IOR version 4.0.0

New major features:

• Add PMDK backend (Adrian Jackson)
• Add CHFS backend (Osamu Tatebe)
• Add AIO backend (Julian Kunkel)
• New S3 backend (Julian Kunkel)
• New md-workbench benchmark (Julian Kunkel)
• New BFS backend (Osamu Tatebe)
• Add GPUDirect Storage support (Julian Kunkel)

New minor features:

• Updated DAOS backend to match latest DAOS APIs (Mohamad Chaarawi)
• Updated HDF5 backend (Jordan Henderson)
• Improved Spectrum Scale hint support (Pidad D'Souza)
• Add CSV output (Sebastian Oeste)
• Improved Gfarm support (Osamu Tatebe)
• Updated HDFS backend
• MDTest now has a directory renaming test
• Add prologue/epilogue support (GUAN Xin)
• Add stronger randomized data using golden primes (Glenn K. Lockwood)
• Add dummy backend (Julian Kunkel)
• Improved CephFS support (Pablo Llopis)
• Improved PnetCDF support (Wei-keng Liao)

Bugfixes:

• Expansive fixes to mdtest correctness (Julian Kunkel)

IOR version 4.0.0 release candidate 1

New major features:

• Add PMDK backend (Adrian Jackson)
• Add CHFS backend (Osamu Tatebe)
• Add AIO backend (Julian Kunkel)
• New S3 backend (Julian Kunkel)
• New md-workbench benchmark (Julian Kunkel)
• New BFS backend (Osamu Tatebe)
• Add GPUDirect Storage support (Julian Kunkel)

New minor features:

• Updated DAOS backend to match latest DAOS APIs (Mohamad Chaarawi)
• Updated HDF5 backend (Jordan Henderson)
• Improved Spectrum Scale hint support (Pidad D'Souza)
• Add CSV output (Sebastian Oeste)
• Improved Gfarm support (Osamu Tatebe)
• Updated HDFS backend
• MDTest now has a directory renaming test
• Add prologue/epilogue support (GUAN Xin)
• Add stronger randomized data using golden primes (Glenn K. Lockwood)
• Add dummy backend (Julian Kunkel)
• Improved CephFS support (Pablo Llopis)
• Improved PnetCDF support (Wei-keng Liao)

Bugfixes:

• Expansive fixes to mdtest correctness (Julian Kunkel)

IOR version 3.3.0

New major features:

• Add CephFS AIORI (Mark Nelson)
• Add Gfarm AIORI (Osamu Tatebe)
• Add DAOS AIORI (Mohamad Chaarawi)
• Add DAOS DFS AIORI (Mohamad Chaarawi)
• -B option has been replaced with --posix.odirect

New minor features:

• Display outlier host names (Jean-Yves Vet)
• Enable global default dir layout for subdirs in Lustre (Petros Koutoupis)
• Removed pound signs (#) from mdtest output file names (Julian Kunkel)
• Print I/O hints from NCMPI (Wei-keng Liao)
• Add mknod support to mdtest (Gu Zheng)
• Refactor AIORI-specific options (Julian Kunkel)
• Enable IME native backend for mdtest (Jean-Yves Vet)
• Enable mkdir/rmdir to IME AIORI (Jean-Yves Vet)
• Add HDF5 collective metadata option (Rob Latham)
• Add support for sync to AIORIs (Julian Kunkel)

General user improvements and bug fixes:

• Allocate aligned buffers to support DirectIO for BeeGFS (Sven Breuner)
• Added IOPS and latency results to json output (Robert LeBlanc)
• Fixed case where numTasks is not evenly divisible by tasksPerNode (J. Schwartz)
• Fix several memory leaks and buffer alignment problems (J. Schwartz, Axel Huebl, Sylvain Didelot)
• Add mdtest data verification (Julian Kunkel)
• Clean up functionality of stonewall (Julian Kunkel)
• Fix checks for lustre_user.h (Andreas Dilger)
• Make write verification work without read test (Jean-Yves Vet)
• Documentation updates (Vaclav Hapla, Glenn Lockwood)
• Add more debugging support (J. Schwartz)

