PART IV: MODEL EXECUTION ON THE CONTROL DATA 

 CORPORATION COMPUTING SYSTEM 



General Comments 



62. The RCPWAVE model can be run in a remote batch mode on the Control 

 Data Corporation (CDC) computing system. Batch jobs comprised of job control 

 language (JCL) allow users to instruct the computer to perform a series of 

 tasks including file manipulation, compilation, and execution. RCPWAVE can be 

 run on two CDC computers, the CYBER 865 and CYBER 205. Costs are less expen- 

 sive on the CYBER 865 machine (cost comparisons will be given in Part V); how- 

 ever, available memory within this computer limits its use to applications in- 

 volving fewer than 9,025 grid cells. The CYBER 205 has more available memory, 

 but it is more expensive to use. It is recommended that users restrict their 

 use of the CYBER 205 to model applications where the total number of grid 

 cells exceeds 9,025. 



63. JCL used to run the wave model on the CYBER 865 differs from that 

 used to run it on the CYBER 205. The next two sections explain CYBER 865 JCL 

 and CYBER 205 JCL, respectively. Then the following procedures are explained: 

 submitting batch jobs on both machines, checking job status, and accessing job 

 output. The last two sections give a general description of necessary input 

 files and all output files which are generated in the course of job execution. 

 Part V of the text covers examples of actual applications of RCPWAVE run on 

 both CDC machines, and it includes specific examples of the aforementioned 

 files. 



64. It is essential for the user to be familiar with XEDIT* or another 

 text editor available on the CDC system. This knowledge is required in order 

 to make any changes to the JCL files or to examine an output file in a text 

 editor mode. The text editor also is required to create input data files. A 

 limited knowledge of the "UPDATE"* method for making changes to the model 

 source code also is recommended. Discussion concerning modifications to the 

 source code and examples documenting this procedure are given in subsequent 

 sections. 



* Cybernet services manuals are available from CDC titled "XEDIT, Extended 

 Text Editor," Manual No. 76071000C, and "UPDATE, Version 1 Reference 

 Manual," Manual No. 60449900B. 



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