From: Frank Singhoff <singhoff@beru.univ-brest.fr>
Subject: ANNOUNCE : Cheddar 1.2p0
Date: 18 Oct 2002 16:34:02 GMT
Date: 2002-10-18T16:34:02+00:00 [thread overview]
Message-ID: <aopd5q$60n$1@melon.univ-brest.fr> (raw)
The LIMI/EA2215 team is pleased to announce a new release of Cheddar,
a free real time scheduling
simulator. Cheddar is a scheduling framework designed for educational purpose
and for quick prototyping of real time scheduling algorithms. Cheddar
is composed of two independent parts : a graphical editor used to
describe a real time application/system, and a library which includes
classical real time scheduling/feasability algotithms/tests.
The current release is now 1-2p0.
Cheddar is distributed under the GNU GPL license.
Source code, binairies and documentation can be downloaded from :
http://beru.univ-brest.fr/~singhoff/cheddar
Cheddar is written in ADA with GtkADA for the graphical editor part.
Cheddar runs on Solaris, Linux and
win32 boxes and should run on every GNAT/GTKADA supported platforms
(see ACT web site for details).
With Cheddar, you can :
- Draw scheduling with classical real time schedulers
(Rate Monotonic, Deadline Monotonic,
schedulers, Least Laxity First and Earliest Deadline
First, POSIX.4 queueing policies).
- Check scheduling faisability with :
- Response times (with DM and RM).
- Processor utilization (with EDF, LLF, RM and DM).
- Scheduling for a given base period.
- Support for aperiodic and periodic tasks (with jitter
and deadline > period).
The new features are :
- A small framework is provided to design/test multiprocessor
schedulers. In the current
release, a scheduler with precedencies is built with this
framework
- SCHED_FIFO/SCHED_RR/SCHED_OTHERS Posix 4
scheduler
- Shared resources support (scheduling and
blocking time analysis).
Supported protocols : PIP, PCP.
- A small user's guide is now provided
- Tools to express and do simulations with task precedencies.
- Tindell end to end response time computation.
- Chetto and Blazewicz task parameter modification algorithms
to take care of task precedencies
- Tools to compute bounds on buffers shared
by periodic tasks.
- Many fixed bugs from the previous release
Work in progress :
- Write a user'guide of the framework
- Response time for EDF and LLF schedulers.
- SRP support.
- Message scheduling.
Feel free to contact us for help or bugs report.
Best Regards,
The LIMI/EA2215 team
next reply other threads:[~2002-10-18 16:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-18 16:34 Frank Singhoff [this message]
2002-10-18 19:15 ` ANNOUNCE : Cheddar 1.2p0 Jim Rogers
-- strict thread matches above, loose matches on Subject: below --
2002-10-19 10:27 Frank Singhoff
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