General developer improvements:

• Fix type casting errors (Vaclav Hapla)
• Add basic test infrastructure (Julian Kunkel, Glenn Lockwood)
• Conform to strict C99 (Glenn Lockwood)

Known issues:

• S3 and HDFS backends may not compile with new versions of respective libraries (#25, #26, #301, #302)

3.2.2

• Fixed mdtest with multiple iterations showing wrong results (#281) (Julian Kunkel)

IOR version 3.3.0 release candidate 1

New major features:

• Add CephFS AIORI (Mark Nelson)
• Add Gfarm AIORI (Osamu Tatebe)
• Add DAOS AIORI (Mohamad Chaarawi)
• Add DAOS DFS AIORI (Mohamad Chaarawi)

New minor features:

• Display outlier host names (Jean-Yves Vet)
• Enable global default dir layout for subdirs in Lustre (Petros Koutoupis)
• Removed pound signs (#) from mdtest output file names (Julian Kunkel)
• Print I/O hints from NCMPI (Wei-keng Liao)
• Add mknod support to mdtest (Gu Zheng)
• Refactor AIORI-specific options (Julian Kunkel)
• Enable IME native backend for mdtest (Jean-Yves Vet)
• Enable mkdir/rmdir to IME AIORI (Jean-Yves Vet)
• Add HDF5 collective metadata option (Rob Latham)
• Add support for sync to AIORIs (Julian Kunkel)

General user improvements and bug fixes:

• Allocate aligned buffers to support DirectIO for BeeGFS (Sven Breuner)
• Added IOPS and latency results to json output (Robert LeBlanc)
• Fixed case where numTasks is not evenly divisible by tasksPerNode (J. Schwartz)
• Fix several memory leaks and buffer alignment problems (J. Schwartz, Axel Huebl, Sylvain Didelot)
• Add mdtest data verification (Julian Kunkel)
• Clean up functionality of stonewall (Julian Kunkel)
• Fix checks for lustre_user.h (Andreas Dilger)
• Make write verification work without read test (Jean-Yves Vet)
• Documentation updates (Vaclav Hapla, Glenn Lockwood)
• Add more debugging support (J. Schwartz)

General developer improvements:

• Fix type casting errors (Vaclav Hapla)
• Add basic test infrastructure (Julian Kunkel, Glenn Lockwood)
• Conform to strict C99 (Glenn Lockwood)

Known issues:

• S3 AIORI may not compile with new versions of aws4c (#25, #26)

3.2.1

• Fixed a memory protection bug in mdtest (Julian Kunkel)
• Fixed correctness bugs in mdtest leaf-only mode (#147) (rmn1)
• Fixed bug where mdtest attempted to stat uncreated files (Julian Kunkel)

IOR version 3.2.0

New major features:

• mdtest now included as a frontend for the IOR aiori backend (Nathan Hjelm,
  LANL)
• Added mmap AIORI (Li Dongyang, DDN)
• Added RADOS AIORI (Shane Snyder, ANL)
• Added IME AIORI (Jean-Yves Vet, DDN)
• Added stonewalling for mdtest (Julian Kunkel, U Reading)

New minor features:

• Dropped support for PLFS AIORI (John Bent)
• Added stoneWallingWearOut functionality to allow stonewalling to ensure that
  each MPI rank writes the same amount of data and captures the effects of slow
  processes (Julian Kunkel, DKRZ)
• Added support for JSON output (Enno Zickler, U Hamburg; Julian Kunkel, U
  Reading)
• Added dummy AIORI (Julian Kunkel, U Reading)
• Added support for HDF5 collective metadata operations (Rob Latham, ANL)

General user improvements:

