This revision of the guide documents features from both OpenGL Multipipe 2.5.3 and OpenGL Multipipe 2.5.4.
OpenGL Multipipe 2.5.4 features, released with SGI ProPack 4 Service Pack 3:
Two performance monitoring tools: ompmon and a Performance Co-Pilot data collection agent
Support for context sharing between threads
Time-Based decomposition using hardware compositors
Memory placement and use of the tmpfs filesystem
Support for the OpenGL Shading Language and the ARB_texture_rectangle extension
Slave synchronization on glFlush() for single-buffer windows
OpenGL Multipipe 2.5.3 features, released with SGI ProPack 4 Service Pack 2:
Improved immediate mode performance
Improved performance for downloading pixel data
Preservation of triangle strips when spatially splitting a display list
Better control over the number of splits done by dlSplit