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Releases: vgvassilev/clad

Clad version 1.4

29 Feb 15:55
@vgvassilev vgvassilev
v1.4
4c22d42
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Clad version 1.4 Latest
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Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 1.4. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 1.4?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-7 to clang-17

Forward Mode & Reverse Mode

  • Improve handling of char and string literals

Reverse Mode

  • Add support for differentiating switch statements
  • Supportpassing pointers as call arguments
  • Fix pointer arithmetic for array types

Misc

  • Support BUILD_SHARED_LIBS=On

Fixed Bugs

300 313 636 735 748 753 774

Special Kudos

This release wouldn't have happened without the efforts of our contributors,
listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

A B (N)

Vassil Vassilev (9)
Vaibhav Thakkar (6)
maximusron (1)
bedupako12mas (1)
Parth (1)
Krishna Narayanan (1)
Aaron Jomy (1)

What's Changed

New Contributors

Full Changelog: v1.3...v1.4

Contributors

vgvassilev, vaithak, and 4 other contributors
Assets 2

Clad version 1.3

11 Feb 18:29
@vgvassilev vgvassilev
v1.3
eb6a4b4
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Clad version 1.3

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 1.3. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 1.3?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-7 to clang-17

Forward Mode

  • Make forward vector mode more robust:
    • Implement dedicated clad::matrix class
    • Add support for array arguments
    • Add support for call expressions
  • Add support for the 'non_differentiable' attribute

Reverse Mode

  • Fix computation of higher order functions
  • Introduce experimental To-Be-Recorded Analysis in Clad
  • Improve storing of LHS/RHS in multiplication/division operators
  • Add initial support for pointers
  • Improve the overall performance by reducing the tape storage

Misc

  • Add support for std::min, std::max and std::clamp functions
  • Fix strong symbol definitions in Differentiator.h

Fixed Bugs

49 86 197 275 314 429 439 441 465 606 620 650 655 660 664 667 669 672 676 681 687 689

Special Kudos

This release wouldn't have happened without the efforts of our contributors,
listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

A B (N)

Vaibhav Thakkar (43)
Vassil Vassilev (26)
Alexander Penev (8)
petro.zarytskyi (6)
dependabot[bot] (4)
Parth (2)
Rishabh Bali (1)
QuillPusher (1)
Krishna-13-cyber (1)
daemondzh (1)
Aaron Jomy (1)

What's Changed

Read more

Contributors

vgvassilev, alexander-penev, and 8 other contributors
Assets 2

Clad version 1.2

18 Jul 15:12
@vgvassilev vgvassilev
v1.2
fc6c0e1
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Clad version 1.2

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 1.2. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 1.2?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-5.0 to clang-16

Forward Mode

  • Add experimental support for forward vector mode.
  • Improve support of comma expressions.

Reverse Mode

  • Add pushforwards for std::floor and std::ceil.

Misc

  • Fill clad::array with 0s when assigned an empty brace-init list.
  • Improve documentation
  • Improve AD function interfaces with bitmasked options. For example:
    clad::differentiate<<clad::order::first, clad::opts::vector_mode>(f) will
    be equivalent to clad::differentiate<<1, clad::opts::vector_mode>(f) and
    will request the first order derivative of f in forward vector mode.

Fixed Bugs

218 395 521 523 541 566 573 582

Special Kudos

This release wouldn't have happened without the efforts of our contributors,
listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

Jonas Hahnfeld (27)
Vaibhav Thakkar (18)
Ris-Bali (5)
Garima Singh (3)
Vassil Vassilev (2)
Rishabh Bali (2)
vidushi (1)
petro.zarytskyi (1)
daemondzh (1)
ShounakDas101 (1)
Prajwal S N (1)
PetroZarytskyi (1)
Daemond (1)

Assets 2

Clad version 1.1

20 Jan 15:33
@vgvassilev vgvassilev
v1.1
0da45cd
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Clad version 1.1

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 1.1. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 1.1?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-5.0 to clang-15

Forward Mode

  • Fix a bug in pow pushforward

Reverse Mode

  • Improve for-loop conditions

Error Estimation

  • Improvements in error estimation of arrays
  • Add error estimation example

Fixed Bugs

430 474 505 506 507 514 515

Special Kudos

This release wouldn't have happened without the efforts of our contributors,
listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

Alexander Penev (5)
Vassil Vassilev (3)
vidushi (2)
ioanaif (2)
Vaibhav Thakkar (1)
Parth Arora (1)
Garima Singh (1)
Baidyanath Kundu (1)

Assets 2

Clad version 1.0

07 Oct 00:02
@vgvassilev vgvassilev
v1.0
ca8b09d
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Clad version 1.0

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 1.0. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 1.0?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-5.0 to clang-14

Forward Mode & Reverse Mode

  • Add support for pushforward- and pullback-style functions which allow to accumulate the results from the AD when required to correctly compute derivatives when arguments are passed by reference or pointers

Forward Mode

  • Add support for member variables in functors
  • Add basic support for virtual functions
  • Add support for reference arguments
  • Add basic support for AD of class types wrt scalars
  • Add support for member functions, pointers, overloaded operators, pointer arithmetic, nullptr, sizeof and pseudo objects,

Reverse Mode

  • Add support for while and do-while statements
  • Add initial support for AD of user-defined types allowing to differentiate scalar types wrt user-defined types

CUDA

  • Add forward mode support for basic CUDA programs. More can be seen here

Error Estimation

  • Developed an error estimation framework to perform AD-based error estimation. The new facility is available via the clad::estimate_error interface. See more in this demo

Misc

  • Developed user documentation available at clad.readthedocs.io
  • Developed developers documentation available at doxygen
  • Implement a fallback to numerical differentiation if Clad cannot differentiate a given function. To disable this behavior, please compile your programs with the -DCLAD_NO_NUM_DIFF.
  • Add benchmarking infrastructure based on google benchmark
  • Add integration with Enzyme via clad::gradient<clad::opts::use_enzyme>(...)

Fixed Bugs

28 281 353 368 386 387 393 440

Special Kudos

This release wouldn't have happened without the efforts of our contributors, listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

Parth Arora (65)
Vassil Vassilev (49)
Garima Singh (17)
Baidyanath Kundu (13)
Nirhar (12)
Ioana Ifrim (9)
Alexander Penev (4)
RohitRathore1 (1)
David (1)

Assets 2

Clad version 0.9

15 Aug 18:23
@vgvassilev vgvassilev
v0.9
9b24079
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Clad version 0.9

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 0.9. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 0.9?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-5.0 to clang-13-rc1

Forward Mode & Reverse Mode

  • Add support for differentiating functor-like objects.
  • Preserve the type qualifiers in the derived function.
  • Develop initial support for differentiation of CUDA code.
  • Improve the doxygen-style documentation.

Forward Mode

  • Add support for differentiating while and do-while statements
  • Add switch statement differentiation support.
  • Add array differentiation support.
  • Allow the user to specify an array index as a independent variable. For instance, clad::differentiate(f, "p[1]");.

Reverse Mode

  • Extend the array differentiation support. See more in the demo.

Build System

  • Add cmake variables to control the locations where find_package discovers LLVM and Clang: LLVM_CONFIG_EXTRA_PATH_HINTS and Clang_CONFIG_EXTRA_PATH_HINTS respectively.

Fixed Bugs

  • Fix memory leaks in clad::Tape.
  • Fix bug in the clad::Tape::size().
  • Fix codegen Error for class function differentiation
    (139)

Special Kudos

This release wouldn't have happened without the efforts of our contributors,
listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

  • Baidyanath Kundu (21)
  • Parth Arora (21)
  • Vassil Vassilev (3)
  • Garima Singh (3)
  • axmat (1)
  • Ioana Ifrim (1)
  • Alexander Penev (1)
Assets 2

Clad version 0.8

28 May 15:52
@vgvassilev vgvassilev
v0.8
fd8a6cd
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Clad version 0.8

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 0.8. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 0.8?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-5.0 to clang-12

Forward Mode & Reverse Mode

  • Implement #pragma clad ON/OFF/DEFAULT to control regions where clad is active
  • Support member functions with qualifiers in differentiation calls
  • Add getCode() interface for interactive use
  • Add support for using casts, * and & operators. For example:
    clad::differentiate(*&ptr_to_ptr, "...");

Misc

  • Add support for clang-11.1.0
  • Add support for clang-12

Fixed Bugs

  • Fixed several crashes in reverse mode.

