Rob, If you run with: OMP_TARGET_OFFLOAD=DISABLED Does the code still segfault? From: "Aulwes, Rob Tuan" <[email protected]> Date: Friday, July 9, 2021 at 4:40 PM To: Nichols Romero <[email protected]>, "[email protected]" <[email protected]> Subject: Re: [EXTERNAL] Re: [Ecp-aurora-sdk-discuss] segfault on yarrow Got same runtime segfault and no core dumps. Running interactively on articus. From: "Romero, Nichols A." <[email protected]> Date: Friday, July 9, 2021 at 3:39 PM To: "Aulwes, Rob Tuan" <[email protected]>, "[email protected]" <[email protected]> Subject: Re: [EXTERNAL] Re: [Ecp-aurora-sdk-discuss] segfault on yarrow No, just submit it to the articus queue. From: "Aulwes, Rob Tuan" <[email protected]> Date: Friday, July 9, 2021 at 4:16 PM To: Nichols Romero <[email protected]>, "[email protected]" <[email protected]> Subject: Re: [EXTERNAL] Re: [Ecp-aurora-sdk-discuss] segfault on yarrow Will I need to recompile for articus? From: "Romero, Nichols A." <[email protected]> Date: Friday, July 9, 2021 at 3:15 PM To: "Aulwes, Rob Tuan" <[email protected]>, "[email protected]" <[email protected]> Subject: [EXTERNAL] Re: [Ecp-aurora-sdk-discuss] segfault on yarrow Rob, Can you try it on Articus instead? Yarrow uses double-precision emulation and so I can imagine something easily going off the rails. Articus natively supports double-precision. From: Ecp-aurora-sdk-discuss <[email protected]> on behalf of "Aulwes, Rob Tuan via Ecp-aurora-sdk-discuss" <[email protected]> Reply-To: "Aulwes, Rob Tuan" <[email protected]> Date: Friday, July 9, 2021 at 4:10 PM To: "[email protected]" <[email protected]> Subject: [Ecp-aurora-sdk-discuss] segfault on yarrow Hi, Trying to run MPAS-Ocean on yarrow using OpenMP offloading. Getting a runtime segfault, but don’t get any core dumps. I’ve tried setting ‘ulimit unlimited’, but still no core dumps. How do I generate core dumps or is there an MPI-compatible debugger available on yarrow? I didn’t see totalview or ddt. Thanks,Rob