1. 28 Apr, 2018 1 commit
  2. 20 Apr, 2018 1 commit
    • Martin Bauer's avatar
      Bug fix for shared library cache -> switched to atomic filesystem write · 956c89a0
      Martin Bauer authored
      - when running multiple pystencils instances, sometimes errors happened
        because one process might have partially written a cached file, which
        is already read before writing was finished
      -> switched to "atomic write" (only on linux yet) that uses os.rename
         which is guaranteed to be atomic
      956c89a0
  3. 13 Apr, 2018 1 commit
  4. 10 Apr, 2018 4 commits
  5. 06 Feb, 2018 2 commits
    • Martin Bauer's avatar
      Changed parameter bind caching for CPU and GPU kernels · d30c5f73
      Martin Bauer authored
      - previously all objects where cached by id()
      - for waLBerla simulations in each time step a new np.array view
        is created from the waLBerla field. Each of these views has a
        different id -> caching did not work for waLBerla setups
      - changed hash for numpy arrays: instead of id, a tuple of
        (dataPtr, strides, shapes) is used as hash input
      d30c5f73
    • Martin Bauer's avatar
      New Boundary step system / fixes in lbmpy phasefield · b148d508
      Martin Bauer authored
      - scaling interface width eta instead of surface tensions tau to correct
        interface profile & surface tensions
      b148d508
  6. 31 Jan, 2018 1 commit
  7. 19 Jan, 2018 1 commit
    • João Victor Tozatti Risso's avatar
      Code generation for field serialization into buffers · 979ee93b
      João Victor Tozatti Risso authored and Martin Bauer's avatar Martin Bauer committed
      Concept: Generate code involving the (un)packing of fields (from)to linear
      (1D) arrays, i.e. (de)serialization of the field values for buffered
      communication.
      
      A linear index is generated for the buffer, by inferring the strides and
      variables of the loops over fields in the AST. In the CPU, this information is
      obtained through the makeLoopOverDomain function, in
      pystencils/transformations/transformations.py. On CUDA, the strides of
      the fields (excluding buffers) are combined with the indexing variables to infer
      the indexing of the buffer.
      
      What is supported:
          - code generation for both CPU and GPU
          - (un)packing of fields with all the memory layouts supported by
          pystencils
          - (un)packing slices of fields (from)into the buffer
          - (un)packing subsets of cell values from the fields (from)into the buffer
      
      Limitations:
      
      - assumes that only one buffer and one field are being operated within
      each kernel, however multiple equations involving the buffer and the
      field are supported.
      
      - (un)packing multiple cell values (from)into the buffer is supported,
      however it is limited to the fields with indexDimensions=1. The same
      applies to (un)packing subset of cell values of each cell.
      
      Changes in this commit:
      
      - add the FieldType enumeration to pystencils/field.py, to mark fields
      of various types. This is replaces and is a generalization of the
      isIndexedField boolean flag of the Field class. For now, the types
      supported are: generic, indexed and buffer fields.
      
      - add the fieldType property to the Field class, which indicates the
      type of the field. Modifications were also performed to the member
      functions of the Field class to add this property.
      
      - add resolveBufferAccesses function, which replaces the fields marked
      as buffers with the actual field access in the AST traversal.
      
      Miscelaneous changes:
      
      - add blockDim and gridDim variables as CUDA indexing variables.
      979ee93b
  8. 03 Dec, 2017 1 commit
  9. 26 Oct, 2017 1 commit
  10. 17 Oct, 2017 1 commit
  11. 10 Oct, 2017 2 commits
  12. 09 Oct, 2017 1 commit
    • Martin Bauer's avatar
      Vectorization & Type system overhaul · ea847bc5
      Martin Bauer authored
      - first vectorization tests are running
      - type system: use memoized getTypeOfExpression
      - casts are done using sp.Function('cast')
      - C backend adapted for vectorization support
      - AST nodes can required optional headers
      ea847bc5
  13. 06 Jul, 2017 1 commit
  14. 24 Apr, 2017 1 commit
  15. 20 Apr, 2017 1 commit
  16. 11 Apr, 2017 1 commit
    • Martin Bauer's avatar
      Bugfix in JIT cacheing · 93b1d694
      Martin Bauer authored
      - cache relied on uniqueness of  python id()
      - id may be reused if object is freed
      -> object must be held alive
      -> kernel keeps all it arguments it was ever called with, alive (problematic in terms of memory consumption)
      93b1d694
  17. 30 Mar, 2017 1 commit
  18. 24 Mar, 2017 2 commits
  19. 14 Mar, 2017 1 commit
    • Martin Bauer's avatar
      pystencils: fields can now contain structs · ec3faf51
      Martin Bauer authored
      - this extension is necessary for more generic boundary treatment
      - cells can now be structs, i.e. contain different data types
      - instead of having numeric index dimensions, one can use the index per cell to adress struct elements
      ec3faf51
  20. 13 Mar, 2017 1 commit
    • Martin Bauer's avatar
      pystencils: Cleaned up type system · c8b455fe
      Martin Bauer authored
      - use data type class consistently instead of strings (in TypedSymbol, Field and jit module)
      - new datatype class is based on numpy types with additional specifier information (const and restrict)
      - translation between data type class and other modules (numpy, ctypes)
      c8b455fe
  21. 05 Mar, 2017 1 commit
    • Martin Bauer's avatar
      lbmpy: various small improvements · 83e87342
      Martin Bauer authored
      - getShearRelaxationRate is a free function now -> works also with cumulant methods
      - better error message when calling kernels with wrong or too few parameters
      - entropic & incompressible is not working by default due to pdf shift -> added NotImplemented exception
      - new creation function for 'raw_mrt' where all relaxation rates can be independently specified
      - enhanced entropic creation funtion, supports omega output field now
      83e87342
  22. 02 Mar, 2017 2 commits
  23. 01 Mar, 2017 1 commit
    • Martin Bauer's avatar
      pystencils: cpujit · dd17cd30
      Martin Bauer authored
      - windows support
      - automatic caching and creation of shared library with all generated kernels
      - restrict keyword and function prefixes are preprocessor macros now -> easier to generate one code for linux, cuda, windows
      dd17cd30
  24. 23 Feb, 2017 1 commit
  25. 21 Feb, 2017 3 commits
  26. 13 Feb, 2017 3 commits
    • Michael Kuron's avatar
      Python 2.7 compatibility · cb05590d
      Michael Kuron authored and Martin Bauer's avatar Martin Bauer committed
      This commit makes the Python code backwards compatible down to Python 2.7. Previously it would only run on Python 3.5 and up.
      
      Problems fixed included:
      - `time.perf_counter()` doesn't exist
      - all classes need to be new-style
      - `functools.lru_cache` doesn't exist
      - only the last argument to a function call can be `*`-expanded
      - the `nonlocal` keyword doesn't exist
      - metaclasses are used with a different syntax
      - `yield from` doesn't exist
      - `tempdir.TemporaryDirectory` doesn't exist
      - iterators need a `next()` method
      cb05590d
    • Martin Bauer's avatar
      a875e22e
    • Martin Bauer's avatar
      pystencils: additional checks when calling kernel · 184489d0
      Martin Bauer authored
      - check that fixed size kernels are called with arrays of the correct size
      - checks that layout of compilation matches runtime layout
      - not allowed any more to mix fixed & and variable sized fields in a kernel
      184489d0
  27. 08 Dec, 2016 2 commits
  28. 28 Nov, 2016 1 commit