p2.xlarge compute instances cannot be started

[abdulka]

I am using version 1.3.1 of cfncluster for the first time and successfully ran some toy clusters with c3.large compute instances. However, creating a compute instance with compute_instance_type = p2.xlarge with otherwise same settings as the c3.large instances fails with the error:
Parameter ComputeInstanceType failed to satisfy constraint: Must be a valid EC2 instance type, with support for HVM.

Possible source of the problem:
The file cfncluster/cloudformation/cfncluster.cfn.json lists p2.large as valid instance ID, but not p2.xlarge. However, there is no instance type p2.large

Many thanks for looking into this.