-SimGrid (3.32.1) not released yet (target december 22)
+SimGrid (3.34.1) not released (Target: fall 2023)
+
+S4U:
+ - New class ActivitySet to ease wait_any()/test_any()/wait_all()
+ - Deprecate {Comm,Io,Exec}::{wait_any,wait_all,test_any} and friends
+ - New function NetZone::add_route(host1, host2, links) when you don't need gateways
+ Also add a variant with s4u::Link, when you don't want to specify the directions
+ on symmetric routes.
+ - Introduce a Mailbox::get_async() with no payload parameter. You can use the new
+ Comm::get_payload() once the communication is over to retrieve the payload.
+
+SMPI:
+ - New SMPI_app_instance_join(): wait for the completion of a started MPI instance
+ - MPI_UNIVERSE_SIZE now initialized to the total amount of hosts in the platform
+
+Python:
+ - Make the host_load plugin available from Python. See examples/python/plugin-host-load
+ - Mailbox::get_async() does not return a pair anymore. Use comm.get_payload() instead.
+ - Comm::waitall/waitany/testany() are gone. Please use ActivitySet() instead.
+ - Comm::waitallfor() is gone too. Its semantic was unclear on timeout anyway.
+ - Io::waitany() and waitanyfor() are gone. Please use ActivitySet() instead.
+
+C API:
+ - Introduce sg_activity_set_t and deprecate wait_all/wait_any/test_any for
+ Exec, Io and Comm.
+
+Plugins:
+ - Revamp the battery plugin: rewrite completely the API, for a better usability.
+ The examples were updated accordingly.
+ - Revamp of the Photovoltaic plugin: now called SolarPanel and complete rewrite of the API
+ - Add chiller plugin: enable the management of chillers consuming electrical energy
+ to compensate heat generated by hosts.
+
+----------------------------------------------------------------------------
+
+SimGrid (3.34) June 26. 2023
+
+ Save the planet, skip a release: 3.33 was due 6 months ago, so skip directly to 3.34.
General:
+ - SimGrid now requires a compiler with C++17 support for public headers too.
+ Sibling projects should upgrade their FindSimGrid.cmake
- Remove the MSG API: its EOL was scheduled for 2020.
- Remove the Java bindings: they were limited to the MSG interface.
- On Windows, you now need to install WSL2 as the native builds are now disabled.
It was not really working anyway.
- Support for 32bits architecture is not tested anymore on our CI infrastructure.
It may break in the future, but we think that nobody's using SimGrid on 32 bits.
- - Remove the surf module. It was replaced by the kernel/models module, and that
+ - Remove the surf module. It was replaced by the kernel/models module, and that
refactoring took almost 10 years to properly complete.
S4U:
Comm::set_payload_size() to change the size of the simulated data.
- New function: Engine::flatify_platform(), to get a fully detailed vision of the
configured platform.
+ - New Task abstraction: They are designed to represent dataflows, i.e, graphs of repeatable Activities.
+ See the examples under examples/cpp/task-* and the associated documentation.
+ - Full simDAG integration: Activity::start() actually starts only when all dependencies
+ are fulfilled. If it cannot be started right away, it will start as soon as it becomes
+ possible.
+ - Allow to set a concurrency limit on disks and hosts, as it was already the case for links.
+ - Rename Link::get_usage() to Link::get_load() for consistency with Host::
+ - Every signal now come with a static version that is invoked for every object of that class,
+ and an instance version that is invoked for this specific object only. For example,
+ s4u::Actor::on_suspend_cb() adds a callback that is invoked for the suspend of any actor while
+ s4u::Actor::on_this_suspend_cb() adds a callback for this specific actor only.
+ - Activity::on_suspended_cb() is renamed to Activity::on_suspend_cb(), and fired right before the suspend.
+ - Activity::on_resumed_cb() is renamed to Activity::on_resume_cb(), and fired right before the resume.
+ - Resource::on_state_change_cb() is renamed to Resource::on_onoff_cb() to distinguish from the
+ Activity::on_state_change_cb() that is related to the activity state machine, not on/off.
+ - Activity signals (veto, suspend, resume, completion) are now specialized by activity class.
+ That is, callbacks registered in Exec::on_suspend_cb will not be fired for Comms nor Ios.
+
+New S4U plugins:
+ - Battery: Enable the management of batteries on hosts.
+ See the examples under examples/cpp/battery-* and the documentation in the Plugins page.
+ - Photovoltaic: Enable the management of photovoltaic panels on hosts.
+ See the examples under examples/cpp/photovoltaic-* and the documentation in the Plugins page.
Kernel:
- - optimize an internal datastructure, leading to a potentially big
- performance gain (in particular with many detached comms)
+ - optimize an internal data structure (use a set instead of a list for ongoing activities),
+ leading to a potentially big performance gain, in particular with many detached comms.
MPI:
- New option smpi/barrier-collectives to add a barrier to some collectives
to detect dangerous code that /may/ work on some MPI implems.
+ - New function SMPI_app_instance_start() to easily start a MPI instance in your S4U simulation.
Models:
- Write the section of the manual about models, at least.
- - WiFi: the total capacity of a link depends on the amout of flows on that link.
+ - WiFi: the total capacity of a link depends on the amount of flows on that link.
