Name CMS_1490162_1686875562.868474_0
Workunit 2312550
Created 16 Jun 2023, 0:32:45 UTC
Sent 18 Jun 2023, 0:16:18 UTC
Report deadline 25 Jun 2023, 0:16:18 UTC
Received 18 Jun 2023, 0:18:49 UTC
Server state Over
Outcome Computation error
Client state Compute error
Exit status -2147467259 (0x80004005) Unknown error code
Computer ID 4901
Run time 53 sec
CPU time 0 sec
Validate state Invalid
Credit 0.00
Device peak FLOPS 9.59 GFLOPS
Application version CMS Simulation v60.70 (vbox64_mt_mcore_cms)
windows_x86_64
Peak working set size 10.41 MB
Peak swap size 6.23 MB
Peak disk usage 9.04 KB

Stderr output

<core_client_version>7.20.2</core_client_version>
<![CDATA[
<message>
Unspecified error
 (0x80004005) - exit code 2147500037 (0x80004005)</message>
<stderr_txt>
2023-06-18 10:16:22 (38984): Detected: vboxwrapper 26206
2023-06-18 10:16:22 (38984): Detected: BOINC client v7.20.2
2023-06-18 10:16:27 (38984): Detected: VirtualBox VboxManage Interface (Version: 6.1.34)
2023-06-18 10:16:29 (38984): Detected: Heartbeat check (file: 'heartbeat' every 1200.000000 seconds)
2023-06-18 10:16:29 (38984): Successfully copied 'init_data.xml' to the shared directory.
2023-06-18 10:16:31 (38984): Create VM. (boinc_1891d08b3db16376, slot#77)
2023-06-18 10:16:32 (38984): Setting Memory Size for VM. (2792MB)
2023-06-18 10:16:33 (38984): Setting CPU Count for VM. (2)
2023-06-18 10:16:34 (38984): Setting Chipset Options for VM.
2023-06-18 10:16:35 (38984): Setting Graphics Controller Options for VM.
2023-06-18 10:16:36 (38984): Setting Boot Options for VM.
2023-06-18 10:16:36 (38984): Setting Network Configuration for NAT.
2023-06-18 10:16:38 (38984): Enabling VM Network Access.
2023-06-18 10:16:38 (38984): Disabling USB Support for VM.
2023-06-18 10:16:39 (38984): Disabling COM Port Support for VM.
2023-06-18 10:16:40 (38984): Disabling LPT Port Support for VM.
2023-06-18 10:16:41 (38984): Disabling Audio Support for VM.
2023-06-18 10:16:42 (38984): Disabling Clipboard Support for VM.
2023-06-18 10:16:42 (38984): Disabling Drag and Drop Support for VM.
2023-06-18 10:16:43 (38984): Adding storage controller(s) to VM.
2023-06-18 10:16:45 (38984): Adding virtual disk drive to VM. (CMS_2022_09_07.vdi)
2023-06-18 10:16:50 (38984): Adding VirtualBox Guest Additions to VM.
2023-06-18 10:16:52 (38984): Adding network bandwidth throttle group to VM. (Defaulting to 1024GB)
2023-06-18 10:16:53 (38984): forwarding host port 50375 to guest port 80
2023-06-18 10:16:54 (38984): Enabling remote desktop for VM.
2023-06-18 10:16:55 (38984): Required extension pack not installed, remote desktop not enabled.
2023-06-18 10:16:55 (38984): Enabling shared directory for VM.
2023-06-18 10:16:58 (38984): Starting VM using VBoxManage interface. (boinc_1891d08b3db16376, slot#77)
2023-06-18 10:17:03 (38984): Error in start VM for VM: -2147467259
Command:
VBoxManage -q startvm "boinc_1891d08b3db16376" --type headless
Output:
Waiting for VM "boinc_1891d08b3db16376" to power on...
VBoxManage.exe: error: Not in a hypervisor partition (HVP=0) (VERR_NEM_NOT_AVAILABLE).
VBoxManage.exe: error: AMD-V is disabled in the BIOS (or by the host OS) (VERR_SVM_DISABLED)
VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component ConsoleWrap, interface IConsole

2023-06-18 10:17:03 (38984): VM failed to start.
2023-06-18 10:17:03 (38984): Could not start 
2023-06-18 10:17:03 (38984): ERROR: VM failed to start
2023-06-18 10:17:03 (38984): Powering off VM.
2023-06-18 10:17:03 (38984): Deregistering VM. (boinc_1891d08b3db16376, slot#77)
2023-06-18 10:17:04 (38984): Removing network bandwidth throttle group from VM.
2023-06-18 10:17:06 (38984): Removing VM from VirtualBox.

