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MPI (Message Passing Interface) is a specification for a standard library for message passing that was defined by the MPI Forum, a broadly based group of parallel computer vendors, library writers, and applications specialists. Multiple implementations of MPI have been developed. In this paper, we describe MPICH, unique among existing implementations in its(More)
  • Satish Balay, Kris Buschelman, Victor Eijkhout, William Gropp, Dinesh Kaushik, Matt Knepley +3 others
  • 2007
This manual describes the use of PETSc for the numerical solution of partial differential equations and related problems on high-performance computers. The Portable, Extensible Toolkit for Scientific Computation (PETSc) is a suite of data structures and routines that provide the building blocks for the implementation of large-scale application codes on(More)
In this paper, we propose a strategy for implementing parallel-I/O interfaces portably and eeciently. We have deened an abstract-device interface for parallel I/O, called ADIO. Any parallel-I/O API can be implemented on multiple le systems by implementing the API portably on top of ADIO, and implementing only ADIO on diierent le systems. This approach(More)
The Message Passing Interface (MPI) specification is widely used for solving significant scientific and engineering problems on parallel computers. There exist more Gropp is a completely up to appear in the existing mpi supercomputers appear. The area of mpi functionality added by the cm. The most frequently misunderstood feature of, the new extensions to(More)
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We describe our work on improving the performance of collective communication operations in MPICH for clusters connected by switched networks. For each collective operation, we use multiple algorithms depending on the message size, with the goal of minimizing latency for short messages and minimizing bandwidth use for long messages. Although we have(More)