-SimGrid (3.33.1) 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.
+ - Implement recursive mutexes. Simply pass true to the constructor to get one.
+ - Introduce a new MessageQueue abstraction and associated Mess simulated object.
+ The behavior of a MessageQueue is similar to that of a Mailbox, but intended for
+ control messages that do not incur any simulated cost. Information is automagically
+ transported over thin air between producer and consumer. See examples/cpp/mess-wait
+
+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
+
+sthread:
+ - Implement recursive pthreads.
+ - Many bug fixes.
+
+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.
+
+Kernel:
+ - optimize an internal data structure (replace boost::circular_buffer_space_optimized by
+ std::deque to store pending and unmatched Comms in Mailboxes). It is actually a revert
+ to what was used a few years back. The boost structure had a lower memory footprint than
+ deques, but it appeared that their "space_optimized" character was generating a huge lot
+ of refcount changes on the stored Comms.
+
+----------------------------------------------------------------------------
+
+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.
- 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 fullfiled. If it cannot be started right away, it will start as soon as it becomes
+ 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::
See the examples under examples/cpp/photovoltaic-* and the documentation in the Plugins page.
Kernel:
- - optimize an internal datastructure (use a set instead of a list for ongoing activities),
+ - 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:
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
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 controled by the enabling_model-checking
+ 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 bactraces when replaying a MC trace (with model-check/replay)
+ - 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:
