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Optimize Composition intermediate storage #540

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May 25, 2020
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@upsj upsj commented May 21, 2020

Only store the minimal amount of memory necessary for Composition. This is either the maximum sum of input and output dimension for all but the last intermediate operator, or the output dimension
of the last intermediate operator if there is only one operator.

@upsj upsj added is:enhancement An improvement of an existing feature. mod:core This is related to the core module. 1:ST:ready-for-review This PR is ready for review labels May 21, 2020
@upsj upsj added this to the Ginkgo 1.2.0 milestone May 21, 2020
@upsj upsj self-assigned this May 21, 2020
@upsj upsj force-pushed the optimize_composition branch 4 times, most recently from 94334b6 to 9f2402d Compare May 21, 2020 16:06
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codecov bot commented May 22, 2020

Codecov Report

Merging #540 into develop will increase coverage by 0.04%.
The diff coverage is 100.00%.

Impacted file tree graph

@@             Coverage Diff             @@
##           develop     #540      +/-   ##
===========================================
+ Coverage    89.10%   89.15%   +0.04%     
===========================================
  Files          276      276              
  Lines        17884    17950      +66     
===========================================
+ Hits         15936    16003      +67     
+ Misses        1948     1947       -1     
Impacted Files Coverage Δ
core/base/composition.cpp 100.00% <100.00%> (ø)
include/ginkgo/core/base/composition.hpp 92.00% <100.00%> (+2.71%) ⬆️
reference/test/base/composition.cpp 100.00% <100.00%> (ø)

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@pratikvn pratikvn left a comment

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LGTM!

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@thoasm thoasm left a comment

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LGTM!
A minor optimization nit and a small request for an additional test (which should have already been there).

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upsj and others added 3 commits May 25, 2020 12:38
only store the minimal amount of memory necessary
this is either the maximum sum of input and output dimension
for all but the last intermediate operator, or the output dimension
of the last intermediate operator if there is only one operator.
* remove unnecessary std::move(...)
* add test for single-element composition

Co-authored-by: Thomas Grützmacher <[email protected]>
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LGTM, but I would like to add an another test to check the storage reverse.

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@upsj upsj added 1:ST:ready-to-merge This PR is ready to merge. and removed 1:ST:ready-for-review This PR is ready for review labels May 25, 2020
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sonarcloud bot commented May 25, 2020

Kudos, SonarCloud Quality Gate passed!

Bug A 0 Bugs
Vulnerability A 0 Vulnerabilities (and Security Hotspot 0 Security Hotspots to review)
Code Smell A 0 Code Smells

100.0% 100.0% Coverage
0.0% 0.0% Duplication

@upsj upsj merged commit db2c566 into develop May 25, 2020
@upsj upsj deleted the optimize_composition branch May 25, 2020 15:17
@tcojean tcojean mentioned this pull request Jun 23, 2020
tcojean added a commit that referenced this pull request Jul 7, 2020
The Ginkgo team is proud to announce the new minor release of Ginkgo version
1.2.0. This release brings full HIP support to Ginkgo, new preconditioners
(ParILUT, ISAI), conversion between double and float for all LinOps, and many
more features and fixes.

Supported systems and requirements:
+ For all platforms, cmake 3.9+
+ Linux and MacOS
  + gcc: 5.3+, 6.3+, 7.3+, all versions after 8.1+
  + clang: 3.9+
  + Intel compiler: 2017+
  + Apple LLVM: 8.0+
  + CUDA module: CUDA 9.0+
  + HIP module: ROCm 2.8+
+ Windows
  + MinGW and CygWin: gcc 5.3+, 6.3+, 7.3+, all versions after 8.1+
  + Microsoft Visual Studio: VS 2017 15.7+
  + CUDA module: CUDA 9.0+, Microsoft Visual Studio
  + OpenMP module: MinGW or CygWin.


The current known issues can be found in the [known issues page](https://github.com/ginkgo-project/ginkgo/wiki/Known-Issues).


# Additions
Here are the main additions to the Ginkgo library. Other thematic additions are listed below.
+ Add full HIP support to Ginkgo [#344](#344), [#357](#357), [#384](#384), [#373](#373), [#391](#391), [#396](#396), [#395](#395), [#393](#393), [#404](#404), [#439](#439), [#443](#443), [#567](#567)
+ Add a new ISAI preconditioner [#489](#489), [#502](#502), [#512](#512), [#508](#508), [#520](#520)
+ Add support for ParILUT and ParICT factorization with ILU preconditioners [#400](#400)
+ Add a new BiCG solver [#438](#438)
+ Add a new permutation matrix format [#352](#352), [#469](#469)
+ Add CSR SpGEMM support [#386](#386), [#398](#398), [#418](#418), [#457](#457)
+ Add CSR SpGEAM support [#556](#556)
+ Make all solvers and preconditioners transposable [#535](#535)
+ Add CsrBuilder and CooBuilder for intrusive access to matrix arrays [#437](#437)
+ Add a standard-compliant allocator based on the Executors [#504](#504)
+ Support conversions for all LinOp between double and float [#521](#521)
+ Add a new boolean to the CUDA and HIP executors to control DeviceReset (default off) [#557](#557)
+ Add a relaxation factor to IR to represent Richardson Relaxation [#574](#574)
+ Add two new stopping criteria, for relative (to `norm(b)`) and absolute residual norm [#577](#577)

