https://community.intel.com/t5/OpenCL-for-CPU/How-to-disable-auto-vectorization/m-p/991175#M2733 Do you want to disable just auto-vectorization or all optimizations? You can use -cl-opt-disable to disable all optimizations (incl. auto-vec). From the SDK documentation, vec_type_hint doesnt disable auto-vectorization, instead it tells the vectorization module to apply transformation to a particular type. Thanks, Raghu Wed, 12 Sep 2012 17:36:51 GMT Raghupathi_M_Intel 2012-09-12T17:36:51Z https://community.intel.com/t5/OpenCL-for-CPU/How-to-disable-auto-vectorization/m-p/991174#M2732 <P>How do you disable auto-vectorization? Meaning that even when I declare typen (float4, int4, etc) variables, the compiler won't do any implicit vectorazation for the code, since what I've found in this thread:<BR /><A href="http://software.intel.com/en-us/forums/topic/281812" target="_blank">http://software.intel.com/en-us/forums/topic/281812</A></P> <P>seems like declaring __attribute__((vec_type_hint(float))) does not do anything such..</P> Wed, 12 Sep 2012 08:42:29 GMT https://community.intel.com/t5/OpenCL-for-CPU/How-to-disable-auto-vectorization/m-p/991174#M2732 ardiyu07 2012-09-12T08:42:29Z https://community.intel.com/t5/OpenCL-for-CPU/How-to-disable-auto-vectorization/m-p/991175#M2733 Do you want to disable just auto-vectorization or all optimizations? You can use -cl-opt-disable to disable all optimizations (incl. auto-vec). From the SDK documentation, vec_type_hint doesnt disable auto-vectorization, instead it tells the vectorization module to apply transformation to a particular type. Thanks, Raghu Wed, 12 Sep 2012 17:36:51 GMT https://community.intel.com/t5/OpenCL-for-CPU/How-to-disable-auto-vectorization/m-p/991175#M2733 Raghupathi_M_Intel 2012-09-12T17:36:51Z