This release of SCALE is unsupported. Please click here for the current production release.
The SCALE 6.1.3 update is available for SCALE 6.1 to provide enhanced performance in the areas detailed below. This comprehensive update includes enhancements previously released as SCALE 6.1.1 and SCALE 6.1.2. In addition to the functionality improvements provided in 6.1.1 and 6.1.2, the SCALE 6.1.3 update provides compatibility with additional Linux operating systems, but provides no additional updates in functionality. This update is recommended for all users of SCALE 6.1 and 6.1.1 and for Linux users of 6.1.2.
Segmentation Fault on Some Linux Kernels
SCALE 6.1, 6.1.1, and 6.1.2 were created and tested on RHEL4 Linux to provide backwards compatibility with older Linux operating systems. Users of newer Linux kernels have reported problems executing SCALE, with all modules stopping on a segmentation fault. Although ORNL only has a few variants of Linux for testing, the error is believed to occur on Ubuntu 11, 12, 13; Fedora 16, 17, 18; RHEL6; and CentOS 6.4.
The issue is caused by changes in how Linux handles system calls that report environment information used to populate the SCALE QA table.
SCALE 6.1.3 provides revised methods to access this information and the compiled binary executable files for 64-bit Linux systems are compatible with many more operating systems. No further enhancements to SCALE are provided with this update, so previously computed results will not vary beyond normal statistical deviations observed when updating compilers and/or operating systems.
Mac and Windows users are not affected by this update, so the Mac, Windows and 32-bit Linux executable files in SCALE 6.1.3 are the same as those distributed with SCALE 6.1.2.