### Example additions
+ Templatize all examples to simplify changing the precision [#513](#513)
+ Add a new adaptive precision block-Jacobi example [#507](#507)
+ Add a new IR example [#522](#522)
+ Add a new Mixed Precision Iterative Refinement example [#525](#525)
+ Add a new example on iterative trisolves in ILU preconditioning [#526](#526), [#536](#536), [#550](#550)

### Compilation and library changes
+ Auto-detect compilation settings based on environment [#435](#435), [#537](#537)
+ Add SONAME to shared libraries [#524](#524)
+ Add clang-cuda support [#543](#543)

### Other additions
+ Add sorting, searching and merging kernels for GPUs [#403](#403), [#428](#428), [#417](#417), [#455](#455)
+ Add `gko::as` support for smart pointers [#493](#493)
+ Add setters and getters for criterion factories [#527](#527)
+ Add a new method to check whether a solver uses `x` as an initial guess [#531](#531)
+ Add contribution guidelines [#549](#549)

# Fixes
### Algorithms
+ Improve the classical CSR strategy's performance [#401](#401)
+ Improve the CSR automatical strategy [#407](#407), [#559](#559)
+ Memory, speed improvements to the ELL kernel [#411](#411)
+ Multiple improvements and fixes to ParILU [#419](#419), [#427](#427), [#429](#429), [#456](#456), [#544](#544)
+ Fix multiple issues with GMRES [#481](#481), [#523](#523), [#575](#575)
+ Optimize OpenMP matrix conversions [#505](#505)
+ Ensure the linearity of the ILU preconditioner [#506](#506)
+ Fix IR's use of the advanced apply [#522](#522)
+ Fix empty matrices conversions and add tests [#560](#560)

### Other core functionalities
+ Fix complex number support in our math header [#410](#410)
+ Fix CUDA compatibility of the main ginkgo header [#450](#450)
+ Fix isfinite issues [#465](#465)
+ Fix the Array::view memory leak and the array/view copy/move [#485](#485)
+ Fix typos preventing use of some interface functions [#496](#496)
+ Fix the `gko::dim` to abide to the C++ standard [#498](#498)
+ Simplify the executor copy interface [#516](#516)
+ Optimize intermediate storage for Composition [#540](#540)
+ Provide an initial guess for relevant Compositions [#561](#561)
+ Better management of nullptr as criterion [#562](#562)
+ Fix the norm calculations for complex support [#564](#564)

### CUDA and HIP specific
+ Use the return value of the atomic operations in our wrappers [#405](#405)
+ Improve the portability of warp lane masks [#422](#422)
+ Extract thread ID computation into a separate function [#464](#464)
+ Reorder kernel parameters for consistency [#474](#474)
+ Fix the use of `pragma unroll` in HIP [#492](#492)

### Other
+ Fix the Ginkgo CMake installation files [#414](#414), [#553](#553)
+ Fix the Windows compilation [#415](#415)
+ Always use demangled types in error messages [#434](#434), [#486](#486)
+ Add CUDA header dependency to appropriate tests [#452](#452)
+ Fix several sonarqube or compilation warnings [#453](#453), [#463](#463), [#532](#532), [#569](#569)
+ Add shuffle tests [#460](#460)
+ Fix MSVC C2398 error [#490](#490)
+ Fix missing interface tests in test install [#558](#558)

# Tools and ecosystem
### Benchmarks
+ Add better norm support in the benchmarks [#377](#377)
+ Add CUDA 10.1 generic SpMV support in benchmarks [#468](#468), [#473](#473)
+ Add sparse library ILU in benchmarks [#487](#487)
+ Add overhead benchmarking capacities [#501](#501)
+ Allow benchmarking from a matrix list file [#503](#503)
+ Fix benchmarking issue with JSON and non-finite numbers [#514](#514)
+ Fix benchmark logger crashers with OpenMP [#565](#565)

### CI related
+ Improvements to the CI setup with HIP compilation [#421](#421), [#466](#466)
+ Add MacOSX CI support [#470](#470), [#488](#488)
+ Add Windows CI support [#471](#471), [#488](#488), [#510](#510), [#566](#566)
+ Use sanitizers instead of valgrind [#476](#476)
+ Add automatic container generation and update facilities [#499](#499)
+ Fix the CI parallelism settings [#517](#517), [#538](#538), [#539](#539)
+ Make the codecov patch check informational [#519](#519)
+ Add support for LLVM sanitizers with improved thread sanitizer support [#578](#578)

### Test suite
+ Add an assertion for sparsity pattern equality [#416](#416)
+ Add core and reference multiprecision tests support [#448](#448)
+ Speed up GPU tests by avoiding device reset [#467](#467)
+ Change test matrix location string [#494](#494)

### Other
+ Add Ginkgo badges from our tools [#413](#413)
+ Update the `create_new_algorithm.sh` script [#420](#420)
+ Bump copyright and improve license management [#436](#436), [#433](#433)
+ Set clang-format minimum requirement [#441](#441), [#484](#484)
+ Update git-cmake-format [#446](#446), [#484](#484)
+ Disable the development tools by default [#442](#442)
+ Add a script for automatic header formatting [#447](#447)
+ Add GDB pretty printer for `gko::Array` [#509](#509)
+ Improve compilation speed [#533](#533)
+ Add editorconfig support [#546](#546)
+ Add a compile-time check for header self-sufficiency [#552](#552)


# Related PR: #583
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