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  1. Things that can affect performance

    HDF5 performance, such as speed, memory usage, and storage efficiency can be affected by how an HDF5 file is accessed or stored. Listed below are performance … . Modify the metadata cache settings to minimize the size and growth of the cache as much as possible without decreasing performance. By default the metadata cache
    HDF Knowledge BaseApr 09, 2019
  2. Are there performance metrics for working with HDF5 files?

    No. Performance depends on the HDF5 file, the application, and the platform and platform settings. If your HDF5 file contains a simple contiguous dataset, and the application reads and writes to the entire dataset, then performance should be close to the system I/O performance. If your HDF5 file is very complex
    HDF Knowledge BaseNov 29, 2017
  3. Linux memory handling and performance

    I am having performance problems. The memory runs down to where it requires swapping, and then the system is very slow. Using "top" I can see that the memory … degrade in performance as a result). We theorize that using something like fasdvise or fsync would maybe let us control the behavior of this buffer. Currently, I
    HDF Knowledge BaseAug 14, 2017
  4. How to improve performance with Parallel HDF5

    http://www.nersc.gov/users/computationalsystems/hopper/filestorageandio/ Here are some general parameters that users should consider tuning when they see slow I/O performance from HDF5: HDF5 parameters: Chunk size and dimensions: If the application is using chunked dataset storage, performance usually varies depending on the chunk size and how the chunks are aligned
    HDF Knowledge BaseDec 14, 2017
  5. Performance: Parallel I/O with Chunking Storage

    the same shape for both the memory space and file space. For example, the following case may cause bad performance: file space: 2D: the first dimension 1 … memory space: 2D: the first dimension 1, the second dimension DMAX Then, the performance may be much improved. faq hdf5 kbarticle parallel
    HDF Knowledge BaseJul 13, 2017
  6. What performance can you expect from Parallel HDF5?

    HDF5 cannot do better than MPI I/O on your system. Usually HDF5 parallel applications have little overhead over MPI I/O applications on the same system. If MPI I/O performs well, then you should expect good performance from Parallel HDF5. If you want to compare the performance of MPI I/O and Parallel HDF5 on your
    HDF Knowledge BaseJul 14, 2017
  7. Performance-wise, how does HDF5 compare to a relational database?

    and not to compete with them. faq hdf5 kbarticle performance database
    HDF Knowledge BaseNov 29, 2017
  8. Performance Issues

    HDF Knowledge BaseJul 14, 2017
  9. HDF5 Performance

    HDF Knowledge BaseNov 29, 2017
  10. Are there ways to improve performance when accessing a file that has many groups and many attributes?

    If you have performance problems accessing an HDF5 file with many groups and many attributes, there are some things you can do: Make sure you set … the effort. This would depend on the use case scenario. faq hdf5 kbarticle performance
    HDF Knowledge BaseDec 13, 2017