Preface

This document describes the NVIDIA Fortran interfaces to cuBLAS, cuFFT, cuRAND, cuSPARSE, and other CUDA Libraries used in scientific and engineering applications built upon the CUDA computing architecture.

Intended Audience

This guide is intended for application programmers, scientists and engineers proficient in programming with the Fortran language. This guide assumes some familiarity with either CUDA Fortran or OpenACC.

Organization

The organization of this document is as follows:

Introduction

contains a general introduction to Fortran interfaces, OpenACC, CUDA Fortran, and CUDA Library functions

BLAS Runtime Library

describes the Fortran interfaces to the various cuBLAS libraries

FFT Runtime Library APIs

describes the module types, definitions and Fortran interfaces to the cuFFT library

Random Number Runtime APIs

describes the Fortran interfaces to the host and device cuRAND libraries

Sparse Matrix Runtime APIs

describes the module types, definitions and Fortran interfaces to the cuSPARSE Library

Matrix Solver Runtime APIs

describes the module types, definitions and Fortran interfaces to the cuSOLVER Library

Tensor Primitives Runtime APIs

describes the module types, definitions and Fortran interfaces to the cuTENSOR Library

NVIDIA Collective Communications Library APIs

describes the module types, definitions and Fortran interfaces to the NCCL Library

NVSHMEM Communication Library APIs

describes the module types, definitions and Fortran interfaces to the NVSHMEM Library

NVTX Profiling Library APIs

describes the module types, definitions and Fortran interfaces to the NVTX API and Library

Examples

provides sample code and an explanation of each of the simple examples.

Conventions

This guide uses the following conventions:

italic

is used for emphasis.

Constant Width

is used for filenames, directories, arguments, options, examples, and for language statements in the text, including assembly language statements.

Bold

is used for commands.

[ item1 ]

in general, square brackets indicate optional items. In this case item1 is optional. In the context of p/t-sets, square brackets are required to specify a p/t-set.

{ item2 | item 3 }

braces indicate that a selection is required. In this case, you must select either item2 or item3.

filename …

ellipsis indicate a repetition. Zero or more of the preceding item may occur. In this example, multiple filenames are allowed.

FORTRAN

Fortran language statements are shown in the text of this guide using a reduced fixed point size.

C++ and C

C++ and C language statements are shown in the test of this guide using a reduced fixed point size.

Terminology

If there are terms in this guide with which you are unfamiliar, see the NVIDIA HPC glossary.

Related Publications

The following documents contain additional information related to OpenACC and CUDA Fortran programming, CUDA, and the CUDA Libraries.

• ISO/IEC 1539-1:1997, Information Technology – Programming Languages – FORTRAN, Geneva, 1997 (Fortran 95).

• NVIDIA CUDA Programming Guides, NVIDIA. Available online at docs.nvidia.com/cuda.

• NVIDIA HPC Compiler User’s Guide. Available online at docs.nvidia.com/hpc-sdk.