1. Parallel I/O System for Massively Parallel Processors
PAVEMENT/PIO
Parallel I/O System for Massively Parallel Processors
MPP (Massively Parallel Processor)
Front-end Machine
（Multiprocessor）
Utilizing Multiple I/O Processors on MPP
Commodity Network Media for High Cost/Performance
Automatic/Dynamic Load Balancing among Parallel Conenections
PAVEMENT/PIO provides a flexible, self load balanced and high cost/performance parallel input/output environment which enrolls surrounding front-end machines to any style of massively parallel processing system.
API of PAVEMENT/PIO is very simple and easy-to-program for end user applications which require high throughput I/O interactions with file servers, visualization servers and/or other outer environments for the next generation HPC platforms.
Scalability for # of connections
Effect of Dynamic Load Balancing

2. PAVEMENT/VIZ Parallel Visualization Environment for Large Amount Data
binder
AVS/Express
read module
Data Buffer
(shared memory)
thread
Onyx2 (Visualizer)
PAVEMENT/VIZ is a parallelized visualization system on shared memory front-end graphic workstation, which coordinates with MPP to visualize large amount of numerical output based on PAVEMENT/PIO.
Multi-threaded parallel visualization software engines like parallel volume rendering module provide high speed visualization environment.
PAVEMENT/VIZ is implemented based on AVS/Express for high portability and flexibility.
Massively Parallel Processor
CP-PACS
(2048 PUs, 128 IOUs)
Parallel Visualization Server
SGI Onyx2 (4 Processors)
Parallel File Server
SGI Origin-2000 (8 Processors)
Switching
HUB
Parallel
100Base-TX
Ethernet …
8 links
Alpha Cluster
HYADES (16 Nodes)
Experimental Environment of PAVEMENT
(Parallel I/O and Visualization Environment)