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ChangeLog
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2024-09-19 Greg Franks <[email protected]>
* documentation
- priorities start from zero and go up.
2024-04-30 Gregory Franks <[email protected]>
* lqiolib
- stop executing spex on any solver error.
2024-04-07 Gregory Franks <[email protected]>
* lqiolib
- queueing model updates.
- Add drop probability for open arrivals to schema.
* qnsolver
- add --no-bounds to suppress bounds output.
- change --plot-xxxx to --xxxx.
2024-01-09 Gregory Franks <[email protected]>
* lqiolib
- bug fixes for queueing solver.
2023-04-19 Greg Franks <[email protected]>
* lqns
- Fixes for replication=prune. Prune is the default now.
* srvndiff
- Change (+|-)f to output throughput bound.
- --verbose now outputs to stderr where differences are found.
2023-03-14 Greg Franks <[email protected]>
* lqiolib
- SPEX convergence fixes.
- Refactor control variable handling.
* petrisrvn
- bugfixes.
2023-01-27 Greg Franks <[email protected]>
* qnsolver
- jmva compatibility improvements.
* lqsim
- fix --trace
2023-01-12 Greg Franks <[email protected]>
* qnsolver
- Improvements for JMVA compatibility (especially with Multiservers)
- Export JMVA output for WhatIf runs.
2023-01-04 Gregory Franks <[email protected]>
* lqn2csv, lqn2ps, srvndiff
- Added --comment to print out the model comment.
- Added --solver-info to print out the solver used and its version.
* lqiolib
- Deleted the comment variable.
2022-12-21 Gregory Franks <[email protected]>
* lqiolib, qnsolver
- Added qnap2input.
* lqns, lqsim, srvndiff
- Mac M1 fixes.
2022-08-16 Greg Franks <[email protected]>
* lqiolib, lqns, petrisrvn:
- added #pragma save-marginal-probabilities to save the marginal
queue probabilities at multiserver stations.
2022-04-01 Greg Franks <[email protected]>
* NEWS: Bug fixes.
2022-02-04 Gregory Franks <[email protected]>
* NEWS: Bug fixes.
2022-01-02 Gregory Franks <[email protected]>
* lqiolib, lqns, qnsolver, lqn2xxx
- Bug fixes. See ChangeLog.
2021-12-10 Gregory Franks <[email protected]>
* lqns
- Added #pragma multiserver=zhou to use Siyu's approximation.
2021-09-13 Gregory Franks <[email protected]>
* lqiolib
- Added #pragma spex-comment to print comment when running SPEX.
2021-06-14 Gregory Franks <[email protected]>
* lqns
- New replication strategy (prune). Use #pragma replication=prune
* lqiolib
- New LQX function pramga("parameter").value outputs "value" for "parameter".
2021-03-16 Gregory Franks <[email protected]>
* lqns
- fixes for phase think times
* lqx
- Add unary + and -, remove negative numbers from lexical analyzer.
* qnsolver
- Generate gnuplot for throughput, residence time, response
time, number of customers and wait times. Will plot bounds for
two classes.
2021-02-24 Gregory Franks <[email protected]>
* lqiolib
- Change grammar for results to add plot(), remove -G<list> as option.
- Add bcmp_document, jmva_document, qnap2_document for plain BCMP models.
* libmva
- moved from lqns. Shared with qnsolver.
* qnsolver
- New. Generic BCMP model solver.
* lqn2ps
- partial conversion of lqn to bcmp models through #pragma bcmp,
#pragma prune
2020-09-27 Gregory Franks <[email protected]>
* NEWS: Refactored activity list handling
2020-08-22 Gregory Franks <[email protected]>
* NEWS: Bug fixes.
2020-08-18 Gregory Franks <[email protected]>
* lqns
- Add #pragma force-multiserver to lqn solver to force use of
multiserver for fixed rate servers.
2020-08-09 Gregory Franks <[email protected]>
* lqsim, lqiolib
- Move simulation parameters to pragmas.
2020-07-10 Gregory Franks <[email protected]>
* lqx, lqiolib, lqns, lqngen, lqn2ps, lqsim, ...
- Backport V6 (deprecate Cltn from lqns, replace with STL).
2015-12-01 Greg Franks <[email protected]>
* lqx, lqiolib, lqngen.
- Merge from V6 (trunk). Update spex for more functions and fixes
for control variables. Update lqngen to latest conversion algorithms.
2014-04-13 Greg Franks <[email protected]>
* lqiolib
- 'i' and 'o' changed for replication.
- Many enhancements to SPEX input.
