Section: Software

TakTuk - Adaptive large scale remote execution deployment

Participants : Guillaume Huard [correspondant] , Pierre Neyron.

TakTuk is a tool for deploying remote execution commands to a potentially large set of remote nodes. It spreads itself using an adaptive algorithm and set up an interconnection network to transport commands and perform I/Os multiplexing/demultiplexing. The TakTuk algorithms dynamically adapt to environment (machine performance and current load, network contention) by using a reactive algorithm that mix local parallelization and work distribution. Characteristics:

• adaptivity: efficient work distribution is achieved even on heterogeneous platforms thanks to an adaptive work-stealing algorithm

• scalability TakTuk has been tested to perform large size deployments (hundreds of nodes), either on SMPs, regular clusters or clusters of SMPs

• portability: TakTuk is architecture independent (tested on x86, PPC, IA-64) and distinct instances can communicate whatever the machine they're running on

• configurability: mechanics are configurable (deployment window size, timeouts, ...) and TakTuk outputs can be suppressed/formatted using I/O templates Outstanding features:

• auto-propagation: the engine can spread its own code to remote nodes in order to deploy itself

• communication layer: nodes successfully deployed are numbered and perl scripts executed by TakTuk can send multicast communications to other nodes using this logical number

• information redirection: I/O and commands status are multiplexed from/to the root node. http://taktuk.gforge.inria.fr under GNU GPL licence.