
SGI Performance Suite Software Bundles
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Message Passing Toolkit (MPT) User’s Guide.
Unified Parallel C (UPC) User’s Guide.
For more information on xpmem and SHMEM, see the “System Partitioning” section of
Chapter 2. “Configuring Your System” in the SGI Altix UV Systems Linux Configuration
and Operations Guide.
SGI® REACT™
SGI® REACT™ is hard real-time performance for Linux and includes the following
software packages:
• Linux REACT stack
• External interrupt driver
• REACT/Pro Frame Scheduler
The REACT/Pro Frame Scheduler is an execution manager that schedules
pthreads or processes on one or more CPUs in a predefined cyclic order (see the
frs(3) man page).
• Kernel barrier (kbar) facility
The kernel barrier (kbar) facility provides for the fast wakeup of many blocked
user threads. When the barrier is signaled the operating system will use a
configurable number of CPUs to quickly wake all the hreads blocked on it (seethe
kbar(3) man page).
• sgi-shield kernel module
Enables the use of the cpu_shield routine that controls timer interrupts on select
CPUs
• User level interrupt facility (see the uli(3) man page).
• SGI Linux Trace (SLT)
For more information on SGI REACT, see REACT Real-Time Programmer’s Guide.
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