[Mauiusers] maui hangs/segfaults in 3.3.1

Steve Johnson steve at isc.tamu.edu
Tue Jul 17 12:56:57 MDT 2012


It looks like you have 17 CLASSCFG lines.  Have you increased MAX_MCLASS and 
MMAX_CLASS in include/msched-common.h?

// Steve


On 07/17/2012 12:42 PM, Paul Raines wrote:
>
> We have two separate clusters. One is an ancient cluster with nodes that are
> dual Opterons and 4G RAM.  The other is newer with dual quad Xeon E5472's and
> 32G RAM.  Recently we updated both clusters to CentOS6, torque-2.5.11 and
> maui 3.3.1.  So OS/software/config - wise they are identical.  I built
> torque/maui RPMs myself on an old Opteron node to install on both clusters.
>
> The older cluster has been running without any problems.  On the new one
> though maui keeps hanging or segfaulting within 1-8 hours of starting maui.
> I installed the debuginfo RPMS and run maui in the debugger.
>
> When it just hangs (doesn't crash but doesn't respond to any tools such
> as showq), this is what I see:
>
> =========================================================================
> (gdb) run -d
> Starting program: /usr/sbin/maui -d
> *** glibc detected *** /usr/sbin/maui: corrupted double-linked list:
> 0x000000000
> 7f106a0 ***
>
>
> ^C
> Program received signal SIGINT, Interrupt.
> 0x00000036cd2f542e in __lll_lock_wait_private () from /lib64/libc.so.6
> (gdb) bt
> #0  0x00000036cd2f542e in __lll_lock_wait_private () from /lib64/libc.so.6
> #1  0x00000036cd27bed5 in _L_lock_9323 () from /lib64/libc.so.6
> #2  0x00000036cd2797c6 in malloc () from /lib64/libc.so.6
> #3  0x00000036cca04c72 in local_strdup () from /lib64/ld-linux-x86-64.so.2
> #4  0x00000036cca08636 in _dl_map_object () from /lib64/ld-linux-x86-64.so.2
> #5  0x00000036cca12994 in dl_open_worker () from /lib64/ld-linux-x86-64.so.2
> #6  0x00000036cca0e176 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
> #7  0x00000036cca1244a in _dl_open () from /lib64/ld-linux-x86-64.so.2
> #8  0x00000036cd323520 in do_dlopen () from /lib64/libc.so.6
> #9  0x00000036cca0e176 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
> #10 0x00000036cd323677 in __libc_dlopen_mode () from /lib64/libc.so.6
> #11 0x00000036cd2fbd51 in backtrace () from /lib64/libc.so.6
> #12 0x00000036cd26f98b in __libc_message () from /lib64/libc.so.6
> #13 0x00000036cd275296 in malloc_printerr () from /lib64/libc.so.6
> #14 0x00000036cd277efa in _int_free () from /lib64/libc.so.6
> #15 0x0000000000466136 in MUFree (Ptr=0x46bfbd0) at MUtil.c:460
> #16 0x00000000004499a5 in MUserDestroy (UP=0x46bfbd0) at MUser.c:682
> #17 0x00000000004499de in MUserFreeTable () at MUser.c:700
> #18 0x00000000004ac48f in MSysShutdown (Signo=0) at MSys.c:2540
> #19 0x0000000000418361 in UIProcessClients (SS=0x774d270,
>       TimeLimit=<value optimized out>) at UserI.c:527
> #20 0x0000000000405bb8 in main (ArgC=2, ArgV=<value optimized out>)
>       at Server.c:240
> (gdb) quit
> =========================================================================
>
>
> When it crashes this is what I see
>
> =========================================================================
> (gdb) run -d
> Starting program: /usr/sbin/maui -d
>
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000036cd265ee7 in _IO_fflush (fp=0x7f0d010) at iofflush.c:43
> 43            result = _IO_SYNC (fp) ? EOF : 0;
> (gdb)
> (gdb) bt
> #0  0x00000036cd265ee7 in _IO_fflush (fp=0x7f0d010) at iofflush.c:43
> #1  0x000000000047c07b in MJobWriteStats (J=0x9b61080) at MJob.c:7815
> #2  0x000000000048643e in MJobProcessCompleted (J=0x9b61080) at MJob.c:9562
> #3  0x00000000004a6eb8 in MPBSWorkloadQuery (R=0x6a4b2e0,
>       JCount=0x7ffffff7b938, SC=<value optimized out>) at MPBSI.c:871
> #4  0x000000000045f926 in __MUTFunc (V=0x7ffffff7b830) at MUtil.c:4718
> #5  0x0000000000462387 in MUThread (F=<value optimized out>,
>       TimeOut=<value optimized out>, RC=<value optimized out>,
>       ACount=<value optimized out>, Lock=<value optimized out>) at MUtil.c:4691
> #6  0x0000000000498ed4 in MRMWorkloadQuery (WCount=0x7ffffff7b98c, SC=0x0)
>       at MRM.c:595
> #7  0x000000000049cb19 in MRMGetInfo () at MRM.c:364
> #8  0x000000000042dc42 in MSchedProcessJobs (OldDay=0x7fffffffde40 "Tue",