- Use the nonlinear callback feature of LMM to reflect this.
- Calibration values can be changed to match different MCS configurations
- See the example teshsuite/models/wifi_usage_decay/wifi_usage_decay.cpp
with the default host model, as it should.
- Rename option "surf/precision" to "precision/timing" for clarity.
- Rename option "maxmin/precision" to "precision/work-amount" for clarity.
+ - New function: Engine::flatify_platform() to debug your platform.
sthread:
- Implement pthread_join in MC mode.
+ - Implement semaphore functions in sthread.
+ - Add an intricated way to verify the access to non-reentrant data structures
+ It requires code annotation, as shown in examples/sthread/stdobject/stdobject.cpp
+
+Model checking:
+ - Stateless model-checking is now usable on any system, including Mac OSX and ARM processors.
+ - The stateless aspects of the MC are now enabled by default in all SimGrid builds.
+ Liveness and stateful aspects are still controlled by the enabling_model-checking
+ configuration option.
+ - Introducing ODPOR and SDPOR reduction strategies
+ - Introducing guiding heuristics, trying to find bugs faster than DFS in reduced state space.
+ - Synchronize the MBI tests with upstream.
+ - Show the full actor backtraces when replaying a MC trace (with model-check/replay)
+ and the status of all actors on deadlocks in MC mode.
+
+XBT:
+ - simgrid::xbt::cmdline and simgrid::xbt::binary_name are gone.
+ Please use simgrid::s4u::Engine::get_cmdline() instead.
Documentation:
+ - New tutorial on simulating DAGs.
- New section in the user guide on the provided performance models.
- New section presenting some technical good practices for (potential) contributors.
- Add a section on errors and exceptions to the API documentation.
New plugin: the Chaos Monkey (killing actors at any time)
- Along with the new simgrid-monkey script, it tests whether your simulation
resists resource failures at any possible timestamp in your simulation.
- - It is mostly intended to test the simgrid core in extreme conditions,
+ - It is mostly intended to test the SimGrid core in extreme conditions,
but some users may find it interesting too.
Models:
Important user-visible changes:
- SimGrid now requires a compiler with C++14 support.
- Sibling projects should upgrade their FindSimgrid.cmake
+ Sibling projects should upgrade their FindSimGrid.cmake
- Surf precision default value is now 1e-9, instead of 1e-5. This was changed as
several users had difficulties to understand issues when using high bandwidth or
small latency events. The new value was already the default for SMPI and
- Network model 'NS3' was renamed into 'ns-3'.
Python:
- - Simgrid can now hopefully be installed with pip.
+ - SimGrid can now hopefully be installed with pip.
S4U:
- wait_any can now be used for asynchronous executions too.
- InfiniBand network model added: Based on the works of Jerome Vienne
http://mescal.imag.fr/membres/jean-marc.vincent/index.html/PhD/Vienne.pdf
- When smpi/display_timing is set, also display global simulation time and application times
- - Have smpirun, smpicc and friends display the simgrid git hash version on --git-version
+ - Have smpirun, smpicc and friends display the SimGrid git hash version on --git-version
* Collective communications
- SMP-aware algorithms are now dynamically handled. An internal communicator is created for each node, and an external one to handle communications between "leaders" of each node
- MVAPICH2 (1.9) collective algorithms selector: normal and SMP algorithms are handled, and selection logic is based on the one used on TACC's Stampede cluster (https://www.tacc.utexas.edu/stampede/).
Portability
* Create an installer for windows with nsis (amd64 and win32)
- - Add an hello world project to illustrate simgrid project creation.
- - Embed libpcre into the Simgrid installer to avoid
+ - Add an hello world project to illustrate SimGrid project creation.
+ - Embed libpcre into the SimGrid installer to avoid
its compilation burden
* The raw execution contexts should work on Apple now
* Port to Windows 64 bits
SimGrid-java (3.6) unstable; urgency=low
* Initial release.
- * Split of every thing from simgrid v3.5 into a separate package.
+ * Split of every thing from SimGrid v3.5 into a separate package.
-- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
* Greatly improved our cdash/ctest interactions
Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
* Added memory checking tests with valgrind; lot of memleak fixing.
- This may be the first release of simgrid with so few memory issues
+ This may be the first release of SimGrid with so few memory issues
* Added code coverage tests.
Our coverage is still improvable, but at least we see it on cdash.
Timing report of this version:
This version seem to be more than 5% faster than 3.3.1 (on linux
- 64bits with contextes). The gain is less than expected, we are
+ 64bits with contexts). The gain is less than expected, we are
investigating this for next release.
-- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
- Linux(debian)/amd64/context
- Linux(debian)/amd64/pthreads
These targets fail about 1/10 of times on gras/pmm, but we believe
- that this is because of the test, not because of simgrid.
+ that this is because of the test, not because of SimGrid.
amok/saturate_sg fails even more rarely, and the test may not be
the problem.
is really less memory-demanding, which should allow you to use
larger files in SimGrid [AL].
- * Inform valgrind about our contextes, so that it becomes usable
+ * Inform valgrind about our contexts, so that it becomes usable
with the default (and more effecient) version of SimGrid
[contributed by Sékou Diakite, many thanks]