* lqn2ps (V5_8)
- remove icon-slope. Add jlqndef style output.
2012-11-16 Gregory Franks <[email protected]>
* lqiolib
- underscore `_' changed to minus sign `-' for result attributes
so that they match the schema.
2012-05-10 Greg Franks <[email protected]>
* lqns/lqsim (V5_7)
- spex integration.
2012-03-05 Gregory Franks <[email protected]>
* lqns (V5_6)
- bug fixes.
2011-11-18 Greg Franks <[email protected]>
* lqn2ps (V5_5)
- Added -Oparseable.
* lqsim (V5_5)
- Added Read-Write Lock tasks.
* lqns (V5_5)
- Added --fast and --hwsw-layering.
2011-04-21 Greg Franks <[email protected]>
* lqns (V5_3)
- bug fixes.
2010-11-23 Gregory Franks <[email protected]>
* lqns (V5_2)
- Switched to getopt_long.
- Added --reload for lqx programs.
* lqsim (V5_2)
- Switched to getopt_long.
- Added --reload for lqx programs.
- Semaphores enhanced and fixed.
- lqx fully operational.
* srvndiff (V5_2)
- switched to getopt_long
* lqn2ps (V5_2)
- Switched to getopt_long.
- Added --reload for lqx programs.
2010-06-17 Gregory Franks <[email protected]>
* lqiolib (V5_0)
- New. Replacement for srvniolib. Adds lqx. Expressions from
the old grammar have been deleted. The -D stuff from lqn2ps has
been deleted.
2008-10-21 Greg Franks <[email protected]>
* lqsim (V4_2)
- Re-introduced the "bursty" reference task for lqsim. It uses
Pareto distributions.
2008-05-07 Greg Franks <[email protected]>
* srvniolib (V4_2)
- expressions can be used in place of integers and reals in input
specified using the traditional input grammer.
2008-04-23 Greg Franks <[email protected]>
* multisrvn (V4_1)
- Perl expression parser (and dc) replaced with internal
recurisive descent parser.
2007-07-21 Greg Franks <[email protected]>
* lqsim, lqns, lqn2ps, petrisrvn (V4_0)
- added quorum
2006-07-26 Greg Franks <[email protected]>
* lqsim (V3_11)
- Deleted -H. Histogramming is now specified in the input file.
- Histogram output is now saved in parseable output and xml files.
* srvniolib (V3_11)
- Added 'H (entry phase|task activity) start : end [buckets] [axis]'
to traditional input grammar for histogramming.
- Added 'D entry phase mean stddev skew kurtosis' to traditional
parseable output grammar.
- Added <service-time-distribution> to xml grammar for histogramming.
* lqn2ps (V3_11)
- Added '(+|-)g for controlling histogram output.
* xml (V3_11)
- Added <service-time-distribution> element to store histogram results.
2006-05-04 Greg Franks <[email protected]>
* lqsim (V3_10)
- Added -h(file|dir) to generate a comma separated value file for
service time distributions.
- Added -H[log,]alpha[,bins] -- log for log scale on x axis, and
bins for setting the number of bins.
2006-01-27 Greg Franks <[email protected]>
* srvn2eepic (V3_10)
- Change behaviour of (+|-)r: Set/Clear all result flags.
-r followed by +<something> will only print out results
for something.
2005-12-28 Greg Franks <[email protected]>
* lqn2ps (V3_10)
- -h (help) moved to -H.
-h is now used to print holding times for semaphore tasks.
* srvndiff (V3_10)
- -h (processor queueing times) moved to -b
-h is now used for semaphore holding times.
2005-11-26 greg franks <[email protected]>
* lqsim (V3_10)
- results for join delays now specify the first and last activity
in the join list, rather than the activity prior to the fork and
after the join.
- join delay for synchronization servers is now output.
* lqns (V3_10)
- results for join delays now specify the first and last activity
in the join list, rather than the activity prior to the fork and
after the join.
2005-11-17 Greg Franks <[email protected]>
* Schema (V1)
- forwarding element changed to EntryCallType. Forwarded calls
now can have fanin and fanout attributes. (needed for
replication).
2005-11-10 Greg Franks <[email protected]>
* Documentation
- User manual now added (though not complete).
- LQN input and output grammar files deleted.
* lqns (V3_9)
- 121 nor P2 Conway multiserver appoximation failure
- 125 cri P1 Infinite loop in Task::countCallers()
2005-09-26 greg franks <[email protected]>
* lqns (V3_9)
- Convergence test changed. Convergence is now based on the root
mean square of the change in utilization over all tasks and
processors.
