-SimGrid (2.93-cvs) NOT RELEASED YET; urgency=low
+SimGrid (3.1) unstable; urgency=low
+
+ SURF:
+ * complete rewrote of the KCCFLN05 workstation model. It is now an
+ extension of the classical CLM03 model that gracefully handles
+ failures. This is now the standard model for MSG and GRAS. It doesn't
+ handle parallel tasks yet though. [AL]
+ * Bug fix: Weights were not correctly set in the network part.
+ WARNING: This may have resulted in incorrect results with simulations
+ where there are more than one flow on a given link. [AL]
+
+ SURF, MSG, GRAS:
+ * After a (long ?) discussion on simgrid-devel, we have decided that the
+ convention we had on units was stupid. That is why it has been decided
+ to move from (MBits, MFlops, seconds) fo (Bits, Flops, seconds).
+ WARNING : This means that all previous platform files will not work as
+ such with this version! A warning is issued to ask users to update
+ their files. [AL]
+ A conversion script can be found in the contrib module of the CVS, under
+ the name contrib/platform_generation/surfxml_update.pl [MQ]
+
+ MSG,GRAS:
+ * Bug fix: Processes were started in reverse order, wrt deployment file.
+ WARNING: if your code relies on this bug, please fix it. [AL]
+ * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
+ being executed on two different locations. [AL]
+ * Bug fix: Failures are now better supported thanks to Derrick's tests
+ (there was many failure situations I hadn't thought of and that weren't
+ correctly handled). [AL]
+ * New function: MSG_host_is_avail indicates you whether a given m_host_t
+ is up or down.
+
+ GRAS:
+ * New! a real RPC mecanism, as it ought to be since too long. [MQ]
+ Exception occuring on server-side are propagated back to client (!).
+
+ API CHANGE: the callback changed their prototype. Change:
+ int my_handler(gras_socket_t expeditor, void *payload_data) {
+ to:
+ int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
+ gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
+ and you're set.
+ * New! function: gras_msg_handleall to deal with all messages arriving
+ within a given period.
+
+ AMOK:
+ * Bandwidth module:
+ - Do not force experiment sizes to be expressed in kb, or it becomes
+ impossible to mesure the latency this way (needs one byte-long tests)
+ WARNING: this changes the amok_bw_* function semantic. [MQ]
+ - Implements the link saturation stuff. [MQ]
+ * Host management module:
+ New! module factorizing code that we wrote over and over [MQ].
+
+ XBT:
+ * New module: cunit (my jUnit implementation in ansi C) [MQ]
+ - Test units are placed directly into the library code, they get extracted
+ automatically and placed into the src/testall binary.
+ - Convert most of the XBT tests to this system.
+ * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
+ * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
+ live in the same C code. This required to change a little bit the API
+ of surfxml parsing but shouldn't be an issue for end-users. [AL]
+ * New module: sparse graph structure with basic algorithms (this is work
+ in progress and the API is not considered to be frozen yet). [AL]
+ * Display more information on backtraces: source line & function names are
+ now displayed just like valgrind does (rely on addr2line tool) [MQ]
+ * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
+ * Reworked a little bit some #include statements to load only required
+ headers. Some user code that relied on SimGrid to include stdlib or
+ stdio may need to include it by themselves. [AL]
+ * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
+ g++. [AL]
+
+ --
+
+SimGrid (3.0.1) unstable; urgency=low
+
+ XBT:
+ * Unfortunately, I had missed 5 misnamed functions:
+ xbt_fifo_item_t xbt_fifo_newitem(void);
+ void xbt_fifo_freeitem(xbt_fifo_item_t);
+ xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
+ xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
+ xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
+ They're now deprecated. Please use their new versions:
+ xbt_fifo_item_t xbt_fifo_new_item(void);
+ void xbt_fifo_free_item(xbt_fifo_item_t);
+ xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
+ xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
+ xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
+ [AL]
+ * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
+ * Documentation: xbt_log module unmercifully reworked [MQ]
+ * Bugfix: there was a problem with the ending of contexts with
+ 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]
+
+ SURF:
+ * Bugfix: Do repport the error when two non-connected hosts try to
+ exchange data (Thanks to Flavien for stumbling into this one) [AL]
+
+ SURF:
+ * Add additionnal checkings on communications. Assert that two
+ communicating hosts are connected by a set of links... [AL]
+
+ MSG:
+ * Add additionnal checkings on channel values in communication [AL]
+ * New: MSG_task_get_source to see on which host a task was generated [HC]
+ * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
+ the number of tasks waiting to be received on channel and sent
+ by host. [AL]
+ * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
+ waits for the first task coming from a given host.. [AL]
+
+ GRAS new functionnalities: [MQ]
+ * Enhance the parsing macro to allow the size of multidimentional objects
+ to be given thru annotations.
