* New: In Anabatic::AutoSegment::create(), allow the created segment to
be in any supported routing layer, and not only the bottom H & V.
Modifications impact the *two* overload of the function.
* Change: In Anabatic::NetBuilderHV::doRp_AutoContacts(), for punctual
METAL1, the protection has to be in METAL2. Bump the layer depth
to correctly use the updated verstion of AutoSegment::create().
* Change: In AnabaticEngine::checkPlacement(), for the Pin, check that
it's layer is in the routing gauge before anything else.
* New: In Katana::NegociateWindow::createTrackSegment(), if the track
nearest the segment axis (refTrack) do not exists, call a
breakpoint just before crashing.
* Bug: In CRL::MeasureSet::toStringHeaders(), check and issue a warning
if a measure label ends with a "." (dot).
* Change: In CRL::ToolEngine::getMeasure(), return the data measure
by pointer instead of by reference (easier to manipulate afterwards).
* New: In EtesianEngine::place(), add the placement runtime (under label
"placeT") to the measure set.
* New: In KatanaEngine::dumpMeasures(), add the Etesian runtime to the
set of measures.
WARNING: We are partially duplicating the informations pertaining
to the Alliance catalog (stored in the Catalog property)
directly into the Cell. This is needed for Flexlib which
is not using the Alliance loading mechanim. Ideally the
Catalog information should be moved into the Cell.
* New: In Cell, add new state flags Diode, PowerFeed (in addition to
Pad & Feed).
Export flags setter/getter to Python. For Flexlib usage.
* Change: In AllianceFramework::getInstancesCount(), correctly skip
Diode & Feeds based on Cell flags. Those flags must correctly
be set in the various Flexlib_fix.py scripts.
* Bug: In Track::repair(), when closing a same net gap, the amount the
"right" segment duSource must be shifted left was incorrectly
computed in some instances.
The previous calculation was assuming that the right edge of the
gap was at the exact same position than the source extension.
But when there is a non-preferred direction connected to it, this
is wrong. Now compute the delta accounting for a difference
between the right edge of the gap and the source extension.
* New: In AllianceFramework::getInstancesCount(), add a flag TerminalNetlist
to stop recursion on "terminal for netlist" instance level. This is to
avoid counting physical only or non-routed instances inside hard macros,
like SRAM blocks. This was leading to an overstimation of the "size"
in number of gates of the routing problem.
* Change: In KatanaEngine CTOR, call for the terminal for netlist number of
gates...
* New: In AnabaticEngine::printMeasures(), re-enable runtime & memory
footprint in measurements.
* Bug: In Anabatic::AutoSegment CTOR, correct computation of the initial
number of global segments. We were relying on the "global" flag,
which is *not* set at this stage. Now compare source and target
GCells.
* New: In KatanaEngine::runGlobalRouter(), store H-ovE & V-ovE in
measurements.
* New: In KatanaEngine CTOR, add the number of gates (flattened) to
the measurments.
* New: In KatanaEngine::runNegociate(), add the number of GCells to
the measurements.
* Change: In KatanaEngine::printCompletion(), compute the wirelengths
in either lambdas (symbolic) or *nanometers* (real).
* New: In cumulus/plugins.block.Block, add a setting to request the
Katana measurements dumping: "cfg.katana.dumpMeasures"
* Bug: In all CMakeLists.txt, it seems I was doing a worng use of
target_link_library(). No longer add dependencies to the C++ base
library but instead either to the Python associated module or
to the final binaries. This was inderectly causing the linking
problem related to Python (which was a misdirection).
* Bug: Typo in FindLibexecinfo.cmake, do not use FindLib[E]xecinfo.
* Change: In CRL/ccore/CMakeLists.txt, activate SKIP_AUTOMOC on
bison/flex generated files.
* Bug: In viewer/PyHApplication, do not delete the C++ object in
the Python destroy method.
