Leginon

h1. Minimum Requirements and current NRAMM setup

h2. Electron Microscope with its Controling Computer (Windows)

Microscope need to have the capacity for external control and network connected (See [[Network Configuration]] section for details on that.  Here are known examples of Leginon implementation:

* FEI: Tecnai, Polara, Titan Krios with TEM Scripting

* JEOL: 1230, JEM3100FSC

h2. CCD

Gatan,  Tietz, Eagle-minimal 1kx1k; NRAMM 4kx4k

h2. A Second Computer Running Linux (CentOS at NRAMM)

At NRAMM, we separate the three activities into different computers that serve about 15 people with three microscopes that could be running at the same time.  All scopes share the same database, web server, and file server.  Each microscope has its own processing computer.

*We no longer consider using a computer with Windows PC as the second computer as an option.  A group tried it and it could not handle the memory demand*

h3. CPU

Minimal 2 GHz;

NRAMM:

* Processing server: Single quad core (Intel Xeon E5540 2 2.53GHz).  One computer per microscope.

* Database server: Duo quad core (2.6GHz)

* Web server: Single quad core (Intel Xeon 3.00GHz)

h3. RAM

The whole system with its image processing, database query and web serving, needs a lot of memory.  Realistically, you will need minimal of 4GB memory for all processing+database+web server activities for one microscope operation with 4k camera that serves two persons (one operates the scope, one just look at the images from the web viewers) at the same time.  We know of at least one successful daily usage at this configuration.  For 2k camera, an all-in-one computer with 3GB memory has also been used successfully.  If you are buying a new computer, get at least 6GB memory would be a good idea. 

At NRAMM, to serve about 15 people viewing images and with three microscopes that could be running at the same time:

* Processing server: 4GB physical memory and 2 GB swap for years, and now at 6GB and 6GB, respectively.  One computer per microscope

* Database server: 16GB memory and 18GB swap.

* Web server: 4GB memory and 6GB swap.

h3. Hard drive

10 GB for the softwares and maybe a few hours worth of data collection. Much larger

for routine use. NRAMM 45Tb and growing although some are archived.

h3. Network connection speed

100 Mbps might be possible; NRAMM 1 Gbps

h2. Leginon system components developed at Leginon home

Leginon Home:  "http://www.leginon.org/":http://www.leginon.org/

h2. Supporting packages and programs available through internet or your Linux distribution

There are minimum of ten packages or single programs, some of them are included in your

Linux distribution.

h2. Leginon supporting programs available upon request

adaexp.exe that is required if film exposure is to be made through Leginon on FEI Tecnai

machines is available by request. Please contact Max Otten: (mto at nl.feico.com)

and let him know what version of the Tecnai user interface you are using.

______

[[Graphical User Interface|< Graphical User Interface]] | [[Getting Started|Getting Started >]]

______