update documentation for hipFFT

ginkgo-project · Sep 17, 2021 · fb244f0 · fb244f0
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diff --git a/INSTALL.md b/INSTALL.md
@@ -167,6 +167,8 @@ imposed by the `HIP` tool suite. The variables are the following:
   `hipBLAS` installation path. The default value is `${ROCM_PATH}/hipblas`.
 + CMake `-DHIPSPARSE_PATH=` or environment `export HIPSPARSE_PATH=`: sets the
   `hipSPARSE` installation path. The default value is `${ROCM_PATH}/hipsparse`.
++ CMake `-DHIPFFT_PATH=` or environment `export HIPFFT_PATH=`: sets the
+  `hipFFT` installation path. The default value is `${ROCM_PATH}/hipfft`.
 + CMake `-DROCRAND_PATH=` or environment `export ROCRAND_PATH=`: sets the
   `rocRAND` installation path. The default value is `${ROCM_PATH}/rocrand`.
 + CMake `-DHIPRAND_PATH=` or environment `export HIPRAND_PATH=`: sets the

diff --git a/README.md b/README.md
@@ -57,6 +57,7 @@ The Ginkgo HIP module has the following __additional__ requirements:
 *    the HIP, hipBLAS, hipSPARSE, hip/rocRAND and rocThrust packages compiled with either:
     * _AMD_ backend (using the `clang` compiler)
     * _9.2 <= CUDA < 11_ backend
+* if the hipFFT package is available, it is used to implement the FFT LinOps.
 
 The Ginkgo DPC++ module has the following __additional__ requirements: