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ceph

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  Analyzed 4 months ago

Ceph is a distributed network file system designed to provide excellent performance, reliability, and scalability. Ceph fills two significant gaps in the array of currently available file systems: 1. Robust, open-source distributed storage — Ceph is released under the terms of the LGPL, which ... [More] means it is free software (as in speech and beer). Ceph will provide a variety of key features that are generally lacking from existing open-source file systems, including seamless scalability (the ability to simply add disks to expand volumes), intelligent load balancing, and efficient, easy to use snapshot functionality. 2. Scalability — Ceph is built from the ground up to seamlessly and gracefully scale from gigabytes to petabytes and beyond. Scalability is considered in terms of ... [Less]

1.67M lines of code

249 current contributors

4 months since last commit

15 users on Open Hub

Activity Not Available
5.0
 
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lizardfs

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  Analyzed 4 months ago

LizardFS – Software Defined Storage is a distributed, scalable, fault-tolerant and highly available file system. It allows users to combine disk space located on several servers into a single name space which is visible on Unix-like and Windows systems in the same way as other file systems. LizardFS ... [More] makes files secure by keeping all the data in many replicas spread over all available servers. It can be used also to build an affordable storage, because it runs without any problems on commodity hardware. [Less]

131K lines of code

5 current contributors

6 months since last commit

2 users on Open Hub

Activity Not Available
5.0
 
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m-a-d-n-e-s-s

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  Analyzed about 23 hours ago

MADNESS provides a high-level environment for the solution of integral and differential equations in many dimensions using adaptive, fast methods with guaranteed precision based on multi-resolution analysis and novel separated representations. There are three main components to MADNESS. At the ... [More] lowest level is a new petascale parallel programming environment that increases programmer productivity and code performance/scalability while maintaining backward compatibility with current programming tools such as MPI and Global Arrays. The numerical capabilities built upon the parallel tools provide a high-level environment for composing and solving numerical problems in many (1-6+) dimensions. Finally, built upon the numerical tools are new applications with initial focus upon chemistry, atomic and molecular physics, material science, and nuclear structure. Please look in the wiki for more information and project activity. Getting the sourceAnonymous, read-only source checkout: svn checkout http://m-a-d-n-e-s-s.googlecode.com/svn/local/trunk m-a-d-n-e-s-s-read-onlyDevelopers, please see the wiki Subversion page for instructions. Underneath the hoodIf you would like a glimpse at what's going on under the hood have a look at this call graph generated using the Google perftools. It nicely shows how work is funneled through the task-queue and how about 50% of the time is spent in the optimized matrix routines. The calculation computed the energy and gradient for di-nitrogen using the local density approximation on a two-core Thinkpad x61t. FundingThe developers gratefully acknowledge the support of the Department of Energy, Office of Science, Office of Basic Energy Sciences and Office of Advanced Scientific Computing Research, under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory. The developers gratefully acknowledge the support of the National Science Foundation under grant 0509410 to the University of Tennessee in collaboration with The Ohio State University (P. Sadayappan). The MADNESS parallel runtime and parallel tree-algorithms include concepts and software developed under this project. The developers gratefully acknowledge the support of the National Science Foundation under grant NSF OCI-0904972 to the University of Tennessee. The solid state physics and multiconfiguration SCF capabilities are being developed by this project. The developers gratefully acknowledge the support of the Defense Advanced Research Projects Agency (DARPA) under subcontract from Argonne National Laboratory as part of the High-Productivity Computer Systems (HPCS) language evaluation project. [Less]

481K lines of code

7 current contributors

7 days since last commit

1 users on Open Hub

Moderate Activity
0.0
 
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pvfmm

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  Analyzed 4 months ago

pvfmm is a library for solving certain types of elliptic partial differential equations and n-body problems.

11.1K lines of code

1 current contributors

6 months since last commit

1 users on Open Hub

Activity Not Available
0.0
 
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AccFFT

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  Analyzed 1 day ago

A Massively Parallel FFT Library for CPU/GPU

21.9K lines of code

0 current contributors

almost 2 years since last commit

1 users on Open Hub

Very Low Activity
5.0
 
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