* Bug: In Katana::Session::_addMoveEvent(), an error message is issued if
the segment is not *already* in a Track. But, it is not the case for
non-preferred Segment or reduced segment and it is valid. So suppress
the message in those cases.
* Bug: In KatanaEngine::annotateGlobalGraph(), the minimum track reservation
was not applied correctly. Instead of adding the *difference* between
the minimum and the current reservation, the minimum was simply added.
Leading to too high reservation. And loss of control about what we
were doing on the edges capacities...
Really stupid.
* New: Python/C++ API level:
* Write a new C++/template wrapper to get rid of boost::python
* The int & long Python type are now merged. So a C/C++ level,
it became "PyLong_X" (remove "PyInt_X") and at Python code
level, it became "int" (remove "long").
* Change: VLSISAPD finally defunct.
* Configuration is now integrated as a Hurricane component,
makes use of the new C++/template wrapper.
* vlsisapd is now defunct. Keep it in the source for now as
some remaining non essential code may have to be ported in
the future.
* Note: Python code (copy of the migration howto):
* New print function syntax print().
* Changed "dict.has_key(k)" for "k" in dict.
* Changed "except Exception, e" for "except Exception as e".
* The division "/" is now the floating point division, even if
both operand are integers. So 3/2 now gives 1.5 and no longer 1.
The integer division is now "//" : 1 = 3//2. So have to carefully
review the code to update. Most of the time we want to use "//".
We must never change to float for long that, in fact, represents
DbU (exposed as Python int type).
* execfile() must be replaced by exec(open("file").read()).
* iter().__next__() becomes iter(x).__next__().
* __getslice__() has been removed, integrated to __getitem__().
* The formating used for str(type(o)) has changed, so In Stratus,
have to update them ("<class 'MyClass'>" instead of "MyClass").
* the "types" module no longer supply values for default types
like str (types.StringType) or list (types.StringType).
Must use "isinstance()" where they were occuring.
* Remove the 'L' to indicate "long integer" (like "12L"), now
all Python integer are long.
* Change in bootstrap:
* Ported Coriolis builder (ccb) to Python3.
* Ported Coriolis socInstaller.py to Python3.
* Note: In PyQt4+Python3, QVariant no longer exists. Use None or
directly convert using the python syntax: bool(x), int(x), ...
By default, it is a string (str).
* Note: PyQt4 bindings & Python3 under SL7.
* In order to compile user's must upgrade to my own rebuild of
PyQt 4 & 5 bindings 4.19.21-1.el7.soc.
* Bug: In cumulus/plugins.block.htree.HTree.splitNet(), set the root
buffer of the H-Tree to the original signal (mainly: top clock).
Strangely, it was only done when working in full chip mode.
* Bug: In Track::repair(), consider the blockage net as any other, so
the metal filling works correctly (correct management of transitions
between blockage and non-blockage).
* Change: In Katana::PowerRails, in TerminalNetlist cells instances,
the ordinary nets components where generating obstacles, leading
to stupid cross blockages between the obstacle generated by the
component supporting the routing pad and the RP itself.
Now only take into account supplies and clocks (any layers)
and blockage layers.
Fix symbolic benches.
* Change: In Katana::Manipulator::moveUp(), the "reserve" value was
of 0.5 for pivot up and locals, now set it to 1.0, like in all
other cases ("reserve" is the number of free tracks that is
needed to allow the move up, in addition the the length being
moved up).
Fix routing convergence on the MIPS pipeline bench.
* Bug: In Track::repair(), when a same net gap has been found and closed,
we display a warning. We display the two segments fused, but when it's
the two first, we must not use index "i-1" (with i=0) ...
* Bug: In Katana::GlobalNetTable::getRootNet(), look for all fixed nets,
not only supplies and clocks. There may be some as now H-Trees are
not limited to clocks.
Should solve ao68000 short circuit cases.
* Change: In Track::addOverlapCost(), in some configuration, we can
have two overlapping short segments that can *both* be realigned.
