Jeff Hammond

Information about many aspects of high-performance computing. Wiki content moved to ~/docs.

NWChem: Open Source High-Performance Computational Chemistry

Implementation of MPI that supports large counts

A standalone implementation of the MPI Fortran 2018 module

An MPI ABI compatibility layer

STREAM benchmark

Intel Data Parallel C++ (and SYCL 2020) Tutorial.

Information about AVX-512 support on recent Intel processors

My blog.

This is obsolete. Use this:

MPI Fortran type inference

This is a set of simple programs that can be used to explore the features of a parallel platform.

NWChem TCE CCSD(T) loop-driven kernels for performance optimization experiments

Fortran 200x ISO_C_BINDING wrappers for OpenMP C runtime library calls

SFMalloc (http://aces.snu.ac.kr/Center_for_Manycore_Programming/SFMalloc.html)

MOPAC version 7 (public domain)

OBSOLETE - GO TO THE NEW PROJECT:

No description.

**OLD** OpenSHMEM over MPI-3 **USE NEW LOCATION**

MPI interposition layer to stop blocking calls from spin-waiting

Fortran BACKTRACE without compiler extensions

Fork of http://www.jhauser.us/arithmetic/SoftFloat.html

https://en.cppreference.com/w/cpp/compiler_support but for MPI

PLUMBER: ProfiLer for Understanding of M(PI) BEhavioR

Experiments with multiprecision libraries

A paper about BigMPI

Go to the new fork:

My Home Page

The Thing That Should Not Be

Self-optimizing Python Automatic Generator of Hierarchically blockEd Tensor Transpose librarY

DO NOT WRITE ME WITH HPL SUPPORT QUESTIONS!!! (see the website and the official channels)

Argonne 1-sided (A1)

No description.

**OLD** ARMCI-MPI development repository **DO NOT USE**

A completely unofficial, unsanctioned, unsupported, uneverythinged fork of Intel Threading Building Blocks (TBB)

C library wrapper around Intel's OpenCL USM extension.

No description.

STREAM, for lots of devices written in many programming models

Fortran 2018 standard examples with broad applications

A presentation about the MPI+MPI (MPI-1 plus MPI-3 shared-memory) programming model

The MacPorts ports tree

GPU-accelerated coupled cluster with density fitting

Official MPICH Repository

These are associated with an upcoming chapter in High Performance Parallelism Pearls (http://lotsofcores.com/)

A flexible package manager that supports multiple versions, configurations, platforms, and compilers.

Repository backing the MPI Forum's website

Brilliantly Advanced General Electronic-structure Library

fork of http://htor.inf.ethz.ch/research/nbcoll/libnbc/

A Massively Parallel FFT Library for CPU/GPU

AQUARIUS (Advanced QUAntum moleculaR Iterative eqUation Solver) is a parallel quantum chemistry package built on the Cyclops Tensor Framework which provides high-performance structured tensor operations. AQUARIUS is primarily focused on iterative methods such as CC, CI, and EOMCC.

Fortran implementations of MPI Reductions

https://github.com/flame/blis/issues/265

fork of https://code.google.com/p/hmpi/

https://github.com/mpi-forum/mpi-issues/issues/576

Collaborating on papers for the ISO C++ committee - public repo

No description.

A proxy app for the Monte Carlo Transport Code, Mercury. LLNL-CODE-684037

Partitioned Global Address Space (PGAS) library for distributed arrays

Kripke is a simple, scalable, 3D Sn deterministic particle transport code

High-order Lagrangian Hydrodynamics Miniapp

Implementation of Kahan summation for MPI reductions

Wrappers to HPC libraries such as MPI, BLAS, etc. intended to minimize programmer pain.

Spack's community package recipes

The LLVM Project Blog

Efficient numerical computation of the Pfaffian for dense and banded skew-symmetric matrices

A general spin-orbital coupled-cluster package written in Python.

No description.

