PAR Technologies V5 manual Problem processes cannot access files on remote nodes

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Problem: processes cannot access files on remote nodes

Make sure no other process uses this port. Or use the RDPPort directive within parastation.conf to re-define this port for all daemons within the cluster.

See also parastation.conf(5).

6.10.Problem: processes cannot access files on remote nodes

Problem: processes created by ParaStation on remote nodes are not able to access files, if this files have enabled access only for a supplementary group the current user belongs to.

By default, only the primary group is set for newly created processes. To add all groups to a process, set the supplGrps flag within parastation.conf or use the supplementaryGroups directive within psiadmin.

See also Section 5.21, “Spawning processes belonging to all groups”.

32	ParaStation5 Administrator's Guide

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Contents Administrators Guide ParaStation5 Administrators Guide Info@par-tec.comTable of Contents Problem different groups of nodes are seen as up or down Introduction History of ParaStationAbout this document Technical overview Runtime daemonLibraries Kernel modulesLicense Installation PrerequisitesHardware Directory structure SoftwareKernel version Installation via RPM packages Getting the ParaStation5 RPM packagesMan Mpi2, mpi2-intel, mpi2-pgi, mpi2-pscInstalling the RPMs Compiling the ParaStation5 packages from sourceFile Version Installing the documentation Etc/init.d/xinetd reloadParaStation entries Installing MPI Further steps# rpm -Uv psdoc-5.0.0-1.noarch.rpm # rpm -Uv psmpi2.5.0.0-1.i586.rpmUninstalling ParaStation5 ParaStation5 Administrators Guide Configuration Configuration of the ParaStation systemCopy template Define Number of nodesEnable optimized network drivers # /opt/parastation/bin/testconfigHostname id HWType runJob starter accounter Testing the installation # /opt/parastation/bin/psiadmin -s -c list # /opt/parastation/bin/testnodes -np nodesInsight ParaStation5 ParaStation5 pscom communication library# echo 10 /proc/sys/ps4/state/ResendTimeout Directory /proc/sys/ps4/state# cat /proc/sys/ps4/state/connections Controlling process placement Directory /proc/sys/ps4/localUsing the ParaStation5 queuing facility Using non-ParaStationapplicationsExporting environment variables for a task Controlling ParaStation5 communication paths Export LDPRELOAD=/opt/parastation/lib64/libp4tcp.soAuthentication within ParaStation5 Pspshm or PspsharedmemPSPP4S or PSPP4SOCK Export PSPLIB=/opt/parastation/lib64/libpscomopenib.soHomogeneous user ID space Single system viewParallel shell tool Nodes and CPUsIntegration with AFS Integrating external queuing systemsTok2env PSIRARGPRE0=/some/path/env2tokMulticasts Using ParaStation accounting Copying files in parallel# UseMCast Route add -net 224.0.0.0 netmask 240.0.0.0 dev ethXUsing ParaStation process pinning Using memory bindingChanging the default ports for psid8 Spawning processes belonging to all groupsPort Troubleshooting Problem psiadmin returns errorProblem node shown as down Problem cannot start parallel task Problem bad performanceProblem different groups of nodes are seen as up or down Problem cannot start process on frontendProblem pssh fails Problem psid does not startup, reports port in useProblem processes cannot access files on remote nodes Reference Pages ParaStation5 Administrators Guide InstallDir inst-dir , InstallationDir inst-dir Parastation.confDescription ParametersSetupscript StartscriptStopscript StatusscriptP4sock OpenibMvapi ElanAccounter NrOfNodes numNode node17 16 HWType ethernet p4sock starter yes runJobs no $GENERATE 1-96 node$0,2 $0SelectTime time DeadInterval numLogLevel num MCastGroup group-numCore size CPUTime timeDataSize size MemLock sizeProc Processes maxprocs CPUmap mapRdpTimeout ms StatusTimeout msRdpClosedTimeout ms RdpResendTimeout msErrors See alsoParaStation5 Administrators Guide Psiadmin SynopsisOptions Standard Error Standard InputStandard Output Extended descriptionExit AllAllproc cnt count Count hw hw DownHardware LoadRdp Summary max maxQuit Accounters nodes User nodesGroup nodes Maxproc nodesMaster nodes FreeOnSuspend nodesHandleOldBins nodes NodesSort nodesCpumap nodes Rlrss nodesRdpTimeout nodes StatusTimeout nodesRdpClosedTimeout nodes RdpResendTimeout nodesResolve nodes Restart nodesSelecttime time nodes Psiddebug mask nodesPattern Name Description HandleOldBins 0 1 nodes Rdpmaxretrans val nodes RdpTimeout ms nodes StatusTimeout ms nodesRdpClosedTimeout ms nodes RdpResendTimeout ms nodesFiles QuietNormal VerbosePsid Configfile=file Debug=levelLogfile=file Testconfig FilenameNum ? , --usage Show a help messageParaStation5 Administrators Guide Testnodes Np numCnt num MapParaStation5 Administrators Guide Testpse Testpse -npnumParaStation5 Administrators Guide P4stat SockNet ?,--helpParaStation5 Administrators Guide P4tcp AddDelete ParaStation5 Administrators Guide Psaccounter Pattern DescriptionDumpcore Coredir=dir?, --help Var/account/yyyymmdd Accounting files, one per dayPsaccview Lj,--ljobs Lu,--ltotuserLg,--ltotgroup Ls,--ltotsumCpuweight AqtimeCputime EndInitialization file Mlisten ParaStation5 Administrators Guide Appendix A. Quick Installation Guide # /opt/parastation/bin/psiadmin psiadmin add # chkconfig -a /etc/init.d/parastationTesting Appendix B. ParaStation license Page Page Page Building and installing ParaStation5 packages # psiadmin -sAppendix C. Upgrading ParaStation4 to ParaStation5 Changes to the runtime environmentPage Glossary ARPSee ParaStation Logger To share a common address space within a node ParaStation5 Administrators Guide