- makes fileHandler calling resemble Time more closely
ENH: provide natural_sort less/greater functions
- more succinct than (compare < 0) or (compare > 0).
The corresponding wrappers for UList renamed as list_less, etc
but they were only used in unit tests
ENH: handle (-allRegions | -all-regions, ..) directly when retrieving args
- makes handling independent of aliasing order
STYLE: include <string_view> when including <string>
- the standard does not guarantee which headers (if any) actually
include string_view
Ideally wish to delay construction of the finite-area mesh until
updateCoeffs(), when it is actually needed.
This helps avoid difficult to trace errors and avoids inadvertent
parallel communication during construction from a dictionary.
However, lazy evaluation fails at the later stage while attempting
to load the corresponding initial fields, since the timeIndex has
already advanced.
Use the newly introduced regionModels::allowFaModels() switch
to locally enable or disable lazy evaluation as needed.
This allows selective disabling (eg, in post-processing utilities)
where loading the volume field should not activate the associated
regionFaModel and loading a finite-area mesh too (which may not
exist or be defined at that point).
- less typing than before and avoids relying on bash-specific behaviour
(fixes#3448)
ENH: add -region support for cleanFaMesh and cleanPolyMesh
CONFIG: add bash completion help for -area-region
ENH: general improvements for regionProperties
- robustness and failsafe for foamListRegions, regionProperties
- additional global model switches for regionModels
- further hide implementation (cxx ending)
STYLE: better distinction between code/templates for fileFormats/conversion
- for ensight and vtk, a large part of the code is header only.
Make this easier to identify
- add provisional support for selecting MPI_Gatherv
when merging fields in the surface writers.
Uses the 'gatherv' keyword [experimental]
BUG: gatherv/scatterv wrappers used the incorrect data type
- incorrectly checked against UPstream_basic_dataType trait instead of
UPstream_dataType, which resulted in a count mismatch for
user-defined types (eg, vector, tensor,...).
This was not visibly active bug, since previous internal uses of
gatherv were restricted to primitive types.
COMP: make UPstream dataType traits size(...) constexpr
- allows static asserts and/or compile-time selection
of code based on size(1)
- for a non-default mesh region, corresponding files:
system/finite-area/faOptions.<name>
system/finite-area/<name>/faSchemes, etc
if the entries within the faOptions dictionary happen to contain an
"area" entry and it conflicts with what is expected, it will be
rejected when creating the list of options, which helps avoid
unexpected behaviour and simplifies overall handling.
- unlike fvMesh and polyMesh, the faMesh mesh region name is passed
separately into constructors and functions. Thus need the same for
faMeshTools and faMeshSubset.
- ensure that an empty area name is treated like
polyMesh::defaultRegion.
The faMeshRegistry or other registries cannot have an empty name!
- extend the getAllRegionOptions and getAllFaRegionOptions handling
to use the supplied string literals as fallback values.
If regionProperties is missing (or empty) and the -regions/-area-regions
option is supplied with literal names, these will be used directly
instead of being used to filter the regionProperties.
STYLE: support both -all-regions and -allRegions
- in some shell models, only the mechanical properties (rho,E,nu) are
meaningful or just the basic thermal properties
(rho,Cp,kappa,emissivity).
Add a distinction when reading the dictionary entries
if those properties are mandatory and the thermo properties
(eg, molWt, Cp, etc) are optional or not.
This simplifies user input for thermal and vibration shell models.
- activeRequest() checks if given request is still active/pending
- finishedRequest() will now always call MPI_Test when running in
parallel instead of using a fast-path for skipping a null request.
This allows MPI a chance to progress operations even if that
particular request is not active.
- sameProcs() is a convenience wrapper for the following:
* check if indices resolve to the same underlying procs
* check the communicator procs against a list of procs
* to compare two lists of procs.
For example, check if the communicator corresponds to a
host-local communication:
if (UPstream::sameProcs(UPstream::commLocalNode(), myComm)) ...