• BeeGFS parameter support (Oliver Steffen, ThinkParQ)
• Semantics of -R now compares to expected signature (-G) (Julian Kunkel,
  DKRZ)
• Improved macOS support for ncmpi (Vinson Leung)
• Added more complete documentation (Enno Zickler, U Hamburg)
• Assorted bugfixes and code refactoring (Adam Moody, LLNL; Julian Kunkel, U
  Reading; Enno Zickler, U Hamburg; Nathan Hjelm, LANL; Rob Latham, ANL;
  Jean-Yves Vet, DDN)
• More robust support for non-POSIX-backed AIORIs (Shane Snyder, ANL)

General developer improvements:

• Improvements to build process (Nathan Hjelm, LANL; Ian Kirker, UCL)
• Added continuous integration support (Enno Zickler, U Hamburg)
• Added better support for automated testing (Julian Kunkel, U Reading)
• Rewritten option handling to improve support for backend-specific options
  (Julian Kunkel, U Reading)

Known issues:

• api=RADOS cannot work correctly if specified in a config file (via -f)
  because -u/-c/-p cannot be specified (issue #98)
• writeCheck cannot be enabled for write-only tests using some AIORIs such as
  MPI-IO (pull request #89)

IOR version 3.2.0 release candidate 2

Updates since 3.2.0rc1:

• Fixes an issue when compiling against newer versions of lustre_user.h
• Fixes a reporting issue in mdtest

IOR version 3.2.0 release candidate 1

New major features:

• mdtest now included as a frontend for the IOR aiori backend (Nathan Hjelm,
  LANL)
• Added mmap AIORI (Li Dongyang, DDN)
• Added RADOS AIORI (Shane Snyder, ANL)
• Added IME AIORI (Jean-Yves Vet, DDN)
• Added stonewalling for mdtest (Julian Kunkel, U Reading)

New minor features:

• Dropped support for PLFS AIORI (John Bent)
• Added stoneWallingWearOut functionality to allow stonewalling to ensure that
  each MPI rank writes the same amount of data and captures the effects of slow
  processes (Julian Kunkel, DKRZ)
• Added support for JSON output (Enno Zickler, U Hamburg; Julian Kunkel, U
  Reading)
• Added dummy AIORI (Julian Kunkel, U Reading)
• Added support for HDF5 collective metadata operations (Rob Latham, ANL)

General user improvements:

• BeeGFS parameter support (Oliver Steffen, ThinkParQ)
• Semantics of -R now compares to expected signature (-G) (Julian Kunkel,
  DKRZ)
• Improved macOS support for ncmpi (Vinson Leung)
• Added more complete documentation (Enno Zickler, U Hamburg)
• Assorted bugfixes and code refactoring (Adam Moody, LLNL; Julian Kunkel, U
  Reading; Enno Zickler, U Hamburg; Nathan Hjelm, LANL; Rob Latham, ANL;
  Jean-Yves Vet, DDN)
• More robust support for non-POSIX-backed AIORIs (Shane Snyder, ANL)

General developer improvements:

• Improvements to build process (Nathan Hjelm, LANL; Ian Kirker, UCL)
• Added continuous integration support (Enno Zickler, U Hamburg)
• Added better support for automated testing (Julian Kunkel, U Reading)
• Rewritten option handling to improve support for backend-specific options
  (Julian Kunkel, U Reading)

Known issues:

• api=RADOS cannot work correctly if specified in a config file (via -f)
  because -u/-c/-p cannot be specified (issue #98)
• writeCheck cannot be enabled for write-only tests using some AIORIs such as
  MPI-IO (pull request #89)

Tagged release featuring PLFS, HDFS, and S3 aioris

• includes support for PLFS (Jeff Inman, Brett Kettering, LANL)
• includes support for HDFS (Jeff Inman, LANL)
• includes support for S3 (Blair Crossman, Brett Kettering, LANL)
• option to use incompressible data transfers (Blair Crossman, LANL)
• code cleanup and general usability improvements (Rob Latham, ANL)