Specifications

CHAPTER 1: INSTALLING THE QUARTUS II SOFTWARE
USING THE 64-BIT VERSION OF THE QUARTUS II SOFTWARE
ALTERA CORPORATION INSTALLATION & LICENSING FOR LINUX WORKSTATIONS ■ 10
You are guided through the installation procedure.
4. Unmount the DVD-ROM drive. For information about unmounting
DVD-ROMs on Linux workstations, refer to “Mounting and
Unmounting DVD-ROMs” on page 47 in Appendix B.
Using the 64-bit Version of the
Quartus II Software
If your project requires addressability of computer memory greater than
4 GB for command-line executables, such as quartus_map, quartus_fit,
quartus_sta, quartus_tan, and quartus_cdb, you can use a 64-bit version of
the Quartus II software for Linux workstations. Compiling designs with the
64-bit version of the Quartus II software requires more system memory. You
may notice an increase in compilation times if there is not sufficient physical
memory to accommodate the increased memory usage. You can mitigate
this effect by increasing the total physical memory on the system.
When you install the Quartus II software, the 64-bit version of the Quartus II
software is also installed automatically.
To turn on 64-bit processing in the Quartus II software, use one of the
following methods:
■ To turn on 64-bit processing with the QUARTUS_64BIT environment
variable, refer to “QUARTUS_64BIT” on page 35.
■ To turn on 64-bit processing with the --64bit option, refer to “Other
Workstation Configuration Information” on page 36.