A collective I/O implementation based on inspector–executor paradigm

ViMPIOS, a "Truly" Portable MPI-IO Implementation

ViMPIOS, a "truly" portable MPI-IO implementation

We present ViMPIOS, a novel MPI-IO implementation based on ViPIOS, the Vienna Parallel Input Output System. ViMPIOS inherits the defining characteristics of ViPIOS, which makes it a client-server based system focusing on cluster architectures. ViMPIOS stands out from all other MPI-IO implementations by its ”truly” portable design, which allows not only applications to be transferred between par...

On the Implementation of a Portable, Client-Server Based MPI-IO Interface

In this paper we present the MPI-IO Interface kernel in the Vienna Parallel Input Output System (ViPIOS), which is a client-server based parallel I/O system. Compared to the already existing parallel I/O systems and libraries the concept of an independent distributed server promises to greatly enhance the usability and acceptance of the I/O system as well as the portability of client applicatio...

MPI/IO on DAFS over VIA: Implementation and Performance Evaluation

In this paper, we describe an implementation of MPI-IO on top of the Direct Access File System (DAFS) standard. The implementation is realized by porting ROMIO on top of DAFS. We identify one of the main mismatches between MPI-IO and DAFS is memory management. Three different design alternatives for memory management are proposed, implemented, and evaluated. We find that memory management in th...

Design and Implementation of Semi-preemptible IO

Allowing higher-priority requests to preempt ongoing disk IOs is of particular benefit to delay-sensitive multimedia and real-time systems. In this paper we propose Semi-preemptible IO, which divides an IO request into small temporal units of disk commands to enable preemptible disk access. We present main design strategies to allow preemption of each component of a disk access—seek, rotation, ...