HPcc as Multi-Tier Commodity Software Model
Essential idea is consider a three tier model
- Top tier is the client
- Second tier are servers coordinated by object web commodity technologies such as the Web and CORBA and communicating via HTTP(Web), IIOP(CORBA), RMI or custom Java sockets.
- JWORB is a nifty server built by NPAC which understands all object models
- Use middle tier component/container model -- Enterprise Javabeans or equivalent technology
- Third tier are services such as databases, parallel computers and scientific library engines (NetSolve)
Preserve the first two tiers as a high functionality commodity information processing system and confine HPCC to the third (lowest) tier.
- MPI becomes the high performance “machine code” for message passing which you use if HTTP, IIOP or RMI have insufficient performance