-SimGrid (3.22) NOT RELEASED (Release Target: December 21. 2018, 22:23 UTC)
+----------------------------------------------------------------------------
-Java:
- - Process termination which was broken at version 3.21 has been repaired.
- - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
- - Hide the examples into examples/deprecated. New users should use Python.
+SimGrid (3.23.3) NOT RELEASED YET (v3.24 expected September 23. 7:50 UTC)
+
+S4U:
+ - Introduce a s4u::Disk interface to manage the newly introduced <disk>
+ tag. s4u::Disk is called to supplant s4u::Storage in a near future. It
+ thus becomes the default resource to execute I/O operations. Examples
+ and the file system plugin have been modified to use disks instead of
+ storage elements. Storage can still be used but is doomed to disappear.
+ Users are thus adviced to update their simulators accordingly.
+ - Barrier::wait returns SG_BARRIER_SERIAL_THREAD for (only) one actor
+ for consistency with pthread_barrier_wait()
+ - Host::get_englobing_zone() returns the englobing netzone
+ - Actor::on_destruction is now called in the destructor
+ Actor::on_termination new signal called when the actor terminates
+ its code.
+ - Global signals are now part of the Engine:
+ - on_platform_creation: after config settings, before the XML parsing
+ - on_platform_created: right after the XML parsing
+ - on_time_advance: each time the clock advances
+ - on_simulation_end: after simulation, before cleanups
+ - on_deadlock: as the name implies.
+ - C bindings:
+ - sg_{actor,host,link}_{data,data_set}() now all exist.
+ Use them to attach user data to the object and retrieve it.
+
+Models:
+ - Improved the usability of ns-3. Several bugs were ironed out.
+ - Introduce an experimental Wifi model. It sounds reasonable
+ according to the state of the art, but it still has to be properly
+ validated, at least against ns-3.
+
+MSG:
+ - convert a new set of functions to the S4U C interface and move the old MSG
+ versions to legacy (MSG_process_self*, MSG_process_{un}ref, ...)
+
+SMPI:
+ - Fortran bindings for DVFS have been removed.
+ - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init, MPI_Bsend,
+ MPI_Ibsend, MPI_Bsend_init, MPI_Buffer_attach, MPI_Buffer_detach
+ - SMPI can now be selected by cmake's find_module(MPI) with
+ MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
+ - Add support for MPI Errhandlers in Comm, File or Win. Default errhandler is now
+ MPI_ERRORS_ARE_FATAL, so codes which were sending warnings may start failing.
+
+Model-Checker:
+ - Use the included xxHash as an hash implem when C++14 is usable.
+ - Option model-checker/hash was removed. This is always activated now.
+ - New option smpi/buffering controls the MPI buffering in MC mode.
+ - MPI calls now MC_assert() that no MPI_ERR_* code is returned.
+ This is useful to check for MPI compliance.
+
+XBT:
+ - xbt_mutex_t and xbt_cond_t are now marked as deprecated, a new C interface
+ on S4U is already available to replace them by sg_mutex_t and sg_cond_t.
+
+XML:
+ - Introduce the <disk> tag as a replacement of the <storage>, <storage_type>,
+ and <mount> tags. The rationale is finish to decouple what should be handle
+ by SimGrid kernel (i.e., resources and activities) from plugins built in
+ user space (e.g., the file system plugin). This new tag currently accepts
+ only three attributes (id, read_bw, and write_bw). All the other information
+ that was declared with the storage related tags now has to be expressed as
+ properties. An example of platform using this new tag is available at
+ examples/platforms/hostsè_with_disks.xml
+
+Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
+ - FG#28: add sg_actor_self (and other wrappers on this_actor methods)
+ - FG#29 and FG#33: provide a new C API to mutexes and condition variables
+ - FG#30: convert MSG_process_{un}ref to sg_actor_{un}ref
+ - FG#31: per-actor data
+ - FG#34: SG_BARRIER_SERIAL_THREAD?
