Parallel Database Extensions (PDE) is a software interface layer between the operating system and Vantage. PDE supports the parallelism that gives Vantage its speed and linear scalability. PDE provides Vantage with the ability to do the following:
- Run in a parallel environment
- Execute vprocs
- Manage and prioritize Vantage workloads
- Consistently manage memory, I/O, and messaging system interfaces across multiple OS platforms
PDE provides a series of parallel operating system services, which include the following:
- Facilities to manage parallel execution of database operations on multiple nodes.
- Dynamic distribution of database tasks.
- Coordination of task execution within and between nodes.
PDE enables MPP systems to use hardware features such as the BYNET and shared disk arrays.