Name | Theory_2843-4102779-525_0 |
Workunit | 230823496 |
Created | 14 Mar 2025, 18:00:50 UTC |
Sent | 15 Mar 2025, 0:56:46 UTC |
Report deadline | 26 Mar 2025, 0:56:46 UTC |
Received | 15 Mar 2025, 1:03:08 UTC |
Server state | Over |
Outcome | Computation error |
Client state | Compute error |
Exit status | 1 (0x00000001) Unknown error code |
Computer ID | 10871429 |
Run time | 18 sec |
CPU time | |
Validate state | Invalid |
Credit | 0.00 |
Device peak FLOPS | 1.00 GFLOPS |
Application version | Theory Simulation v300.60 (vbox64_theory) windows_x86_64 |
Peak working set size | 6.97 MB |
Peak swap size | 1.79 MB |
Peak disk usage | 1.07 MB |
<core_client_version>8.0.2</core_client_version> <![CDATA[ <message> Incorrect function. (0x1) - exit code 1 (0x1)</message> <stderr_txt> 2025-03-15 00:59:17 (17860): vboxwrapper version 26208 2025-03-15 00:59:17 (17860): BOINC client version: 8.0.2 2025-03-15 00:59:18 (17860): Detected: VirtualBox VboxManage Interface (Version: 7.0.6) 2025-03-15 00:59:18 (17860): Detected: Heartbeat check (file: 'heartbeat' every 1200.000000 seconds) 2025-03-15 00:59:18 (17860): Successfully copied 'init_data.xml' to the shared directory. 2025-03-15 00:59:18 (17860): Successfully copied 'input' to the shared directory. 2025-03-15 00:59:19 (17860): Create VM. (boinc_96284cf1d8204c5f, slot#0) 2025-03-15 00:59:19 (17860): Setting Memory Size for VM. (630MB) 2025-03-15 00:59:19 (17860): Setting CPU Count for VM. (1) 2025-03-15 00:59:20 (17860): Setting Chipset Options for VM. 2025-03-15 00:59:20 (17860): Setting Graphics Controller Options for VM. 2025-03-15 00:59:20 (17860): Setting Boot Options for VM. 2025-03-15 00:59:20 (17860): Setting Network Configuration for NAT. 2025-03-15 00:59:21 (17860): Enabling VM Network Access. 2025-03-15 00:59:21 (17860): Disabling USB Support for VM. 2025-03-15 00:59:21 (17860): Disabling COM Port Support for VM. 2025-03-15 00:59:22 (17860): Disabling LPT Port Support for VM. 2025-03-15 00:59:22 (17860): Disabling Audio Support for VM. 2025-03-15 00:59:22 (17860): Disabling Clipboard Support for VM. 2025-03-15 00:59:22 (17860): Disabling Drag and Drop Support for VM. 2025-03-15 00:59:23 (17860): Adding storage controller(s) to VM. 2025-03-15 00:59:23 (17860): Adding virtual disk drive to VM. (Theory_2025_01_16_prod.vdi) 2025-03-15 00:59:25 (17860): Adding VirtualBox Guest Additions to VM. 2025-03-15 00:59:25 (17860): Adding network bandwidth throttle group to VM. (Defaulting to 1024GB) 2025-03-15 00:59:25 (17860): forwarding host port 50136 to guest port 80 2025-03-15 00:59:26 (17860): Enabling remote desktop for VM. 2025-03-15 00:59:26 (17860): Required extension pack not installed, remote desktop not enabled. 2025-03-15 00:59:26 (17860): Enabling shared directory for VM. 2025-03-15 00:59:27 (17860): Starting VM using VBoxManage interface. (boinc_96284cf1d8204c5f, slot#0) 2025-03-15 00:59:27 (17860): Error in start VM for VM: 1 Command: VBoxManage -q startvm "boinc_96284cf1d8204c5f" --type headless Output: VBoxManage.exe: error: The virtual machine 'boinc_96284cf1d8204c5f' has terminated unexpectedly during startup with exit code 1 (0x1). More details may be available in 'C:\ProgramData\BOINC\slots\0\boinc_96284cf1d8204c5f\Logs\VBoxHardening.log' VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component MachineWrap, interface IMachine Waiting for VM "boinc_96284cf1d8204c5f" to power on... 2025-03-15 00:59:27 (17860): VM failed to start. 2025-03-15 00:59:27 (17860): Could not start 2025-03-15 00:59:27 (17860): ERROR: VM failed to start 2025-03-15 00:59:27 (17860): Powering off VM. 2025-03-15 00:59:27 (17860): Deregistering VM. (boinc_96284cf1d8204c5f, slot#0) 2025-03-15 00:59:27 (17860): Removing network bandwidth throttle group from VM. 2025-03-15 00:59:27 (17860): Removing VM from VirtualBox. Hypervisor System Log: 00:00:08.225750 ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 1 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0 00:00:08.226036 Saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" with version "1.19-windows" 00:00:08.227991 Finished saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" 00:00:08.489286 Saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" with