[Gate-users] filemerger...

Samuel BURG samuel_burg at yahoo.fr
Tue Oct 23 12:42:52 CEST 2007


Dear MJ, 

for me it also bug for medium and huge files.
(ex : 100 files of 20Mo, or 50 files of 2Mo) 

my laptop have 2Go Ram, 120GoHDD, CPU Core2Duo...
and the bug is the same when data size is > or < of the remaining free memory.

same issue on the cluster with 750Go free disk space, and 1 or 2 Go Ram per node.

so I'm not certain it's a memory space issue.

Good luck,

Samuel Burg

Park MinJae <MJ at ToTi.us> a écrit :     Dear Samuel,
  
 It works for small root files...
  
 however, it does not work for big root files,  though...
  
 Is it a problem with memory size?
  
 I set the memory 768M on my vmware  machine...
  
 I set the memory 1536M to test memory size...but I got the  same error...T__T
  
 MJ
  
//=================================================
//  Park  MinJae
//  SNU BME Ph.D. Candidate
//
//   DialTo:+82-17-711-7809
//  MailTo:MJ at ToTi.us
//
//  Make the Dream  True...
//=================================================   
  

  
---------------------------------
 From: gate-users-bounces at lists.healthgrid.org  [mailto:gate-users-bounces at lists.healthgrid.org] On Behalf Of Samuel  BURG
Sent: Tuesday, October 23, 2007 7:09 PM
To: Park  MinJae; Users Gate
Subject: RE : RE: [Gate-users]  filemerger...


 
Dear MJ,

I have also lot of problems with gjm.
One 'easy'  solution is to do a 'fast merge' with gjm and the to use a TChain under ROOT to  post-process your (multiple files) data.

Pro : it works, no need to  update any code
Cons : files 25% bigger, not very fun

Hope it will  help you,

regards,

Samuel Burg
Park MinJae  <MJ at ToTi.us> a écrit : 
Dear    Jan,

I attached a file with sample root, macro files and gjm    also.

I tried with small root files...
[My real root files are over    600M]

It said a little bit different message...

shell>    ../gate_v3.1.2/Cluster_Tools/filemerger/gjm mj_test.mac
Combining:    /home/turbo978/crosstalk/act21.root
/home/turbo978/crosstalk/act22.root    -> act2.root
Cannot find one of: runID, eventID, time in Gate
Problem    with merging Gate

*** Break *** segmentation violation
Generating    stack trace...
0xb6b3f309 in __libc_free + 0x49 from    /lib/tls/i686/cmov/libc.so.6
0xb6ce08b1 in operator delete(void*) + 0x21    from /usr/lib/libstdc++.so.6
0x0804a3c5 in from    ../gate_v3.1.2/Cluster_Tools/filemerger/gjm
0xb6af0ea2 in __libc_start_main    + 0xd2 from /lib/tls/i686/cmov/libc.so.6
0x08049db1 in __gxx_personality_v0    + 0x6d    from
../gate_v3.1.2/Cluster_Tools/filemerger/gjm
Aborted

and...I    remind this mail in gate mailling list...
From:    gate-users-bounces at lists.healthgrid.org on behalf of    Hannes
---------------------------
Hofmann [opengate at f00f.de]
Sent:    2007³â 10¿ù 10ÀÏ ¼ö¿äÀÏ ¿ÀÈÄ 5:51
To:    gate-users at lists.healthgrid.org
Subject: [Gate-users] filemerger    BUG

Hi,

I think I have found an error in the filemerger    gjm:

In the method

bool GateMergeManager::MergeTree(string    chainName){

in file src/GateMergeManager.cc I believe a 'return' is    missing on line 467
which should IMHO look like    this:

if(chainName=="Gate") return MergeGate(chain);

Otherwise    it will run into the error
"Cannot find one of: runID, eventID, time in    Gate" (line    482)

Regards,
Hannes
--------------------------------

so I    change the source as the mail said...
but, I still got this error    message...
-------------------------------
*** Break *** segmentation    violation
Generating stack trace...
0xb6a5b309 in __libc_free + 0x49    from /lib/tls/i686/cmov/libc.so.6
0xb6bfc8b1 in operator delete(void*) +    0x21 from /usr/lib/libstdc++.so.6
0x0804a3c5 in from    ../gate_v3.1.2/Cluster_Tools/filemerger/gjm
0xb6a0cea2 in __libc_start_main    + 0xd2 from /lib/tls/i686/cmov/libc.so.6
0x08049db1 in __gxx_personality_v0    + 0x6d    from
../gate_v3.1.2/Cluster_Tools/filemerger/gjm
Aborted
------------------------------

Is    my linux wierd?    T__T

Thanks,
MJ

//=================================================
//    Park MinJae
// SNU BME Ph.D. Candidate
//
//    DialTo:+82-17-711-7809
// MailTo:MJ at ToTi.us
//
// Make the Dream    True...
//=================================================    

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