STYLE: UPstream::Request gets an 'active()' method
- more MPI idiomatic than 'good'
- to avoid the many overload warnings on that platform,
may wish to use
FOAM_EXTRA_CXXFLAGS="-Wno-overloaded-virtual"
GIT: remove some old compilation stub files
- adjust the if/else-if/else-if cascade to have 'if constexpr (..)'
first and the *entire* alternate branch within the following 'else'.
This lets the compiler know that it can safely discarded the other
parts.
This change introduces a large amount of indentation change,
so use `--ignore-space-change` when inspecting.
COMP: reintroduce UList<T>() initialization in List [silence gcc]
COMP: use std::min() instead of direct check [silence gcc]
- gcc complains about possible strict-overflow for this:
```
if (count > len)
{
count = len; // The count truncated by the new length
}
```
Using `count = std::min(count, len);` avoids these (spurious)
warnings without adding a "diagnostic ignored" pragma
STYLE: pass std::pair<int,int> by copy [cheaper]
STYLE: make isdigit() and isspace() tests constexpr
- constexpr and C-locale only vs. the std counterparts
- extend time searching mechanisms to support searching in the case
global path: times(), findClosestTime(), findInstancePath()
- extend IOobject path() and objectPath() methods with
IOobjectOption::Layout variants
The changes are needed for addressing a global file structure
in parallel (#3431)
- add '<=' and '>=' operators that include rounding.
This means that typical code like the following would not have
considered any rounding:
instantList times = ...;
scalar val = ..;
// No rounding!
if (times[i].value() <= val) { ... }
// NEW: with rounding
if (times[i] <= val) { ... }
// old equivalent:
if (times[i].value() <= val || times[i].equal(val)) { ... }
ENH: provide a default stopInstance for fileOperation::findInstance
- makes it more consistent with Time::findInstance and more convenient
to use
STYLE: minor code style changes to TimePaths etc
- enables partial overwriting of content
- make default construct zero-sized, add reserve_exact() method
- improve sizing behaviour of OCharStream.
Since char buffers will approach the INT_MAX size more quickly than
other content, adapt the following strategy:
| Capacity range | Strategy |
|--------------------|------------------------------|
| 0 < N <= 0.25) | fast growth (2) |
| 0.25 < N <= 0.5) | slower growth (1.5) |
| 0.5 < N <= 0.75) | very slow growth (1.25) |
| 0.75 < N | already large - use max |
- improves usability of List as a general dynamic container as member
data without inheritance. Provide the same method for DynamicList
to enable more efficient use.
- additional string_view support for charList: useful when being used
as a character buffer
STYLE: improve allocation handling in List
- consolidate routines. Only assign size after allocation to ensure
that states are always consistent.
- make memory streams header-only (simpler)
- add sub-views and direct seek for span streams
New IOobject convenience methods
- IOobject::instanceValue() : return the IOobject instance as a scalar
value (or 0). Effectively the same as instant(io.instance()).value()
but with far less typing.
- IOobject::fileModificationChecking_masterOnly() : combines checks for
time-stamp and inotify variants
STYLE: minor adjustments for Enum
- can now create an empty entry and add/overwrite with tokens afterwards,
or copy/move construct from a list of tokens.
ENH: provided named token setter methods (disambiguates bool/char/label)
COMP: use 'if constexpr' for FlatOutput
DOC: more description for Field
- num_blocks(), test_set() as per boost
- broadcast(), reduceAnd(), reduceOr() to simplify parallel operations
- matrix-like output for PackedList::writeList()
BUG: Pstream::broadcastList() missing resize on sub-ranks
- latent bug since it was unused in any OpenFOAM code
- the snGradTransformDiag() is used in this type of code:
```
if constexpr (!is_rotational_vectorspace_v<Type>)
{
// Rotational-invariant type
return tmp<Field<Type>>::New(this->size(), pTraits<Type>::one);
}
else
{
return pTraits<Type>::one - snGradTransformDiag();
}
```
This implies that a rotational-invariant form should return 0
and not 1 like the pow(..., 0) does.