version "1.19-windows" 00:00:08.491258 Finished saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" 00:00:08.725611 Saving settings file "C:\ProgramData\BOINC\slots\0\boinc_96284cf1d8204c5f\boinc_96284cf1d8204c5f.vbox" with version "1.19-windows" 00:00:08.727630 Finished saving settings file "C:\ProgramData\BOINC\slots\0\boinc_96284cf1d8204c5f\boinc_96284cf1d8204c5f.vbox" 00:00:08.756690 Saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" with version "1.19-windows" 00:00:08.758730 Finished saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" 00:00:08.990575 ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={7682d5eb-f00e-44f1-8ca2-99d08b1cd607} aComponent={VirtualBoxWrap} aText={Ńo extension pack providing a cryptographic support module could be found}, preserve=false aResultDetail=0 00:00:08.993310 ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 2 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0 00:00:08.993348 ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 2 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0 00:00:08.997056 ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0 00:00:09.259732 Launched VM: 1538326000 pid: 2308 (0x904) frontend: headless name: boinc_96284cf1d8204c5f 00:00:09.286812 Saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" with version "1.19-windows" 00:00:09.288909 Finished saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" 00:00:09.550110 ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={7682d5eb-f00e-44f1-8ca2-99d08b1cd607} aComponent={VirtualBoxWrap} aText={Ńo extension pack providing a cryptographic support module could be found}, preserve=false aResultDetail=0 00:00:09.552435 ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 2 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0 00:00:09.552471 ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 2 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0 00:00:09.555180 ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0 00:00:09.582359 Watcher ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={MachineWrap} aText={The virtual machine 'boinc_96284cf1d8204c5f' has terminated unexpectedly during startup with exit code 1 (0x1). More details may be available in 'C:\ProgramData\BOINC\slots\0\boinc_96284cf1d8204c5f\Logs\VBoxHardening.log'}, preserve=false aResultDetail=0 00:00:09.582605 Watcher Reaper: Pid 2308 (0x904) exited normally: 1 (0x1) 00:00:09.615600 ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0 00:00:09.642967 Saving settings file "C:\ProgramData\BOINC\slots\0\boinc_96284cf1d8204c5f\boinc_96284cf1d8204c5f.vbox" with version "1.19-windows" 00:00:09.644968 Finished saving settings file "C:\ProgramData\BOINC\slots\0\boinc_96284cf1d8204c5f\boinc_96284cf1d8204c5f.vbox" 00:00:09.820126 Launched VM: 1538386592 pid: 10832 (0x2a50) frontend: headless name: boinc_a335935b30ae6911 00:00:09.909815 Saving settings file "C:\Users\Aleric Mason\.VirtualBox\VirtualBox.xml" with version "1.12-windows" 00:00:09.911763 Finished saving settings file "C:\Users\Aleric Mason\.VirtualBox\VirtualBox.xml" 00:00:09.911875 Saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" with version "1.19-windows" 00:00:09.913792 Finished saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" 00:00:09.914288 DeleteVM Saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" with version "1.19-windows" 00:00:09.916158 DeleteVM Finished saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" 00:00:10.160653 Watcher ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={MachineWrap} aText={The virtual machine 'boinc_a335935b30ae6911' has terminated unexpectedly during startup with exit code 1 (0x1). More details may be available in 'C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\Logs\VBoxHardening.log'}, preserve=false aResultDetail=0 00:00:10.160926 Watcher Reaper: Pid 10832 (0x2a50) exited normally: 1 (0x1) 00:00:10.193753 ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={300763af-5d6b-46e6-aa96-273eac15538a} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0 00:00:10.225179 Saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" with version "1.19-windows" 00:00:10.227549 Finished saving settings file "C:\ProgramData\BOINC\slots\10\boinc_a335935b30ae6911\boinc_a335935b30ae6911.vbox" 00:00:10.486971 Saving settings file "C:\Users\Aleric Mason\.VirtualBox\VirtualBox.xml" with version "1.12-windows" 00:00:10.488911 Finished saving settings file "C:\Users\Aleric Mason\.VirtualBox\VirtualBox.xml" 00:00:10.488947 Saving settings file "C:\Users\Aleric Mason\.VirtualBox\VirtualBox.xml" with version "1.12-windows" 00:00:10.490731 Finished saving settings file "C:\Users\Aleric Mason\.VirtualBox\VirtualBox.xml" 00:00:10.491141 DeleteVM Saving settings file "C:\Users\Aleric Mason\.VirtualBox\VirtualBox.xml" with version "1.12-windows" 00:00:10.492941 DeleteVM Finished saving settings file "C:\Users\Aleric Mason\.VirtualBox\VirtualBox.xml" 00:00:15.501158 main VirtualBox: object deletion starts 00:00:15.501720 main HostDnsMonitor: shutting down ... 00:00:15.501738 main HostDnsMonitor: shut down 00:00:15.502577 Watcher ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={7682d5eb-f00e-44f1-8ca2-99d08b1cd607} aComponent={VirtualBoxWrap} aText={The object is not ready}, preserve=false aResultDetail=0 00:00:15.502764 main VirtualBox: object deleted VM Execution Log: VM Startup Log: VM Trace Log: fo.cpp 2025-03-15 00:59:19 (17860): Command: VBoxManage -q createvm --name "boinc_96284cf1d8204c5f" --basefolder "C:\ProgramData\BOINC\slots\0" --ostype "Linux26_64" --register Exit Code: 0 Output: Virtual machine 'boinc_96284cf1d8204c5f' is created and registered. UUID: 16f431ea-cb6e-46f0-9412-a7f5aa667f9f Settings file: 'C:\ProgramData\BOINC\slots\0\boinc_96284cf1d8204c5f\boinc_96284cf1d8204c5f.vbox' 2025-03-15 00:59:19 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --description "Theory_2843-4102779-525_0" Exit Code: 0 Output: 2025-03-15 00:59:19 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --memory 630 Exit Code: 0 Output: 2025-03-15 00:59:20 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --cpus 1 Exit Code: 0 Output: 2025-03-15 00:59:20 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --acpi on --ioapic on --rtcuseutc off Exit Code: 0 Output: 2025-03-15 00:59:20 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --vram 16 --graphicscontroller VBoxVGA Exit Code: 0 Output: 2025-03-15 00:59:20 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --boot1 disk --boot2 dvd --boot3 none --boot4 none Exit Code: 0 Output: 2025-03-15 00:59:21 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --nic1 nat --natdnsproxy1 on --cableconnected1 off Exit Code: 0 Output: 2025-03-15 00:59:21 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --cableconnected1 on Exit Code: 0 Output: 2025-03-15 00:59:21 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --usb off Exit Code: 0 Output: 2025-03-15 00:59:22 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --uart1 off --uart2 off Exit Code: 0 Output: 2025-03-15 00:59:22 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --lpt1 off --lpt2 off Exit Code: 0 Output: 2025-03-15 00:59:22 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --audio-enabled off Exit Code: 0 Output: 2025-03-15 00:59:22 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --clipboard disabled Exit Code: 0 Output: 2025-03-15 00:59:23 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --draganddrop disabled Exit Code: 0 Output: 2025-03-15 00:59:23 (17860): Command: VBoxManage -q storagectl "boinc_96284cf1d8204c5f" --name "Hard Disk Controller" --add "sata" --controller "IntelAHCI" --hostiocache off --portcount 3 Exit Code: 0 Output: 2025-03-15 00:59:23 (17860): Command: VBoxManage -q showhdinfo "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" Exit Code: 0 Output: UUID: 6a4110e9-e559-4c1c-bfd2-ba6f6aaf4169 Parent UUID: base State: created Type: multiattach Location: C:\ProgramData\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi Storage format: VDI Format variant: dynamic default Capacity: 20480 MBytes Size on disk: 781 MBytes Encryption: disabled Property: AllocationBlockSize=1048576 2025-03-15 00:59:23 (17860): Command: VBoxManage -q storageattach "boinc_96284cf1d8204c5f" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --mtype multiattach --medium "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" Exit Code: -2135228409 Output: VBoxManage.exe: error: Cannot attach medium 'C:\ProgramData\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi': the media type 'MultiAttach' can only be attached to machines that were created with VirtualBox 4.0 or later VBoxManage.exe: error: Details: code VBOX_E_INVALID_OBJECT_STATE (0x80bb0007), component SessionMachine, interface IMachine, callee IUnknown VBoxManage.exe: error: Context: "AttachDevice(Bstr(pszCtl).raw(), port, device, DeviceType_HardDisk, pMedium2Mount)" at line 785 of file VBoxManageStorageController.cpp 2025-03-15 00:59:24 (17860): Command: VBoxManage -q showhdinfo "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" Exit Code: 0 Output: UUID: 6a4110e9-e559-4c1c-bfd2-ba6f6aaf4169 Parent UUID: base State: created Type: multiattach Location: C:\ProgramData\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi Storage format: VDI Format variant: dynamic default Capacity: 20480 MBytes Size on disk: 781 MBytes Encryption: disabled Property: AllocationBlockSize=1048576 2025-03-15 00:59:24 (17860): Command: VBoxManage -q closemedium disk "C:\ProgramData\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi" Exit Code: 0 Output: 2025-03-15 00:59:24 (17860): Command: VBoxManage -q showhdinfo "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" Exit Code: 0 Output: UUID: 6a4110e9-e559-4c1c-bfd2-ba6f6aaf4169 Parent UUID: base State: created Type: normal (base) Location: C:\ProgramData\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi Storage format: VDI Format variant: dynamic default Capacity: 20480 MBytes Size on disk: 781 MBytes Encryption: disabled Property: AllocationBlockSize=1048576 2025-03-15 00:59:24 (17860): Command: VBoxManage -q storageattach "boinc_96284cf1d8204c5f" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --medium "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" Exit Code: 0 Output: 2025-03-15 00:59:25 (17860): Command: VBoxManage -q storageattach "boinc_96284cf1d8204c5f" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --medium none Exit Code: 0 Output: 2025-03-15 00:59:25 (17860): Command: VBoxManage -q storageattach "boinc_96284cf1d8204c5f" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --mtype multiattach --medium "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" Exit Code: 0 Output: 2025-03-15 00:59:25 (17860): Command: VBoxManage -q storageattach "boinc_96284cf1d8204c5f" --storagectl "Hard Disk Controller" --port 1 --device 0 --type dvddrive --medium "C:\Program Files\Oracle\VirtualBox/VBoxGuestAdditions.iso" Exit Code: 0 Output: 2025-03-15 00:59:25 (17860): Command: VBoxManage -q bandwidthctl "boinc_96284cf1d8204c5f" add "boinc_96284cf1d8204c5f_net" --type network --limit 1024G Exit Code: 0 Output: 2025-03-15 00:59:26 (17860): Command: VBoxManage -q modifyvm "boinc_96284cf1d8204c5f" --natpf1 ",tcp,127.0.0.1,50136,,80" Exit Code: 0 Output: 2025-03-15 00:59:26 (17860): Command: VBoxManage -q list extpacks Exit Code: 0 Output: Extension Packs: 0 2025-03-15 00:59:26 (17860): Command: VBoxManage -q sharedfolder add "boinc_96284cf1d8204c5f" --name "shared" --hostpath "C:\ProgramData\BOINC\slots\0/shared" Exit Code: 0 Output: 2025-03-15 00:59:27 (17860): Command: VBoxManage -q startvm "boinc_96284cf1d8204c5f" --type headless Exit Code: 1 Output: VBoxManage.exe: error: The virtual machine 'boinc_96284cf1d8204c5f' has terminated unexpectedly during startup with exit code 1 (0x1). More details may be available in 'C:\ProgramData\BOINC\slots\0\boinc_96284cf1d8204c5f\Logs\VBoxHardening.log' VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component MachineWrap, interface IMachine Waiting for VM "boinc_96284cf1d8204c5f" to power on... 2025-03-15 00:59:27 (17860): Command: VBoxManage -q snapshot "boinc_96284cf1d8204c5f" list Exit Code: -108 Output: This machine does not have any snapshots 2025-03-15 00:59:27 (17860): Command: VBoxManage -q bandwidthctl "boinc_96284cf1d8204c5f" remove "boinc_96284cf1d8204c5f_net" Exit Code: 0 Output: 2025-03-15 00:59:27 (17860): Command: VBoxManage -q unregistervm "boinc_96284cf1d8204c5f" --delete Exit Code: 0 Output: 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% 2025-03-15 00:59:34 (17860): called boinc_finish(1) </stderr_txt> ]]>
©2025 CERN