+ * New example (and documentation): Matrix Multiplication a la RPC
+ (as when I was young!) and fix a bunch of bugs found on the way.
+
+ GRAS performance improvements: [MQ]
+ [DataDesc]
+ * Reduce the amount of cbps creation/destruction by making it static to
+ datadesc_send/recv() and using a (newly created) cbps_reset (based on
+ dynar_reset ())
+ [Virtu]
+ * Change libdata to a set so that we can search for stuff by ID (and thus
+ reduce the insane amount of dict lookups)
+
+ [Transport]
+ * Actually implement gras_datadesc_copy() so that we don't have to mimick
+ RL communication on top of SG since it's so uneffective.
+ It may also be used for inter-thread communication in RL, one day.
+ * Use gras_datadesc_copy() to exchange messages on top of SG
+ Allows to:
+ - improve message exchange performance on top of SG
+ - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
+ * Don't exchange on the network the size of the used part of buffer,
+ instead, specify the possible buffer size to read().
+ Advantages:
+ - reduces the amount of read/write calls (one pair per exchange)
+ - reduces the amount of exchanged data (the size)
+ - allows to retrieve all arrived data on receiver side, if we don't need
+ it right now (subsequent read will peek the buffer)
+ - allows the receiver to proceed with the begining of the stream before
+ everything is arrived
+ - make it possible to build an iov transport (using readv/writev)
+ Extra difficulty:
+ - take care of the data with non-stable storage (like stacked data),
+ and bufferize them.
+ * If possible, TCP send uses vector I/O (when writev() is here)
+ - Don't use it for receive since we send data sizes and data on the
+ same stream, so we wouldn't be able to chain large amount of chunks
+ before having to flush the stuff to read the size.
+ * Rework the transport plugin mecanism to simplify it and reduce the
+ amount of pointer dereferencement when searching for the right function
+ to use.
+
+ * I guess that now, we do almost as few system calls as possible while
+ doing as few data copy as possible.
+
+ To improve it further, we could try to send all the sizes first and then
+ all the data (to use iov on receiving size), but it's only a partial
+ solution: when you have 2 dimensional data, the sizes of the second
+ dimension is data of the first dimension, so you need 3 streams.
+
+ I'm not sure the potential performance gains justify the coding burden.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
+
+SimGrid (3.00) stable; urgency=low
+
+ SURF:
+ * New! Give the possibility to hijack the surf parser and thus bypass
+ MSG_create_environment and MSG_launch_application. Have a look at
+ examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
+
+ -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
+
+SimGrid (2.96) unstable; urgency=low
+
+ AKA SimGrid 3 rc 2.
+
+ XBT:
+ * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
+ This deprecates the xbt_error_t mecanisms.
+ It modifies (simplifies) all XBT and GRAS API.
+ MSG API keeps unchanged (exceptions raised by XBT are catched from
+ within MSG and masked with existing error handling facilities)
+
+ SURF:
+ * New! Add a FATPIPE model. [AL]
+ * New! Add a parallel task model. [AL]
+ * New! Add automatically a loopback interface (in the default
+ network model) if none was precised.
+
+ MSG
+ * Bugfix: MSG_process_resume now works with the current running process.
+ [AL]
+ * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
+ * Modification of MSG_task_get_compute_duration. Once a task has been
+ processed, the value returned by this function is now equal to 0. [AL]
+ * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
+ MSG_error_t MSG_task_cancel(m_task_t task). Add a state
+ (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
+ of a m_task. For now, MSG_task_cancel only works with computation
+ tasks. [AL]
+ * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
+ of the processor (in Mflop/s) regardless of the current load on the
+ machine. [AL]
+ * API Change: use proper naming convention for MSG_getClock and
+ MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
+ [AL]
+ * New! Add void MSG_task_set_priority(m_task_t task, double priority).
+ This function changes the priority of a computation task. This priority
+ doesn't affect the transfer rate. A priority of 2 will make a task
+ receive two times more cpu power than the other ones. This function
+ has been added to suit the needs of Nguyen The Loc and hasn't been that
+ much tested yet. So if it fails, please report it and send me your code.