Special Kudos

This release wouldn't have happened without the efforts of our contributors,
listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

  • Vassil Vassilev (14)
  • Baidyanath Kundu (10)
  • Garima Singh (7)
  • Alexander Penev (5)
  • Pratyush Das (3)
  • Parth Arora (2)
  • Ioana Ifrim (2)
  • Oksana Shadura (1)
  • Alex Efremov (1)
Assets 2

Clad version 0.7

20 Sep 06:11
@vgvassilev vgvassilev
v0.7
16c4724
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Clad version 0.7

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 0.7. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 0.7?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-5.0 to clang-10

Forward Mode & Reverse Mode

  • Implement hessian matrices via the clad::jacobian interface.

Fixed Bugs

  • Fixed the discovery of llvm in special builds with clang and libcxx.

Special Kudos

This release wouldn't have happened without the efforts of our contributors, listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

  • Roman Shakhov (3)
  • Philippe Canal (2)
  • Alexander Penev (2)
  • Vassil Vassilev (1)
Assets 2

Clad version 0.6

02 Apr 17:25
@vgvassilev vgvassilev
v0.6
64f95d4
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Clad version 0.6

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 0.6. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 0.6?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • Clad now works with clang-5.0, clang-6.0, clang-7.0, clang-8.0 and clang-9.0

Forward Mode & Reverse Mode

  • Implement hessian matrices via the clad::hessian interface.

Reverse Mode

  • Reduce the quadratic cloning complexity to linear.
  • Support variable reassignments pontentially depending on control flow.
  • Support operators +=, -=, *=, /=, ,, ++, --.
  • Allow assignments to array subscripts.
  • Support nested assignments in expressions a = b * ((c ? d : e) = f = g);
  • Enable differentiation of for-loops

Fixed Bugs

Issue 138

Special Kudos

This release wouldn't have happened without the efforts of our contributors, listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits)

  • Alexander Penev (19)
  • Vassil Vassilev (15)
  • Aleksandr Efremov (11)
  • Shakhov Roman (2)
  • Marco Foco (2)
  • Jack Qiu (1)
Assets 2

Clad version 0.5

07 Apr 14:10
@vgvassilev vgvassilev
v0.5
421c0ad
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Clad version 0.5

Introduction

This document contains the release notes for the automatic differentiation plugin for clang Clad, release 0.5. Clad is built on top of Clang and LLVM compiler infrastructure. Here we describe the status of Clad in some detail, including major improvements from the previous release and new feature work.

Note that if you are reading this file from a git checkout, this document applies to the next release, not the current one.

What's New in Clad 0.5?

Some of the major new features and improvements to Clad are listed here. Generic improvements to Clad as a whole or to its underlying infrastructure are described first.

External Dependencies

  • clang-5.0

Forward & Reverse Mode

  • Extend the way to specify a dependent variables. Consider function, double f(double x, double y, double z) {...}, clad::differentiate(f, "z") is equivalent to clad::differentiate(f, 2). clad::gradient(f, "x, y") differentiates with respect to x and y but not z. The gradient results are stored in a _result parameter in the same order as x and y were specified. Namely, the result of x is stored in _result[0] and the result of y in _result[1]. If we invert the arguments specified in the string to clad::gradient(f, "y, x") the results will be stored inversely.
  • Enable recursive differentiation.
  • Support single- and multi-dimensional arrays -- works for arrays with constant size like double A[] = {1, 2, 3};, double A[3]; or double A[1][2][3][4];

Reverse Mode

  • Support variable reassignments. For example,
double f(double x, double y) {
  double a = x * x;
  double b = y * y;
  double c = a + b;
  return c;
}

Misc

  • Add coverity static analyzer to the pull request builds.
  • Fix found by coverity issues.
  • Improved README.

Fixed Bugs

Issue 77
Issue 105

Special Kudos

This release wouldn't have happened without the efforts of our contributors,
listed in the form of Firstname Lastname (#contributions):

FirstName LastName (#commits):

  • Aleksandr Efremov(7)
  • Vassil Vassilev (6)
  • Oksana Shadura (2)
Assets 2