What does Direct Burst Mean?
In Realizm I, Pentium Pro, Vertex Manipulation
- CPU reads dataset from main memory, modifies, writes back main memory
- Notifies DMA on Realizm board, DMA uses PCI bus to transfer to geometry engine
- CPU Main Memory Read, CPU Main Memory Write, DMA Read.
In Realizm II, Pentium II, Vertex Manipulation
- CPU reads dataset from main memory, modies, write to Pentium II Burst buffer using “uncached speculative write command”
- Pentium II Burst engine then streams data directly to geometry engine via PCI bus
- CPU MM Read, CPU Local write, CPU Burst => 30% more performance