* srvndiff (V3_9)
- Added (+i) to print the total number of iterations (though this
isn't terribly useful most of the time.
2005-09-15 Greg Franks <[email protected]>
* lqns (V3_8)
- Performance improvements to MVA solver for large systems with
multiple chains.
- Fixes to replication algorithms.
- Tasks with and-fork-join can now be replicated.
2005-09-11 Greg Franks <[email protected]>
* multisrvn (V3_8)
- The order of operands for results with phases and confidence
intervals has been switched from "entry", "level", "phase", to
"entry", "phase", "level".
2005-08-03 Greg Franks <[email protected]>
* lqns (V3_7)
- New algorithm for Markov_Phased_Conway_Multi_Server::wait()
Utilizations are much more stable.
* multisrvn (V3_7)
- Added `gnusplot' and `csv' to output options.
- Results for activities can now be plotted.
- Result catagories `jd' (join delay) and `ot' (overtaking) added.
- Result sub-catagories `ta', `taa', and `tae' added; `et' and
`tt' deleted.
2005-05-31 Greg Franks <[email protected]>
* srvndiff (V3_7)
- -L moved to -@. -L now takes a label like gnu diff. This is
useful for svn diff --diff-cmd srvdiff -x "opts"
* lqns (V3_7), lqsim.
- exit codes made common.
NORMAL_TERMINATION=0, INVALID_OUTPUT=1, INVALID_INPUT=2,
INVALID_ARGUMENT=4, FILEIO_ERROR=8, EXCEPTION_EXIT=255
error codes can be `or'ed.
2005-03-22 Greg Franks <[email protected]>
* lqn2ps (V3_6)
- -K moved to -k. -K now enables the "key".
* lqns (v3_6)
- 566 nor P1 Open arrivals to infinite server not processed correctly.
- 577 nor P1 Invalid results for open model server with multiple entries.
- 582 maj P1 Phase changes for entries with fork-join not computed cor...
- 452 nor P2 Phase utilization is wrong for fork3.in
2004-12-17 Greg Franks <[email protected]>
* lqn2ps (V3_5)
- Added .emf (windows enhanced meta file) format.
2004-11-15 Greg Franks <[email protected]>
* lqn2ps (V3_5)
- Added .sxd (open office) output format.
2004-08-30 Greg Franks <[email protected]>
* srvndiff (V3_4)
- '-S n.n' changed to '(+|-)S n.n'. +S reports those differences
that exceed n.n, -S reports the opposite.
2004-08-21 Greg Franks <[email protected]>
* lqsim (V3_4)
- Confidence interval calculation corrected. The simulator will
likely take longer to meet the exit criteria specified with -A.
2004-08-03 Greg Franks <[email protected]>
* lqns/parasrvn
- XML input and output.
2004-07-13 Greg Franks <[email protected]>
* doc
- Added the tutorial to the distribution (and configuration).
2004-04-21 Greg Franks <[email protected]>
* srvn2eepic (V3_2)
- (+|-)C is now -C<option> where option is result,layer,client
- -K<n> added which will slice out the calls for a particular client.
2004-03-22 Greg Franks <[email protected]>
* parasrvn (V3_1)
- This program has been renamed to lqsim.
* srvn2eepic (V3_1)
- This program has been renamed to lqn2ps.
- Added -Z<options>.
* MultiSRVN (V3_1)
- Added -Rskip to skip over pre-existing result files.
2004-02-07 Greg Franks <[email protected]>
* lqns/parasrvn/srvn2eepic/multisrvn (V3_0)
- these programs now all accept both the lqns input file format
and XML input. See lqn.xsd and lnq-core.xsd for the XML schema
definitions.
- Waiting times for processor scheduling are now reported on a
per-entry (or activity) basis instead of a per-slice basis.
- Activity loops are now generalized to more than one sub-list,
i.e.: a1 -> 2 * b1, 1.5 * b2, 0.2 * b3, c1;
* srvniolib/parasrvn (V3_0)
- probability maximum service time exceeded is now output to the
parseable output file.
* srvndiff (V3_0)
- the '-e' option (error format) is moved to '-E'.
- '-e' is now used for probability maximum service time exceeded.
2003-12-05 Greg Franks <[email protected]>
* spex/multisrvn (V2_23)
- .out files are now created by default once again.
* lqns (V2_23)
- Bugfixes.
2003-11-25 Greg Franks <[email protected]>
* spex (V2_22)
- now runs on windows NT. Now handles new output file format.
- spex runs NO LONGER generate .out files by default.
