| Name | ZBPNDmvDNM9nsSi4ap6QjLDmwznN0nGgGQJmIVkRDmC4wLDmPwBUWo_0 |
| Workunit | 239961555 |
| Created | 16 Mar 2026, 13:49:15 UTC |
| Sent | 16 Mar 2026, 14:30:29 UTC |
| Report deadline | 24 Mar 2026, 14:30:29 UTC |
| Received | 17 Mar 2026, 3:32:48 UTC |
| Server state | Over |
| Outcome | Success |
| Client state | Done |
| Exit status | 0 (0x00000000) |
| Computer ID | 10829918 |
| Run time | 12 hours 14 min 58 sec |
| CPU time | 1 days 11 hours 46 min 55 sec |
| Priority | 28 |
| Validate state | Valid |
| Credit | 1,991.30 |
| Device peak FLOPS | 29.22 GFLOPS |
| Application version | ATLAS Simulation v3.03 (vbox64_mt_mcore_atlas) windows_x86_64 |
| Peak working set size | 89.09 MB |
| Peak swap size | 110.05 MB |
| Peak disk usage | 1.66 GB |
<core_client_version>8.0.2</core_client_version> <![CDATA[ <stderr_txt> 2026-03-16 16:16:43 (10244): vboxwrapper version 26210 2026-03-16 16:16:43 (10244): BOINC client version: 8.0.2 2026-03-16 16:16:44 (10244): Detected: VirtualBox VboxManage Interface (Version: 7.0.8) 2026-03-16 16:16:44 (10244): Successfully copied 'init_data.xml' to the shared directory. 2026-03-16 16:16:44 (10244): Create VM. (boinc_5cdc3d1db82c2627, slot#1) 2026-03-16 16:16:45 (10244): Setting Memory Size for VM. (5900MB) 2026-03-16 16:16:45 (10244): Setting CPU Count for VM. (3) 2026-03-16 16:16:45 (10244): Setting Chipset Options for VM. 2026-03-16 16:16:45 (10244): Setting Graphics Controller Options for VM. (Driver: VBoxVGA, 16MB) 2026-03-16 16:16:46 (10244): Setting Boot Options for VM. 2026-03-16 16:16:46 (10244): Setting Network Configuration for NAT. (Driver: virtio) 2026-03-16 16:16:46 (10244): Enabling VM Network Access. 2026-03-16 16:16:47 (10244): Disabling USB Support for VM. 2026-03-16 16:16:47 (10244): Disabling COM Port Support for VM. 2026-03-16 16:16:47 (10244): Disabling LPT Port Support for VM. 2026-03-16 16:16:47 (10244): Disabling Audio Support for VM. 2026-03-16 16:16:48 (10244): Disabling Clipboard Support for VM. 2026-03-16 16:16:48 (10244): Disabling Drag and Drop Support for VM. 2026-03-16 16:16:48 (10244): Adding storage controller(s) to VM. 2026-03-16 16:16:49 (10244): Adding virtual disk drive to VM. (ATLAS_vbox_3.03_image.vdi) 2026-03-16 16:16:49 (10244): Adding VirtualBox Guest Additions to VM. 2026-03-16 16:16:49 (10244): Adding network bandwidth throttle group to VM. (Defaulting to 1024GB) 2026-03-16 16:16:50 (10244): forwarding host port 51233 to guest port 80 2026-03-16 16:16:50 (10244): Enabling remote desktop for VM. 2026-03-16 16:16:50 (10244): Enabling shared directory for VM. 2026-03-16 16:16:51 (10244): Starting VM using VBoxManage interface. (boinc_5cdc3d1db82c2627, slot#1) 2026-03-16 16:16:57 (10244): Successfully started VM. (PID = '13036') 2026-03-16 16:16:57 (10244): Reporting VM Process ID to BOINC. 2026-03-16 16:16:57 (10244): Guest Log: BIOS: VirtualBox 7.0.8 2026-03-16 16:16:57 (10244): Guest Log: CPUID EDX: 0x178bfbff 2026-03-16 16:16:58 (10244): Guest Log: BIOS: No PCI IDE controller, not probing IDE 2026-03-16 16:16:58 (10244): Guest Log: BIOS: AHCI 0-P#0: PCHS=16383/16/63 LCHS=1024/255/63 0x0000000002800000 sectors 2026-03-16 16:16:58 (10244): VM state change detected. (old = 'poweredoff', new = 'running') 2026-03-16 16:16:58 (10244): Detected: Web Application Enabled (http://localhost:51233) 2026-03-16 16:16:58 (10244): Detected: Remote Desktop Enabled (localhost:51234) 2026-03-16 