Pre-crash status

[anonymous]

Hi Sherpa Team,

I have just tried to generate Z + 0,1,2,3,4 jets events in Sherpa-1.0.11 but when Sherpa generates its libraries it complains with this error:

In String_Handler::Complete : this may take some time.... Single_Process::CheckLibraries : Looking for a suitable library. This may take some time. Sherpa: throws std::exception St9exception ... Exception_Handler::GenerateStackTrace(..): Generating stack trace (adapted from ROOT version 3.10) {

0xa5385840 in '_ZN6ATOOLS17Exception_Handler18GenerateStackTraceERSobRKSs'

from '/local/scratch/cakir/SHERPA/SHERPA-MC-1.0.11/lib/SHERPA-MC/libToolsOrg.so.0'

0xa5386340 in '_ZN6ATOOLS17Exception_Handler9TerminateEv'

from '/local/scratch/cakir/SHERPA/SHERPA-MC-1.0.11/lib/SHERPA-MC/libToolsOrg.so.0'

0xa5387590 in '_ZN6ATOOLS9TerminateEv'

from '/local/scratch/cakir/SHERPA/SHERPA-MC-1.0.11/lib/SHERPA-MC/libToolsOrg.so.0'

0x0 in '<unknown>'

from '/usr/lib/libstdc++.so.6'

0x0 in '<unknown>'

from '/usr/lib/libstdc++.so.6'

0x8049420 in 'main'

from './Sherpa'

0xa53fcde0 in 'libc_start_main'

from '/lib/tls/libc.so.6'

0x80492a0 in 'gxx_personality_v0'

from './Sherpa'

} Exception_Handler::Terminate(): Pre-crash status saved to '/local/scratch/cakir/SHERPA/SHERPA-MC-1.0.11/SHERPA-1.0.11/Run/StatusThu_Feb7_12-24-02_2008'. Exception_Handler::Exit: Exiting Sherpa with code (0) Return_Value::PrintStatistics(): Statistics {

Generated events: 0

} Time: 15050.6 s (clocks=1.50506e+06) on Thu Feb 7 12:24:09 2008

(User: 14288.8 s ,System: 285.29 s ,Children User: 10.26 s ,Children System: 300.67)

Actually when i generate Z + 0,1,2,3 jets i am able to get convenient hepmc ouput and everythings is ok but the library in case "P2_6" complains one channel and it gives an error.

Best

[Frank Siegert]

Hi Altan,

I believe that Z + 4 jets is quite memory consuming (> 1GB). Can you make sure that you are not simply running out of memory?

Otherwise, can you send us a tarball of your setup files? Either attach them to this bug report or send them to ​support@sherpa-mc.de .

Cheers, Frank

PS: Is there any reason to stay anonymous, or do we have to improve our bug filing interface to make it clearer?

[cakir@cern.ch]

Hi Frank,

I think that it is failed due to the quite memory consuming as you said. I also attached tar file but the problems is clear due to the memory consuming. I have not succeed to generate Z+4jets up to now in our cluster and also my local computer which has really good configuration. Do you have a plan to get over this problem (big library) to get succesful generation.

All the best

Altan

[cakir@cern.ch]

ps: there is a no reason to be anonymous i have just forgetten to write my email.

Kind Regards

Altan

[Frank Siegert]

Hi Altan,

thanks for the feedback. Yes, there are plans for avoiding the big libraries for final states with multiple particles. But it is not ready yet, and will take a couple of months still. Whenever it is ready and released, you will be notified through our announcement mailing list.

I am closing this bug report now, but we will look into report #11, which was just opened about the same process (Z+4j) crashing although not running out of memory.

Cheers, Frank

[miaos]

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[Stefan Hoeche]

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