This is a backstop for any code that may inadvertently hit it,
but also allows the possibility of having integer indicator fields
without upsetting the compiler.
STYLE: doTransform() logic now uses is_rotational_vectorspace
- a special case of fixedValue with a value of zero:
* non-assignable
* no mapping needed
* value internal coeffs are zero
* value boundary coeffs are zero
- align some of the internal handling with each other and with
CompactListList
ENH: add readContentsSize to IOList, IOField etc.
- sometimes just need to know how many elements are stored on disk
without actually caring about the content. In those cases, can
frequently just get that information from the first label token
without needing to read anything else.
- the logic has been revised to allow list copying with nullptr entries.
These previously would have thrown an error.
- remove PtrList trimTrailingNull() method.
It was unused and would result in inconsistent addressing sizes.
FIX: inconsistent sizing used for DynamicList/PtrDynList clearStorage()
- older code did not reset addressable size prior to clearStorage()
or transfer(). Only a latent bug until memory pools are used.
- can be used in most places where checkType=false is used
ENH: add non-const get() method to HashPtrTable
- allows checking and modification (symmetric with PtrList methods)
STYLE: improve annotations in fileOperations headers
- previously handled stdin redirection as part of the run command but
(as Alexey Matveichev noted) this meant the command would actually
require an `eval` for this to work. Instead redirect before executing
the run command.
- can always use 'echo -e' (bash builtin) in mpirunDebug
CONFIG: add removal of mpirun.files/ to CleanFunctions
- leave mpirun.log/ files untouched, since they may still be useful
for later diagnosis
- provides some additional safety and precludes any recursive searching
ENH: support local directory handling in regionProperties
- allows alternative locations. Eg, for finite-area (#3419)
- since direct streaming of particles is only ever used internally and
never for disk I/O (which is collated by property), mixed precision
will never occur when constructing a particle from a stream.
Due to padding issues, the previous code would have been faulty anyhow.
Thus remove that code and replace with a simple sanity check.
- appears to hit single precision overflow with clang-15 in
face::center(), cellModel::center() and blockMesh createPoints().
The blockMesh might be particularly sensitive, since the points are
frequently defined in millimeters (scaled later), which results
in large intermediate summations.
Similar to primitiveMesh checks, use double precision for these
calculations.
ENH: support vector += and -= from compatible types
- eg, doubleVector += floatVector is now supported.
This streamlines some coding for mixed precision.
- To avoid lots of boilerplate, do not yet attempt to support general
operations such as `operator+(doubleVector, floatVector)`
until they become necessary.
- since pointConstraint is a tuple of (label, vector) not simply use
readRawLabel, readRawScalar since the tuple will also include
trailing padding and/or padding between its members
FIX: remove flawed handling of non-native precision for directionInfo
- packing of (label, vector) makes handling of non-native content
non-trivial (#3412). Content is only streamed, not written to disk,
so replace with a fatalCheck.
- local templates and 'if constexpr' to simplify logic and reduce
reliance on pre-processor defines.
FIX: readScalarOrDefault used scalarToken() not number() token
- will rarely (or never) be triggered, but was inconsistent
- as seen in #3201, using count() based on the ostringstream tellp
is not reliable since it is not updated with reset or copying.
STYLE: minor changes to string/char/span streams
- update docs to only mention string_view
- use auto return, without extra trailing 'decltype'
ENH: add IOstream size check helper methods
* checkNativeSizes() : test only
* fatalCheckNativeSizes() : an assert with FatalIOError
- find patch by name and return pointer to it. Similar to cfindZone()
ENH: robuster PatchFunction1 handling for uniformFixedValuePointPatchField
COMP: use 'if constexpr' with is_contiguous check
STYLE: consistent patch slicing parameters
- slice UList values, not List values
- base DimensionedField on DynamicField instead of Field to allow
convenient resizing
- initial infrastructure for unified GeometricField handling with
the boundaryEvaluate() method
Co-authored-by: <Mark.Olesen@keysight.com>
- regular or forced assignment from `zero` does not need dimension
checking:
Old: U = dimensionedVector(U.dimensions(), Zero);
New: U = Zero;
this eliminates a fair bit of clutter and simplifies new coding
without losing general dimension checking capabilities.
