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by tom_b 4454 days ago
Ck out Arthur Whitney's abridged manual for fun:

http://kx.com/q/d/kdb+.htm

For using the 32-bit version (from Limits):

22 Limits

Each database runs in memory and/or disk map-on-demand -- possibly partitioned. There is no limit on the size of a partitioned database but on 32-bit systems the main memory OLTP portion of a database is limited to about 1GB of raw data, i.e. 1/4 of the address space. The raw data of a main memory 64bit process should be limited to about 1/2 of available RAM.