Simulating Arm SVE with The Gem5 Simulator

Set SVE vector length

ref in stackoverflow

Command line option

For SE:

se.py --param 'system.cpu[:].isa[:].sve_vl_se = 2'

For FS:

fs.py --param 'system.sve_vl = 2'

where the values are given in multiples of 128 bits, so 2 means length 256.

Inside the simulation (only in Full system mode):

echo VL >/proc/sys/abi/sve_default_vector_length

where ‘VL’ is in multiples of bytes, 32 means length 256 bits.