[torqueusers] 2 problems with torque-2.0.0p7

Garrick Staples garrick at usc.edu
Mon Jan 30 21:03:59 MST 2006


I think calloc() is still necessary.

On Mon, Jan 30, 2006 at 08:55:25PM -0700, David B Jackson alleged:
> Martin,
> 
>   Your patch is exactly right.  The latest 2.1.0 snapshot corrects this
> issue.  With this change in place, does your multi-homed host issue
> disappear?
> 
> Dave
> 
> > On Mon, Jan 30, 2006 at 05:22:39PM -0800, Martin Siegert wrote:
> >
> >> 2) this problem has to do with multi-homed hosts and is by far more
> >> serious as it stops me dead in my tracks:
> >>
> >> $PBS_HOME/server_name contains "b001"
> >> $PBS_HOME/torque.cfg contains "SERVERHOST b001"
> >>
> >> When I submit a job with qsub it returns jobids of the form
> >> 2345.<hostname>
> >> instead of 2345.b001. This used to work in torque-2.0.0p3 (which is the
> >> last version I used before switching to 2.0.0p7)! Thus, this broke
> >> somewhere in versions 2.0.0p4 - 2.0.0p7. The effect is that, e.g.,
> >>
> >> qdel 2345
> >>
> >> does not work anymore - I always have to enter the full jobid
> >> 2345.<hostname>, which is rather annoying and more importantly
> >> impossible to explain to users.
> >> I suspect that the problem is with pbs_server
> >
> > It appears that "TLoadConfig(Buffer,sizeof(Buffer))" in pbsd_main.c,
> > line 505, only reads the first 4 characters of the torque.cfg file.
> >
> > Consider the following code:
> >
> > #include <stdio.h>
> > #include <stdlib.h>
> >
> > int main (int argc, char *argv[]){
> > char *Buffer;
> > int BufSize;
> >
> >    BufSize = 65536*sizeof(char);
> >    Buffer = (char *)malloc(BufSize);
> >    printf("BufSize=%i, sizeof(Buffer)=%i\n", BufSize, sizeof(Buffer));
> > }
> >
> > When you run the corresponding program you get
> >
> > BufSize=65536, sizeof(Buffer)=4
> >
> > :-(
> >
> > In the older versions of torque Buffer was defined as
> >
> > char Buffer[65536];
> >
> > in which case sizeof(Buffer) has the desired result.
> > Thus, we either
> > 1) go back to the old version,
> > 2) use the code from qsub.c (which is very similar to the old version),
> > or use something like the following:
> >
> > --- src/server/pbsd_main.c.orig	Mon Jan 30 18:49:59 2006
> > +++ src/server/pbsd_main.c	Mon Jan 30 19:08:47 2006
> > @@ -452,6 +452,7 @@
> >    time_t last_jobstat_time;
> >    int    when;
> >
> > +  int    BufSize;
> >    char   *Buffer;
> >
> >    void	 ping_nodes A_((struct work_task *ptask));
> > @@ -476,7 +477,8 @@
> >
> >    ProgName = argv[0];
> >
> > -  Buffer=calloc(65536,sizeof(char));
> > +  BufSize=65536*sizeof(char);
> > +  Buffer=(char *)malloc(BufSize);
> >
> >    /* if we are not running with real and effective uid of 0, forget it */
> >
> > @@ -502,7 +504,7 @@
> >
> >    /* load/process config file first then override values with command
> > line parameters */
> >
> > -  if (TLoadConfig(Buffer,sizeof(Buffer)) == 0)
> > +  if (TLoadConfig(Buffer,BufSize) == 0)
> >      {
> >      char *ptr;
> >      char *tptr;
> >
> >
> > Cheers,
> > Martin
> >
> > --
> > Martin Siegert
> > Head, HPC at SFU
> > WestGrid Site Manager
> > Academic Computing Services                        phone: (604) 291-4691
> > Simon Fraser University                            fax:   (604) 291-4242
> > Burnaby, British Columbia                          email: siegert at sfu.ca
> > Canada  V5A 1S6
> > _______________________________________________
> > torqueusers mailing list
> > torqueusers at supercluster.org
> > http://www.supercluster.org/mailman/listinfo/torqueusers
> >
> 
> _______________________________________________
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> torqueusers at supercluster.org
> http://www.supercluster.org/mailman/listinfo/torqueusers

-- 
Garrick Staples, Linux/HPCC Administrator
University of Southern California
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