cpu utilization and balanced in linux

Normally the operating system will handle balancing the load between CPUs by itself as far as possible; as it isn't doing this here I wouldn't be surprised if it is mainly running one big task that isn't multi-core ready. If this is the case there's little you can do without switching the program or alternatively updating it.

You could try using a tool like Cgroups which allows you to modify the resources attributed to various tasks; I have never used this myself though, so I can't say for sure if it will work or how to set it up. I'm sure you can find instructions on that online though.