    Hypervisor System Log:

00:00:06.721630          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:06.730360          Saving settings file "C:\Users\peter\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:07.786774          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:08.457360          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:09.573023          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:10.505735          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:11.188315          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:11.599365          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:12.548354          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:13.564395          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:14.110500          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:15.101435          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:15.684409          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:17.255337          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:18.065077          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:18.426857          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:19.456376          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:21.962970          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 0 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:21.964499          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 0 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:21.964797          Saving settings file "C:\Users\peter\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:21.972628          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:24.063140          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:24.872315          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 0 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:24.873215          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:24.879745          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 0 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:24.883336          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:24.889773          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:26.702048          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 1 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:26.712164          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 1 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:26.712357          Saving settings file "C:\Users\peter\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:26.719323          Saving settings file "C:\Users\peter\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:26.724489          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:28.073510          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:29.153358          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:31.421060          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:33.066031          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 2 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:33.066207          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 2 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:33.076804          ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0
00:00:33.780646          Launched VM: 75486080 pid: 33872 (0x8450) frontend: headless name: boinc_1891d08b3db16376
00:00:38.371531          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:39.409764          ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0
00:00:40.293707          Saving settings file "C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox" with version "1.16-windows"
00:00:41.791283          Saving settings file "C:\Users\peter\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:46.894147 main     VirtualBox: object deletion starts
00:00:46.895251 main     HostDnsMonitor: shutting down ...
00:00:46.895304 main     HostDnsMonitor: shut down
00:00:46.896914 Watcher  ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={The object is not ready}, preserve=false aResultDetail=0
00:00:46.897174 main     VirtualBox: object deleted

    VM Execution Log:


    VM Startup Log:


    VM Trace Log:

pper 3990X 64-Core Processor
Processor#118 speed: unknown
Processor#118 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#119 speed: unknown
Processor#119 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#120 speed: unknown
Processor#120 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#121 speed: unknown
Processor#121 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#122 speed: unknown
Processor#122 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#123 speed: unknown
Processor#123 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#124 speed: unknown
Processor#124 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#125 speed: unknown
Processor#125 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#126 speed: unknown
Processor#126 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Processor#127 speed: unknown
Processor#127 description: AMD Ryzen Threadripper 3990X 64-Core Processor
Memory size: 32656 MByte
Memory available: 21597 MByte
Operating system: Windows 10
Operating system version: 10.0.19045

2023-06-18 10:16:30 (38984): 
Command: VBoxManage -q showvminfo "boinc_1891d08b3db16376" --machinereadable 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_1891d08b3db16376'
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 2733 of file VBoxManageInfo.cpp

2023-06-18 10:16:31 (38984): 
Command: VBoxManage -q showhdinfo "C:\ProgramData\BOINC\slots\77/vm_image.vdi" 
Exit Code: -2135228412
Output:
VBoxManage.exe: error: Could not find file for the medium 'C:\ProgramData\BOINC\slots\77\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 191 of file VBoxManageDisk.cpp

2023-06-18 10:16:32 (38984): 
Command: VBoxManage -q createvm --name "boinc_1891d08b3db16376" --basefolder "C:\ProgramData\BOINC\slots\77" --ostype "Linux26_64" --register
Exit Code: 0
Output:
Virtual machine 'boinc_1891d08b3db16376' is created and registered.
UUID: 915811c8-e2dd-4f13-91c5-c2d3632200a7
Settings file: 'C:\ProgramData\BOINC\slots\77\boinc_1891d08b3db16376\boinc_1891d08b3db16376.vbox'

2023-06-18 10:16:32 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --description "CMS_1490162_1686875562.868474_0" 
Exit Code: 0
Output:

2023-06-18 10:16:33 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --memory 2792 
Exit Code: 0
Output:

2023-06-18 10:16:34 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --cpus 2 
Exit Code: 0
Output:

2023-06-18 10:16:35 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --acpi on --ioapic on --rtcuseutc off 
Exit Code: 0
Output:

2023-06-18 10:16:36 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --vram 16 --graphicscontroller VBoxVGA 
Exit Code: 0
Output:

2023-06-18 10:16:36 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --boot1 disk --boot2 dvd --boot3 none --boot4 none 
Exit Code: 0
Output:

2023-06-18 10:16:37 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --nic1 nat --natdnsproxy1 on --cableconnected1 off 
Exit Code: 0
Output:

2023-06-18 10:16:38 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --cableconnected1 on 
Exit Code: 0
Output:

2023-06-18 10:16:39 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --usb off 
Exit Code: 0
Output:

2023-06-18 10:16:40 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --uart1 off --uart2 off 
Exit Code: 0
Output:

