PAR Technologies V5 manual Testnodes, Np num, Cnt num, Map, Type

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test_nodes

test_nodes — test physical connections within a cluster.

Synopsis

test_nodes [-np num] [-cnt count] [-map] [-type]

Description

Tests all or some physical (low level) connections within a cluster. Therefore the program is started on num nodes. After all processes came up correctly, each of them starts to send test packets to every other node of the cluster. For this purpose the PSP_IReceive(3) and PSP_ISend(3) calls of the ParaStation PSPort library are used.

After every node has received data from any node (i.e. an all to all communication was executed), a success message is printed and test_nodes exits. Otherwise after a certain timeout a message concerning the current status about the tested connection is posted.

test_nodes will run as long as any connection between two tested nodes is unable to transport the test packets.

Options

-np num

Run the testing program on num nodes.

-cnt num

Send num test packets at once instead of only one.

-map

Don't print error messages but rather print a map with all working connections marked as 1 and all failed connections as 0.

-type

Print the type of each connection used instead of packets send/received. Implies -map.

See also

psid(8)

ParaStation5 Administrator's Guide

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Contents Administrators Guide Info@par-tec.com ParaStation5 Administrators GuideTable of Contents Problem different groups of nodes are seen as up or down History of ParaStation IntroductionAbout this document Kernel modules Technical overviewRuntime daemon LibrariesLicense Hardware InstallationPrerequisites Kernel version Directory structureSoftware Mpi2, mpi2-intel, mpi2-pgi, mpi2-psc Installation via RPM packagesGetting the ParaStation5 RPM packages ManFile Version Installing the RPMsCompiling the ParaStation5 packages from source ParaStation entries Installing the documentationEtc/init.d/xinetd reload # rpm -Uv psmpi2.5.0.0-1.i586.rpm Installing MPIFurther steps # rpm -Uv psdoc-5.0.0-1.noarch.rpmUninstalling ParaStation5 ParaStation5 Administrators Guide Define Number of nodes ConfigurationConfiguration of the ParaStation system Copy templateHostname id HWType runJob starter accounter Enable optimized network drivers# /opt/parastation/bin/testconfig Testing the installation # /opt/parastation/bin/testnodes -np nodes # /opt/parastation/bin/psiadmin -s -c listParaStation5 pscom communication library Insight ParaStation5# cat /proc/sys/ps4/state/connections # echo 10 /proc/sys/ps4/state/ResendTimeoutDirectory /proc/sys/ps4/state Directory /proc/sys/ps4/local Controlling process placementExporting environment variables for a task Using the ParaStation5 queuing facilityUsing non-ParaStationapplications Export LDPRELOAD=/opt/parastation/lib64/libp4tcp.so Controlling ParaStation5 communication pathsExport PSPLIB=/opt/parastation/lib64/libpscomopenib.so Authentication within ParaStation5Pspshm or Pspsharedmem PSPP4S or PSPP4SOCKNodes and CPUs Homogeneous user ID spaceSingle system view Parallel shell toolPSIRARGPRE0=/some/path/env2tok Integration with AFSIntegrating external queuing systems Tok2envMulticasts Route add -net 224.0.0.0 netmask 240.0.0.0 dev ethX Using ParaStation accountingCopying files in parallel # UseMCastSpawning processes belonging to all groups Using ParaStation process pinningUsing memory binding Changing the default ports for psid8Port Problem node shown as down TroubleshootingProblem psiadmin returns error Problem cannot start process on frontend Problem cannot start parallel taskProblem bad performance Problem different groups of nodes are seen as up or downProblem psid does not startup, reports port in use Problem pssh failsProblem processes cannot access files on remote nodes Reference Pages ParaStation5 Administrators Guide Parameters InstallDir inst-dir , InstallationDir inst-dirParastation.conf DescriptionStatusscript SetupscriptStartscript StopscriptElan P4sockOpenib MvapiNrOfNodes num Accounter$GENERATE 1-96 node$0,2 $0 Node node17 16 HWType ethernet p4sock starter yes runJobs noMCastGroup group-num SelectTime timeDeadInterval num LogLevel numMemLock size Core sizeCPUTime time DataSize sizeProc CPUmap map Processes maxprocsRdpResendTimeout ms RdpTimeout msStatusTimeout ms RdpClosedTimeout msSee also ErrorsParaStation5 Administrators Guide Options PsiadminSynopsis Extended description Standard ErrorStandard Input Standard OutputAllproc cnt count ExitAll Load Count hw hwDown HardwareQuit RdpSummary max max Maxproc nodes Accounters nodesUser nodes Group nodesNodesSort nodes Master nodesFreeOnSuspend nodes HandleOldBins nodesRlrss nodes Cpumap nodesRdpResendTimeout nodes RdpTimeout nodesStatusTimeout nodes RdpClosedTimeout nodesRestart nodes Resolve nodesPsiddebug mask nodes Selecttime time nodesPattern Name Description HandleOldBins 0 1 nodes Rdpmaxretrans val nodes RdpResendTimeout ms nodes RdpTimeout ms nodesStatusTimeout ms nodes RdpClosedTimeout ms nodesVerbose FilesQuiet NormalPsid Logfile=file Configfile=fileDebug=level ? , --usage Show a help message TestconfigFilename NumParaStation5 Administrators Guide Map TestnodesNp num Cnt numParaStation5 Administrators Guide Testpse -npnum TestpseParaStation5 Administrators Guide ?,--help P4statSock NetParaStation5 Administrators Guide Delete P4tcpAdd ParaStation5 Administrators Guide Pattern Description PsaccounterVar/account/yyyymmdd Accounting files, one per day DumpcoreCoredir=dir ?, --helpPsaccview Ls,--ltotsum Lj,--ljobsLu,--ltotuser Lg,--ltotgroupEnd CpuweightAqtime CputimeInitialization file Mlisten ParaStation5 Administrators Guide Appendix A. Quick Installation Guide Testing # /opt/parastation/bin/psiadmin psiadmin add# chkconfig -a /etc/init.d/parastation Appendix B. ParaStation license Page Page Page Changes to the runtime environment Building and installing ParaStation5 packages# psiadmin -s Appendix C. Upgrading ParaStation4 to ParaStation5Page ARP GlossarySee ParaStation Logger To share a common address space within a node ParaStation5 Administrators Guide