SimGrid
3.11
Versatile Simulation of Distributed Systems
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This page does not exist yet, sorry. We are currently refurbishing the user documentation – the internal documentation will follow (FIXME).
There is two main things you want to know about the internals of SimGrid. First, you need to understand the component organization, as SimGrid is heavily layered, with each level being rather highly specialized and optimized toward a task. For that, please keep reading this page. If you work actively on the SimGrid project, the second point you need to understand is about the infrastructure of the SimGrid project, ie how to extend the framework in any way, how the automatic tests are run, and so on. These informations are split on several pages, as follows:
SimGrid provides several programmation environments built on top of a unique simulation kernel. Each environment targets a specific audiance and constitutes a different paradigm. To choose which of them you want to use, you have to think about what you want to do and what would be the result of your work.
If your favorite programming environment/model is not there (BSP, components, OpenMP, etc.) is not represented in the SimGrid toolkit yet, you may consider adding it. You should contact us first on the SimGrid developers mailing list, though.
The core functionnalities to simulate a virtual platform are provided by a module called SURF. It is very low-level and is not intended to be used as such by end-users. Instead, it serve as a basis for the higher level layer.
SURF main features are a fast max-min linear solver and the ability to change transparently the model used to describe the platform. This greatly eases the comparison of the several models existing in the litterature.
See the SURF section for more details.
The base of the whole toolkit is constituted by the XBT (eXtended Bundle of Tools).
It is a portable library providing some grounding features such as Logging support, Exception support and Configuration support. XBT also encompass the following convenient datastructures: Dynar: generic dynamic array, Fifo: generic workqueue, Dict: generic dictionnary, Heap: generic heap data structure, Set: generic set datatype and Swag: O(1) set datatype.
See the XBT section for more details.
Finally, a transversal module allows you to trace your simulation. More documentation in the section TRACE documentation