2003-11-07 Greg Franks <[email protected]>
* lqns
- replication fixed. Replication now working for activities
(except and-fork-join).
* MultiSRVN
- replication fixed for entries and activities.
* srvn2eepic
- replication is now displayed.
2003-10-19 Greg Franks <[email protected]>
* parasrvn (V2_19)
- Parasrvn now runs on Windows NT.
* lqns (Known problems)
- 1 Replication likely not working for activities
- 10 No algorithm for phased multiservers OPEN class.
- 11 Overtaking probabilities are calculated using CV=1
- 29 Solution of open models with "interlocking" is inaccurtate.
- 129 Invalid multiserver utilization for rolia multiserver (10...
2003-10-09 Greg Franks <[email protected]>
* multisrvn (V2_18)
- MultiSRVN is now compiled and built for Win32.
- MultiSRVN now uses Perl as it's expression evaluation engine.
This may mean changes to complicated expresssions -- in
particular the '^' (exponentiation) operator is now '**'.
2003-09-25 Greg Franks <[email protected]>
* lqns
- The ignoreopen=<nn> pragma has been removed and replaced with
stop-on-message-loss=(false|true). If set to true, the solver
will allow queues to grow to infinity (because the arrival rate
is too large for the server). If set to false, the solver will
stop.
* parasrvn
- The "halt-on-loss" pragma has been renamed to
"stop-on-message-loss" to match with lqns.
- If a queue overflows and stop-on-message-loss = false, the
corresponding result will be set to infinity. Queues are fixed
at 1024 items.
* srvniolib
- "inf" and "infinity" are reserved words in the output which
indicate an infinite result. The parseable output scanner will
pass "infinity" to applications such as srvndiff, multisrvn and
srvn2eepic.
2003-09-24 Greg Franks <[email protected]>
* multisrvn
- Open arrival results can now be extracted from MultiSRVN. Use:
.wt ( .e, <entry-name> );
* srvn2eepic
- The +C option will colour input files based on their layer
(provided that NO results are present). The default is to not
colourize input.
2003-09-10 Greg Franks <[email protected]>
* srvniolib
- A Queue length parameter (q <nn>) was added to the task
definition for yygram.y
- A drop probability field was added to the xxgram.y
* multisrvn
- '.tq' was added to the task information to vary the task queue
length.
- '.dp' and '.dpc' were added to the result catagories to extract
the message drop probabilities.
2003-09-08 Greg Franks <[email protected]>
* multisrvn
- Added '.tq' to vary task queue length.
- Added '.dp' and '.dpc' to extract message drop probabilities for
send-no-replies and open arrivals.
2003-09-04 Greg Franks <[email protected]>
* srvn2eepic
- The -l option (print layer number) has been moved to -Z.
- The -l option is now used to control the output of the message
loss probability for send-no-replies and open-arrivals.
2003-08-13 Greg Franks <[email protected]>
* srvndiff
- The -A option (print the absolute value of an error) was moved
to -M (magnitude).
- +A enables all comparison output except for variances. +AA
outputs variances too. -AA disables all output. Options are
processed from left to right, the last option processed takes
precedence.
* srvn2eepic
- Now compiles and runs on windows.
2003-07-20 greg franks <[email protected]>
* Lqns
- Join delays are now reported from the fork to the join.
- Multiserver fixes for large number of copies and missing chains.
* Parasrvn
- join delays are now reported from the fork to the join.
2003-07-06 ARTT <[email protected]>
* Lqns
- Added '-M' to NOT merge SNR and RNV waiting in .p file.
- Split RNV waiting from SNR waiting in output file.
* Parasrvn
- Added '-M' to NOT merge SNR and RNV waiting in .p file.
- Corrected task utilization values to account for time waiting at
processor.
- Split RNV waiting from SNR waiting in output file.
* Srvn2eepic
- Split RNV waiting from SNR waiting in output file
(-Oout/srvn2out).
- Handle split SNR/RNV waiting time output in .p file.
* MultiSRVN
- Handle split SNR/RNV waiting time output in .p file.
* srvndiff
- Handle split SNR/RNV waiting time output in .p file.
2003-06-24 Greg Franks <[email protected]>
* Lqns
- -zrename changed to -r
- Now handles asynchronous sends properly.
2003-03-21 Greg Franks <[email protected]>
* Lqns:
- Fixed class hierarchy in lqns for markov multiservers.
- overtaking with forwarding.
* srvn2eepic:
- New program.
* parasrvn:
- Peter Maly added service time distributions. See '-H' option.
$Id: ChangeLog 17304 2024-09-19 13:54:02Z greg $