Hardware Hardware Vendor IBM Corporation Vendor URL http://www.ibm.com Model IBM Power 780 (3.7 GHz, 128 core, RHEL) Processor POWER7+ (Intelligent Energy Optimization enabled, up to 4144 MHz) MHz 3724 # of Chips 16 # of Cores 128 # of Cores/Chip 8 HW Threading Enabled? yes Procs Avail to Java 512 Memory (MB) 1048576 Memory Details 64 x 16 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 ext4 Disks 12 x 146.8 GB SAS SFF 15K RPM Other hardware None

Software Software Vendor IBM 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 taskset -c [0-3,4-7,...,508-511] -- -Xlp -Xaggressive -Xgcpolicy:gencon -Xgcthreads4 -XlockReservation -Xnoloa -Xms2560m -Xmx2560m -Xmn2048m -XtlhPrefetch -Xjit:TLHPrefetchLineCount=6,TLHPrefetchStaggeredLineCount=2 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 Red Hat Enterprise Linux Server release 6.3 (2.6.32-279.el6.ppc64) Other software

Test Information Tested by IBM Corporation SPEC license # 11 Test location Austin, TX Test date Sep 27, 2012 H/w available Oct-2012 JVM available Nov-2012 OS available Jun-2012 Other s/w available

AOT Compilation   Tuning Operating system tunings echo 24000 > /proc/sys/vm/nr_hugepages echo 600000000000 > /proc/sys/kernel/shmmax echo 20000000 > /proc/sys/kernel/shmall ppc64_cpu --dscr=1 Notes 128 JVMs were run in processor sets each containing 1 core. Service processor memory mirroring property disabled.

Details of Runs