In compress and estimate_gs we encounter cases where we need to concatenate the basis snapshot vectors into one matrix in order to perform matrix multiplications.
The questions is whether it is better to:
use hcat and then use BLAS Level 3 operations but allocate more memory
or perform explicit matrix-vector BLAS Level 2 operations but perform less allocations
In
compressandestimate_gswe encounter cases where we need to concatenate the basis snapshot vectors into one matrix in order to perform matrix multiplications.The questions is whether it is better to:
hcatand then use BLAS Level 3 operations but allocate more memoryWe need to benchmark this for realistic cases.