- reserve() did not set the addressable size to the current capacity
before resizing, which meant that the delete[] would not have the
true allocated size. Only affects memory-pool usage (#3381), which
is not yet integrated
ENH: remove unused DynamicList '*_unsafe()' methods
- can result in a mismatch between allocated and addressed sizes,
which becomes important for memory-pool usage.
Triggers function object to execute on the first time step.
Example usage:
minMax1
{
type fieldMinMax;
libs (fieldFunctionObjects);
writeControl onStart;
fields (".*");
}
Ref: EP2608
Correcting bug introduced when trying to keep the old communicator.
We do not need local communicator if all ranks of comm have
some faces. Not all ranks of the already local communicator.
- previous handling of forced inclusion of the master would taint the
logic about single vs multiple ranks.
- be fussier about avoing creation of a local communicator when not
needed.
STYLE: rename internal switch from localComm_ to useLocalComm_
- less confusing (it is a switch, not the communicator itself)
- setting the warnComm is useful for diagnosing multi-world issues but
triggers many false warnings when used in combination with AMI local
communicators.
COMP: unresolved pTraits<long int> for reductions on i586 systems
- now always just use int64_t instead of off_t and time_t
for master reductions.
Note that this is not the only place where the off_t definition
causes compilation issues (cf. fileOperation::broadcastCopy)
- in many cases the local communicator has the same communication
pattern for several timesteps so it can be reused instead of being
recreated. Avoids repeated MPI_Comm_free()/MPI_Comm_group() calls
- STYLE: eliminate bitSet intermediate when determining the sub-ranks
Calculates thrust, drag, torque and lift/drag/pressure coefficients
of single or multiple blades (eg, propeller, turbine blades)
This function object differs from the propellerInfo and forces
function objects in that all forces are calculated within the local
cylindrical coordinate system, which yields thrust and drag values
within the expected reference frame.
The output comprises:
- coefficients per radial bin
- area-weighted total coefficients
- integrated forces and torque
For convenient post-processing, the results are also written in a VTK
(.vtp) output format. All surface results are registered internally,
which makes them available for other function objects.
- originally only listed in functionObjectList, now also list the same
information under namespace functionObjects so it is more likely to
be found. Document the behaviour as a table to make it more
immediately visible than the text form.
- the indices(const wordRes& allow, const wordRes& deny) methods
were not defined consistently with the wordRes::filter handling.
wordRes::filter - allow/deny both empty:
= no filtering (ie, accept everything)
indices(allow,deny) - allow/deny both empty:
= return identity list (NEW behaviour)
= return empty list (OLD behaviour)
Consider the old behaviour a minor bug since the limited number of
callers had their own checks that avoided the poor behaviour.
Example of the inconsistent behaviour:
pbm.indices(wordRes(), wordRes({"non-existent"}))
--> identity list (old, new behaviour)
pbm.indices(wordRes(), wordRes())
--> identity list (new behaviour)
--> empty list (old behaviour)
- tests for list equality with different but compatible data types.
Eg, when comparing lists of int32 and int64 values.
STYLE: pass UList instead of List references into ListOps functors
- avoids intermediate allocation and re-assignment to self (#3374)
BUG: checkMesh (application) with questionable memory handling (#3374)
- move the contents of the new points instead of attempting to transfer
the entire list
COMP: replace mapDistribute specializations with if constexpr handling
- simplify future maintenance
- in messageStream::masterStream(int), it forwarded to stream()
without the communicator, which meant it would incorrectly check
UPstream::master(worldComm) and possibly not produce any output (or
block).