+ [AL]
+ * API Change: removed all functions and types that were marked "deprecated"
+ since many months. Renamed MSG_global_init_args to MSG_global_init.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
+
+SimGrid (2.95) unstable; urgency=low
+
+ XBT
+ * Steal some nice code to GNU pth to fix context detection and usage [AL]
+ * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
+ * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
+
+ SURF
+ * Bugfix: Allow absolute paths for platform description files [MQ]
+ * Bugfix: do free the variables after use. Leads to drastic performance
+ improvement [AL]
+ * Implement max_duration (ie, timeouts) on resources [AL]
+
+ MSG
+ * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
+ case ;) [MQ]
+ * Implement MSG_channel_select_from() to help GRAS now that SURF provide
+ the needed support (timeouts) [AL]
+
+ GRAS (new features)
+ * Implement measurement sockets. You can now get the bandwidth between two
+ hosts thanks to AMOK (see below). [MQ]
+ * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
+ dynar over the network (yeah) [MQ]
+ * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
+ * simple/static token-ring example. [Alexandre Colucci and MQ]
+ * Use MSG_channel_select_from() and remove the *slow* hack we had to put
+ in place before [MQ]
+
+ GRAS (bug fixes)
+ * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
+ type parsing. "short" and "long" modifiers were also ignored; other
+ modifier (such as reference level) are still ignored. [MQ]
+ * Embeed the buffer size within the buffer itself on SG. [MQ]
+ That way, send() are atomic and cannot get intermixed anymore (at least
+ the ones which are less than 100k; bigger messages still have the issue)
+ * Array size pushed by the field, not by the field type (or each
+ and every long int will push stuff to the cbps) [MQ]
+ * use select() to sleep since it allows to portably sleep less than one
+ second. [MQ]
+
+ GRAS (minor cleanups)
+ * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
+ - Do clean .o files
+ - Compile with -g
+ * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
+ * type category 'ignored' killed as it was never used and were difficult
+ to transmit.
+ * whether a type can cycle or not is now a flag, leaving room for more
+ flags (as "ignored", if we feel the need one day ;)
+ * Rename raw sockets to measurement sockets since "raw" has another
+ meaning in networking community.
+
+ AMOK
+ * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
+ and offers features not belonging to GRAS but that most applications
+ need. One day, it may be a set of plugins loadable at runtime.
+ * New module: bandwidth
+ bandwidth measurement between arbitrary nodes running this module. [MQ]
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
+
+SimGrid (2.94) unstable; urgency=low
+
+ The first beta release of SimGrid 3 !
+
+ >>>Arnaud<<<
+ (documentation)
+ * Update the main page and the FAQ. Adding references to gforge.
+
+ (gras)
+ * Add a gras_os_getpid function.
+
+ (msg)
+ * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
+ * Extend the logs so that they also print PID, hostname, date, ... if
+ available.
+ * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
+ and kill the old version which were in testsuite/
+ * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
+ of PRINT_MESSAGE
+
+ (xbt)
+ * Add xbt_os_time(). As the rest of xbt/portability, this is not public
+ for users. Instead, each programming environment (GRAS, MSG,...) use it
+ when needed to provide such a feature to users.
+ Don't shortcut the mecanism or you will also shortcut the virtualization
+ you need on the simulator.
+
+ >>>Martin<<<
+ (infrastructure)
+ * Cleanups in configury with regard to compile optimization/warning flags.
+ Also add -fno-loop-optimize to any powerpc since it's the optimization
+ killing gcc (< 3.4.0).
+ * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
+ needed by MSG examples complications
+ * Borrow configury beautifications from PHP
+
+ (xbt)
+ * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
+ warning (thanks loris for stumbling into this one).
+ * Bugfix: stop loading private headers (gras_config.h) from the public
+ ones (xbt/swag.h).
+
+ (gras)
+ * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
+ * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
+ RL would imply a DNS resolver, which is *hard* to do in a portable way
+ (and therefore delayed).
+ * Implement a real timer mecanism and use it in timing macros. This allows
+ to avoid rounding errors and get a 0.000005 sec precision in timing
+ macros. While I was at it, various cleanups:
+ - allow to declare more than one timed section per file (fix a stupid bug)
+ - move some private declaration to the right place
+ - merge conditional execution and timing macros into emulation module
+ - document the module
+ - make sure the module cleanups its mess on gras_exit
+ * Documentation improvements:
+ - (new) how to compile applications using GRAS
+ - (new) emulation support (timing macros)
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
+
+SimGrid (2.93) unstable; urgency=low
Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
- Add MSG_task_get_name. The task names are mainly for debugging purpose,
but anyway.
- -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> NOT RELEASED YET
+ -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
SimGrid (2.92) unstable; urgency=low
