Windows (32-bit)

Hardware Platform

*disk space:

User disk space requirements can vary significantly depending on the size of input and output data files for a particular EMA3D problem, and the amount of space required for additional data files that may be produced in the course of pre- or post-simulation analysis. Input and output data file size can vary for the same project, depending on length of simulation, number of output probes and time-spacing of output data points, and other factors. 25 GB should give you enough space for data files for a few modest EMA3D problems; more should be allowed if you intend to do multiple simulation runs or variations on a problem, a problem with a particularly large amount of output data, or if you wish to store data files for many EMA3D problems.

**system memory:

The recommended system memory is a very rough guideline that is intended to cover most situations. The system memory requirement for EMA3D is highly project-dependent. It depends on the memory image size of a particular EMA3D problem, which can vary significantly depending on the nature of the problem and the project requirements, particularly problem space size and required spatial resolution. The EMA3D software imposes no upper limit on the possible memory image size of a problem; on the other hand, some useful EMA3D problems can be solved with only a few kilobytes of memory.

If you are familiar with Finite Difference analysis, you can estimate the memory requirement for your problem of interest, if you have an idea of the problem space size and spatial resolution you need for your project. The problem space size and spatial resolution give you the number of Finite Difference cells in each coordinate direction. Once you determine this, you can use the following formula to estimate the EMA3D problem memory image size for your project:

memory image size in bytes = 24 * (mx) * (my) * (mz)

where

mx = number of cells in the x-direction
my = number of cells in the y-direction
mz = number of cells in the z-direction

This formula is based on the fact that, for each Finite Difference cell, EMA3D stores a 4-byte real number for each of six field values: x-, y- and z-components of electric and magnetic field values. The formula should give you an estimate of memory image size to within 10% to 20% accuracy (other factors such as using certain boundary conditions can increase the memory image size by up to 10% to 20%).

For a more detailed discussion of memory requirements, refer to "Section 1.2.7 Computer Resources" in the EMA3D Manual #4 "Project Objectives Manual" of the EMA3D manual set.

Note that these are memory requirement suggestions for the EMA3D problem memory image size by itself, and does not include memory required by the operating system. For best performance, memory requirements for the operating system and other system software should also be taken into account, as well as memory requirements for other applications you may be running.