Hi, I am trying to work on a large dataset (8 GB). This is what I have done so far. 1. Sign on to mainframe from Windows SAS 2. Uploaded the dataset to mainframe (using proc upload) Now I am trying to perform a rsubmit and get an output. I have tested the rsubmit with smaller dataset and it works efficiently. But it performs really slow  and fails when I try to run proc glimmx on this large dataset. I am seeking suggestions to improve performance. Thank you in advance. Vira ... View more