ACML

Category: Libraries-Math

Description

The AMD Core Math Library (ACML) is a set of numerical routines tuned specifically for AMD64 platform processors (including OpteronTM and AthlonTM64). On Cray XT systems, ACML is provided by Cray.

The routines, which are available via both FORTRAN 77 and C interfaces, include:

The BLAS and LAPACK routines provide a portable and standard set of interfaces for common numerical linear algebra operations that allow code containing calls to these routines to be readily ported across platforms. Full documentation for the BLAS and LAPACK are available online.

The FFT is an implementation of the Discrete Fourier Transform (DFT) that makes use of symmetries in the definition to reduce the number of operations required from O(n*n) to O(n*log n) when the sequence length, n, is the product of small prime factors; in particular, when n is a power of 2. Despite the popularity and widespread use of FFT algorithms, the definition of the DFT is not sufficiently precise to prescribe either the forward and backward directions (these are sometimes interchanged), or the scaling factor associated with the forward and backward transforms (the combined forward and backward transforms may only reproduce the original sequence by following a prescribed scaling).

Currently, there is no agreed standard API for FFT routines. Hardware vendors usually provide a set of high performance FFTs optimized for their systems: no two vendors employ the same interfaces for their FFT routines. The ACML provides a set of FFT routines, optimized for AMD64 processors, using an ACML-specific set of interfaces.

The RNG is a comprehensive set of statistical distribution functions which are founded on various underlying uniform distribution generators (base generators) including Wichmann- Hill and an implementation of the Mersenne Twister. In addition there are hooks which allow you to supply your own preferred base generator if it is not already included in ACML.

A supplementary library of fast math and fast vector math functions (ACML MV) is also provided with some 64-bit versions of ACML. Some of the functions included in ACML MV are not callable from high-level languages, but must be called via assembly language.

For more information, see ACML User guide.

Use

A acml module is loaded by default. A module avail command will show what versions are available.

  module list acml
  module avail acml
  fortran_compiler test.f90 -lacml   
Note that if you use the Cray wrappers to compile and link, they will find the libsci library first (as Cray suggests.)

Support

This package has the following support level : Supported

Available Versions

Version Available Builds
pgi gnu pathscale Other
4.2.0 vendor
4.1.0
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