• 2019 Update 3
  • 03/07/2019
  • Public Content
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Contents

Syntax
ALTSTACK [on|off]
Variable
VT_ALTSTACK
Description
Handling segfaults due to a stack overflow requires that the signal handler runs on an alternative stack, otherwise it will just segfault again, causing the process to terminate.
Because installing an alternative signal handler affects application behavior, it is normally not done. If it is known to work, it is enabled only for MPI correctness checking.

Product and Performance Information

1

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