Stable maintenance release (debugging and style)

The past couple of months have seen almost exclusively style and debugging changes in Qrack. (We experimented with fixed-point math for certain applications, but it was only suitable on GNU/Linux, and the experiments mostly proved we are better leaving out fixed-point for now.) This release compared the current head of main branch to the state of Qrack about 2 months ago and whittled down the diff to a small and trustworthy set of bug fixes and adjustments according to style guide.

This release might constitute a relatively "complete" state of the core Qrack project, for a significant amount of time into the future. (Most future development is likely to focus on building out support for other quantum software frameworks.)

(Note that releases of PyQrack now aim to be semantic over build artifacts.)

Happy Qracking! You rock!

Full Changelog:
v1.30.20...v1.30.22
unitaryfund/qrack@vm6502q.v9.9.23...vm6502q.v9.9.28

sha1sum results:
d77818655d1601de8968044b772fb44fe9acafa0 pyqrack-1.30.22-py3-none-macosx_12_0_x86_64.whl
74ef0bd8d2ad1bf36813cebf7bc28b708f362376 pyqrack-1.30.22-py3-none-macosx_13_0_x86_64.whl
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f556473d0494a602c1e90c995b6e9c3f83b37be7 pyqrack-1.30.22.tar.gz

QBdt debugging

QBdt error amortization suffered from an out-of-precision bug; this has been (completely) fixed.

(Note that release number is being considered semantic relative to artifacts.)

Full Changelog:
unitaryfund/qrack@vm6502q.v9.9.22...vm6502q.v9.9.23
v1.30.16...v1.30.20

sha1sum results:
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6acf6699f14ebba9f5cbb7f4d8a861f009a03cc8 pyqrack-1.30.20-py3-none-macosx_13_0_x86_64.whl
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OpenCL kernel (and other) optimizations; Ubuntu PowerPC fix

Various micro-optimizations have been added, including OpenCL kernel optimizations. Because of OpenCL kernel updates, perform the following commands as necessary in the qrack repository directory:

$ make clean
$ cmake ..
$ ./qrack_cl_precompile

Full Changelog:
unitaryfund/qrack@vm6502q.v9.9.13...vm6502q.v9.9.22
v1.30.15...v1.30.16

sha1sum results:
da683aa4aefc18ad75034384feb40a03b5f93010 pyqrack-1.30.16-py3-none-macosx_12_0_x86_64.whl
adffc30770d521dd2d93f6c0f3bd0aebeca03c8b pyqrack-1.30.16-py3-none-macosx_13_0_x86_64.whl
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QUnitStateVector and QEngineOCL debugging

A new class QUnitStateVector can hold Schmidt-decomposed representation of state vectors. For now, specifically, it is used only for near-Clifford simulation with QUnitClifford.

A long-standing edge case in QEngineOCL::MAll() has also been fixed.

Full Changelog: v1.30.13...v1.30.15

sha1sum results:
7263691ef64df4f49b4e43dab4bb3580d9285b84 pyqrack-1.30.15-py3-none-macosx_12_0_x86_64.whl
3fff7779ae8609a6a40c09ee10ccf71a238f3817 pyqrack-1.30.15-py3-none-macosx_13_0_x86_64.whl
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7f9dbda41a20006a71d473ed15306490425b6cac pyqrack-1.30.15.tar.gz

Random number generation improvements

Minor improvements have been made to Qrack's random number generator API. Most importantly, 32 divisions have been replaced with 32 multiplications when generating a random float with Rand(). Another possible point of improvement is that most-significant bit of the raw random bit stream now corresponds with most-significant bit of Rand(), where some devices and services for random number generation will tend to prioritize most-significant bit as slightly less biased for randomness than least-significant.

Full Changelog: unitaryfund/qrack@vm6502q.v9.9.8...vm6502q.v9.9.9

sha1sum results:
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9aec480f31c5fb852d145b8d88219dffeaf07c0e pyqrack-1.30.13-py3-none-macosx_13_0_x86_64.whl
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678b73c30d00c6106d131eaec4ea2104a3cff739 pyqrack-1.30.13.tar.gz

Debug shared library observables API

This release fixes bugs in the observables API of the shared library. (It also fixes 16-bit floating-point builds, but this does not affect the packaged artifacts.)

Full Changelog: unitaryfund/qrack@vm6502q.v9.9.7...vm6502q.v9.9.8

sha1sum results:
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869ea76c24c3d628d774ef48bf63ce91c6f6531b pyqrack-1.30.11-py3-none-macosx_13_0_x86_64.whl
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QUnit refactor

This patch release refactors QUnit (isSchmidtDecompose) for code clarity and reuse. No bugs have been fixed; no features have been added; the performance differential might be entirely negligible. However, the improvement in source code is authoritative.

Full Changelog: unitaryfund/qrack@vm6502q.v9.9.6...vm6502q.v9.9.7

sha1sum results:
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aeba254f3e700507c4c6a5e940bccf25da128989 pyqrack-1.30.8-py3-none-macosx_13_0_x86_64.whl
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Fixed-point QUnit

QUnit now takes advantage of fixed-point math, when available. (This should only improve QUnit precision while keeping the same rounding thresholds.)

Full Changelog: unitaryfund/qrack@vm6502q.v9.9.1...vm6502q.v9.9.6

sha1sum results:
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aaacba40195b4c5dc8058ce3840a342c5e1e24b9 pyqrack-1.30.7-py3-none-macosx_13_0_x86_64.whl
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352a48e9980022a95c60c12bb44dd3595ad3fb61 pyqrack-1.30.7-py3-none-manylinux_2_39_x86_64.whl
ee4332635b9d2ac2667c889df9be440a60d0fb3b pyqrack-1.30.7-py3-none-win_amd64.whl
4aa1d7a29ac458600810dfcee3935292b2033aed pyqrack-1.30.7.tar.gz

Debug multi-GPU Clifford+RZ environment variable

This release fixes a bug that prevented custom tuning of the maximum ancillary qubit count in QStabilizerHybrid via QRACK_MAX_PAGING_QB. (This mostly affects cases of multi-GPU simulation with near-Clifford optimization, only.)

Full Changelog: v1.30.1...v1.30.2

sha1sum results:
575acf638cc8f711b81f403f574f776e7bb7eac6 pyqrack-1.30.2-py3-none-macosx_12_0_x86_64.whl
89aab03016376ff71bf5c2de32c102c5c2bd1e18 pyqrack-1.30.2-py3-none-macosx_13_0_x86_64.whl
5861ed30b2c4f6dfd16c5b28f1335841e0ad4428 pyqrack-1.30.2-py3-none-macosx_14_0_arm64.whl
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cf601f140622e7aa614e6ec22d5802b550748080 pyqrack-1.30.2-py3-none-win_amd64.whl
21beafdd402d3324d5456805ce08a1cb4f732243 pyqrack-1.30.2.tar.gz

Mac 12 and 13 artifacts

This release fixes the Mac 12 and Mac 13 release artifacts.

Full Changelog: v1.30.0...v1.30.1

sha1sum results:
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fbb7de2b5b082e090a642424216dbf85dbd9cd89 pyqrack-1.30.1.tar.gz