X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/b517efb81e1b42b498967f5ca1286265c16b07c5..b5bf8909a2aaa14f4f36d149d0e234374d5754b1:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 7e7e71bb8b..7579bfa7fc 100644 --- a/ChangeLog +++ b/ChangeLog @@ -2,34 +2,109 @@ SimGrid (3.3.4) unstable; urgency=low The "Desktop Grid needs love too" release. + Models improvements: + * Major speedup in the maxmin system solving by using lazy evaluation + Instead of solving completely the maxmin system at each iteration, + only invalidate (and recompute) the modified parts. + This new feature is enabled in default models but you can try to + turn it on with "--cfg:maxmin-selective-update=1" for other models. + * Cas01 IMproved as default CPU model + This CPU model is the same Cas01 model, but it uses the + maxmin-selective-update flag and a heap structure to manage + actions on SURF kernel. + It reduces the complexity to find the next action to finish and, + consequently, it's faster than the old Cas01. + This is the new default CPU model (Cas01). + * Rename the old Cas01 model to Cas01_fullupdate + Keep the old cpu model Cas01 with the new name of Cas01_fullupdate. + Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model. + * CpuTI (CPU Trace Integration) + A new CPU model whose objective is simulate faster when using + availability trace files. + Instead of using a full featured, over engineered maxmin system for + CPU modeling, this model does the pre-integration of traces files + to calculate the amount of CPU power available, and so, executes + faster than the old CPU models. + Use "--cfg=cpu_model:CpuTI" to change to this CPU model. * Use LV08 as default network model since it gives better accuracy for small messages and shouldn't change things for big ones. Use --cfg=network_model:CM02 to get the previous behavior. + + + ****************************************** + *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES* + ****************************************** + * The new CPU model may changes simulations! + The point is that events occurring at the exact same timestamp + are not scheduled in the same order with the old and new + version. This may be enough to completely change the execution + of simulations in some cases. + * The new network model will change simulations! + This new model is more realistic than the previous one, so you + should consider redoing your old experiments with this model. + Sorry for the inconvenience. + + MSG: + * Port of MSG's mailbox on top of SIMIX network + The put/get mechanism was greatly simplified thanks to the new SIMIX module. + + SIMIX: + * New SIMIX network module + It provides a rendez-vous point (aka mailbox) based send/recv API to perform + synchronous communication. + + SimDag: + * new function SD_daxload(char*) to load a DAX file + (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator) + * Introduce typed tasks. Specify its kind and cost at creation. + At scheduling, just give where it should be placed, and the cost + for each involved resource is automatically computed. + Existing constructors so far (more to come of course): + - SD_task_create_comm_e2e() for end-to-end communication + - SD_task_create_comp_seq() for sequential computation + Use SD_task_schedulev() / SD_task_schedulel() to schedule them. + * new function SD_task_dump() for debuging display + * new function SD_task_dotty(task,FILE*) writing to file the info + about the task in dotty format + * SD_task_dependency_exists() can now cope with having one of its + arguments NULL. If so, it tests whether the other argument has any + dependency. + * Add getters on list of preceding/following tasks: + SD_task_get_parents(task) and SD_task_get_children(task) + * Add getters on amount of workstations and list: + SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t) + * Add getter on task kind: SD_task_get_kind(task) + * Update the start_time and finish_time of tasks on completion/failure + * Bugfix: Remove task from state swags when destroyed + + GRAS: + * New function: void gras_cpu_burn(double flops) -- a simple CPU burner + + XBT: + * New function: xbt_dynar_dopar(dynar,fun) to map a function over the + dynar with one separate thread per value of the dynar. + + Bug fixes: + * GTNetS wrappers should now be usable again (and betterly tested too) * Fix a major regression from 3.2 where the timeout provided to MSG_task_put_with_timeout() was used as absolute time before which the comm should be done. + * Start to fix the tag. + - Internal links should be good now (beside of the loopback, which + use the private link instead) + - paths to the external world is still rather broken + - the tag is just broken. Actually that's brain-dead. + We need sth like + to make it less stupid + ** Check your platform with teshsuite/simdag/platforms/flatifier ** * Fix a source-level compatibility glitch from 3.2: after defining MSG_USE_DEPRECATED, you can use the old name MSG_task_put_with_time_out() for MSG_task_put_with_timeout() * Allow to compile from the SVN with automake 1.11 - * Invalidate maxmin system partially - This feature optimizes the maxmin solution through partial invalidation of maxmin system. - Use "--cfg:maxmin-selective-update=1" to enable it. - * Cas01_IM (Cas01 IMproved) - This CPU model is the same Cas01 model, but it uses the maxmin-selective-update flag - and a heap structure to manage actions on SURF kernel. It reduces the complexity to - find the next action to finish and, consequently, it's faster than the old Cas01. - Use "--cfg=cpu_model:Cas01_IM" to change to this CPU model. - * CpuTI (CPU Trace Integration) - A new CPU model whose objective is simulate faster when using availability trace files. - It does the pre-integration of traces files to calculate the amount of CPU power available, - and so, executes faster than the old CPU models. - Use "--cfg=cpu_model:CpuTI" to change to this CPU model. * Fix some problems when using the "start_time" tag in deployment XMLs. -- Da SimGrid team - SimGrid (3.3.3) stable; urgency=low The "Need for Speed" release.