All Manuals > LispWorks User Guide and Reference Manual > 23 LispWorks' Operating Environment > 23.6 Startup relocation > 23.6.3 Startup relocation of 64-bit LispWorks

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On old Linux systems LispWorks (64-bit) for Linux has range 192GB, ending at #x7000000000 , because old Linux systems cannot map above #x8000000000 and put the dynamic libraries just below that limit (at least in some configurations). Since LispWorks uses the address space sparsely, it will run out of memory with less virtual memory, probably around 150GB to 160GB. If more memory is required, the range can be extended downwards, and possibly some distance upwards too. If other software uses memory in the range from #x4000000000 to #x7000000000 , LispWorks should be relocated (potentially just by decreasing the range) to avoid memory clashes.

Modern Linux systems have a much larger address space and the default size of the LispWorks range is #x4000000000 (4TB).

LispWorks User Guide and Reference Manual - 21 Dec 2011