<html> <head> <style> .hmmessage P { margin:0px; padding:0px } body.hmmessage { FONT-SIZE: 9pt; FONT-FAMILY:Tahoma } </style> </head> <body class='hmmessage'> Hi, I have same problem before, now I  use clustertool jobsplitter to generate many random seeds. And then write in my .mac: /gate/output/root/setSaveRndmFlag 0 /random/resetEngineFrom  {RandomSeedN}.rndm So in this way I can give every .mac different seeds Hope this can help. Zhi LI > > Dear Gaters: > > I've met a problem: > > I'd like to obtain gateHits data with large quantity. But the data > getting from different files are the same if the same .mac file is used. > I heard that different random seeds should be set to solve that problem. > But I don't know how. > > I'll be appreciate if you can give any help. </body> </html>