+ - FG#35: model-checker does not like buster-produced binaries
+ - FG!13: MC: complete workaround in the error msg seen on modern systems
+ - FG!15: execute_flops now logs compute
+ - FG!16: Fix the ns-3 bindings when several flows are simultaneously finishing
+ - FG!17: ns-3: unblock the right number of communications + others issues
+ - FG!18: Improving the performance of the ns-3 bindings
+ - GH#207: Error in the throughput of TCP transfer
+----------------------------------------------------------------------------
+
+SimGrid (3.23.2) July 8. 2019
+
+Documentation:
+ - Nicer introduction page.
+ - Migrate the "Deploy your application" page to the new doc.
+ - Move Java as a subtree of MSG.
+
+General:
+ - Rename simgrid::TimeoutError to simgrid::TimeoutException.
+
+XBT:
+ - Drop xbt_dynar_sort_strings().
+
+Bugs:
+ - Really fix FG#26: Turning off a link should raise NetworkFailureException
+ - FG#27: Wrong exception thrown to wait_any when link is turned off
+ - GH#328: Java: Canceling multiple tasks in a single vm/host
+
+----------------------------------------------------------------------------
+
+SimGrid (3.23) June 25. 2019
-Core:
- - Replace our own code to display a backtrace (that was forking addr2line)
+The Exotic Solstice Release.
+
+General:
+ - SunOS and Haiku OS support. Because exotic platforms are fun.
+ - Stop setting random seed with srand48() at initialization.
+ - Use addr2line as a fallback for stacktraces when backtrace is not available.
+ - Build option -Denable_documentation is now OFF by default.
+ - Network model 'NS3' was renamed into 'ns-3'.
+
+Python:
+ - Simgrid can now hopefully be installed with pip.
+
+S4U:
+ - wait_any can now be used for asynchronous executions too.
+
+XBT:
+ - New log appenders: stdout and stderr. Use stdout for xbt_help.
+ - Drop xbt_dict_dump.
+
+SMPI:
+ - SMPI now reports support of MPI3.1. This does not mean SMPI supports all MPI 3 calls, but it was already the case with 2.2
+ - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
+ - MPI interface is now const correct for input parameters
+ - MPI_Ireduce, MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter, MPI_Ireduce_scatter_block support
+ - Fortran bindings for async collectives.
+ - MPI_Comm_get_name, MPI_Comm_set_name, MPI_Count support.
+
+Model-checker:
+ - Remove option 'model-check/record': Paths are recorded in any cases now.
+ - Remove option 'model-check/sparse-checkpoint': Checkpoints are now
+ always sparse. That's an immense gain in memory, and can even be
+ faster because of cache effects. So there is no need to clutter the
+ code to allow the user to go for the unefficient mode.
+
+Network models:
+ - Remove the lagrange-based models (Reno/Reno2/Vegas). The regular
+ models proved to be more accurate than these old experiments.
+
+Fixed bugs (FG=FramaGit; GH=GitHub -- Please prefer framagit for new bugs)
+ - FG#1: Broken link in error messages
+ - FG#2: missing installation documentation
+ - FG#3: missing documentation in smpirun
+ - FG#6: Python bindings not available on PyPI
+ - FG#7: simple cmake call requires doxygen
+ - FG#8: make python bindings an optional dependency
+ - FG#10: Can not use MSG_process_set_data from SMPI any more
+ - FG#11: Auto-restart actors forget their on_exit behavior
+ - FG#12: -Denable_lto=OFF doesn't disable LTO
+ - FG#13: Installs unstripped file 'bin/graphicator'
+ - FG#14: Installs the empty directory 'doc/simgrid/html'
+ - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
+ - FG#17: Dead link in doc (pls_ns3)
+ - FG#20: 'tesh --help' should return 0
+ - FG#21: Documentation link on http://simgrid.org/ broken
+ - FG#22: Debian installation instruction are broken
+ - FG#26: Turning off a link should raise NetworkFailureException exceptions
+ - GH#133: Java: a process can run on a VM even if its host is off
+ - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
+ - GH#326: Valgrind-detected error for join() when energy plugin is activated
+
+----------------------------------------------------------------------------
+
+SimGrid (3.22) April 1. 2019
+
+The Easter Christmas Release (this one is somewhat late).
