Thank you for your response. I apologize for not being able to give any detailed explication for the nature of my problem.
The command was entered. However, the problem was fixed. I believe its due to the Nvidia proprietary 440 driver. Initially when I built the system, I used the drivers that were supplied by nvidia and they working fine and no problems while I was running my parallel programs. However, on monday there was an update for the drivers, and after that anytime I try to implement mpirun or hwloc-ls When I removed the nvidia propitiatory driver and used the open source ones and the problem was gone and both mpirun and hwloc-ls were running with no problems. Thank you -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1893874 Title: System Complete Crash Ubuntu 20.04 for parallel procedures AMD threadripper 3960x Status in linux package in Ubuntu: Confirmed Bug description: The system will suffer a complete crash when the following commands are used: mpirun hwloc-ls This occurs immediately after the execution of any of these two commands. This started occurring only yesterday as I made a softwere update after the weekend. Before, everything was fine. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: salman 2116 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-08-10 (23 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) IwConfig: enp67s0 no wireless extensions. lo no wireless extensions. MachineType: System manufacturer System Product Name Package: linux (not installed) ProcFB: 0 nouveaudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-45-generic root=UUID=022dd10e-c967-49c2-8206-bcd0363bf6d0 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-45.49-generic 5.4.55 RelatedPackageVersions: linux-restricted-modules-5.4.0-45-generic N/A linux-backports-modules-5.4.0-45-generic N/A linux-firmware 1.187.3 RfKill: Tags: wayland-session focal Uname: Linux 5.4.0-45-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/05/2020 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1101 dmi.board.asset.tag: Default string dmi.board.name: PRIME TRX40-PRO dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1101:bd06/05/2020:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMETRX40-PRO:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1893874/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp