Updated Makefile to allow compilation on login node which has a different architecture than genoa nodes; make compiler flags for AOCC and OpenMPI 4 the default.

This reverts commit c70931e1.

Avoid remark: floating point conversion changes vector width. Mixed floating point precision requires an up/down cast that will negatively impact performance. [-Rpass-analysis=loop-vectorize]
Add some prama omp simd

Avoid remark: floating point conversion changes vector width. Mixed floating point precision requires an up/down cast that will negatively impact performance. [-Rpass-analysis=loop-vectorize]

Added option to set a seed value (RAND_SEED) for the random shot selection to choose the same random shots for testing.