16:16:58 (10244): Preference change detected 2026-03-16 16:16:58 (10244): Setting CPU throttle for VM. (100%) 2026-03-16 16:16:58 (10244): Setting checkpoint interval to 900 seconds. (Higher value of (Preference: 60 seconds) or (Vbox_job.xml: 900 seconds)) 2026-03-16 16:17:00 (10244): Guest Log: BIOS: Boot : bseqnr=1, bootseq=0032 2026-03-16 16:17:00 (10244): Guest Log: BIOS: Booting from Hard Disk... 2026-03-16 16:17:03 (10244): Guest Log: BIOS: KBD: unsupported int 16h function 03 2026-03-16 16:17:03 (10244): Guest Log: BIOS: AX=0305 BX=0000 CX=0000 DX=0000 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=81 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=81 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=82 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=82 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=83 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=83 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=84 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=84 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=85 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=85 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=86 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=86 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=87 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=87 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=88 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=88 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=89 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=89 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8a 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8a 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8b 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8b 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8c 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8c 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8d 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8d 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8e 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8e 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8f 2026-03-16 16:17:03 (10244): Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8f 2026-03-16 16:18:08 (10244): Guest Log: vgdrvHeartbeatInit: Setting up heartbeat to trigger every 2000 milliseconds 2026-03-16 16:18:08 (10244): Guest Log: vboxguest: misc device minor 58, IRQ 20, I/O port d020, MMIO at 00000000f0400000 (size 0x400000) 2026-03-16 16:18:14 (10244): Guest Log: VBoxService 5.2.32 r132073 (verbosity: 0) linux.amd64 (Jul 12 2019 10:32:28) release log 2026-03-16 16:18:14 (10244): Guest Log: 00:00:00.000118 main Log opened 2026-03-16T16:18:11.481754000Z 2026-03-16 16:18:14 (10244): Guest Log: 00:00:00.000224 main OS Product: Linux 2026-03-16 16:18:14 (10244): Guest Log: 00:00:00.000258 main OS Release: 3.10.0-957.27.2.el7.x86_64 2026-03-16 16:18:14 (10244): Guest Log: 00:00:00.000283 main OS Version: #1 SMP Mon Jul 29 17:46:05 UTC 2019 2026-03-16 16:18:14 (10244): Guest Log: 00:00:00.000307 main Executable: /opt/VBoxGuestAdditions-5.2.32/sbin/VBoxService 2026-03-16 16:18:14 (10244): Guest Log: 00:00:00.000307 main Process ID: 1339 2026-03-16 16:18:14 (10244): Guest Log: 00:00:00.000308 main Package type: LINUX_64BITS_GENERIC 2026-03-16 16:18:14 (10244): Guest Log: 00:00:00.000982 main 