- \b compound: Host model that is automatically chosen if
you change the network and CPU models
- \b ptask_L07: Host model somehow similar to Cas01+CM02 but
- allowing parallel tasks
+ allowing "parallel tasks", that are intended to model the moldable
+ tasks of the grid scheduling literature.
\subsection options_generic_plugin Plugins
may speedup the simulation by discarding very small actions, at the
price of a reduced numerical precision.
-\subsection options_model_nthreads Parallel threads for model updates
+\subsection options_concurrency_limit Concurrency limit
-By default, Surf computes the analytical models sequentially to share their
-resources and update their actions. It is possible to run them in parallel,
-using the \b surf/nthreads item (default value: 1). If you use a
-negative or null value, the amount of available cores is automatically
-detected and used instead.
-
-Depending on the workload of the models and their complexity, you may get a
-speedup or a slowdown because of the synchronization costs of threads.
+The maximum number of variables in a system can be tuned through
+the \b maxmin/concurrency_limit item (default value: 100). Setting a higher value can lift some limitations, such as the number of concurrent processes running on a single host.
\subsection options_model_network Configuring the Network model
in NS3. The only valid values (enforced on the SimGrid side) are
'NewReno' or 'Reno' or 'Tahoe'.
+\subsection options_model_storage Configuring the Storage model
+
+\subsubsection option_model_storage_maxfd Maximum amount of file descriptors per host
+
+Each host maintains a fixed-size array of its file descriptors. You
+can change its size (1024 by default) through the \b
+storage/max_file_descriptors item to either enlarge it if your
+application requires it or to reduce it to save memory space.
+
\section options_modelchecking Configuring the Model-Checking
To enable the SimGrid model-checking support the program should
- \c path: \ref options_generic_path
- \c plugin: \ref options_generic_plugin
-- \c surf/nthreads: \ref options_model_nthreads
+- \c storage/max_file_descriptors: \ref option_model_storage_maxfd
+
- \c surf/precision: \ref options_model_precision
- \c <b>For collective operations of SMPI, please refer to Section \ref options_index_smpi_coll</b>
