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Ran 12 Nov 2019 08:20AM UTC

Jobs 1

Files 86

Run time 13s

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Build # 2378

Build Type

Pull #597

travis-ci

Committed by

web-flow

Commit Message

CMake: Enable IPO/LTO

Interprocedural optimization (IPO) also known as link-time optimization (LTO)
is a great feature to reduce binary size and to improve code performance, e.g.
through extended inlining.

This feature is specifically useful for modern C++ code, which is also the
reason pybind11 enables it automatically for our python bindings as soon as
it is detected.

We now expose this feature for the rest of the library build as well and
auto-enable it when supported by the compiler.

Binary size before:
```
$ du -hs lib/*
1.0M    lib/libCatchMain.so
1.0M    lib/libCatchRunner.so
1.3M    lib/libopenPMD.ADIOS1.Parallel.so
1.1M    lib/libopenPMD.ADIOS1.Serial.so
2.2M    lib/libopenPMD.so
968K    lib/python3.6
```
and with IPO/LTO enabled (new default):
```
$ du -hs lib/*
876K    lib/libCatchMain.so
876K    lib/libCatchRunner.so
1.2M    lib/libopenPMD.ADIOS1.Parallel.so
1.1M    lib/libopenPMD.ADIOS1.Serial.so
1.5M    lib/libopenPMD.so
968K    lib/python3.6
```

Pull Request Pull Request #597: CMake: Enable IPO/LTO

Run Details

4936 of 5792 relevant lines covered (85.22%)

0.85 hits per line

Uncovered Existing Lines

Lines	Coverage	∆	File
1	80.52	-1.3%	include/openPMD/backend/Container.hpp
1	80.0	-5.0%	include/openPMD/IO/AbstractIOHandler.hpp
1	58.82	-5.88%	src/backend/BaseRecordComponent.cpp
1	38.89	-2.78%	src/Dataset.cpp
1	80.0	-6.67%	src/IO/AbstractIOHandlerHelper.cpp
1	85.93	0.76%	src/IO/ADIOS/ParallelADIOS1IOHandler.cpp
1	87.5	-12.5%	src/IO/DummyIOHandler.cpp
1	96.88	-0.52%	src/Iteration.cpp
1	82.03	-0.4%	src/Series.cpp
2	85.05	-0.96%	src/IO/ADIOS/CommonADIOS1IOHandler.cpp
4	82.99	-0.99%	src/IO/HDF5/HDF5IOHandler.cpp
4	87.39	-0.94%	src/IO/JSON/JSONIOHandlerImpl.cpp

Jobs

ID	Job ID	Ran	Files	Coverage
23	2378.23 (CXXSPEC="%gcc@7.4.0" USE_MPI=ON USE_PYTHON=ON USE_HDF5=ON USE_ADIOS1=ON USE_ADIOS2=OFF)	12 Nov 2019 08:20AM UTC	86	85.22	Travis Job 2378.23

openPMD / openPMD-api / 2378
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dev: 83%

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openPMD / openPMD-api / 2378 84% dev: 83%

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openPMD / openPMD-api / 2378
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dev: 83%

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