Sun HPC ClusterTools 3.0 Software

Sun HPC ClusterTools 3.0 Software is an integrated ensemble of parallel development tools that extend Sun's network computing solutions to high-end distributed-memory applications. The Sun HPC ClusterTools products can be used either in the Cluster Runtime Environment or with LSF Suite 3.2.2, Platform Computing Corporation's resource management software, extended with parallel support.

Sun HPC ClusterTools components run under Solaris 2.6 or Solaris 7 (32- or 64-bit).

Sun MPI and MPI I/O

Sun MPI is a highly optimized version of the Message-Passing Interface (MPI) communications library. Sun MPI implements all of the MPI 1.2 standard as well as a significant subset of the MPI 2.0 feature list. For example, Sun MPI provides the following features:

• Support for multithreaded programming.

• Seamless use of different network protocols; for example, code compiled on a Sun HPC cluster that has a Scalable Coherent Interface (SCI) network, can be run without change on a cluster that has an ATM network.

• Multiprotocol support such that MPI picks the fastest available medium for each type of connection (such as shared memory, SCI, or ATM).

• Communication via shared memory for fast performance on clusters of SMPs.

• Finely tunable shared memory communication.

• Optimized collectives for symmetric multiprocessors (SMPs).

• Prism support - Users can develop, run, and debug programs in the Prism programming environment.

• MPI I/O support for parallel file I/O.

• Sun MPI is a dynamic library.

Sun MPI provides full F77, C, and C++ support and Basic F90 support.

Parallel File System

Sun HPC ClusterTools's Parallel File System (PFS) component provides high-performance file I/O for multiprocess applications running in a cluster-based, distributed-memory environment.

PFS file systems closely resemble UFS file systems, but provide significantly higher file I/O performance by striping files across multiple PFS I/O server nodes. This means the time required to read or write a PFS file can be reduced by an amount roughly proportional to the number of file server nodes in the PFS file system.

PFS is optimized for the large files and complex data access patterns that are characteristic of parallel scientific applications.

Prism

Prism is the Sun HPC graphical programming environment. It allows you to develop, execute, debug, and visualize data in message-passing programs. With Prism you can

• Control program execution, such as:

  • Start and stop execution.

  • Set breakpoints and traces.

  • Print values of variables and expressions.

  • Display the call stack.

• Visualize data in various formats.

• Analyze performance of MPI programs.

• Control entire multiprocess parallel jobs, aggregating processes into meaningful groups, called process sets or psets.

Prism can be used with applications written in F77, F90, C, and C++.

Sun S3L

The Sun Scalable Scientific Subroutine Library (Sun S3L) provides a set of parallel and scalable functions and tools that are used widely in scientific and engineering computing. It is built on top of MPI and provides the following functionality for Sun MPI programmers:

• Vector and dense matrix operations (level 1, 2, 3 Parallel BLAS)

• Iterative solvers for sparse systems

• Matrix-vector multiply for sparse systems

• FFT

• LU factor and solve

• Autocorrelation

• Convolution/deconvolution

• Tridiagonal solvers

• Banded solvers

• Eigensolvers

• Singular value decomposition

• Least squares

• One-dimensional and multidimensional sorts

• Selected ScaLAPACK and BLACS application program interface

• Conversion between ScaLAPACK and S3L

• Matrix transpose

• Random number generators (linear congruential and lagged Fibonacci)

• Random number generator and I/O for sparse systems

• Matrix inverse

• Array copy

• Safety mechanism

• An array syntax interface callable from message-passing programs

• Toolkit functions for operations on distributed data

• Support for the multiple instance paradigm (allowing an operation to be applied concurrently to multiple, disjoint data sets in a single call)

• Thread safety

• Detailed programming examples and support documentation provided online

Sun S3L routines can be called from applications written in F77, F90, C, and C++.

Sun Compilers

The Sun HPC ClusterTools 3.0 release supports the following Sun compilers:

• Sun WorkShop Compilers C/C++ 4.2 (also included in Sun Visual WorkShop C++ 3.0)

• Sun WorkShop Compilers Fortran 4.2 (also included in Sun Performance WorkShop Fortran 3.0)

• Sun Visual WorkShop C++ 5.0

• Sun Performance WorkShop Fortran 5.0

Cluster Console Manager

The Cluster Console Manager is a suite of applications (cconsole, ctelnet, and crlogin) that simplify cluster administration by enabling the administrator to initiate commands on all nodes in the cluster simultaneously. When invoked, the selected Cluster Console Manager application opens a master window and a set of terminal windows, one for each node in the cluster. Any command entered in the master window is broadcast to all the nodes in the cluster. The commands are echoed in the terminal windows, as are messages received from the respective nodes.

Switch Management Agent

The Switch Management Agent (SMA) supports management of the Scalable Coherent Interface (SCI), including SCI session management and various link and switch states.