If you are a national of a country that is a member of the United States Visa Waiver Program (VWP) then you do not need to apply for a visa to attend the symposium. If you are a national of any other country, however, you need to apply for a visa. You should do this as soon as possible as there is often a significant wait to receive a visitor visa.
Please visit the links shown to the right to check whether you are required to apply for a visa or not. If you have any doubts, please contact your local United States Consulate or Embassy. If you require a letter of invitation as part of your visa application, please email the IEEE HPCC organizers for more information. You can find contact information by hovering your mouse over the "ABOUT HPCC" menu item above.