segmentation fault ypp

[michele guerrini]

Hello yambo developers, I am experiencing some issues when I try to plot the exciton wavefunction as I get the following error when running ypp in interacting mode:

Code: Select all

|   Y  ||  _  ||  Y  ||  _  \ |  _  |
|   |  ||. |  ||.    ||. |  / |. |  |
 \_  _/ |. _  ||.\_/ ||. _  \ |. |  |
  |: |  |: |  ||: |  ||: |   \|: |  |
  |::|  |:.|:.||:.|:.||::.   /|::.  |
  `--"  `-- --"`-- --"`-----" `-----"


 <---> [01] CPU structure, Files & I/O Directories
 <---> [02] Y(ambo) P(ost)/(re) P(rocessor)
 <---> [03] Core DB
 <---> :: Electrons             : 194.0000
 <---> :: Temperature       [ev]: 0.000000
 <---> :: Lattice factors [a.u.]: 17.18139  16.73227  14.74106
 <---> :: K points              :  36
 <---> :: Bands                 :  600
 <---> :: Symmetries            : 2
 <---> :: RL vectors            : 233551
 <---> [04] K-point grid
 <---> :: Q-points   (IBZ):  36
 <---> :: X K-points (IBZ):  36
 <---> [05] CORE Variables Setup
 <---> [05.01] Unit cells
 <---> [05.02] Symmetries
 <---> [05.03] RL shells
 <---> [05.04] K-grid lattice
 <---> [05.05] Energies [ev] & Occupations
 <---> [06] Excitonic Properties
 <---> :: Sorting energies
 <01s> [06.01] Excitonic Wave Function
 <01s> [06.01.01] Real-Space grid setup
 <01s> [WF] Performing Wave-Functions I/O from ./SAVE
 <01s> [FFT-EXCWF] Mesh size:  35   35   42Segmentation fault

I attach also the input

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#                                                           
#  __  __   ________   ___ __ __    _______   ______        
# /_/\/_/\ /_______/\ /__//_//_/\ /_______/\ /_____/\       
# \ \ \ \ \\::: _  \ \\::\| \| \ \\::: _  \ \\:::_ \ \      
#  \:\_\ \ \\::(_)  \ \\:.      \ \\::(_)  \/_\:\ \ \ \     
#   \::::_\/ \:: __  \ \\:.\-/\  \ \\::  _  \ \\:\ \ \ \    
#     \::\ \  \:.\ \  \ \\. \  \  \ \\::(_)  \ \\:\_\ \ \   
#      \__\/   \__\/\__\/ \__\/ \__\/ \_______\/ \_____\/   
#                                                           
#                                                           
# GPL Version 4.3.2 Revision 134. (Based on r.15658 h.afdb12
#                      Serial Build                         
#                http://www.yambo-code.org                  
#
excitons                       # [R] Excitons
wavefunction                   # [R] Wavefunction
Format= "x"                    # Output format [(c)ube/(g)nuplot/(x)crysden]
Direction= "123"                 # [rlu] [1/2/3] for 1d or [12/13/23] for 2d [123] for 3D
FFTGvecs=  20000       RL      # [FFT] Plane-waves
States= "4"                # Index of the BS state(s)
Degen_Step=   0   eV      # Maximum energy separation of two degenerate states
% Cells
 3 | 3 | 3 |                             # Number of cell repetitions in each direction (odd or 1)
%
% Hole
 -3.472     | 2.189     | 9.230     |        # [cc] Hole position in unit cell
%

[Daniele Varsano]

Dear Michele,
it is hard to spot the problem with this information and the poor error message.
Can it be an allocation problem in the interactive node?
You can try to reduce the FFTGvecs and see if this is the problem.

Best,
Daniele