DLB - A Dynamic Load Balancing Tool for Grid Computing

摘要

We have demonstrated a compact form of DLB integrated with a parallel CFD test case program applicable to Linux and Unix flavored computers in Grid environment. System load measurement of DLB is modified with average load history provided by Unix/Linux systems rather than tracking processes by system agents of the DLB package. In addition, load balancer program has been implemented in Java same as all other units of the DLB to make it all in one language. Parallel simulations have shown that DLB makes significant improvement for better load balance on the system. File I/O and running DLB is smooth. Using LAM/MPI makes program start and halt easier than MPICH due to starting/halting parallel environment with daemons running on all compute nodes. In this version, user provides script file to start/halt all programs and environments and running of DLB for several cycles. This can be automated further by providing a better user interface to DLB package.