X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/dacbd9d8ffc6952f604bff54ec92212166b0dd1e..569bbeaf0cf00247d78bfb670b9f2d8c2a3f9ba8:/ChangeLog diff --git a/ChangeLog b/ChangeLog index e1cf90d434..094ab4dd7b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,196 @@ +SimGrid (3.0.2) unstable; urgency=low + + 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. [AL] + + 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. [AL] + + 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] + + 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. + + 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. + + -- + +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 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 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 Mon, 8 Aug 2005 17:58:47 -0700 + SimGrid (2.95) unstable; urgency=low XBT @@ -5,13 +198,17 @@ SimGrid (2.95) unstable; urgency=low * Cleanup in the xbt_config API; add configuration callbacks. [MQ] * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ] - MSG - * Implement MSG_get_msgload [MQ, AL] - 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 @@ -20,6 +217,8 @@ SimGrid (2.95) unstable; urgency=low 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 @@ -52,7 +251,7 @@ SimGrid (2.95) unstable; urgency=low * New module: bandwidth bandwidth measurement between arbitrary nodes running this module. [MQ] - -- + -- Da SimGrid team Thu, 30 Jun 2005 16:29:20 -0700 SimGrid (2.94) unstable; urgency=low