Free bulk meter flow and operations software for linux

Bandwidth Meter and Diagnostics is a Firefox extension that will automatically check whether Internet connection is working or not when a website can not be loaded, and a list of tools for network troubleshooting. Try to type a random domain name(e.g., qwqwqwq121212.com) to see what this means ...
This extension adds "Bandwidth Meter" to the Tools Menu. It performs the following tasks:
- Display your public IP address
- Display your public domain name
- Test download speed/bandwidth
- Test upload speed/bandwidth
This extension runs under any OS. If you use Windows, you could try our other Windows specific extension "Broadband Speed test and Diagnostics" that has extra features and can only run under Windows. We are creating this because we get many requests from non-windows users.

Gerris project is an Open Source Free Software library for the solution of the partial differential equations describing fluid flow.
Gerris is supported by NIWA (National Institute of Water and Atmospheric research) and by the Marsden Fund of the Royal Society of New Zealand.
The code is written entirely in C and uses both the GLib Library and the GTS Library for geometrical functions and object-oriented programming.
Main features:
- The same code base is compiled with 2D and 3D support.
- Quadtree-based (Octree in 3D) spatial discretisation with automatic and dynamic local refinement.
- Multigrid Poisson solver.
- Second-order Godunov type advection scheme.
- Solves the time-dependent incompressible variable-density Euler, Stokes or Navier-Stokes equations or the 2D shallow-water and 3D hydrostatic oceanic equations.
- Support for complex solid boundaries (automatic locally-refined mesh generation).
- Semi-implicit multigrid diffusion solver with support for complex boundaries and associated boundary conditions in 2D and 3D.
- Semi-implicit multigrid barotropic solver for the oceanic equations.
- Adaptive mesh refinement: the resolution is adapted dynamically to the features of the flow.
- Flexible and powerful specifications of parameters.
- Flexible object-oriented custom specification of initial and boundary conditions, source terms, outputs etc...
- Portable parallel support using the MPI library.
- Volume of Fluid advection scheme for interfacial flows.
Enhancements:
- Bugfixes and significant speedups in the multilevel Poisson solver.
- Support for variable mesh resolution along solid boundaries.
- Improvements have been made to the robustness of very complex solid boundaries.
- Adaptive refinement of VOF-advected tracers has been added, as well as a preliminary implementation of CSF surface tension using Renardy El Ab.
- "proper discretisation".
- Solid boundaries can be refined according to the local curvature.
- Implicit Coriolis terms work with the Navier-Stokes solver.
- There is support for "thin" 3D domains.

OS Independent Atomic Operations is a project that intends to develop an OS-independent atomic operations macro library with a common API for the C programming language as a cross-platform alternative to the uncoordinated efforts by OS developers.
As multi-core CPUs and multi-processor computer systems become more and more common, efficient synchronisation between concurrent execution units becomes more important. Atomic operations, that is operations which cannnot be interrupted, are needed to implement semaphores, reference counters and lock-free algorithms.
Operating systems generally provide atomic operation macros but there is no common API and no coordination between vendors and developers of different systems. Thus library and application developers are facing a dilemma. They can take advantage of one of the existing APIs for atomic operations but their software will then be tied to a particular operating system.
Enhancements:
- The initial release contains the Common AO API draft and a skeleton macro library.
- To complete the macros, the project will need contributors with inline assembly skills for various CPU architectures.

Smarty and MIME message integration is a PHP class library that can send e-mail messages using Smarty templates.

This package can be used to compose and send e-mail messages using Smarty templates.

It wraps around Smarty and MIME message class by Manuel Lemos, and prepares the body and headers of the messages to send.

It can set several message options at once passing an array of options values.

Currently it supports options to define HTML or text message template files, the sender, recipient, bounce and reply names and addresses, whether to send messages in plain text, HTML or both, whether to automatically wrap the message text, message character set, and the bulk precedence header to prevent that notification messages be returned due to temporary delivery errors.

Once the message options are set, the class composes and send message according to the specified option values.

Jack Meter is a basic console based DPM (Digital Peak Meter) for JACK. I wrote it for quickly checking remote signal levels, without having to run X11 to use a pretty graphical meter such as meterbridge.
Usage
Usage jack_meter [-f freqency] [-r ref-level] [-w width] [-n] [< port >, ...]
where -f is how often to update the meter per second (8)
-r is the reference signal level for 0dB on the meter
-w is how wide to make the meter (79)
-n changes mode to output meter level as number in decibels
< port > the ports to monitor (multiple ports are mixed)
Enhancements:
- uses new JACK API (and hence requires JACK version 0.100.0)
- connects multiple ports on the command line
- informational messages are new sent to STDERR
- added -n option to output level as number in decibels

JACK Meterbridge is a meterbridge for the UNIX based JACK audio system.

It supports a number of different types of meter, rendered using the SDL library and user-editable pixmaps.

Supported meters

PPM - Peak Program level Meters

Approximatly conforming to BS 6840-10. These meters are designed to indicate peak amplitude, as opposed to VU meters which are designed to indicate volume.

The scale is correct according to the standard, 4 equates to 0dB, 1 to -12, 7 to +12, and it is linear with decibels.

Ive never used a real PPM meter, so I dont know if it reacts correctly. Feedback welcome.

VU - Volume Unit meters

Conforming to BS 6840-17:1991. Real meter is larger.

These meters are designed to measure the "volume" of an audio signal, it is not as relevant to digital systems as PPM meters, but is useful if you are interfacing to analogue tape, FM broadcast equipment or want a general idea of the signal volume.

The -r flag (set reference level) is usful with these meters as it will allow you to calibrate to your DA converters. The meter is pre-adjusted so that it should allign correctly calibrated DA converters with analogue systems. If you wish to run with 0dBFS = 0dBu then use "-r 20"

DPM - Digital Peak Meter

Conforming to IEC 268-18:1995 (peak indiciator decay may not be correct).

These are meters as typically seen on digital consoles, HD recorders etc.

There are the most efficient in screen realestate and CPU use but look a bit boring.

JF - "Jellyfish" Meter (aka. Goniometer)

A jellyfish meter is a stereo scope display, it can be used to spot phase and mono compatibility problems.

Some charateristic problems can be seen, eg. a signal with a stronger left channel is seen as a shape sloping to the left [], more right slopes to the right [/], and dead mono is a vertical line [|].

The meter below the scope display indicates the degree of stereo correlation between the channels, a value of +1 means that it is perfectly mono compatible, and -1 and that the channels are in anti-phase (so they will cancel out if mixed).

If someone has better examples, please mail them to me, there are probably tutorials online.

SCO - Scope

A rendering of an oscilloscope display.

It has a basic trigger function, but there is no timebase control. It renders one pixel per sample, so it will probably be next to useless at 96KHz

Akarmi - Flow is a template-based C++ framework. Akarmi - Flow simplifies creating programs from independent processing elements that are connected by event channels.

It is currently being rewritten to use terms similar to CORBAs event service.

Installation:

cmake .
make all
make install

[testing: optional]
cd test
make test