ENH: align MPI_Probe non-blocking handling with header description
- the header states that the commsType is non-blocking or not,
but the implementation actually checked for 'buffered' or not.
STYLE: fix some spacing and some documentation
- use functionObject writeInterval not timeInterval.
No change in behaviour since the missing writeInterval is treated
as '1' anyhow when using 'timeStep' for the writeControl
- consistent use of 'adjustable' vs 'adjustableRunTime'
- prefer '#eval{ vector(...) }' to calling '#eval' multiple times
ENH: improvements for GeometricBoundaryField evaluation
- early termination from evaluate_if() and evaluateCoupled().
- evaluateCoupled() now forwards to evaluate_if() and receives
additional handling for a 'void' parameter type.
BREAKING: extra template parameter for overset correctBoundaryCondition
- the true/false flag as a template parameter instead of as an
argument to use 'if constexpr' code
- encapsulates (foundObject && lookupPatchField) together,
similar to cfindObject
STYLE: remove unnecessary dummy parameters from lookupPatchField
- these were a workaround for a very old gcc bug and are no longer
needed. However, retain the (unneeded) second template parameter to
continue with not breaking existing old code - it has no overhead.
Signature:
void patchInternalField(UList<Type>& pfld) const;
// OLD: void patchInternalField(Field<Type>& pfld) const;
This change is necessary to allow collection into slices of a
larger list.
ENH: add {fa,fv}PatchField::patchNeighbourField(UList<Type>&)
- a retrieval version similar to patchInternalField(...)
STYLE: adjust AMI patch field private method names
- rename private method
patchNeighbourField(...) -> getNeighbourField(...)
to avoid access clashes with public methods
- remove undefined method neighbourSideField()
- the number of false positives has reduced, but in a few remaining
cases, the compiler cannot possibly "know" that the pointer stored
on the registry will outlive the scope of the method (for example)
gcc-13: suppressing these spurious warnings needs to be done at each
caller, which is simply not worth it, since later compiler versions
provide a cleaner solution.
gcc-14: the [[gnu::no_dangling]] attribute on the declaration
lets the compiler know the intent.
- additional FOAM_REAL_GNUC macro (defined in stdFoam.H) to define
the "real" gcc version and ignoring other compilers masquerading
as gcc.
COMP: rename MeshObject code to {cxx,txx}
- avoids issues on case-insensitive filesystems (#3316)
- the output parameter was previously a field and resized according to
the patch size. Now the output parameter must be pre-sized prior to
calling, which makes it possible to collect the patch internal
fields into slices of a larger list.
Signatures:
void patchInternalField
(
const UList<Type>& internalData,
UList<Type>& pfld // OLD: Field<Type>& pfld
) const;
void patchInternalField
(
const UList<Type>& internalData,
const labelUList& addressing,
UList<Type>& pfld // OLD: Field<Type>& pfld
) const;
This low-level change is not expected to affect any user code,
which would normally use a higher-level interface such as from
fvPatchField etc.
- can be used to pre-allocate space for internal+boundary field for
flat addressing (issue #3364).
For example:
DynamicField<Type> fld
(
std::pair<label,label>
(
GeoMesh::size(mesh),
GeoMesh::size(mesh)
+ (extra ? GeoMesh::boundary_size(mesh) : label(0))
)
);
ENH: base changes for GeometricField flags
- FieldBase 'localBoundaryConsistency_' and 'localBoundaryTolerance_'
for central handling of local boundary consistency checks.
- FieldBase 'unifiedGeometricField' for future extensions to GeometricField
- include "contiguous.H" in ListPolicy, which makes it available
whenever UList.H has been included
ENH: return plain List instead of shrinking the DynamicList
- constCast() convenience methods.
