How to run with 2 GPU

[ztdepztdep]

I have sucessfully runn my channe flow with 1 GPU, i have 2 GPU cards installed on my pc. when i run it with 2 cuda, it feedback the following errors.
could you pelase help me out.

Aborting in /home/ztdep/Downloads/nekRS-26.0/src/platform/device.cpp:L163 wrapperLoadKernel: Cannot load kernel <gatherScatter_float_add> -------------------------------------------------------------------------- MPI_ABORT was invoked on rank 1 in communicator MPI_COMM_WORLD Proc: [[45606,1],1] Errorcode: 1 NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes. You may or may not see output from other processes, depending on exactly when Open MPI kills them. -------------------------------------------------------------------------- -------------------------------------------------------------------------- prterun has exited due to process rank 1 with PID 0 on node localhost calling "abort". This may have caused other processes in the application to be terminated by signals sent by prterun (as reported here).