Optimized Electron Repulsion Integral computation

An implementation of ARMCI using MPI one-sided communication (RMA)

Shine some light on whether your supercomputer is working

general GTO integrals for quantum chemistry

Official git repository of Elmer FEM software

A simulation of the TCE performance bottleneck

No description.

LAPACK development repository

Unstructured mesh hydrodynamics for advanced architectures

Distributed-memory dense linear algebra

a language for fast, portable data-parallel computation

TileDB array data management

No description.

The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.

SN Application Proxy

MPI wrappers for Julia

RAJA Performance Suite

A parallel programming training mini app simulating weather-like flows

Yaksa: High-performance Noncontiguous Data Management

A Kokkos port of the SNAP application

New implementations of the TeaLeaf heat diffusion mini-app

Benchmarks for Open Source Libraries with Parallel Vector algorithms.

Fork of http://www.jhauser.us/arithmetic/TestFloat.html

a standalone version of the MADNESS mTxm benchmark

Global Arrays trunk (SVN clone)

Fortran proposals

GR-MHD in SYCL for the 2020s and beyond

No description.

A simple example of MPI RMA to run on Cori

No description.

No description.

MPI with Arbitrary Ranks-Per-Node

Automatically exported from code.google.com/p/pami-examples

Automatically exported from code.google.com/p/parallelsampling

One-Sided Primitives

Implementing MPI-like operations to exploit persistence

Automatically exported from code.google.com/p/hpcinchemistrytutorial

Multidimensional replica exchange interface to LAMMPS

Computes the Henry coefficient of methane in IRMOF-1

MPI Testing Tool

No description.

MPI Wrapper Generator

A mini-app that captures the communication pattern of NWChem---block-sparse matrix multiplication---in flat MPI and hybrid MPI+OpenMP configurations.

This repository contains remote memory spaces, which implement shared memory semantics across multiple processes.

T-cell motility simulator

A parallel runtime library for Fortran 2018 compilers

Counter-based random number generators for C, C++ and CUDA.

Implementations of SIMD instruction sets for systems which don't natively support them.

Memory system characterization benchmarks using atomic operations

A translator from Intel SSE intrinsics to Arm/Aarch64 NEON implementation

The next version of bwa-mem

Little OpenMP Library

Cyclops Tensor Framework: parallel arithmetic on multidimensional arrays

This is the canonical git mirror of the LLVM subversion repository. Please see http://llvm.org/ for instructions on contributing to LLVM.

RAJA Performance Portability Layer

MiniMD Molecular Dynamics Mini-App

BLAS-like Library Instantiation Software Framework

Livermore Unstructured Lagrangian Explicit Shock Hydrodynamics (LULESH)

Thin C++-flavored wrappers for the CUDA Runtime API

OpenSHMEM Implementation on MPI

A parallel application binary interface for Fortran 2018 compilers.

No description.

Process-based Asynchronous Progress Model for MPI Communication

A "generic" MPI (shim) library which supports MPICH, OpenMPI, HPMPI, and other vendor provided MPI libraries.

Giga Updates Per Second

Testing numerical kernels in SW4

No description.

Buzz Matrix

No description.

Exercises and Solutions for "Programming Your GPU with OpenMP: A Hands-On Introduction"

A LaTeX template for ISO C++ committee (aka WG21) papers.

No description.

Numerical experiments on the Boys function used in atomic integral computations

No description.

Script to help install Intel C/C++ Compiler on Travis CI.

A light-weight MPI profiler.

Distributed Array Library with Extensible Communication (DALEC)

NWChem Documentation

pocl - Portable Computing Language

High-Performance Tensor Transpose library

A conda-smithy repository for BigMPI (derived from https://github.com/conda-forge/mpich-feedstock)

No description.

Scalable Integer Sort application for co-design in the exascale era

MPI Quality-of-Implementation Tests

OpenSHMEM Specification

Fine-Grain MPI (FG-MPI)

Extensions for parallel programming

Tickets for the MPI Forum

Some small extensions for OpenSHMEM