2023-06-18 10:16:40 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --lpt1 off --lpt2 off 
Exit Code: 0
Output:

2023-06-18 10:16:42 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --audio none 
Exit Code: 0
Output:

2023-06-18 10:16:42 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --clipboard disabled 
Exit Code: 0
Output:

2023-06-18 10:16:43 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --draganddrop disabled 
Exit Code: 0
Output:

2023-06-18 10:16:45 (38984): 
Command: VBoxManage -q storagectl "boinc_1891d08b3db16376" --name "Hard Disk Controller" --add "sata" --controller "IntelAHCI" --hostiocache off --portcount 3
Exit Code: 0
Output:

2023-06-18 10:16:46 (38984): 
Command: VBoxManage -q showhdinfo "C:\ProgramData\BOINC/projects/lhcathomedev.cern.ch_lhcathome-dev/CMS_2022_09_07.vdi" 
Exit Code: 0
Output:
UUID:           8fb925ef-3497-4bfb-88e3-bbab2930787f
Parent UUID:    base
State:          created
Type:           normal (base)
Location:       C:\ProgramData\BOINC\projects\lhcathomedev.cern.ch_lhcathome-dev\CMS_2022_09_07.vdi
Storage format: VDI
Format variant: dynamic default
Capacity:       20480 MBytes
Size on disk:   3854 MBytes
Encryption:     disabled
Property:       AllocationBlockSize=1048576

2023-06-18 10:16:48 (38984): 
Command: VBoxManage -q storageattach "boinc_1891d08b3db16376" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --medium "C:\ProgramData\BOINC/projects/lhcathomedev.cern.ch_lhcathome-dev/CMS_2022_09_07.vdi" 
Exit Code: 0
Output:

2023-06-18 10:16:49 (38984): 
Command: VBoxManage -q storageattach "boinc_1891d08b3db16376" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --medium none 
Exit Code: 0
Output:

2023-06-18 10:16:50 (38984): 
Command: VBoxManage -q storageattach "boinc_1891d08b3db16376" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --mtype multiattach --medium "C:\ProgramData\BOINC/projects/lhcathomedev.cern.ch_lhcathome-dev/CMS_2022_09_07.vdi" 
Exit Code: 0
Output:

2023-06-18 10:16:51 (38984): 
Command: VBoxManage -q storageattach "boinc_1891d08b3db16376" --storagectl "Hard Disk Controller" --port 1 --device 0 --type dvddrive --medium "C:\Program Files\Oracle\VirtualBox/VBoxGuestAdditions.iso" 
Exit Code: 0
Output:

2023-06-18 10:16:53 (38984): 
Command: VBoxManage -q bandwidthctl "boinc_1891d08b3db16376" add "boinc_1891d08b3db16376_net" --type network --limit 1024G 
Exit Code: 0
Output:

2023-06-18 10:16:54 (38984): 
Command: VBoxManage -q modifyvm "boinc_1891d08b3db16376" --natpf1 ",tcp,127.0.0.1,50375,,80" 
Exit Code: 0
Output:

2023-06-18 10:16:55 (38984): 
Command: VBoxManage -q list extpacks
Exit Code: 0
Output:
Extension Packs: 0

2023-06-18 10:16:57 (38984): 
Command: VBoxManage -q sharedfolder add "boinc_1891d08b3db16376" --name "shared" --hostpath "C:\ProgramData\BOINC\slots\77/shared"
Exit Code: 0
Output:

2023-06-18 10:17:03 (38984): 
Command: VBoxManage -q startvm "boinc_1891d08b3db16376" --type headless
Exit Code: -2147467259
Output:
Waiting for VM "boinc_1891d08b3db16376" to power on...
VBoxManage.exe: error: Not in a hypervisor partition (HVP=0) (VERR_NEM_NOT_AVAILABLE).
VBoxManage.exe: error: AMD-V is disabled in the BIOS (or by the host OS) (VERR_SVM_DISABLED)
VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component ConsoleWrap, interface IConsole

2023-06-18 10:17:04 (38984): 
Command: VBoxManage -q snapshot "boinc_1891d08b3db16376" list 
Exit Code: -108
Output:
This machine does not have any snapshots

2023-06-18 10:17:06 (38984): 
Command: VBoxManage -q bandwidthctl "boinc_1891d08b3db16376" remove "boinc_1891d08b3db16376_net" 
Exit Code: 0
Output:

2023-06-18 10:17:06 (38984): 
Command: VBoxManage -q unregistervm "boinc_1891d08b3db16376" --delete 
Exit Code: 0
Output:
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%

10:17:12 (38984): called boinc_finish(-2147467259)

</stderr_txt>
]]>


©2024 CERN