diff --git a/README.md b/README.md
index 6c56b0fde..8ee1e9c80 100644
--- a/README.md
+++ b/README.md
@@ -241,8 +241,6 @@ Running
 -------
 No extra run-time options are needed to run the GPU enabled ecWam. Please note that this means that if ecWam is built
 using the `--with-loki` and `--with-acc` bundle arguments, it will necessarily be offloaded for GPU execution.
-For multi-GPU runs, the number of GPUs maps to the number of MPI ranks. Thus multiple GPUs can be requested by
-launching with multiple MPI ranks. The mapping of MPI ranks to GPUs assumes at most 4 GPUs per host node.
 
 Environment variables
 ---------------------
diff --git a/src/ecwam/CMakeLists.txt b/src/ecwam/CMakeLists.txt
index eaa457086..5fc40088b 100644
--- a/src/ecwam/CMakeLists.txt
+++ b/src/ecwam/CMakeLists.txt
@@ -269,7 +269,6 @@ list( APPEND ecwam_srcs
   w_mode_st.F90
   w_pdf.F90
   w_pmax.F90
-  wam_init_gpu_mod.F90
   wam_multio_mod.F90
   wam_nproma.F90
   wam_sorti.F90
diff --git a/src/ecwam/wam_init_gpu_mod.F90 b/src/ecwam/wam_init_gpu_mod.F90
deleted file mode 100644
index 2c16e0617..000000000
--- a/src/ecwam/wam_init_gpu_mod.F90
+++ /dev/null
@@ -1,30 +0,0 @@
-! (C) Copyright 1989- ECMWF.
-!
-! This software is licensed under the terms of the Apache Licence Version 2.0
-! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
-! In applying this licence, ECMWF does not waive the privileges and immunities
-! granted to it by virtue of its status as an intergovernmental organisation
-! nor does it submit to any jurisdiction.
-!
-
-       MODULE WAM_INIT_GPU_MOD
-       CONTAINS
-          SUBROUTINE WAM_INIT_GPU(IRANK)
-#ifdef _OPENACC
-             USE OPENACC
-#endif
-             USE PARKIND_WAVE, ONLY : JWIM
-             IMPLICIT NONE
- 
-             INTEGER(KIND=JWIM), INTENT(IN) :: IRANK
-             INTEGER :: DEVTYPE, DEVNUM, DEV
-        
-        
-#ifdef _OPENACC
-             DEVTYPE = ACC_GET_DEVICE_TYPE()
-             DEVNUM = ACC_GET_NUM_DEVICES(DEVTYPE)
-             DEV = MOD(IRANK-1, DEVNUM)
-             CALL ACC_SET_DEVICE_NUM(DEV, DEVTYPE)
-#endif
-          END SUBROUTINE WAM_INIT_GPU
-       END MODULE WAM_INIT_GPU_MOD
diff --git a/src/ecwam/wvwaminit.F90 b/src/ecwam/wvwaminit.F90
index 811922e68..1b31d88b2 100644
--- a/src/ecwam/wvwaminit.F90
+++ b/src/ecwam/wvwaminit.F90
@@ -47,7 +47,6 @@ SUBROUTINE WVWAMINIT (LLCOUPLED, IULOG, LLRNL,                    &
 
       USE MPL_MODULE, ONLY : MPL_MYRANK, MPL_NPROC
       USE YOMHOOK  , ONLY : LHOOK,   DR_HOOK, JPHOOK
-      USE WAM_INIT_GPU_MOD, ONLY : WAM_INIT_GPU
 
 ! ----------------------------------------------------------------------
       IMPLICIT NONE
@@ -89,10 +88,6 @@ SUBROUTINE WVWAMINIT (LLCOUPLED, IULOG, LLRNL,                    &
       IRANK = MPL_MYRANK()
       NPROC = MPL_NPROC()
 
-#if defined(WAM_GPU)
-      CALL WAM_INIT_GPU(IRANK)
-#endif
-
 !     STANDARD OUTPUT UNIT
 !     --------------------