Verificarlo v0.3.0

[v0.3.0] 2020/04/02

Added

• Support for LLVM up to 9.0.1
• Add delta-debug to Verificarlo to pinpoint numerical bugs
• Add a newer backend to detect and measure the impact of cancellations
• Add bitmask backend (libinterflop_bitmask.so), a fast first order model of noise
• Add DAZ/FTZ options for flushing subnormal numbers to 0
  • --daz: denormals-are-zero, flushes subnormal inputs to 0
  • --ftz: flush-to-zero, flushes subnormal output to 0
• Add options for interflop_ieee backend
  • --debug-binary: enable binary debug output
  • --no-backend-name: do not print backend name in debug output
  • --print-new-line: add a new line after debug output
  • --print-subnormal-normalized: print subnormal number in the normalized form
• Separate virtual precisions for binary32 and binary64 values
• Add an option for selecting the seed of the RNG
• Add VFC_BACKENDS_SILENT_LOAD environment variable for disabling messages when a backend is loaded
• Add VFC_BACKEND_LOGGER environment variable for enabling/disabling the logger
• Add VFC_BACKEND_COLORED_LOGGER environment variable for enabling/disabling the colored messages

Changed

• Update configure.ac for checking special types and features
• Optimize and factorize interlop_mca_mpfr and interflop_mca backends
• Upgrade python scripts to Python3
• Backends mca and mca-mpfr are bitwise comparable

Fixed

• Fix issues in interflop_ieee backend
• Fix multiple vfc_init calls
• Use quote around PWD to support paths with spaces
• Fix bug in interflop_mca backend
• Fix GPG key error in .travis.yml
• Fix issue with the verbose mode
• Fix LIBS dependencies in configure.ac
• Fix bug in libVFCInstrument which sometimes leads to not properly instrumented operations
• Check that at least one loaded backend provides operations

Verificarlo v0.2.3

[v0.2.3] 2019/08/19

Added

• Use Interflop interface
• Backend interflop_ieee which uses standard IEEE 754 arithmetic
• Backend are loadead with the VFC_BACKENDS environment variable
• Options for backends are passed with VFC_BACKENDS="/path/to/interflop_backend.so --option1 --option2 ..."

Fixed

• Correctly detect non supported fp types
• Fix handling of boolean vectors
• Fix memory leak in quad backend

Removed

• Environment variables VERIFICARLO_BACKENDS, VERIFICARLO_PRECISION and VERIFICARLO_MCAMODE

Verificarlo v0.2.2

[v0.2.2] 2019/08/07

• Unstable branch detection with gcov
• Branch instrumentation of FCMP instructions
• Fixed linking of shared libraries
• Fixed shell expansion in optional arguments
• Fix bug with configure LLVM flags in m4/ax_llvm
• Improved support for complex inclusion/exclusion schemes
• Add new tests

Verificarlo v0.2.1

[v0.2.1] 2018/11/22

• Support for LLVM up to 4.0.1
• Command line option to instrument a list of functions
• Multiple bug fixes in the backends
• Fix for Boost codes; verificarlo is initialized before C++ constructors
• Fix bug in vfcInstrumenter for parentless instructions
• In RR mode exact operations are preserved
• Add Kahan 2x2 test
• Add RR exact operations tests

Verificarlo v0.2.0

[v0.2.0] 2016/12/09

• Support for LLVM up to 3.8
• Support for standalone installation with make install
• Experimental VTK post-processing
• Fix bug with unsupported fortran extensions

Prerelease of the debian package for v0.2.0

This is a prerelease of the debian package for upcoming v0.2.0.

[v0.2.0] 2016/12/09
* Support for LLVM up to 3.8
* Support for standalone installation with make install
* Experimental VTK post-processing
* Fix bug with unsupported fortran extensions