[Halld-offline] SIMD Troubles

[Matthew Shepherd]

Hi all,

It seems that the BMS system doesn't properly understand our SIMD capabilities on the machines here at Indiana.  If we do a default build, then we get a segmentation fault at the first DVector2 operation.  If we build with DISABLE_SIMD=1 then this segfault is avoided.

This seems to point to two causes:

(1) there is a bug in the SIMD implementation of DVector2
(2) our machines are not capable of handling current SIMD code

(1) seems unlikely since other people are using the code.  Assuming it is (2), how do we properly diagnose and fix it?

-Matt