This is the third pre-release of the ADaptable Input Output System, ADIOS, version 2 (v2.1.1). This is a beta release with staging support and a stable API intended for users and developers to begin integration and testing of ADIOS 2 into their applications, libraries, and workflows. This version is not intended for production quality purposes.
Major additions from the previous v2.1.0 Beta release include:
- SST Engine for staging data memory-to-memory across applications
- Updated Fortran, C and Python bindings APIs
- Several bugs corrected for default write and read BPFile engine
- Added option for flexible number of substreams (subfiles) based on MPI aggregation for NxM writes (N=mpi processes, M = user defined number of files)
- Added High-Level APIs to each supported language. These APIs are based on the language native IO (C++: adios2::fstream, C: adios2_FILE*, Fortran: file handler, Python: io stream object)
- User Guide documentation moved to readthedocs: http://adios2-adaptable-io-system-version-2.readthedocs.io/en/latest/
| Feature | ADIOS 1.13 Support | ADIOS 2.1.1 Support |
|---|---|---|
| Write API | ||
| Local Variable | ✅ (Offsets, LocalDimensions) | ✅ (Start, Count) |
| Global Variable | ✅ (Global) | ✅ (Variable) |
| Joined Dimensions | ✅ | ✅ |
| Dimension Variable | ✅ | deprecated |
| Constant Dimension Variable | ❌ | ✅ |
| Selection | ✅ | partial |
| Memory Selection | ✅ | ❌ |
| Attributes | ✅ | ✅ |
| Transforms | ✅ | ❌ |
| Config XML | ✅ | ✅ |
| Threaded Operations | ❌ | ✅ |
| Time Aggregation | ✅ | ✅ |
| Collective Metadata | ✅ | ✅ |
| BP3 Format | ✅ | ✅ (bitmap stats deprecated) |
| BP4 Format | --- | ❌ |
| I/O Modes | ✅ (Transports) | beta |
| BP3 SubFile N-to-N | ✅ (POSIX) | ✅ |
| BP3 SubFile N-to-M | ✅ (MPI_Aggregate) | ✅ initial support |
| HDF5 | ✅ | ✅ |
| WAN (DataMan) | ❌ | ✅ |
| Read API | ✅ | ✅ |
| Utils | all compatible with ADIOS1.12 | |
| bpmeta | ✅ | ❌ |
| bpls | ✅ | partial bpls2 |
| bpdump | ✅ | ❌ |
| Language Support | ||
| C++ | ✅ through C | ✅ native |
| Python | ✅ Cython | ✅ PyBind11 |
| C | ✅ | ✅ |
| Fortran | ✅ | ✅ |
| Other | ||
| Automated testing | ❌ | ✅ (via CTest and GoogleTest) |
| Windows support | ❌ | ✅ (via CTest and GoogleTest) |