Hi, (using sas on Linux 6 and 7 ) I am trying to learn about the use of random number generation in the use of proc ds2 and am having a small problem. I have access to sas versions 9.4 m3 and m5 and a program that I have is producing different results. What I am trying to do is to get the same data when generating it outside of proc ds2 and inside ds2 when using multiple threads and the rand function. When using 9.4m3 the first thread's results agree with the first part of the data generated in a data step. When using 9.4m5 this does not happen. Should I be able to get the same results when using the "latest" version of 9.4 in this case? Also, it seems that the values of _threadid_ are different between the two versions. One starts at 0 and the other starts at 1. Thanks for any suggestions on what is happening here. Roger ... View more