| 5 |
|
|
| 6 |
o Introduction |
o Introduction |
| 7 |
|
|
| 8 |
o Install |
This note is a guide to using the MIT General Circulation Model Ultra Verstaile |
| 9 |
tar -xvf ... |
implementation, MITgmcUV. MITgcmUV is a Fortran code that implements the |
| 10 |
cd tools |
algorithm described in Marshall et. al. 1997, Hill, Adcroft, ... |
| 11 |
genmake.dec |
The MITgcmUV implementation is designed to work efficiently on all classes |
| 12 |
cd ../bin |
of computer platforms. It can be used in both a single processor mode |
| 13 |
ln -s ../tools/Makefile.dec makefile |
and a parallel processor mode. Parallel processing can be either multi-threaded |
| 14 |
make depend |
shared memory such as that found on CRAY T90 machines or it can be multi-process |
| 15 |
make |
distributed memory. A set of "execution enviroment" support routines are |
| 16 |
setenv PARALLEL 1 |
used to allow the same numerical code to run on top of a single-process, multi-threaded |
| 17 |
../exe/barrier |
or distributed multi-process configuration. |
| 18 |
|
|
| 19 |
|
o Installing |
| 20 |
|
To setup the model on a particular computer the code tree must be created |
| 21 |
|
and appropriate compile and run scripts set up. For some platforms |
| 22 |
|
the necessary scripts are included in the release - in this case follow |
| 23 |
|
the steps below: |
| 24 |
|
|
| 25 |
|
1. Extract MITgcmUV from the downloadable archive |
| 26 |
|
tar -xvf MITgcmUV.2.0.tar |
| 27 |
|
|
| 28 |
|
2. Create platform specific make file |
| 29 |
|
For example on a Digital UNIX machine the script "genmake.dec" can |
| 30 |
|
be used as shown below |
| 31 |
|
|
| 32 |
|
cd MITgcmUV.2.0/tools |
| 33 |
|
genmake.dec |
| 34 |
|
cd ../bin |
| 35 |
|
ln -s ../tools/Makefile.dec makefile |
| 36 |
|
|
| 37 |
o Running |
3. Now create header file dependency entries |
| 38 |
|
make depend |
| 39 |
|
|
| 40 |
|
4. Compile code |
| 41 |
|
make |
| 42 |
|
|
| 43 |
eedata |
5. Run baseline test case |
| 44 |
data |
setenv PARALLEL 1 |
| 45 |
|
../exe/MITgcmUV.2.0 |
| 46 |
|
|
| 47 |
|
o Running |
| 48 |
|
|
| 49 |
|
- Input and output files |
| 50 |
|
|
| 51 |
|
Required files |
| 52 |
|
============== |
| 53 |
|
The model is configured to look for two files with fixed names. |
| 54 |
|
These files are called |
| 55 |
|
"eedata" and "data". |
| 56 |
|
The file eedata contains "execution environment" data. At present |
| 57 |
|
this consists of a specification of the number of threads to |
| 58 |
|
use in X and Y under multithreaded execution. |
| 59 |
|
|
| 60 |
- Serial execution |
- Serial execution |
| 61 |
|
|
| 71 |
- Parallel execution. Hybrid |
- Parallel execution. Hybrid |
| 72 |
|
|
| 73 |
o References |
o References |
| 74 |
|
Web sites - HP |
| 75 |
|
for doc Digital |
| 76 |
|
SGI |
| 77 |
|
Sun |
| 78 |
|
Linux threads |
| 79 |
|
CRAY multitasking |
| 80 |
|
PPT notes |
Parent Directory
| 
Revision Log
| 
Revision Graph
| 
Patch