PEACE Threads Interface on Microkernel
Recently, thread libraries have become powerful entities to support
parallel programming on shared memory multiprocessors and multicomputers.
However, the disparity between the primitives offered by the operating
systems and threadís interface creates a challenge for those who wish to
create portable threads library. The implementation of PEACE (POSIX Extensions
to an Advanced Computing Environment) threads library conforms to the POSIX
P1003.4a draft of threads interface standard on top of PARAS advanced computing
environment on a PARAM supercomputer advented by C-DAC, India. The prime
objective of this implementation is to support standard thread interface
and enhance the portability of applications developed on PARAM, which was
not possible earlier because of the usage of custom built thread interface
(CORE), in the development of applications.
PEACE threads provide portable threads within a single task, while
allowing fully concurrent access to the system resources. Threads can be
quickly created and synchronization among the multiple threads can be accomplished
rapidly. These threads have the potential to liberate software developers
from the limitations of the age old fork() model. In this paper, we discuss
the parallel operating system model, microkernel, machine architecture,
thread model, thread library architecture with implementation issues, and
POSIX threads interface.
Click here to download the PEACE Threads Paper
(which is in Postscript format)
Appeared in: The 3rd International Conference on Avanced Computing,