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • FeaturesofPdaf

    v70 v71  
    7373The 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.
    7474In 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)]).
    75 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 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.
     75
     76To 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 3.686^.^10^11^. An observation vector of size 7.373^.^10^9^ was assimilated. For these experiments, the computations used 24576 processor cores. In this case, the distributed ensemble array occupied about 2.86 GBytes of memory for each core.
    7677
    7778