Change the sign of go (or in other terms a12 and a21 matrix stencil
elements). This should make further optimization of matrix population
easier.
In addition hopefully improve the readability of the code by sacrifying
overloads for more verbose member names.
Memory management in plib is now alignment-aware. All allocations
respect c++11 alignas. Selected classes like parray and aligned_vector
also provide hints (__builtin_assume_aligned) to g++ and clang.
The alignment optimizations have little impact on the current use cases.
They only become effective on bigger data processing.
What has a measurable impact is memory pooling. This speeds up netlist
games like breakout and pong by about 5%.
Tested with linux, macosx and windows cross builds. All features are
disabled since I can not rule out they may temporarily break more exotic
builds.
Set USE_MEMPOOL to 1 to try this (max 5% performance increase).
For mingw, there is no alignment support. This triggers -Wattribute
errors which due to -Werror crash the build.
- convert macros to c++ code.
- order of device creation should not depend on std lib.
- some state saving cleanup.
- added support for clang-tidy to makefile.
- modifications triggered by clang-tidy-9.
Still some work ahead to separate interface from execution. This is a
preparation to switch to another sparse matrix format easily which may
be better suited for parallel processing.
On the linear algebra side there are some nice additions:
- Two additional sort modes: One tries to obtain a upper left identity
matrix, the other prefers a diagonal band matrix structure. Both deliver
slightly better performance than just sorting.
- Parallel execution analysis for Gaussian elimination and LU solve.
This determines which operations may be done independently.
All of this is not really useful right now. The matrix sizes are below
100 nets. I estimate that we at least need four times more so that CPU
parallel processing overhead pays off. For GPU, add another order. But
it's nice to have code which may scale.
This is an effort to separate netlist creation from netlist execution.
The primary target is to avoid that code which will only run during
execution is able to call setup code and thus create ugly hacks.
pstring:
- added support for UTF16LE to pstring.
- renamed size() to mem_t_size()
- renmaed len() to length()
- added size() == length()
- added empty()
- added simple compare()
pfmtlog:
- Simplified pfmtlog, added more c++
pdynlib:
- add a dynproc type to dynlib to wrap dynamic library calls.
various:
- fix two coverty scan issue.
- various clang warnings fixed.
(nw)
This removes all allocation code from pstring. const_iterator is
consequently now based on pstring::const_iterator.
Removed pstring_buffer. This was class wasn't a good idea.
Vas was right: This change did not impact runtime performance. Startup
performance (string intensive) increased. (nw)
- Fixed crashes on terminals without nets (i.e. connected to a rail)
- Reviewed "FIXMEs" and corrected some minor ones.
- Made m_cur_analog protected.
- Fixed pmf delegates to work with msvc.
- More optimizations to the solver code.
- Started work on a better signal pipeline in nlwav
- Only generate documentation for entities which are documented.
[Couriersud]
Device implementations (all cpp files in netlist/devices) now should
only include nl_base.h.
Netlist implementation sources should only include "net_lib.h".
Refactored netlist.h and netlist.cpp to avoid namespace congestion in
netlist.h.
Fixed VC2015 build. (nw)
- Remove virtual from some destructors and make them protected.
- Various cleanups.
- Small performance improvement.
- Fixed some inconsistencies.
- More c++ refactoring. (nw)