This simplies coding in places, especially in solvers
- inline some methods within headers, for better overview/maintenance
- only set DimensionedField default value on construct if not read
- storeOldTimes() does not require const_cast
- makes fvPatch consistent with faPatch etc and can simplify coding
ENH: handle sizing within extrapolateInternal() patch field methods
- reduces reliance on any sub-components
ENH: extend polyBoundaryMesh patch selectors
- indices_if() method with a predicate, or with a patch-type
behaves similarly to findPatchIDs(), but returns a sorted
labelList instead of a labelHashSet
- nFaces_if() method with a predicate return the number of boundary
faces for patches matching the given predicate.
The solverPerformanceDict gets larger due to the addition of a SolverPerformance
data per field at every outer iteration within the same main iteration/time
step.
However, the subsequent functionalities seem to use only the first and last
element of this dictionary per field; therefore, storing the interim values
was revealed to be redundant.
The change removes the interim values by transforming the `List` container
into the `Pair` container, and modifying the relevant algorithms.
- this can be used as an alternative to the (-world) multi-world
option. For example, for calling OpenFOAM applications with MUI
(https://github.com/MxUI/MUI)
- can use -mpi-no-comm-dup to suppress the initial communicator
duplication (to avoid potential deadlock with coupled processes).
This is partly related to comments in merge-request !735
ENH: simplify parsing/removal of local -world option
- can extract the world name in a single pass and also makes the
parsing robuster.
ENH: support regular MPI_Comm_split()
- the two-step method of Allgather + Comm_create_group may not be
expected by other applications (issue #3127) and that can lead to
deadlock, so also add in code for the regular MPI_Comm_split.
Does not support re-sorting keys!
FIX: faulty logic for splitting communicators
- only affected more recent develop branch
- useful to have std::reduce(), std::transform_reduce() available in
more places, so treat like <algorithm> and include in "stdFoam.H"
STYLE: add 'stricter' detection markers for cast of SubList to List etc.
STYLE: remove 'const' qualifier from Foam:one/Foam::zero (in Field)
- previously had special resizing treatment for the corner case when
the addressable size and the new capacity are identical. However,
that particular approach (to minimize copying) meant that the exact
deallocation size would likely be incorrect.
Having the correct deallocation size becomes more important with
alternative allocators.
Introduce resize_copy() protected function to limit the number
of elements copied during the resize.
ENH: provide DynamicList/DynamicField constructor with sizing
- allows fine-grained creation of a DynamicList/DynamicField with a
given size/capacity without an initial value.
COMP: typo in code for DynamicList::push_back() with IndirectList
- for reciprocal values, gMinMax() first and then calculate the
reciprocal, which avoids creating temporaries
STYLE: prefer MinMax to separate min/max accounting
COMP: namespace qualify min/max for deltaT, CourantNo, etc (#3348)
- these already existed for a single value, but now handle the full
field. This is more memory-friendly.
fld.clamp_min(lower); OLD: fld = max(fld, lower);
fld.clamp_max(upper); OLD: fld = min(fld, upper);
- central way to calculate reverse sizes for dynamic containers.
For example;
reserve_size<16, 2>(len, cap); // min-size=16, ratio=2
reserve_size<16, 3, 2>(len, cap); // min-size=16, ratio=1.5
replaces this type of code that was used in several places:
max(SizeMin, max(len, label(2*capacity_)));
The caller will have already checked (len < cap) before deciding
to make this call.
ENH: updates for DynamicList/DynamicField handling
- add reserve_exact() method, which is like reserve() but without any
extra sizing heuristics
- add DynamicField 'reuse' constructors, consistent with Field constructors
- sync allocated size before list destruction.
This may help when using aligned allocation strategies.
Using 'return List<T>(std::move(dynList))' for transfer of content
(with implicit shrinking) into a plain List, and leave copy elision
to do the rest. The implicit transfer (move construct List from
DynamicList) will normally invoke resize (new/delete and moving
elements).
With 'return dynList.shrink()', it will first invoke an internal
resize (new/delete and moving elements), followed by a copy
construct as a plain list.
