MDX script execution in sql management studio generates “operation has been cancelled” message.

When I execute this mdx query:

SELECTNONEMPTY { [Measures].[All Survey Count] }ONCOLUMNS,

         NON EMPTY { ([Dim Survey].[Survey Name].[Survey Name].ALLMEMBERS * [Dim Question].[Question].[Question].ALLMEMBERS * [Dim Answer].[Answer].ALLMEMBERS ) } DIMENSIONPROPERTIES MEMBER_CAPTION, MEMBER_UNIQUE_NAME ONROWSFROM (SELECT ( { [Time].[Month Number Of Year].&[2013]&[11] } )ONCOLUMNS

FROM (SELECT ( { [Dim Room].[Hospital Name].&[ HOSPITAL NAME] } )ONCOLUMNS

         FROM [SurveyPatientSpecific]))

         WHERE ( [Dim Room].[Hospital Name].&[HOSPITAL NAME], [Time].[Month Number Of Year].&[2013]&[11] )

, process is running for few minutes and then returns this message:

Executing the query ...

Server: The operation has been cancelled because there is not enough memory available for the application. If using a 32-bit version of the product, consider upgrading to the 64-bit version or increasing the amount of memory available on the machine.

Execution complete

SQL Server is 2012 (64-bit), and result set is not big at all???

Thanks,

gb