The -iqnumbercpus switch on the SAP Sybase IQ startup command specifies the number of CPUs available to IQ, overriding the physical number of CPUs for resource planning purposes.
The value of the parameter defaults to the total number of CPUs, but the range of available values is 1 through 512.
With Intel® CPUs and hyperthreading enabled. Set -iqnumbercpus to the number of CPUs available.
Where an operating system utility has been used to restrict SAP Sybase IQ to a subset of the CPUs within the machine