Hardware Hardware Vendor IBM Corporation Vendor URL http://www.ibm.com Model IBM Flex System p260 (4.1 GHz, 16 core, SLES) Processor POWER7+ (Intelligent Energy Optimization enabled, up to 4340 MHz) MHz 4116 # of Chips 2 # of Cores 16 # of Cores/Chip 8 HW Threading Enabled? yes Procs Avail to Java 64 Memory (MB) 131072 Memory Details 16 x 8 GB DDR3 1066 MHz Primary cache 32 KB I + 32 KB D on chip per core Secondary cache 256 KB I+D on chip per core Other cache 10 MB I+D on chip per core Filesystem ext3 Disks 1 x 600 GB SAS SFF 10K RPM Other hardware IBM Flex System Enterprise Chassis 7893-92X

Software Software Vendor IBM Corporation Vendor URL http://www.ibm.com JVM Version JRE 1.7.0 (32-bit) IBM J9 2.6 Linux (build pxp3270sr3-20120316_105695(SR3)) JVM Command Line -Xlp -Xaggressive -Xgcpolicy:gencon -Xgcthreads4 -XlockReservation -Xnoloa -Xms2560m -Xmx2560m -Xmn2048m -XtlhPrefetch spec.jbb.JBBmain -propfile SPECjbb.props JVM Initial Heap Memory (MB) 2560 JVM Maximum Heap Memory (MB) 2560 JVM Address bits 32 JVM CLASSPATH ./jbb.jar: ./check.jar: JVM BOOTCLASSPATH /autobench/sources/ibm-java-ppc-70/jre/lib/ppc/default/jclSC170/vm.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/se-service.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/math.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/jlm.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmorb.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmorbapi.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmcfw.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmpkcs.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmcertpathfw.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmjgssfw.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmjssefw.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmsaslfw.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmjcefw.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmjgssprovider.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmjsseprovider2.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/ibmcertpathprovider.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/xmldsigfw.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/xml.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/charsets.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/resources.jar: /autobench/sources/ibm-java-ppc-70/jre/lib/rt.jar OS Version SUSE Linux Enterprise Server 11 SP2 (3.0.13-0.27-ppc64) Other software None

Test Information Tested by IBM Corporation SPEC license # 11 Test location Austin, TX Test date Oct 28, 2012 H/w available Dec-2012 JVM available Nov-2012 OS available Feb-2012 Other s/w available None

AOT Compilation   Tuning Operating system tunings Cpusets mount -t cgroup -o cpuset cpuset /mnt/cpusets echo [0-3,4-7,...,60-63] > /mnt/cpusets/cpuset[1,2,...,16]/cpuset.cpus echo $$[1,2,...,16] > /mnt/cpusets/cpuset[1,2,...,16]/tasks echo 0 > /mnt/cpusets/cpuset.sched_load_balance Huge pages and shared memory echo 3000 > /proc/sys/vm/nr_hugepages echo 600000000000 > /proc/sys/kernel/shmmax echo 20000000 > /proc/sys/kernel/shmall Data prefetch ppc64_cpu --dscr=1 IBM Chassis Management Module used to set "Dynamic Power Saving - Favor Performance" mode for this Compute Node The Maximum Power Limit for this Compute Node was set according to recommendation on "IBM Chassis Management Module" Notes 16 JVMs were run in cpusets each containing 1 core Scheduler Load Balancing disabled on top cpuset This Compute Node is housed in an "IBM Flex System Enterprise Chassis" and is the only Compute Node

Details of Runs