Release 0.12.2

• Added:

  • Conan as package manager.
  • res folder for resources.

• Changed:

  • Different upgrades: C++23, CMake 3.12, Python 3.8 to 3.12.
  • GitHub workflows and jobs.
  • File reorganization: docs, include, src, test.

• Removed:

  • Git submodules.
  • CMake folder.

Release 0.11.1: fix wheel size on Linux/GCC

This release doesn't include much change, it just allows us to upload our wheels to PyPI, they were becoming too large.

Release 0.11.0

A long-waited release...

Added

• CC backend:
  • support for cQASM 1.2 features through new IR
    • limitations
      • integer values must be non-negative
  • support for resource constrained scheduler
  • creates .map file reporting measurement statements present in input, to allow retrieving measurements downstream
• support for Python up to 3.11

Changed

• pass dec.Instructions: duration=0 in new-style decomposition rules now disables checking whether expansion fits, allowing automatic calculation of duration (and requiring scheduling after decomposition of such rules)
• CC backend:
  • now uses new IR
  • no longer requires key "cc" to be present in instructions that define gate decompositions
  • key "readout_mode" no longer used
    • classification of gates as measurement - which is used for the resource constrained scheduler, and to output a map of measurements - now based on signal definition ("signal/type" equals "measure" and "signal/value" non-empty)
    • classification of gates as real-time measurement now based on signal definition ("signal/type" equals "measure" and "signal/value" empty)
  • absence of key "cc" now implies empty "signal", so "cc": { "signal": [] } is no longer necessary
• passes and architectures self-register statically to their respective factories
• initial placer uses new IR and new MIP solver called HiGHS

Removed

• CC backend:
  • support for JSON key "pragma/break" for instruction definitions
  • macro expansion for JSON key instruction/signal/value (unused anyway)
• support for sweep points in API and the WriteSweepPointsPass
• support for Python up to and including 3.6

Fixed

• pass dec.Instructions
  • corrected ordering of instruction decomposition (which reversed multi-statement decompositions)
  • decomposed instructions were silently made unconditional, we now copy instruction condition to decomposed instructions

0.11.0-alpha.2 Test release

Test release to see if wheels for python 3.10 and recent manylinux versions are correctly created and pushed to pypi.

0.11.0-alpha.1 Test release

Test release to see if wheels for python 3.10 and recent manylinux versions are correctly created and pushed to pypi.

Release 0.10.0: new internal representation with full cQASM 1.2 control-flow support

Added

• scalability options for coping with large multi-core systems, including a progress bar for the mapping process
• initial implementation of the Diamond architecture developed for Fujitsu (lead by Stephan Wong)
• full cQASM 1.2 read and write support, with options for different version levels and various language quirks
• new internal representation that encompasses the entire cQASM 1.2 language, and has many new generalized platform features
• lossless conversion functions between the two IR representations until all passes have been converted to the new representation
• new pass-based decomposition logic that supports arbitrary cQASM 1.2 code for the expansion and doesn't clobber scheduling information
• new pass for converting structured cQASM 1.2 control flow to basic block form
• new list scheduler based on the new IR

Changed

• all written cQASM files are now in 1.2 format by default
• the cQASM reader no longer has a JSON configuration file for mapping cQASM gates to OpenQL gates; this translation is now part of OpenQL's platform data
• the old scheduler is replaced with a new implementation for most option variations, that outputs slightly different schedules
• statistics report output is also formatted slightly different, though information content is the same
• CC backend:
  • scheduling is now done using resource constraints by default

Fixed

• excessive memory usage and slow platform construction for large multi-core systems

Release 0.9.0: major internal improvements, architecture system, and pass management

Added

• architecture system: platform and compilation strategy defaults are now built into OpenQL, preventing the need for users to copypaste configuration files from the tests directory
• interface (C++ and Python) to compile cQASM 1.x
• allow 'wait' and 'barrier' in JSON section 'gate_decomposition'
• CC backend:
  • improved reporting on JSON semantic errors
  • added check for dimension of "instruments/qubits" against "instruments/ref_control_mode/control_bits"
  • added check for dimension of "instructions//cc/[signals,ref_signal]/value" against "instruments/ref_control_mode/control_bits"
  • added cross check of "instruments/ref_control_mode" against "instrument_definitions"
  • added support for "pragma/break" in JSON definition to define 'gate' that breaks out of loop
  • added support to distribute measurement results via DSM
  • added support for conditional gates
  • added compile option "--backend_cc_run_once"
  • added compile option "--backend_cc_verbose"

Changed

• pass management: instead of a hardcoded compilation strategy, the strategy can be adjusted and fine-tuned manually
• pass options: instead of doing everything with global options, global options were replaced with pass options as much as possible
• most documentation is now generated from code and can be queried using API calls
• scheduler resources are completely reworked to be made more generic
• major internal refactoring and restructuring to facilitate the above two things
• CC backend:
  • renamed JSON field "signal_ref" to "ref_signal"
  • renamed JSON field "ref_signals_type" to "signal_type"
  • changed JSON field "static_codeword_override" to be a vector with one element per qubit parameter. To edit a JSON file using Sublime, use Replace with Regular Expressions: find="static_codeword_override": ([0-9])+, replace="static_codeword_override": [\1]
  • adopted new module synchronization scheme ("seq_bar semantics", requires CC software >= v0.2.0, PycQED after commit 470df5b)
  • JSON field "instruction/type" no longer used by backend, use "instruction/cc/readout_mode" to flag measurement instructions
  • allow specification of 2 triggers in JSON field "control_modes/*/trigger_bits" to support dual-QWG
  • changed label in generated code from "mainLoop" to "mainLoop". Do not start kernel names with "" (this should be specified by the API)
  • removed initial 1 cycle (20 ns) delay at start of kernels (resulting from bundle start_cycle starting at 1)
  • correctly handle kernel names containing "_" in conjunction with looping (formerly duplicate labels could arise)
  • added "seq_out 0,1" to program start to allow tracing of actual program start

Removed

• CC-light code generation, as the CC-light is being phased out in the lab, and its many passes were obstacles for pass management and refactoring
• rotation optimization based on matrices; matrices in general were removed entirely because no one was using it
• the commute variation pass, as it has been superseded by in-place commutations within the scheduler
• the toffoli decomposition pass, as it wasn't really used; to decompose a toffoli gate, use generic platform-driven decomposition instead
• the defunct fidelity estimation logic from metrics.cc; this may be added again later, but requires lots of cleanup and isn't currently in use
• quantumsim and qsoverlay output; apparently this was no longer being used, and it was quite intertwined with the CC-light backend

Fixed

• changed register used for FOR loop, so it doesn't clash with delay setting
• fixed documentation for python setup and running tests
• various miscellaneous bugs, dangling pointers, and memory leaks

Release 0.8.1.dev4: test release for CI pipeline

Merge pull request #345 from QE-Lab/fix-release-process

Fix release process

CC backend support and other fixes

Added

• support for CC backend

Changed

Removed

Fixed

• fixed issue with duplicate kernel names
• updated json library to fix osx builds

Hotfix Release

Fixed

• fixed issue with correct python library picking on tud win systems

Changed

• re-factored folders