STYLE: avoid implicit cast to 'const List&' in constructors
- provides an additional hook when linking OSspecific
CONFIG: apply quiet flag to wmkdepend
- suppresses "could not open FileName" warnings in quiet mode
FIX: reinstate selection of strict/non-strict deprecation
- accidentally removed in cf2b305b4f.
- extend with a _STRICTER version as well.
- provide separate float/double UList interfaces, which improves
flexibility (eg, with SPDP)
- sigFpe::fillNan_if() interface, for filling in when using alternative
memory allocators
- previous code used derived string iterators, but these would
be largely ignored anyhow since the underlying std::sub_match
str() method would just yields a std::string anyhow.
The SubStrings::str(size_t) method wasn't used in any code, so now
just use std::string iterators only.
This change simplfies overall handling, since it removes an unneeded
template dependency.
- /usr/bin/{gcc,g++} normally just symlinks to clang/clang++
and may have unknown default flags.
For a gcc toolchain, it would be better to use a homebrew
installation.
For these cases, the compiler will need to be specified with
version=.. in WM_COMPILE_CONTROL.
For example, with "version=14", to select gcc-14, g++-14 from the
homebrew installation.
- needs a slight hack for locating the FlexLexer.h header.
Added into src/OSspecific/POSIX similar to how it is handled
in src/OSspecific/MSwindows
CONFIG: add simple config/detection support for libumpire (Linux)
- new options to set components specified by homebrew.
Sets version as system, path from brew --prefix
-adios-brew, -adios2-brew, -boost-brew, -cgal-brew,
-fftw-brew, -kahip-brew, -metis-brew, -scotch-brew,
-gmp-brew, -mpfr-brew
-with-homebrew
Shortcut for selecting all the above (except gmp, mpfr)
* additional special treatment for GMP and MPFR.
If using non-system locations and not part of the ThirdParty
compiler, they can additionally be set in the CGAL config file:
-gmp-brew, -gmp-path
-mpfr-brew, -mpfr-path
- easier to create type-specific looping in templated code
STYLE: pass 'direction' and 'label' by value instead of reference
COMP: qualify Foam::min() in dense matrix classes
- compiler versions are now sufficient that only the C++ regex
interface is now being used. Can remove the old POSIX code
accordingly.
This change also removes any dependency on the SubStrings class to
manage the matching results.
ENH: remove OpenFOAM dependencies from MacOS addr2line utility
- The register keyword has been removed from c++17 but old flex
versions (version < 2.6.0) produce code including it, leading to
compilation errors when using clang (despite disabling the diagnostic).
gcc compiles but issues warnings.
- use '#define register' as empty as a workaround
STYLE: mark Pstream::scatterList() as deprecated
- this entry point is not directly used anywhere, only the
scatterList_algorithm backend is actually used.
The scatterList() routine is misnomer since it actually works like a
broadcast that skips overwriting the local rank, but only if used in
combination with the gatherList() manual implementation that uses
the same walk pattern.
- can be used to simplify some logic. For example,
if
(
(tok.read(is) && tok.isWord("FoamFile"))
&& (tok.read(is) && tok.isPunctuation(token::BEGIN_BLOCK))
)
...
vs
if
(
(is.good() && (is >> tok) && tok.isWord("FoamFile")) ...
&& (is.good() && (is >> tok) && tok.isPunctuation(token::BEGIN_BLOCK))
) ...
- compiler cannot decide between std::string and std::string_view
when creating from 'const char*' without also supplying the size,
so also supply a 'const char*' constructor.
ENH: additional string_view handling for ITstream and SubStrings
- the 'move' treatment performs a shallow copy but does not alter
the passed parameter. Identical semantics as per std::span.
ENH: constexpr for basic HashTable constructors
STYLE: 'Foam::zero' instead of 'const Foam::zero' for containers
- this is simply a compiler dispatch flag, so the additional 'const'
qualifier is unnecessary
- should ideally avoid SLList in most cases, since it is allocation
intensive and most places can easily use DynamicList or
CircularBuffer instead.