>       GlobalSQ=0x7ffffffdbe30, GlobalHQ=0x7ffffffbbe30) at MSched.c:6930
> #9  0x0000000000405c46 in main (ArgC=2, ArgV=<value optimized out>)
>       at Server.c:192
> (gdb) frame
> #0  0x00000036cd265ee7 in _IO_fflush (fp=0x7f0d010) at iofflush.c:43
> 43            result = _IO_SYNC (fp) ? EOF : 0;
> (gdb) frame 1
> #1  0x000000000047c07b in MJobWriteStats (J=0x9b61080) at MJob.c:7815
> 7815        fflush(MSched.statfp);
> (gdb) list MJob.c:7815
> 7810
> 7811      if (MJobToTString(J,DEFAULT_WORKLOAD_TRACE_VERSION,Buf,sizeof(Buf))
> == SUCCESS)
> 7812        {
> 7813        fprintf(MSched.statfp,"%s",Buf);
> 7814
> 7815        fflush(MSched.statfp);
> 7816
> 7817        DBG(4,fSTAT) DPrint("INFO:     job stats written for '%s'\n",
> 7818          J->Name);
> 7819        }
> (gdb) p Buf
> $3 = "16828", ' ' <repeats 18 times>, "0   1    coutu     coutu  345600
> Completed  [max100:1] 1342534818 1342534819 1342534819 1342535999    [NONE]
> [NONE] [NONE] >=    0M >=      0M   [nonGPU] 1342534818   1    1
> [NONE]:DEFA"...
> (gdb)
> =========================================================================
>
> My guess is some memory corruption has overwritten MSched.statfp which is
> just a file handle and thus fflush crashes when it actually tries to
> write to it.   WHere that overwrite is occuring though is anyone's guess.
>
> I am hoping someone on this list might have a clue.  It is really a mystery
> to me why I only see this on one cluster. They are exactly the same config
> except for host name.  Here is my maui.cfg
>
> =========================================================================
> ADMIN1                maui root
> ADMIN3                ALL
> ADMINHOST               launchpad.nmr.mgh.harvard.edu
> BACKFILLPOLICY        FIRSTFIT
> CLASSCFG[default] MAXPROCPERUSER=150
> CLASSCFG[extended] MAXPROCPERUSER=50 MAXPROC=250
> CLASSCFG[GPU] MAXPROCPERUSER=5000
> CLASSCFG[matlab] MAXPROCPERUSER=60
> CLASSCFG[max100] MAXPROCPERUSER=100
> CLASSCFG[max10] MAXPROCPERUSER=10
> CLASSCFG[max200] MAXPROCPERUSER=200
> CLASSCFG[max20] MAXPROCPERUSER=20
> CLASSCFG[max50] MAXPROCPERUSER=50
> CLASSCFG[max75] MAXPROCPERUSER=75
> CLASSCFG[p10] MAXPROCPERUSER=5000
> CLASSCFG[p20] MAXPROCPERUSER=5000
> CLASSCFG[p30] MAXPROCPERUSER=5000
> CLASSCFG[p40] MAXPROCPERUSER=5000
> CLASSCFG[p50] MAXPROCPERUSER=30
> CLASSCFG[p5] MAXPROCPERUSER=5000
> CLASSCFG[p60] MAXPROCPERUSER=20
> CLASSWEIGHT           10
> ENABLEMULTIREQJOBS TRUE
> ENFORCERESOURCELIMITS   OFF
> LOGFILEMAXSIZE        1000000000
> LOGFILE               /var/spool/maui/log/maui.log
> LOGLEVEL              2
> NODEALLOCATIONPOLICY  PRIORITY
> NODECFG[DEFAULT] PRIORITY=1000 PRIORITYF='PRIORITY + 3 * JOBCOUNT'
> QUEUETIMEWEIGHT       1
> RESERVATIONPOLICY     CURRENTHIGHEST
> RMCFG[base]             TYPE=PBS
> RMPOLLINTERVAL          00:00:30
> SERVERHOST              launchpad.nmr.mgh.harvard.edu
> SERVERMODE              NORMAL
> SERVERPORT              40559
> USERCFG[DEFAULT] MAXIPROC=8
> USERCFG[jonghwan] MAXPROC=300
> USERCFG[shafee] MAXPROC=300
>
> I actually changed the LOGLEVEL from 3 to 2 at one point thinking the
> error is happening when writing to the log and lowering the amount it
> writes might affect things, but it didn't help
>
> ---------------------------------------------------------------
> Paul Raines                     http://help.nmr.mgh.harvard.edu
> MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging
> 149 (2301) 13th Street     Charlestown, MA 02129	    USA
>
>
>
>
>
> The information in this e-mail is intended only for the person to whom it is
> addressed. If you believe this e-mail was sent to you in error and the e-mail
> contains patient information, please contact the Partners Compliance HelpLine at
> http://www.partners.org/complianceline . If the e-mail was sent to you in error
> but does not contain patient information, please contact the sender and properly
> dispose of the e-mail.
>
> _______________________________________________
> mauiusers mailing list
> mauiusers at supercluster.org
> http://www.supercluster.org/mailman/listinfo/mauiusers
>



More information about the mauiusers mailing list