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Several ``--cfg`` command line arguments can naturally be used. If you
need to include spaces in the argument, don't forget to quote the
-argument. You can even escape the included quotes (write @' for ' if
-you have your argument between ').
+argument. You can even escape the included quotes (write ``@'`` for ``'`` if
+you have your argument between simple quotes).
Another solution is to use the ``<config>`` tag in the platform file. The
only restriction is that this tag must occur before the first
- ``cpu/model``: specify the used CPU model. We have only one model
for now:
- - **Cas01:** Simplistic CPU model (time=size/power)
+ - **Cas01:** Simplistic CPU model (time=size/speed)
- ``host/model``: The host concept is the aggregation of a CPU with a
network card. Three models exists, but actually, only 2 of them are
the host energy plugin by adding ``--cfg=plugin:host_energy`` to your
command line.
-Here is the full list of plugins that can be activated this way:
+Here is a partial list of plugins that can be activated this way. You can get
+the full list by passing ``--cfg=plugin:help`` to your simulator.
- - **host_energy:** keeps track of the energy dissipated by
- computations. More details in @ref plugin_energy.
- - **link_energy:** keeps track of the energy dissipated by
- communications. More details in @ref SURF_plugin_energy.
- - **host_load:** keeps track of the computational load.
- More details in @ref plugin_load.
+ - :ref:`Host Energy <plugin_host_energy>`: models the energy dissipation of the compute units.
+ - :ref:`Link Energy <plugin_link_energy>`: models the energy dissipation of the network.
+ - :ref:`Host Load <plugin_host_load>`: monitors the load of the compute units.
.. _options_modelchecking:
If you want to specify liveness properties, you have to pass them on
the command line, specifying the name of the file containing the
-property, as formatted by the ltl2ba program. Note that ltl2ba is not
-part of SimGrid and must be installed separatly.
+property, as formatted by the `ltl2ba <https://github.com/utwente-fmt/ltl2ba>`_ program.
+Note that ltl2ba is not part of SimGrid and must be installed separatly.
.. code-block:: shell
Note that this feature may break the current implementation of the
DPOR reduction technique.
-The ``model-check/visited`` item is the maximum number of states,, which
+The ``model-check/visited`` item is the maximum number of states, which
are stored in memory. If the maximum number of snapshotted state is
reached, some states will be removed from the memory and some cycles
might be missed. Small values can lead to incorrect verifications, but
communication determinism mode of the model checker, which checks
determinism properties of the communications of an application.
+.. _options_mc_perf:
+
Verification Performance Considerations
.......................................
consumption when using model-checking. By default, each snapshot will
save a copy of the whole stacks and not only of the part that is
really meaningful: you should expect the contribution of the memory
-consumption of the snapshots to be @f$ @mbox{number of processes}
-@times @mbox{stack size} @times @mbox{number of states} @f$.
+consumption of the snapshots to be:
+:math:`\text{number of processes} \times \text{stack size} \times \text{number of states}`.
When compiled against the model checker, the stacks are not
protected with guards: if the stack size is too small for your
execution path. All options (but the model checker related ones) must
remain the same. In particular, if you ran your application with
``smpirun -wrapper simgrid-mc``, then do it again. Remove all
-MC-related options, keep the other ones and add
-``--cfg=model-check/replay``.
+MC-related options, keep non-MC-related ones and add
+``--cfg=model-check/replay:???``.
Currently, if the path is of the form ``X;Y;Z``, each number denotes
the actor's pid that is selected at each indecision point. If it's of
.. code-block:: shell
- --cfg=tracing:yes --cfg=tracing/uncategorized:yes --cfg=triva/uncategorized:uncat.plist
+ --cfg=tracing:yes --cfg=tracing/uncategorized:yes
- The first parameter activates the tracing subsystem, the second
+ The first parameter activates the tracing subsystem, and the second
tells it to trace host and link utilization (without any
- categorization) and the third creates a graph configuration file to
- configure Triva when analysing the resulting trace file.
+ categorization).
- MSG or SimDag-based simulator and categorized traces (you need to
declare categories and classify your tasks according to them)
.. code-block:: shell
- --cfg=tracing:yes --cfg=tracing/categorized:yes --cfg=triva/categorized:cat.plist
+ --cfg=tracing:yes --cfg=tracing/categorized:yes
- The first parameter activates the tracing subsystem, the second
- tells it to trace host and link categorized utilization and the
- third creates a graph configuration file to configure Triva when
- analysing the resulting trace file.
+ The first parameter activates the tracing subsystem, and the second
+ tells it to trace host and link categorized utilization.
- SMPI simulator and traces for a space/time view:
to **no**. This option just ignores the timings in your simulation; it
still executes the computations itself. If you want to stop SMPI from
doing that, you should check the SMPI_SAMPLE macros, documented in
-Section :ref:`SMPI_adapting_speed`.
+Section :ref:`SMPI_use_faster`.
+------------------------------------+-------------------------+-----------------------------+
| Solution | Computations executed? | Computations simulated? |
With the ``global`` algorithm, each call to SMPI_SHARED_MALLOC()
returns a new address, but it only points to a shadow block: its memory
-area is mapped on a 1MB file on disk. If the returned block is of size
-N MB, then the same file is mapped N times to cover the whole bloc.
+area is mapped on a 1 MiB file on disk. If the returned block is of size
+N MiB, then the same file is mapped N times to cover the whole bloc.
At the end, no matter how many times you call SMPI_SHARED_MALLOC, this will
-only consume 1 MB in memory.
+only consume 1 MiB in memory.
You can disable this behavior and come back to regular mallocs (for
-example for debugging purposes) using @c "no" as a value.
+example for debugging purposes) using ``no`` as a value.
If you want to keep private some parts of the buffer, for instance if these
parts are used by the application logic and should not be corrupted, you
When smpi/shared-malloc:global is used, the memory consumption problem
is solved, but it may induce too much load on the kernel's pages table.
In this case, you should use huge pages so that the kernel creates only one
-entry per MB of malloced data instead of one entry per 4 KB.
+entry per MB of malloced data instead of one entry per 4 kB.
To activate this, you must mount a hugetlbfs on your system and allocate
at least one huge page:
