Hi, I am unable to access the GPU on Arcticus nodes in Singularity but I have no problem accessing the GPUs on Iris nodes using the same image in Singularity. It also works on integrated GPUs (TigerLake Gen12 laptop) and on Intel DG1 systems. Here is the output: ac.sshende@arcticus10:~/scr/images> singularity run ./ecp.simg INFO: Converting SIF file to temporary sandbox... Singularity> source /opt/intel/oneapi/setvars.sh :: initializing oneAPI environment ... bash: BASH_VERSION = 5.0.17(1)-release args: Using "$@" for setvars.sh arguments: ... :: vpl -- latest :: oneAPI environment initialized :: Singularity> clinfo -l Platform #0: Intel(R) FPGA Emulation Platform for OpenCL(TM) `-- Device #0: Intel(R) FPGA Emulation Device Platform #1: Intel(R) OpenCL `-- Device #0: Intel(R) Xeon(R) Gold 6336Y CPU @ 2.40GHz Platform #2: AMD Accelerated Parallel Processing Singularity> and on Iris: ac.sshende@iris09:~/scr/images> singularity run ./ecp.simg INFO: Converting SIF file to temporary sandbox... Singularity> source /opt/intel/oneapi/setvars.sh :: initializing oneAPI environment ... bash: BASH_VERSION = 5.0.17(1)-release args: Using "$@" for setvars.sh arguments: :: ccl -- latest ... :: vpl -- latest :: oneAPI environment initialized :: Singularity> clinfo -l Platform #0: Intel(R) FPGA Emulation Platform for OpenCL(TM) `-- Device #0: Intel(R) FPGA Emulation Device Platform #1: Intel(R) OpenCL `-- Device #0: Intel(R) Xeon(R) CPU E3-1585 v5 @ 3.50GHz Platform #2: AMD Accelerated Parallel Processing Platform #3: Intel(R) OpenCL HD Graphics `-- Device #0: Intel(R) Iris(R) Pro Graphics P580 [0x193a] Singularity> The first output is missing the Platform #3. The image (from E4S.io) is in: /home/ac.sshende/scr/images/ecp.simg. Has anyone accessed the GPU in Singularity on Arcticus? Would you please point me to an image that works? Thanks, - Sameer