MGEN Extrude - Revision history

Prte0550: Updated location of latest version

2023-08-18T21:32:58Z

Updated location of latest version

Prte0550 at 21:29, 5 January 2023

2023-01-05T21:29:49Z

Prte0550 at 17:45, 21 September 2022

2022-09-21T17:45:39Z

Prte0550 at 17:23, 21 September 2022

2022-09-21T17:23:46Z

Prte0550: More initial info - output and afterwards oriented

2022-08-18T18:40:14Z

More initial info - output and afterwards oriented

Prte0550: Initial edits

2022-08-18T16:02:21Z

Initial edits

New page

MGEN is a tool in the meshing workflow that takes a 2D source mesh and extrudes it in the third dimension based off of user input. The tool was originally created for use on structured grids on the Boeing bump, but has since been generalized for use in unstructured setups.

== Basic Overview ==

MGEN code is stored in <code>tm3Extrude.f</code> and written in FORTRAN. The code takes in a source 2D mesh, z-coordinates to extrude between, the number of elements to populate the extrusion with, and the number of partitions to write the mesh to.

Partitioning in MGEN is simply a method to reduce the cost of initial runs of Chef, but is not a replacement for the initial configuring that Chef does (via 1-1-Chef). Parting in MGEN simply allows the first run of Chef to be in parallel (i.e. 8-8-Chef). Starting Chef from parallel is most important on large grids that would take prohibitively long to run though Chef in serial.

The most current copy of the code is available at <code>(location)</code> as of (date)

== Usage ==

Once a suitable version of <code>tm3Extrude.f</code> has been located and moved to a working directory, it first needs to be complied if this has not already been done. The FORTRAN compiler to compile <code>tm3Extrude.f</code> should be the same version that was/will be used to compile the version of Chef to be used later in the meshing pipeline in order to reduce the risk of complications.

Once a compiler version is selected and added using <code>soft add</code> or <code>module load</code> (depending on the system), it can be compiled. As an example, if using <code>gcc-6.3.0</code> on Cooley compiling would look like:

<code>
soft add +gcc-6.3.0

gfortran -03 tm3Extrude.f -o tm3Extrude
</code>

Once the code is compiled, the working directory needs to be prepared to run MGEN. MGEN needs the source 2D mesh in the form of <code>geom.crd</code> and <code>geom.cnn</code> files in the same directory as the compiled code. These source files can be produced from scratch with MATLAB for structured grids, or through the use of [[Getting Started with Simmodeler|Simmetrix]] and the [[Convert]] tool for unstructured grids.

← Older revision		Revision as of 21:32, 18 August 2023
Line 7:		Line 7:
	Partitioning in MGEN is simply a method to reduce the cost of initial runs of Chef, but is not a replacement for the initial configuring that Chef does (via 1-1-Chef). Parting in MGEN simply allows the first run of Chef to be in parallel (i.e. 8-8-Chef). Starting Chef from parallel is most important on large grids that would take prohibitively long to run though Chef in serial.		Partitioning in MGEN is simply a method to reduce the cost of initial runs of Chef, but is not a replacement for the initial configuring that Chef does (via 1-1-Chef). Parting in MGEN simply allows the first run of Chef to be in parallel (i.e. 8-8-Chef). Starting Chef from parallel is most important on large grids that would take prohibitively long to run though Chef in serial.

−	The most current copy of the code is available at <code>~~(location)~~</code> as of ~~(date)~~	+	The most current copy of the code is available at <code>/nobackup/uncompressed/Models/GustWing/2dOTS/SymmetricRoom/Mesh/MGEN_NR</code> as of January 2023. This version can read in model tags, handle multiple model regions, and arbitrary domain widths.

