We used a FEA model with 448k nodes and 282k elements for *Random response simulation. In eigenvalue extraction step, AMS solver and Lanczos solver are used to compare the simulation efficiency, all other settings are identical. By using Lanczos solver, the simulation time of eigenvalue extraction is 30min and 16min in random response step. But by AMS solver, the simulation time is 6min and 200 min. In .msg file, it shows that system time is very long. Has anyone met the same problem?

Abaqus ​​​​​​​