User: knarf Date: 2011/11/14 12:53 AM
Modified: / ET.tex
Log: cosmetics in Simfactory section
File Changes:
Directory: / ============
File [modified]: ET.tex Delta lines: +12 -12 =================================================================== --- ET.tex 2011-11-14 06:48:06 UTC (rev 202) +++ ET.tex 2011-11-14 06:53:27 UTC (rev 203) @@ -516,10 +516,10 @@ their hardware configuration, available software, directory structure, queueing system, queuing policy, and many other user-visible properties. In addition, the system architectures and user interfaces -offered by supercomputers are very different to those offered by +offered by supercomputers are very different from those offered by laptops or workstations. This makes performing large, -three-dimensional time-dependent simulations a complex and time -consuming task with a steep learning curve. However, most of these +three-dimensional time-dependent simulations a complex, time-consuming +and difficult task. However, most of these differences are only superficial, and the basic capabilities of supercomputers are very similar; most of the complexity of managing simulations lies in menial tasks that require no physical or numerical @@ -528,16 +528,16 @@ The Simulation Factory~\cite{Thomas:2010aa, SimFactory:web} offers a set of abstractions for the tasks necessary to set up and successfully complete numerical simulations based on the {\tt Cactus} framework. These -abstractions hide tedious low-level management operations, they -capture ``best practices'' of experienced users, and they create a log +abstractions hide tedious low-level management operations, +capture ``best practices'' of experienced users, and create a log trail ensuring repeatable and well-documented scientific results. -Using these abstractions, most operations are much simplified, many +Using these abstractions, most operations are simplified and many types of potentially disastrous user errors are avoided, allowing different supercomputers to be used in a uniform manner.
-Using the Simulation Factory, we are able to offer a -tutorial for the Einstein Toolkit~\cite{EinsteinToolkit:web} that lets -new users download, configure, build, and run full simulations of the +Using the Simulation Factory, we offer a +tutorial for the Einstein Toolkit~\cite{EinsteinToolkit:web} that teaches +new users how to download, configure, build, and run full simulations of the coupled Einstein/relativistic hydrodynamics equations on a supercomputer with a few simple commands. Users need no prior knowledge about either the details of the architecture of a @@ -551,12 +551,12 @@ %RH: any of the itemize, decription, enumerate environments indents its body %by the same amount as \parindent \begin{description} -\item[Remote Access] The actual access commands and authentication +\item[1. Remote Access.] The actual access commands and authentication methods differ between systems, as do the user names that a person has on different systems. Some systems are not directly accessible, and one must log in to a particular ``trampoline'' server first. The Simulation Factory hides this complexity. -\item[Configuring and Building] Building {\tt Cactus} requires certain +\item[2. Configuring and Building.] Building {\tt Cactus} requires certain software on the system, such as compilers, libraries, and build tools. Many systems offer different versions of these, which may be installed in non-default locations. Finding a working combination @@ -566,7 +566,7 @@ this information. In many cases, this allows people to begin to use a new machine in a very short time with just a few, simple commands. -\item[Submitting and Managing Simulations] Many simulations run for +\item[3. Submitting and Managing Simulations.] Many simulations run for days or weeks, requiring frequent checkpointing and job re-submission because of short queue run-time limits. Simple user errors in these menial tasks can potentially destroy weeks of