@@ Line 10: / Line 10: @@
-== Usage ==
+== Basic Usage ==
 Once a suitable version of <code>tm3Extrude.f</code> has been located and moved to a working directory, it first needs to be complied if this has not already been done. The FORTRAN compiler to compile <code>tm3Extrude.f</code> should be the same version that was/will be used to compile the version of Chef to be used later in the meshing pipeline in order to reduce the risk of complications.
@@ Line 25: / Line 25: @@
 Once the code is compiled, the working directory needs to be prepared to run MGEN. MGEN needs the source 2D mesh in the form of <code>geom.crd</code> and <code>geom.cnn</code> files in the same directory as the compiled code. These source files can be produced from scratch with MATLAB for structured grids, or through the use of [[Getting Started with Simmodeler|Simmetrix]] and the [[Convert]] tool for unstructured grids.
 Once the mesh files are in place, MGEN can be run with <code>./tm3Extrude</code> as usual. The code will ask for inputs for zmin, zmax, numelz, and npart. These should be entered in a single string with spaces in between the values before hitting in order to continue code execution.
 == Outputs ==
@@ Line 47: / Line 53: @@
 The outputted files from MGEN now need to be prepared for Chef, this is done via <code>matchedNodeElmReader</code>. The provided example will be for a build on Cooley.
-First, the enviroment needs to be prepared via setting <code>SIM_LICENSE_FILE</code> and <code>LD_LIBRARY_PATH</code>. Examples of this are:
+First, the environment needs to be prepared via setting <code>SIM_LICENSE_FILE</code> and <code>LD_LIBRARY_PATH</code>. Examples of this are:

← Older revision		Revision as of 17:45, 21 September 2022
Line 24:		Line 24:


−	Once the code is compiled, the working directory needs to be prepared to run MGEN. MGEN needs the source 2D mesh in the form of <code>geom.crd</code> and <code>geom.cnn</code> files in the same directory as the compiled code. These source files can be produced from scratch with MATLAB for structured grids, or through the use of [[Getting Started with Simmodeler\|Simmetrix]] and the [[~~Model~~ Convert]] tool for unstructured grids.	+	Once the code is compiled, the working directory needs to be prepared to run MGEN. MGEN needs the source 2D mesh in the form of <code>geom.crd</code> and <code>geom.cnn</code> files in the same directory as the compiled code. These source files can be produced from scratch with MATLAB for structured grids, or through the use of [[Getting Started with Simmodeler\|Simmetrix]] and the [[Convert]] tool for unstructured grids.

	Once the mesh files are in place, MGEN can be run with <code>./tm3Extrude</code> as usual. The code will ask for inputs for zmin, zmax, numelz, and npart. These should be entered in a single string with spaces in between the values before hitting in order to continue code execution.		Once the mesh files are in place, MGEN can be run with <code>./tm3Extrude</code> as usual. The code will ask for inputs for zmin, zmax, numelz, and npart. These should be entered in a single string with spaces in between the values before hitting in order to continue code execution.

← Older revision		Revision as of 17:23, 21 September 2022
Line 24:		Line 24:


−	Once the code is compiled, the working directory needs to be prepared to run MGEN. MGEN needs the source 2D mesh in the form of <code>geom.crd</code> and <code>geom.cnn</code> files in the same directory as the compiled code. These source files can be produced from scratch with MATLAB for structured grids, or through the use of [[Getting Started with Simmodeler\|Simmetrix]] and the [[Convert]] tool for unstructured grids.	+	Once the code is compiled, the working directory needs to be prepared to run MGEN. MGEN needs the source 2D mesh in the form of <code>geom.crd</code> and <code>geom.cnn</code> files in the same directory as the compiled code. These source files can be produced from scratch with MATLAB for structured grids, or through the use of [[Getting Started with Simmodeler\|Simmetrix]] and the [[Model Convert]] tool for unstructured grids.

	Once the mesh files are in place, MGEN can be run with <code>./tm3Extrude</code> as usual. The code will ask for inputs for zmin, zmax, numelz, and npart. These should be entered in a single string with spaces in between the values before hitting in order to continue code execution.		Once the mesh files are in place, MGEN can be run with <code>./tm3Extrude</code> as usual. The code will ask for inputs for zmin, zmax, numelz, and npart. These should be entered in a single string with spaces in between the values before hitting in order to continue code execution.

@@ Line 15: / Line 15: @@
 Once a compiler version is selected and added using <code>soft add</code> or <code>module load</code> (depending on the system), it can be compiled. As an example, if using <code>gcc-6.3.0</code> on Cooley compiling would look like:
 <code>
@@ Line 21: / Line 22: @@
 gfortran -03 tm3Extrude.f -o tm3Extrude
 </code>
 Once the code is compiled, the working directory needs to be prepared to run MGEN. MGEN needs the source 2D mesh in the form of <code>geom.crd</code> and <code>geom.cnn</code> files in the same directory as the compiled code. These source files can be produced from scratch with MATLAB for structured grids, or through the use of [[Getting Started with Simmodeler|Simmetrix]] and the [[Convert]] tool for unstructured grids.