1) Message boards : Number crunching : Computation Errors (Message 49445)
Posted 7 Feb 2024 by StarCastle
Post:
Thank you for the direction.

That worked perfectly and I can now process Theory Tasks.

Something else to add to the Troubleshooting wallboard lol.
2) Message boards : Number crunching : Computation Errors (Message 49393)
Posted 4 Feb 2024 by StarCastle
Post:
I set my prefs for CMS only and the tasks download and run correctly so the issue seems to be with the Theory tasks.

I monitored the startup in Vbox and noticed that the instance would begin to start then it would fail and a cleanup would remove the files.

I did capture the vbox trace file to see what was happening and the following error pops up every time an instance tries to start:

Command: VBoxManage -q showvminfo "boinc_23c1e4f58830b1c0" --machinereadable
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_23c1e4f58830b1c0'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(VMNameOrUuid).raw(), machine.asOutParam())" at line 3139 of file VBoxManageInfo.cpp

2024-02-03 21:54:36 (12296):
Command: VBoxManage -q showhdinfo "D:\Program Data\BOINC\slots\0/vm_image.vdi"
Exit Code: -2135228412
Output:
VBoxManage.exe: error: Could not find file for the medium 'D:\Program Data\BOINC\slots\0\vm_image.vdi' (VERR_FILE_NOT_FOUND)
VBoxManage.exe: error: Details: code VBOX_E_FILE_ERROR (0x80bb0004), component MediumWrap, interface IMedium, callee IUnknown
VBoxManage.exe: error: Context: "OpenMedium(Bstr(pszFilenameOrUuid).raw(), enmDevType, enmAccessMode, fForceNewUuidOnOpen, pMedium.asOutParam())" at line 205 of file VBoxManageDisk.cpp

2024-02-03 21:54:36 (12296):
Command: VBoxManage -q createvm --name "boinc_23c1e4f58830b1c0" --basefolder "D:\Program Data\BOINC\slots\0" --ostype "Linux26_64" --register
Exit Code: 0

And later in the log:

2024-02-03 21:54:40 (12296):
Command: VBoxManage -q storageattach "boinc_23c1e4f58830b1c0" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --mtype multiattach --medium "D:\Program Data\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2023_12_13.vdi"
Exit Code: -2135228409
Output:
VBoxManage.exe: error: Cannot attach medium 'D:\Program Data\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2023_12_13.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

2024-02-03 21:54:41 (12296):
Command: VBoxManage -q closemedium "D:\Program Data\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2023_12_13.vdi"
Exit Code: -2135228404
Output:
VBoxManage.exe: error: Cannot close medium 'D:\Program Data\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2023_12_13.vdi' because it has 1 child media
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_IN_USE (0x80bb000c), component MediumWrap, interface IMedium, callee IUnknown
VBoxManage.exe: error: Context: "Close()" at line 1878 of file VBoxManageDisk.cpp

Since I have been doing Theory tasks in the past something must have changed but I have not made any changes to the host.

Ideas would be appreciated where to look.

Thanks
3) Message boards : Number crunching : Computation Errors (Message 49365)
Posted 2 Feb 2024 by StarCastle
Post:
Thanks for the info, will give that a try.
4) Message boards : Number crunching : Computation Errors (Message 49361)
Posted 2 Feb 2024 by StarCastle
Post:
This has recently started happening (within the last few days).

The tasks all ends at about 25 seconds and the log shows the following in each case:

2024-02-02 6:51:06 AM | LHC@home | Output file Theory_2687-2563509-84_0_r635125659_result for task Theory_2687-2563509-84_0 absent

Any ideas what is happening?

Thanks



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