5.2.32 r132073 started. Verbose level = 0 2026-03-16 16:18:14 (10244): Guest Log: [INFO] Probing /cvmfs/atlas.cern.ch... 2026-03-16 16:18:14 (10244): Guest Log: [INFO] Mounting shared directory 2026-03-16 16:18:14 (10244): Guest Log: [INFO] Checking for init_data.xml 2026-03-16 16:18:24 (10244): Guest Log: 00:00:10.004676 timesync vgsvcTimeSyncWorker: Radical guest time change: -3 592 920 475 000ns (GuestNow=1 773 674 298 563 192 000 ns GuestLast=1 773 677 891 483 667 000 ns fSetTimeLastLoop=true ) 2026-03-16 16:19:01 (10244): Guest Log: [INFO] Probing /cvmfs/atlas.cern.ch... OK 2026-03-16 16:19:01 (10244): Guest Log: [INFO] Detected branch: prod 2026-03-16 16:19:01 (10244): Guest Log: This is the prod version of the ATLAS job wrapper 2026-03-16 16:19:01 (10244): Guest Log: Copying input files 2026-03-16 16:19:02 (10244): Guest Log: Copied input files into RunAtlas. 2026-03-16 16:19:02 (10244): Guest Log: Detected user-configured HTTP proxy at http://192.168.0.39:3128 - will set in /etc/cvmfs/default.local 2026-03-16 16:19:47 (10244): Guest Log: Running cvmfs_config stat atlas.cern.ch 2026-03-16 16:19:47 (10244): Guest Log: VERSION PID UPTIME(M) MEM(K) REVISION EXPIRES(M) NOCATALOGS CACHEUSE(K) CACHEMAX(K) NOFDUSE NOFDMAX NOIOERR NOOPEN HITRATE(%) RX(K) SPEED(K/S) HOST PROXY ONLINE 2026-03-16 16:19:47 (10244): Guest Log: 2.6.3.0 1620 0 29608 157351 4 1 3117743 4096001 0 65024 0 0 n/a 0 0 http://s1cern-cvmfs.openhtc.io/cvmfs/atlas.cern.ch http://192.168.0.39:3128 1 2026-03-16 16:19:48 (10244): Guest Log: copied the webapp to /var/www 2026-03-16 16:19:48 (10244): Guest Log: ATHENA_PROC_NUMBER=3 2026-03-16 16:19:48 (10244): Guest Log: ATHENA_CORE_NUMBER=3 2026-03-16 16:19:48 (10244): Guest Log: Apptainer command /cvmfs/atlas.cern.ch/repo/containers/sw/apptainer/x86_64-el7/current/bin/apptainer exec -B /cvmfs,/data,/home/atlas/RunAtlas /cvmfs/atlas.cern.ch/repo/containers/fs/singularity/x86_64-centos7 2026-03-16 16:19:48 (10244): Guest Log: *** Starting ATLAS job. (PandaID=7056912425 taskID=49177032) *** 2026-03-16 17:57:01 (10244): Status Report: Elapsed Time: '6000.000000' 2026-03-16 17:57:01 (10244): Status Report: CPU Time: '16046.906250' 2026-03-16 19:37:05 (10244): Status Report: Elapsed Time: '12000.000000' 2026-03-16 19:37:05 (10244): Status Report: CPU Time: '33880.390625' 2026-03-16 21:17:09 (10244): Status Report: Elapsed Time: '18000.000000' 2026-03-16 21:17:09 (10244): Status Report: CPU Time: '51714.453125' 2026-03-16 22:57:12 (10244): Status Report: Elapsed Time: '24000.000000' 2026-03-16 22:57:12 (10244): Status Report: CPU Time: '69548.437500' 2026-03-17 00:37:16 (10244): Status Report: Elapsed Time: '30000.000000' 2026-03-17 00:37:16 (10244): Status Report: CPU Time: '87382.703125' 2026-03-17 02:17:19 (10244): Status Report: Elapsed Time: '36000.000000' 2026-03-17 02:17:19 (10244): Status Report: CPU Time: '105218.687500' 2026-03-17 03:05:06 (10244): VM state change detected. (old = 'running', new = 'paused') 2026-03-17 03:05:27 (10244): VM state change detected. (old = 'paused', new = 'running') 2026-03-17 03:57:45 (10244): Status Report: Elapsed Time: '42000.000000' 2026-03-17 03:57:45 (10244): Status Report: CPU Time: '123039.218750' 2026-03-17 04:31:55 (10244): Guest Log: *** Job finished *** 2026-03-17 04:31:55 (10244): Guest Log: *** The last 20 lines of the pilot log: *** 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:11,454 | WARNING | pilot monitor received instruction that args.graceful_stop has been set 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:11,454 | WARNING | will wait for a maximum of 300 s for threads to finish 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:11,778 | INFO | [monitor] cgroup control has ended 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:12,462 | INFO | only monitor.control thread still running - safe to abort: ['<_MainThread(MainThread, started 140119679715136)>', '<ExcThread(monitor, started 140118803343104)>'] 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:13,457 | WARNING | job_aborted has been set - aborting pilot monitoring 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:13,457 | INFO | [monitor] control thread has ended 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,468 | INFO | all workflow threads have been joined 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,468 | INFO | end of generic workflow (traces error code: 0) 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,468 | INFO | traces error code: 0 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,468 | INFO | pilot has finished (exit code=0, shell exit code=0) 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,569 [wrapper] ==== pilot stdout END ==== 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,573 [wrapper] ==== wrapper stdout RESUME ==== 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,577 [wrapper] pilotpid: 6029 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,581 [wrapper] Pilot exit status: 0 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,605 [wrapper] pandaids: 7056912425 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,632 [wrapper] cleanup supervisor_pilot 4756 6030 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,643 [wrapper] Test setup, not cleaning 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,647 [wrapper] apfmon messages muted 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,651 [wrapper] ==== wrapper stdout END ==== 2026-03-17 04:31:55 (10244): Guest Log: 2026-03-17 03:31:17,655 [wrapper] ==== wrapper stderr END ==== 2026-03-17 04:31:55 (10244): Guest Log: *** Error codes and diagnostics *** 2026-03-17 04:31:55 (10244): Guest Log: "exeErrorCode": 0, 2026-03-17 04:31:55 (10244): Guest Log: "exeErrorDiag": "", 2026-03-17 04:31:55 (10244): Guest Log: "pilotErrorCode": 0, 2026-03-17 04:31:55 (10244): Guest Log: "pilotErrorDiag": "", 2026-03-17 04:31:55 (10244): Guest Log: *** Listing of results directory *** 2026-03-17 04:31:55 (10244): Guest Log: total 246720 2026-03-17 04:31:55 (10244): Guest Log: -rw-r--r--. 1 atlas atlas 585013 Mar 16 13:19 pilot3.tar.gz 2026-03-17 04:31:55 (10244): Guest Log: -rwx------. 1 atlas atlas 36322 Mar 16 13:31 runpilot2-wrapper.sh 2026-03-17 04:31:55 (10244): Guest Log: -rw-r--r--. 1 atlas atlas 5111 Mar 16 13:44 queuedata.json 2026-03-17 04:31:55 (10244): Guest Log: -rwxr-xr-x. 1 atlas atlas 9082 Mar 16 15:18 init_data.xml 2026-03-17 04:31:55 (10244): Guest Log: -rwxr-xr-x. 1 atlas atlas 597548 Mar 16 15:18 input.tar.gz 2026-03-17 04:31:55 (10244): Guest Log: -rwxr-xr-x. 1 atlas atlas 15845 Mar 16 15:18 start_atlas.sh 2026-03-17 04:31:55 (10244): Guest Log: lrwxrwxrwx. 1 atlas atlas 20 Mar 16 15:18 EVNT.49136164._000024.pool.root.1 -> /data/./ATLAS.root_0 2026-03-17 04:31:55 (10244): Guest Log: -rw-r--r--. 