How can I get all configurable attributes in attribute set?
I was looping all the attribute set then I want to display only its configurable attribute.
You should be able to get an attribute collection and filter it (based on the attribute set) - this would return you all attributes in the specified set that are configurable.
$attributes = Mage::getResourceModel('catalog/product_attribute_collection')
->setAttributeSetFilter($attributeSetId)
->addFieldToFilter("is_configurable", array("eq", "1"))
->getItems();