Size of the generic memory heap.
Number of kilobytes allocated for the generic memory heap for InterSystems IRIS. This is the allocation from which the Lock table, the NLS tables, and the PID table are also allocated. For Asian locales, add one extra megabyte (1024 KB) to the total gmheap
The generic memory heap (gmheap) is sometimes known as the shared memory heap (SMH).
Range of Values
16 MB to one terabyte. The default is 37568 KB (37 MB). On IBM AIX and HP-UX, the default is 53952 KB (54 MB).