1. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 1 Evaluation of the LDC Computing Platform for Point 2 SuperMicro X7DBE-X Andrey Shevel CERN PH-AID ALICE DAQ (Internal report) CERN November 2006

2. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 2 Purpose  Background:  Test the machine Elonex Supermicro based on motherboard X7DBE-X (2xDual Core Xeon 3.0 GHz) as LDC with 6 D-RORCs  Evaluation program:  Linux installation.  DATE V5 installation.  D-RORC throughput with DATE.  Perform a range of runs with internal D-RORC generator and receiving through DATE.  Perform a range of long runs (two days each) in configuration with the test machine as LDC and another machine as GDC.  Quick comparison with another machine based on motherboard X6DHE-XB (Dual Xeon 2.8 MHz).

3. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 3 Architecture of motherboard

4. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 4 Supermicro X7DBE-X 4U (tower) Chassis 2x USB front, 2x USB back Serial, PS/2 Periphery ATI Technologies Inc ES1000 Graphics 120 GB, SATA Disk 2x GbE, Intel 631xESC/632xESB Network 3x 64-bit 133MHz PCI-X, 3x PCI-X (64-bit 133 MHz) 3x PCI-X (64-bit 100 MHz) I/O 2 GB (max 32GB), 533 MHz,DDR2 Memory 1333 MHzFSB Intel 5000P (BlackFord) Chipset 2 x Dual Core Intel Xeon, cache L2 – total 4 MB CPU pcald44.cern.ch

5. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 5 Software Installation  Linux  SLC4.4 with kernel 2.6.9-42.0.3.EL.cernsmp no specific problems: USB boot successful, BIOS – everything is OK  To use D-RORC modules the BIOS setting is needed to be changed: all PCI slots were set to 100 MHz  DATE 5.25 installation  MySql  mysqltcl  BWidget  SMI  DIM  Drivers: rorc and physmem have been installed as rpm with additional scripts: DATE_basic_Install-SLC4x.bash, DATE_User_Install-SLC4x.bash, DATE_DriversInstall.bash  No specific problems

6. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 6 Common info about measurement  Total main memory volume = 2 GB 1 GB for Linux (in /etc/grub.conf) 1 GB for physmem  6 cards D-RORC rev 4 (internal data generator).  All measurement were done with DATE 5.25. No received event data were recorded to HD. The data from the database were analyzed with scripts. The pictures were built up with gnuplot.  In total there were performed 390 measurement runs. Because the figures (rates, bandwidth) are fluctuating every run was continued at least 5 minutes.  Two points: random event size with max=10**4 and max=10**6 Bytes were measured during two days each (LDC on test machine, GDC on different machine).  All measurements with randomly distributed event size were performed with event checking in DATE.  D-RORC Page Size was 10**5 Bytes.

7. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 7 Event rate of one card

8. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 8 Bandwidth of readout of one card

9. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 9 Example of editDb page

10. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 10 Example of Memory Banks page

11. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 11 Event rate for several cards

12. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 12 Bandwidth for several cards

13. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 13 Event rate: ConsistencyCheckLevel

14. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 14 Bandwidth: ConsistencyCheckLevel

15. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 15 Event rate: NumberOfCards, ConsistencyCheckLevel

16. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 16 Bandwidth: NumberOfCards, ConsistencyCheckLevel

17. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 17 Event rate: D-RORC Page Size

18. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 18 Bandwidth: D-RORC Page Size

19. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 19 X6DHE-XB vs X7DBE-X Parameter nameX6DBE-XBX7DBE-X CPU type 2x Xeon 2.8 GHz, 1 MB2x Xeon 5160 dual core, 3.0 GHz, 4 MB L2 cache Chipset E7520 Intel 5000P (BlackFord) FSB 800 MHz1333 MHz Memory 2 GB, DDR 3332 GB, DDR-2 533 MHz PCI I/O 2x PCI-X (64/133) 4x PCI-X (64/100) 1x PCI-e (x4) 3x PCI-X (64-bit 100 MHz) 3x PCI-X (64-bit 133 MHz) Network 2x GbE, BCM57212x GbE, Intel 631xESB/632xESB SYSBENCH Memory bandwidth 1.5 GB/s3.4 GB/s RootMarks6141500

20. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 20 X6DHE-XB vs X7DBE-X (continuation) Parameter nameX6DBE-XBX7DBE-X Event rate for 1 D- RORC with the size 1 KB 88.9 KHz87.2 KHz Event rate for 6 D-RORCs with size 1 KB 6 KHz12.2 KHz Bandwidth of readout for 6 D- RORCs with size 10**6 Bytes 1.58 GB/sec1.98 GB/sec

21. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 21 Recommendation and conclusion  Recommendation: if you need to allocate D-RORC cards in the machine and like to have maximum bandwidth for X7DBE-X : it is better to avoid to use PCI slot 4 & PCI slot 5 at the same time for high bandwidth information sources.  Conclusion  In the test it was shown bandwidth (1.96 GB/sec) when all 6 D-RORC cards are in operation and event fragment size is more 10**5 bytes when ConsistencyCheckLevel=0.  X7DBE-X shows increased event rate and bandwidth with 6 D-RORCs, also it has more CPU power in comparison to X6DHE-XB.  The configuration LDC on test machine and GDC on another machine shown about the speed 118 MB/sec with no error during two days test.  Randomly distributed event fragment size with maximum 10**6 bytes gives total bandwidth 1.53 GB/sec during two days run.  The machine on the base X7DBE-X is excellent to be used as LDC with 6 D-RORC cards.

22. 4 Dec 2006 Testing the machine (X7DBE-X) with 6 D-RORCs 22 Thank you! Klaus Schossmaier, Sylvain Chapeland, Ulrich Fuchs and PH/AID crew