1 atlas atlas 2629 Mar 16 15:19 pandaJob.out 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 49 Mar 16 15:19 setup.sh.local 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 1006429 Mar 16 15:20 agis_schedconf.cvmfs.json 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 424 Mar 16 15:20 workernode_map.json 2026-03-17 04:31:55 (10244): Guest Log: drwx------. 5 atlas atlas 4096 Mar 16 15:20 pilot3 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 235084399 Mar 17 03:30 HITS.49177032._000592.pool.root.1 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 1024 Mar 17 03:30 memory_monitor_summary.json 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 1511579 Mar 17 03:30 agis_ddmendpoints.agis.ALL.json 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 791499 Mar 17 03:30 log.49177032._000592.job.log.tgz.1 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 6358 Mar 17 03:30 heartbeat.json 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 95 Mar 17 03:31 pilot_heartbeat.json 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 4801 Mar 17 03:31 pilotlog.txt 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 6052622 Mar 17 03:31 log.49177032._000592.job.log.1 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 357 Mar 17 03:31 output.list 2026-03-17 04:31:55 (10244): Guest Log: -rw-r--r--. 1 atlas atlas 620 Mar 17 03:31 runtime_log 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 6860800 Mar 17 03:31 result.tar.gz 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 660 Mar 17 03:31 ZBPNDmvDNM9nsSi4ap6QjLDmwznN0nGgGQJmIVkRDmC4wLDmPwBUWo.diag 2026-03-17 04:31:55 (10244): Guest Log: -rw-r--r--. 1 atlas atlas 9236 Mar 17 03:31 runtime_log.err 2026-03-17 04:31:55 (10244): Guest Log: Looking for outputfile HITS.49177032._000592.pool.root.1 2026-03-17 04:31:55 (10244): Guest Log: HITS file was successfully produced 2026-03-17 04:31:55 (10244): Guest Log: -rw-------. 1 atlas atlas 235084399 Mar 17 03:30 /home/atlas/RunAtlas/HITS.49177032._000592.pool.root.1 2026-03-17 04:31:56 (10244): Guest Log: Successfully finished the ATLAS job! 2026-03-17 04:31:56 (10244): Guest Log: Copying the results back to the shared directory! 2026-03-17 04:31:56 (10244): Guest Log: *** Contents of shared directory: *** 2026-03-17 04:31:56 (10244): Guest Log: total 470240 2026-03-17 04:31:56 (10244): Guest Log: -rwxrwxrwx. 1 root root 238948575 Mar 16 15:16 ATLAS.root_0 2026-03-17 04:31:56 (10244): Guest Log: -rwxrwxrwx. 1 root root 235084399 Mar 17 2026 HITS.pool.root.1 2026-03-17 04:31:56 (10244): Guest Log: -rwxrwxrwx. 1 root root 9082 Mar 16 15:16 init_data.xml 2026-03-17 04:31:56 (10244): Guest Log: -rwxrwxrwx. 1 root root 597548 Mar 16 14:30 input.tar.gz 2026-03-17 04:31:56 (10244): Guest Log: -rwxrwxrwx. 1 root root 6860800 Mar 17 2026 result.tar.gz 2026-03-17 04:31:56 (10244): Guest Log: -rwxrwxrwx. 1 root root 15845 Mar 16 14:30 start_atlas.sh 2026-03-17 04:31:56 (10244): Guest Log: *** Success! Shutting down the machine. *** 2026-03-17 04:31:56 (10244): VM Completion File Detected. 2026-03-17 04:31:56 (10244): Powering off VM. 2026-03-17 04:31:57 (10244): Successfully stopped VM. 2026-03-17 04:31:57 (10244): Deregistering VM. (boinc_5cdc3d1db82c2627, slot#1) 2026-03-17 04:31:57 (10244): Removing network bandwidth throttle group from VM. 2026-03-17 04:31:57 (10244): Removing VM from VirtualBox. 2026-03-17 04:32:02 (10244): called boinc_finish(0) </stderr_txt> ]]>
©2026 CERN