I'm building a new workstation for solving a lot of banded matrices. I only have to solve for a single solution, and I use LU decomposition of the matrix using the functino 'cgbtrf'. The matrices are around 300.000 x 1024 and upwards.
For this algorithm, is higher frequency higher CAS latency better than lower frequency lower CAS latency? I.e. is it the bandwidth or the fetch delay that will be my bottleneck?
I'm considereing 1066 MHz CAS 7 vs. 1333 MHz CAS 9 in 8 GB blocks to have room for expanding beyond my initial 64 GB.
Or will this not affect anything as it will all be bottlenecked by the CPU? (2x E5-2640).