STYLE: use push_uniq instead of deprecated appendUniq method
- mark with a 'normal' deprecation instead of 'strict' deprecation
- the '-no-core' to limit coredumps to zero size
- the '-quick' option, which changes valgrind --leak-check from "full"
to "summary", and implies -no-core as well.
- enforce tcp libfabrics provider under valgrind since valgrind
does not otherwie work nicely with RMA
- fails with MPI_ARG_ERR.
Do not assume that any vendors actually support in-place handling
for MPI_Reduce(), regardless of what their documentation may claim.
- includes intrinsic MPI types, but no component aggregates since we
barely wish to use gatherv/scatterv (slow!) in the first place
and it makes no sense to recalculate the list of counts for
component aggregates which we will never use.
- for known data types (and component aggregates),
and intrisic reduction operation can now use
UPstream::mpiReduce(), UPstream::mpiAllReduce().
This change permits more operations to use MPI calls directly.
eg,
reduce(vec, sumOp<vector>);
now calls mpiAllReduce(..., op_sum) instead of point-to-point,
followed by a broadcast.
Similarly, when called as a simple reduction (not all-reduce)
Pstream::gather(vec, sumOp<vector>);
now calls mpiReduce(..., op_sum) instead of point-to-point
- extend use of MPI calls to list-wise reductions as well
- extend sumReduce() to bundle/unbundle vector-space types,
which lowers overall communication.
Before:
1) send/recv + binary op through a communication tree
2) broadcast
3) all-reduce of the count
Now:
1) pack into a local bundle
2) all-reduce
3) unpack the bundle
- support send/recv of basic types (int32, float, double, ...) in
addition to common OpenFOAM vectorspace types (floatVector,
doubleVector, ...)
This permits sending NUM items of the given types instead of sending
NUM sizeof() bytes.
For a vector (as double): 1 item instead of 24 items (3*8 bytes).
For a tensor (as double): 1 item instead of 72 items (9*8 bytes).
- simplify and rationalize some of the broadcast methods for more code
reuse.
The bottom level UPstream::broadcast is now always to/from "root=0".
This was previously passed as a default parameter, but never used
anything other than '0' in the code. Fixing it as '0' makes it
consistent with the 'top-down' logical for node-based broadcast.
- now distinguish between basic MPI types and user-defined types.
The new front-facing trait UPstream_basic_dataType unwinds components
and other types, but only for MPI fundamental types
(including any aliases)
- additional helper to combine a test for binary operator validity and
basic data type validity, which better expresses intent:
template<class BinaryOp, class T>
UPstream_data_opType;
- relax bit-wise operators to also accept signed integrals
and 'void' generic
- remove unused/unusable broadcast stream constructors/methods
- provide OPBstream::sends() and IPBstream::recvs() methods,
refactored from Pstream::broadcasts. These will always use
serializations, even for contiguous content.
- additional methods to support special handling of zero-sized lists.
For example,
if (UPstream::master(comm))
{
if (list.empty()) OPBstream::send(Foam::zero, comm);
else OPBstream::send(list, comm);
}
else
{
IPBstream is(comm);
if (is.remaining()) { is >> list; }
else { list.clear(); }
}
This avoids serialization of an empty list and the resulting double
broadcast (size + content), using instead a single broadcast (size).
STYLE: more consistency in communicator types (int vs label)
- returns the (start/size) range of the commLocalNode ranks in terms
of the (const) world communicator processors. This allows mapping
back into lists defined in terms of the world ranks.
- similar to what std::copy_n and std::fill_n would do, except with
templated loops. This allows compile-time transcribing with loop
unrolling. For example,
vector vec1 = ..., vec2 = ...;
FixedList<scalar, 6> values;
VectorSpaceOps<3>::copy_n(vec1.begin(), values.begin());
VectorSpaceOps<3>::copy_n(vec2.begin(), values.begin(3))
// do something with all of these values
STYLE: make start index of VectorSpaceOps optional
ENH: add clamped begin(int) versions to FixedList as per UList
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