LynxOS-SE RTOS

Time- and space-partitioned RTOS with open-standards APIs

The LynxOS®-SE RTOS is the first and only time- and space-partitioned, hard real-time operating system with the ability to run POSIX®, ARINC 653 and Linux® applications simultaneously in a single partition.

LynxOS-SE is based on open standards and is designed specifically to fulfill the stringent needs of multithreaded and multiprocess applications in high-performance systems.

It offers the interoperability benefits of the latest POSIX 1003.13:2003 (PSE53) standard as well as the ARINC 653 APplication EXecutive (APEX).

Time and space partitioning for fault containment

LynxOS-SE runs standalone on x86 processors and as a guest OS with LynxSecure on x86.

Safety and reliability are achieved through Virtual Machine (VM) brick-wall partitions, which make it impossible for system events in one partition to interfere with events in another. Each partition runs as a virtual machine with dedicated resources.

Memory and resources are never shared between the partitions in a LynxOS-SE system, and an ARINC 653-based fixed-cyclic scheduling algorithm ensures that the system is deterministic and safe by providing each partition with fixed cycles of execution time.

Further, system partitioning allows real-time applications of various domains to be executed concurrently in different partitions on the same processor, according to the needs of each individual project. For additional containment, file systems in DRAM, Flash, and USB devices can be mounted read-write or read-only.

LynxOS-SE RTOS features

• POSIX 1003.1-2003 PSE53 conformance
• Linux 2.6 (glibc 2.3.3) ABI support
• ELF file format
• Up to 2 GB RAM
• TCP/IP networking stack with IPv4, IPSEC and QoS
• NFS v4 support
• C++, Ada and Java support
• X-windows, Lestif, OpenGL
• GCC 3.4.3 compiler and GDB 6.x debugger
• USB 2.0, Serial ATA