Intel compilers compilervars.csh does not work with CSH on Ubuntu

Published: 04/27/2012, Last Updated: 04/27/2012

Problem : Soucing compilervars.csh under CSH on Ubuntu distribution does not work.  Error is "ERROR: Unknown switch ''. Accepted values: ia32, intel64

Environment :  Ubuntu linux, all known versions, users with csh as their default shell, csh coming from /etc/alternatives/csh. 
This does not affect any other known linux distribution, including Debian.

Root Cause : The /etc/alternatives/csh shell interpreter is, for unknown reasons, incompatible with Intel's compilervars.csh

Resolution : Ubuntu CSH users are encouraged to change their default shell to TCSH.  This is a superset of CSH and does not exhibit any issues with Intel's

Product and Performance Information


Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804