HI, I am a graduate student doing research on algorithms for low power synthesis. I am trying to use sis for power estimation but I face the following problems 1. power_estimate does not seem to work. I gives a segmentation fault 2. I want to call sis from a C program. So I need to use the command sis -f to execute commands from a file. But this also doesn't seem to work. When I type sis -f , it just goes into an infinite loop returning nothing Kindly help me out with these Regards, Ganesh