But they prevent that because we account their shared length on
the track.
So now, in realign mode only, do not account same-net shared
length if the segment length is less than *two perpandicular pitches*.
This helps the antenna protection by making the diode connected
directly to METAL2 long stripes, and not keeping them isolated.
* Change: In Katana::Track::addOverlapCost(), if an overlaping segment
is owned by the net *and* is the one we want to insert, do not take
it into account in the shared length.
This case never occured before we introduced the "realign" stage,
as a to be inserted segment, was, by definition, not already
inserted in a track. But in the realign stage, it is. So we should
not account it when computing the insertion cost in the track it
is already in. This was preventing short segments (less than a
pitch) to be correctly re-aligned.
And, as a side effect, preventing the antenna/diodes to work as
intended (diode connected at METAL3 layer while the antenna occur
at METAL2 layer).
* Change: In SegmentFsm::_slackenLocal(), in the Minimize state, when
the segment is fully blocked *and* has *lot* of candidate tracks,
that means that it is up against a *massive* blockage (i.e. a macro
block). In that case, try to move up (to go *over* it).
Previous behavior was to go straight to Inimplemented state.
* Change: In SegmentFsm::_slackenGlobal(), manage fully blocked
global segments. But finally, this configuration didn't arise.
* Change: In Manipulator::moveUp(), restore the management of the
AllowLocalMoveUp flag, to be able to move up local segments
(needed by SegmentFsm::_slackenLocal()).
* New: In Track::repair(), the gapset was used to *close* same-net gaps
is now alos used to restore minimal spacing between different nets.
Seems to be not fully working yet.
* In KatanaEngine:
- Former situation:
Each RoutingEvent did store the routing stage it was in. And it
was misnamed "mode".
- New organization:
The routing stage is stored in KatanaEngine itself. It can be
accessed through a proxy in Session.
* Change: In DataNegociate::update(), when in Realign stage and computing
non-preferred perpnadicular routing *do not* expand of one pitch
outside the RoutingPad range.
* Bug: In TrackSegment::getFreeInterval(), if, for whatever reason,
a discrepency happens between the TrackSegment and the Track,
that is the _track fields point to a *wrong* Track. Then the
index lookup will fail (Track::npos), so return an all-span
interval instead of trying to expand it and crash (out of
bound).
* New: In Track::repair(), short gaps between segments of the same
nets where occuring and being not detected. This was causing
DRC minimal distance violations. Now, fuse the segments when
they are too close. Done by extenting the duSource of the
rightmost one to the leftlost one.
Create ancillary class GapSet to manage the gaps of the
various segment of the same net.
When a segment is placed only once (which is to say it is nerver ripped
up) it can sometimes end-up in a non-optimal place. We now add a stage
in Katana where each segment is "re-placed" in order to maximise
alignment on it's neighbor. This is a new stage added to both
RoutingEvent and NegociateWidow. Segments are replaced *only* in free
space, they will not ripup *other* segments, except for their own
perpandiculars. We exclude from re-placement globals (unlikely to move)
and segment that have reduced perpandiculars which *must* not be elongated
and potentially raised.
Add a new katana setting to enable/disable the realign stage (enabled
by default:
- "katana.runRealignStage" ( = True )
We use the segments extensions (dxTarget & dyTarget) to enlarge if
needed the segments. This new implementation is completely at
Anabatic level and should not be seen (i.e. managed) at Katana level.
* Change: In AutoHorizontal & AutoVertical, change the semantic of
getSourceU() and getTargetU(). formerly they where the end
position of the segment (with extension included), now they
gives the position of the anchor contacts, that is the axis
of the perpandiculars.
* New: AutoSegment::getLength() is still a proxy toward the
Segment::getLength() which returns the length of segment with
dxSource & dxTarget. We introduce a getAnchoredlength()
which returns the length between the centers of the S/T
anchors. That is axis to axis.
This is this length which is now used througout Anabatic.
