Vmware dynamic or fixed CPU

What do you mean dynamic vCPUs? Are you talking about being able to add CPU hot? If this is what you mean see this link

http://pubs.vmware.com/vsphere-4-esx-vcenter/index.jsp?topic=/com.vmware.vsphere.vmadmin.doc_41/vsp_vm_guide/configuring_virtual_machines/t_change_cpu_hotplug_settings.html

vCPU are dynamic, meaning the VMware Hypervisor scheduler selects the Core of the physical host CPU to use.

See here
http://www.vmware.com/resources/techresources/10131

see here
http://www.gabesvirtualworld.com/how-too-many-vcpus-can-negatively-affect-your-performance/

http://www.zdnet.com/virtual-cpus-the-overprovisioning-penalty-of-vcpu-to-pcpu-ratios-4010025185/

also there is a document here about the CPU scheduler

www.vmware.com/files/pdf/perf-vsphere-cpu_scheduler.pdf

How can I make them static or is this possible?

You can make them static, by fixing a VM to a specific core, changing affinity, but why would you want to do this, when we pay lots of money to VMware and let the Hypervisor do the donkey work, of moving the VM from Core to Core for us?

Edit the CPU Options in the VM, change the Affinity to a specific core.

Thanks this answers my questions and shows where to make the changes