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LAPACK

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  Analyzed 7 months ago

LAPACK provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. The associated matrix factorizations (LU, Cholesky, QR, SVD, Schur, generalized Schur) are also provided, as are ... [More] related computations such as reordering of the Schur factorizations and estimating condition numbers. Dense and banded matrices are handled, but not general sparse matrices. In all areas, similar functionality is provided for real and complex matrices, in both single and double precision. Note: Ohloh's statistics are not accurate. LAPACK has dozens of major contributors, but most do not use any form of source control. Contributions are merged by only a few people, and then only in bursts. [Less]

1.94M lines of code

5 current contributors

9 months since last commit

10 users on Open Hub

Activity Not Available
4.8
   
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pcc

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  Analyzed 8 months ago

The project goal is to write a C99 compiler while still keeping it small, simple, fast and understandable.

136K lines of code

2 current contributors

9 months since last commit

7 users on Open Hub

Activity Not Available
4.85714
   
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ZOO-Project

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Claimed by OSGeo - The Open Source Geo... Analyzed 18 days ago

ZOO is a WPS (Web Processing Service) open source project released under a MIT/X-11 style license . It provides an OGC WPS compliant developer-friendly framework to create and chain WPS Web services. ZOO is made of three parts: * ZOO-Kernel : A powerful server-side C Kernel which makes it ... [More] possible to manage and chain Web services coded in different programming languages. * ZOO-Services : A growing suite of example Web services based on various Open Source libraries. (get inspired !) * ZOO-API : A server-side JavaScript API able to call and chain the ZOO Services, which makes the development and chaining processes easier. [Less]

759K lines of code

4 current contributors

about 2 months since last commit

6 users on Open Hub

Moderate Activity
5.0
 
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NWChem

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  Analyzed 10 months ago

NWChem aims to provide its users with computational chemistry tools that are scalable both in their ability to treat large scientific computational chemistry problems efficiently, and in their use of available parallel computing resources from high-performance parallel supercomputers to conventional workstation clusters.

5.72M lines of code

13 current contributors

11 months since last commit

4 users on Open Hub

Activity Not Available
0.0
 
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Quantum ESPRESSO

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  Analyzed 10 months ago

Quantum ESPRESSO is an integrated suite of Open-Source computer codes for electronic-structure calculations and materials modeling at the nanoscale. It is based on density-functional theory, plane waves, and pseudopotentials. Quantum ESPRESSO stands for opEn Source Package for Research in ... [More] Electronic Structure, Simulation, and Optimization. Quantum ESPRESSO is evolving towards a distribution of independent and inter-operable codes in the spirit of an open-source project. Researchers active in the field of electronic-structure calculations are encouraged to participate in the project by contributing their own codes or by implementing their own ideas into existing codes. [Less]

447K lines of code

26 current contributors

about 1 year since last commit

3 users on Open Hub

Activity Not Available
0.0
 
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ROSE Compiler

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  Analyzed 5 months ago

A compiler infrastructure to build source-to-source program transformation and analysis tools.

5.58M lines of code

18 current contributors

5 months since last commit

3 users on Open Hub

Activity Not Available
5.0
 
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CP2K

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  Analyzed 18 days ago

CP2K is a program to perform atomistic and molecular simulations of solid state, liquid, molecular, and biological systems. It provides a general framework for different methods such as e.g., density functional theory (DFT) using a mixed Gaussian and plane waves approach (GPW) and classical pair and ... [More] many-body potentials. CP2K is freely available under the GPL license. It is written in Fortran 95 and can be run efficiently in parallel. [Less]

978K lines of code

18 current contributors

about 2 months since last commit

3 users on Open Hub

High Activity
5.0
 
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FreeON

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Claimed by Los Alamos National Lab Analyzed 8 months ago

FreeON is an experimental, open source (GPL) suite of programs for linear scaling quantum chemistry. It is highly modular, and has been written from scratch for N-scaling SCF theory in Fortran95 and C. Platform independent I/O is supported with HDF5. FreeON should compile with most modern Linux ... [More] distributions and OS X. FreeON performs Hartree-Fock, pure Density Functional, and hybrid HF/DFT calculations (e.g. B3LYP) in a Cartesian-Gaussian LCAO basis. All algorithms are O(N) or O(N log N) for non-metallic systems. Periodic boundary conditions in 1, 2 and 3 dimensions have been implemented through the Lorentz field (Γ-point), and an internal coordinate geometry optimizer allows full (atom+cell) relaxation using analytic derivatives. Effective core potentials for energies and forces have been [Less]

992K lines of code

0 current contributors

over 1 year since last commit

2 users on Open Hub

Activity Not Available
0.0
 
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Open Fortran Compiler

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Claimed by Codethink Ltd. Analyzed 20 days ago

Open Fortran Compiler aiming to provide static code analysis, modernization and compilation of legacy fortran.

45.8K lines of code

5 current contributors

2 months since last commit

2 users on Open Hub

Low Activity
5.0
 
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Cactus

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  Analyzed 9 months ago

Cactus is an open source problem solving environment designed for scientists and engineers. Its modular structure easily enables parallel computation across different architectures and collaborative code development between different groups. Cactus originated in the academic research community ... [More] , where it was developed and used over many years by a large international collaboration of physicists and computational scientists. [Less]

388K lines of code

8 current contributors

10 months since last commit

2 users on Open Hub

Activity Not Available
4.0
   
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