Bug #1202: Unable to simulate >40k events - MAUS - MICEmine

Bug #1202

Unable to simulate >40k events

Added by Carlisle, Timothy about 10 years ago. Updated about 10 years ago.

Status:

Rejected

Priority:

Normal

Assignee:

Rogers, Chris

Category:

Simulation

Target version:

MAUS-v0.4.3

Start date:

07 January 2013

Due date:

% Done:

Estimated time:

Workflow:

New Issue

Description

Hi Chris,

I can't simulate with approx. more than 40,000 muon events, getting the error shown below:

(MAUS release version 0.4.1) verbose set to debug.
INPUT: Setting up input PIPELINE: Get event, TRANSFORM, MERGE, OUTPUT, repeat HINT: MAUS will process 1 event only at first... MERGE: Setting up merger TRANSFORM: Setting up transformer Written 1 event(s) to file. Written 1 event(s) to file. Opening TFile Sim_0mm_1MeVc_50000mu_1e-08nsec_IV_Fe_m1__m0.4.1_MuSc__.root Opening TFile using existing tree Spill terminate called after throwing an instance of 'std::bad_alloc' what(): St9bad_alloc

and no output is given. All the scripts work fine for say 30k events. Any ideas? Cards attached.

Thanks,

Tim

Files

Cards_530.py (1.09 KB) Cards_530.py

Carlisle, Timothy, 07 January 2013 14:48

Updated by Rogers, Chris about 10 years ago

Priority changed from Normal to Urgent

Ack, sounds bad...

Updated by Rogers, Chris about 10 years ago

Priority changed from Urgent to Normal

Sorry for the delay in replying, my brain was stuck in other stuff. So the problem is memory usage I believe. You have 50k particles in a single spill, MAUS buffers data spill-by-spill so it holds all the data for a particular spill in memory at a given time. The problem is that data associated with 50k particles actually have quite a large memory footprint. So you should split the spill up into several smaller spills to make this work... sorry about that.