* New: In AutoSegment::_extentionCaps, add a fourth item to hold
the segment minimal length (to respect minimal area given
the wire width).
* New: In AutoSegment::getExtensionCap(), if the segment has
a non-zero S/T extension, returns it instead of the S/T
contact extension *if it is greated*. The check of the
extension can be disabled by the Flag::NoSegExt flag.
* Change: In AutoSegment::isMiddleStack(), security check on
the presence of source and targets. More accurate detection
of perpandicular in "same layer" with a non-zero length,
So the area is OK, even with a short segment.
* New: AutoSegment::expandToMinLength(), check if a segment is
under the minimal length and expand it if need be by playing
with the dxTarget & dxSource. Tag minimal segments with the
AutoSegment::SegAtMinArea flag. Also try to keep the segment
*inside* it's former (supposedly wider) interval.
* New: AutoSegment::unexpandToMinLength(), to be called on a
formerly minimal sized segment which as grown up. Reset
it's S/T extensions to zero and unset the flag SegAtMinArea.
* Change: In AutoHorizontal::updateOrient(), when the extension
are non-zero, also swap them if needed, to keep the exact
footprint of the segment.
* New: In AutoSegment::revalidate(), check that the segment
respect the minimal length (area), and expand it if needed.
Conversely, if the segment has grown up from a minimal
length state, reset it's extensions to zero.
* Change: In Anabatic::Session::revalidate(), invalidateds
segments are now sorted in such a way that the "middle stack"
ones are revalidateds last. Not recall 100% why...
* New: In Katana::TrackCost, add a computation of the free interval
length we are into (if any). Not used yet, keep it for future
use.
* Change: In KatanaEngine::finalizeLayout(), remove the call to
segments minimum area protection. It is now obsoleted by the
new implementation in Anabatic.
* Change: In Track::check(), call the minimum size/area checker
Track::checkMinArea().
* Change: In NetBuilder::getPositions(), ordering of source/target points
is now integrated to this function instead of left to the caller.
In case of real (non-symbolic) routing gauge, skrink the ends of
half the wire width.
* Change: In NetBuilderHV::doRp_AutoContacts(), in case of non-METAL1
RoutingPad, put the axis of the segment on the nearest track.
Issue a warning if we have to shift, as it may be a potential
source of routing problems.
* New: Anabatic::Session::getNearestTrackaAxis(), proxy to compute
track positions, knowing the design abutment box.
* Bug: In Katana::PreProcess::propagateCagedConstraints(), when
looking at all the slave components anchoreds on a RoutingPad,
if they do not have an AutoSegment lookup, skip them instead
of crashing.
* New: In cumulus/plugins.block.Block.placeMacro(), new method to
place a macro cell, partly delegating to the Macro block wrapper.
Must be called *after* both core and corona abutment boxes have
been set.
Adjust the macro block position so the METAL2 & METAL3 pins
are exactly on pitch regarding the full routing grid. The reference
being the corona.
A shift, less than one pitch may be applied, leading in some
cases of overlapping abutment boxes. But this shouldn't be a
problem.
The macro to place is designated through a path of instances
names, rooted at the *core* (not the corona). Meaning that the
head instance must be one of the core.
* Change: In cumulus/plugins.chip.Chip, the complete chip I/O pads
plus corona and core placement is moved out from doPnR() and
put into doChipFloorplan(). It is now mandatory to call this
method *before* doPnR().
Those methods are now cleanly separated so we can perform macro
block placement or any inner core floorplaning operations between
them.
* Change: In cumulus/plugins.macro.Macro, instead of creating large
pads for the I/O pins so whatever the block position, they will
be under a grid point, create a simple dogleg to put them on
grid.
To ensure that they are "on grid", the block pins must be
in METAL2 (horizontal E/W) or METAL3 (vertical N/S) and the block
is assumed to be placed so the bottom left corner of it's
abutment box is exactly on one grid point for M2/M3.
This should be done by Block.placeMacro().
