Along with the parameters discussed above, is a special type of parameter known as the system parameter. These parameters are program dependent, but must be known at compile time. Therefore, system parameters must have default values and are not read from parameter files. Currently system parameters must be scalars. There is one predefined system parameter which specifies the memory size for FORTRAN programs in doubles. Its default value is 2000000. An example statement follows:
system parameter int memsiz := 100000
System parameters are placed in a file called sys_param.inc.