LCI v2.0.0-dev
For Asynchronous Multithreaded Communication
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Changelog v1.7.7

Change log for LCI v1.7.7

Major Changes

  • Make LCI more robust with the libfabric/cxi provider.
    • new rendezvous protocol write.
    • more assertions.
  • Remove sysconf from malloc critical path.
    • Can be a major performance bottleneck on some platform (such as Frontera).
  • New LCI network backend: UCX.
  • Make LCI_sync_test/wait thread-safe against other LCI_sync_test/wait.

Breaking Changes

Other Changes

  • Update spack package.py; make LCI_progress thread-safe by default.
  • By default, configure cmake to install all lci executables.
  • Refactor rendevzous protocol code; add rendezvous protocol selection (LCI_RDV_PROTOCOL=write/writeimm).
  • Enable the env var LCI_BACKEND_TRY_LOCK_MODE for ofi backend.
  • Let LCT Logger also report hostname.
  • Add a field (packet) to LCII_context_t.
  • Add sendmc: send medium with completion notification.
  • Improve LCT hostname setup.
  • Refactor performance counters: "on-the-fly" and "on-the-fly-lw" modes.
  • Add(lct): add argument parser to LCT.
  • Add(lct_tbarrier): add thread barrier to LCT.
  • Add(many2many_random): new example many2many_random.
  • Add LCI_VERSION macros.
  • Improve LCI cmake config file.
  • Add(putmac): put medium with completion.
  • Rename LCT log ctx from lci to lct; add log for pmi.
  • Improve LCT_Assert: only evaluate the string after asserting failed.
  • Remove fflush(stderr).
  • Add assertion to pmi.
  • Improve(ofi backend): better way to call fi_cq_readerr.
  • Make mpi_pt2pt also works for singleton case.
  • Add more log outputs to lct pcounter.
  • Fix lct_parse_pcounter.py.
  • Add try_lock_mode: none, global, global_b.
  • Improve PMI: add cmake option to turn off PMI1/PMI2 compilation.

Fixed Issues

  • Fix bugs with LCII_make_key (possibly just a refactoring intead of a bug fixing).
  • Fix lct log uninitialized error.
  • Fix lci-ucx: link to pthreads.
  • Fix LCI_IBV_ENABLE_TD option.
  • Fix op undercount and buffer overflow for non-power-of-two (#67).
  • Fix cache padding in device.
  • Fix spack package pmix option.
  • Fix README typo.
  • Fix lcit initData: affect lcitb's performance.
  • Fix try_lock_mode.