* Bug: In PowerRailsPlanes::Rail::doLayout(), in case of non-blockage but
fixed segments (that is, power lines), expand the segment box of one
picth to put blockage on too close neigboring tracks.
* Change: In Manipulator::avoidBlockage(), more accurate computation of
the blocked area for pushing aside the terminal & turn of the non-pref
segment.
NOTE: To myself, one more bug uncovered in the Track segments management.
This is really too complex, must find time to re-think and simplify
the whole thing.
* New: In Katana::NegociateWidow::createTrackSegment(), detect offgrid
fixed segments and insert them into tracks directly (as *wide* segment
of two tracks).
* New: In Katana::TrackSegment::create() factory method, check for offgrid
fixed segment and use a TrackSegmentWide (of 2 tracks) for them.
* New: In Katana::TrackSegmentWide CTOR, check if they are used in the
context of an offgrid segment and in that case set the track span
to two. We *do not* manage yet the case for both *wide* and *offgrid*
segments.
* Change: In Katana::PowerRails::Rails::doLayout(), do not expand blockage
rectangles over their real size. Add the guard only for real layers
segments.
* Bug: In Katana::PreProcess::propagateCagedConstraints(), when looking
for the first track index, check for out of bound value (npos).
* Bug: In Katana::Track::addOverlapCost(), before using the overlap
segment indexes, check if we are not in a free hole (get the free
interval from center).
* Bug: In Katana::Track::expandFreeInterval(), the interval was badly
computed if it was included inside segments of another (same) net.
under the fixed segment, we were using the axis *of the segment*,
but if it is very wide, this is completly off.
Now use the axis of the *track* to get the right GCells impacteds.
* Bug: In KatanaEngine::annotateGlobalGraph(), overlapping blockages or
fixed segments where taken into account as separate ones. This was
making the edge capacity reservation too high. Creating false
zero-capacity edges at some points.
Didn't show up until now because we did not have overlaps.
* Change: In EtesianEngine::globalPlace(), disable the call to
antennaProtect(). First reason is that, after all, Coloquinte
do not handle so well the resizing of the cells "on the fly",
it overspill the boundaries sometimes. Second reason is that
as we cannot know the routing tree at this stage, we will not
be able to choose the correct points for diode insertions.
We only have a Steiner tree wich may not be the same as a
density driven Dijkstra.
* Change: In Etesian::Area, the Occurrence to the Instances where
not stored in a uniform way. Some where starting from the
placed sub-block, some where starting from the top level
(corona), making their processing (and remembering it) tricky.
Now, they are all expressed from the top cell (corona).
The coordinate system is now systematically the one of the
top block (*not* the block).
Create various overloaded functions EtesianEngine::toCell()
and EtesianEngine::toBlock() to ease Occurrence & coordinate
translations.
* New: In Etesian::Slice::createDiodeUnder(), add a X position hint.
Search is done by going through the whole slice range and
minimizing the distance to the hint. If it starts to be too
slow, we may optimize.
* Bug: In EtesianEngine::toColoquinte(), the placement of the top
level external pins was not taken into account (this at last
explain their weird positioning).
* New: AnabaticEngine::antennaProtect(), new algorithm to avoid
antenna effect. This step must be done *after* global routing
and *before* detailed routing. This way we have access to the
real routing and can mend it (along with the netlist) to
insert diodes at the rigth points.
From the global routing we build clusters (DiodeCluster) of
RoutingPads connected through a set of wire whose total length
is below the antenna effect threshold. Long wires connecting the
clusters are also tagged because we need to put a diode between
them and the first RoutingPad of the cluster. This is to avoid
a long METAL2 wire connecting to the RoutingPad before the diode is
connected through METAL3 (in case of misalignment).
This protection is not even enough. For *very long* wires, we
needs to put *more* than one diode (this is to be implemented).
Jean-Paul Chaput
Myrtle Shah
Las Safin
Luke Kenneth Casson Leighton