+
+Python:
+ - We are excited to introduce the SimGrid/S4U interface to your neighborhood
+ - Not complete yet: asynchronous activities (amongst others) are still missing
+ - Still ongoing: the interface may change in the future. We need more
+ testers! Please report any glitches.
+ - No new project using Java should start now. Please switch to Python.
+
+General:
+ - Some of the internal cleanups may lead to speed improvements:
+ - The hard limitation on the amount of simulated actors with
+ Java+Mac was removed. Now, the available memory is the only limit.
+ - Our refcounting was tidyied, leading to 10% speedups in some cases.
+ - We are still working on making our code robust to the actor kills
+ and hosts' churn. Things are improving, but it's not perfect yet.
+ - Replaced our own code to display a backtrace (that was forking addr2line)
with the Boost.Stacktrace library.
You won't see your backtraces without this optional dependency.
- Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
- Stop setting random seed with srand() at initialization.
+XML
+ - In <host> and <peer>, 'availability_file' is now 'speed_file'.
+ XML file version remains 4.2 since old files are still compatible.
+
+Java:
+ - Process termination which was broken at version 3.21 has been repaired.
+ - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
+ - Hide the examples into examples/deprecated. New users should use Python.
+
MSG:
- Drop MSG_process_create_from_stdfunc() from the API.
This C++ function was a pimple in the C API, made necessary at some
Now use (int,void*) callbacks instead of (void*,void*) ones.
The implementation was ways too messy to actually work, I guess.
+SMPI:
+ - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
+ too often and provide more accurate timings.
+ - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
+ - MPI_Alltoallw support
+ - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
+ MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
+ MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw.
+ - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
+ support
+ - Basic implementation of generalized requests (SMPI doesn't
+ allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
+
XBT:
- Drop sg_cmdline. Please use xbt_cmdline instead.
- Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
-fsplit-stack is the way to go nowadays when using threads.
- Drop the xbt_os_thread_t module (now unused)
- Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
+ - Drop xbt_str_join_array().
- Drop cunit, use Catch2 instead.
-XML
- - In <host> and <peer>, availability_file is now speed_file.
- XML file version remains 4.2 since old files are still compatible.
-
-Internal:
+Kernel:
- Many cleanups in the kernel::activity namespace. This was long
overdue, and shall open the path to many future endeavors.
Fixed bugs:
- - #132: Java : a process can not shut down its own host
+ - #132: Java: a process can not shut down its own host
+ - #220: S4U: detached send causes exception if sender terminates soon after sending
- #261: Document the parameters of parallel execution's constructor
- #300: [s4u] BarrierPtr is missing
- #314: SMPI args internal cleanup
- #316: Fix a bug related to the CPU utilization of multi-core VM
- #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
+ - #324: S4U: Attempting to create an actor on turned off host segfaults instead of throwing
- #325: Turning off a host has different behavior on sleeping actors and computing actors
----------------------------------------------------------------------------
the pthread backend. It caused some weird deadlock or behavior
depending on the pthread implementation. [AL]
* Bugfix: get the exceptions raised in the simulator repport where
- and why they come from when they are not catched in time [AL, MQ]
+ and why they come from when they are not caught in time [AL, MQ]
SURF:
* Bugfix: Do repport the error when two non-connected hosts try to
* New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
This deprecates the xbt_error_t mechanisms.
It modifies (simplifies) all XBT and GRAS API.
- MSG API keeps unchanged (exceptions raised by XBT are catched from
+ MSG API keeps unchanged (exceptions raised by XBT are caught from
within MSG and masked with existing error handling facilities)
SURF:
