Hello, I'm currently trying to run a hierarchical model on my dataset using a macro written by someone else that utilizes the Proc IML statement. However, I keep running into an error that I'm trying to figure out if it's my computer or SAS that is the problem. The error I get is: "Unable to allocate sufficient memory. At least 2147483647 more bytes required." I've tried running it on my computer as well as a more powerful computer in our department (mine has 16GB ram, and the other has 32GB ram) and get the exact same error. I saw this post earlier in the year about limitations to the proc IML memory capacity and wanted to confirm that my understanding is that SAS is unable to work with larger datasets in the Proc IML statement (in 64-bit Windows 7) and that nothing can be done about it until, hopefully, SAS 9.4? I have tried the memsize option and it doesn't make any difference. The code works since I tried using a small subset of my dataset to run the analyses and with about 5% of my observations, the macro works. Thanks. ... View more