@techreport {1461, title = {FFT-ECP API and High-Performance Library Prototype for 2-D and 3-D FFTs on Large-Scale Heterogeneous Systems with GPUs}, journal = {ECP Milestone Report}, number = {FFT-ECP STML13-27}, year = {2020}, note = {revision 01-2020}, month = {2020-01}, publisher = {Innovative Computing Laboratory, University of Tennessee}, type = {ECP WBS 2.3.3.13 Milestone Report}, author = {Stanimire Tomov and Alan Ayala and Azzam Haidar and Jack Dongarra} }