Profilers

I use two profilers:

cProfile - https://docs.python.org/3/library/profile.html

line-profiler - https://pypi.org/project/line-profiler/

Requirements

python 3.10: module load itm-python/3.10

line-profiler : pip install line-profiler

gprof2dot : pip install gprof2dot

How to run?

Prepare a standard launch
Copy python directory from /gss_efgw_work/work/g2fjc/jintrac/v220922/python to some location on pfs for example: /pfs/work/g2pbloch/python (I use paths with my username, change them to ones with your username)
Change JINTRAC_PYTHON_DIR in rjettov (430 line) to python directory on pfs from step 2
Change run_python_driver (line 49) in /pfs/work/g2pbloch/python (I use paths with my username, change them to ones with your username):
cProfile : mpirun --allow-run-as-root -np $NPROC python -u -m cProfile -o jintrac.prof /pfs/work/g2pbloch/python/jintrac_imas_driver.py mpi
line-profiler : mpirun --allow-run-as-root -np $NPROC python -u -m kernprof -l /pfs/work/g2pbloch/python/jintrac_imas_driver.py mpi
When we use line-profiler we must add wrapper to profiling function. In this case we should add @profile upper jintrac_imas_driver function in jintrac_imas_driver.py :
function wrapper
```
@profile
def jintrac_imas_driver(params, components, mpi='no'):

    """JINTRAC-IMAS generic workflow driver."""
```
Run ./rjettov -S -I -p -x64 test v220922 g2fjc

cProfile analysis

To read data from test.prof we need python script. We can use e.g.

cprofile_script.py

import pstats
stats = pstats.Stats('test.prof')
stats.strip_dirs().sort_stats(pstats.SortKey.TIME).print_stats()

This script print data sorted by tottime column ( In tottime column is total time spent in the given function (and excluding time made in calls to sub-functions)). These are the first few lines of the result:

   Wed Nov 30 09:40:33 2022    test.prof

         19379745 function calls (19376063 primitive calls) in 164.514 seconds

   Ordered by: internal time

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
        3   81.304   27.101   81.304   27.101 {imas_3_37_0_ual_4_11_0._ual_lowlevel.ual_open_pulse}
  2891220   42.947    0.000   52.709    0.000 {imas_3_37_0_ual_4_11_0._ual_lowlevel.ual_read_data_array}
  2497358   16.127    0.000   16.127    0.000 {imas_3_37_0_ual_4_11_0._ual_lowlevel.ual_read_data_scalar}
  2899948    2.784    0.000    2.784    0.000 {built-in method numpy.zeros}
   815194    2.391    0.000    2.391    0.000 {method 'reduce' of 'numpy.ufunc' objects}
   427578    1.225    0.000    2.589    0.000 fromnumeric.py:38(_wrapit)
   815196    1.015    0.000    7.988    0.000 {built-in method numpy.core._multiarray_umath.implement_array_function}
   387616    0.876    0.000    2.809    0.000 fromnumeric.py:69(_wrapreduction)
   427578    0.848    0.000    0.848    0.000 {method 'reshape' of 'numpy.ndarray' objects}
   427578    0.685    0.000    3.358    0.000 fromnumeric.py:51(_wrapfunc)
   387785    0.684    0.000    0.684    0.000 {method 'items' of 'dict' objects}

Complete file is below:

We can also make an image from data:

Install gprof2dot : pip install gprof2dot
run : python -m gprof2dot -f pstats test.prof | dot -Tsvg -o output.svg

Example image looks like this ( output.svg is simplified image, output1.svg is complete image with full data):

Line-profiler analysis

To read data from jintrac_imas_driver.py.lprof run:

python -m line_profiler jintrac_imas_driver.py.lprof .

These are the first few lines of the results :

line-profiler result

Timer unit: 1e-06 s

Total time: 232.892 s
File: /pfs/work/g2pbloch/python/jintrac_imas_driver.py
Function: jintrac_imas_driver at line 721

Line #      Hits         Time  Per Hit   % Time  Line Contents
==============================================================
   721                                           @profile
   722                                           def jintrac_imas_driver(params, components, mpi='no'):
   723                                           
   724                                               """JINTRAC-IMAS generic workflow driver."""
   725                                           
   726                                               # Workflow configuration parameters
   727                                           
   728         1          5.9      5.9      0.0      user_in = wf.string(params, "Input IDS user")
   729         1          2.3      2.3      0.0      machine_in = wf.string(params, "Input IDS machine")
   730         1          4.7      4.7      0.0      shot_in = wf.integer(params, "Input IDS shot")
   731         1          2.1      2.1      0.0      run_in = wf.integer(params, "Input IDS run")
   732         1          2.9      2.9      0.0      user_out = wf.string(params, "Output IDS user")
   733         1          2.6      2.6      0.0      machine_out = wf.string(params, "Output IDS machine")
   734         1          2.6      2.6      0.0      shot_out = wf.integer(params, "Output IDS shot")
   735         1          2.6      2.6      0.0      run_out = wf.integer(params, "Output IDS run")
   736         1         13.3     13.3      0.0      user_tmp = os.environ['HOME']+'/public/tempdb'

Complete file is below:

Key lines from the results:

Key lines from line-profiler

Line #      Hits         Time  Per Hit   % Time  Line Contents
   895         1   62545203.7 62545203.7     26.9      alenv = ALEnv(user_temp=user_tmp)
   917        22   49496025.7 2249819.4     21.3                  ids_bundle_input[ids_struct] = eval('DBentry.idsin.get("'+ids_struct+'")')
   922         1   83745046.9 83745046.9     36.0      tmpdict = bundle_copy(ids_bundle_input)
   956         2    4665617.1 2332808.6      2.0                          ids_bundle_input[elem] = DBentry.idsin.get_slice(elem, tstart, 3)
   966         1    6353190.5 6353190.5      2.7      ids_bundle_work = bundle_copy(ids_bundle_input)
   967         1    7884627.8 7884627.8      3.4      ids_bundle_updated = bundle_copy(ids_bundle_input)
  1022         3   14539266.0 4846422.0      6.2          ids_bundle_prev[item] = bundle_copy(ids_bundle_work,imas_control.get_ids_sublist_updates(item))

Candidates for bottlenecks

From cProfile result can see that 85% execution time jintrac_imas_driver.py spend on imas functions. Function ual_open_pulse was called only 3 times. It execution time is 27s. Functions ual_read_data_array and ual_read_data_scalar was called more than 2 milions times.

From line-profiler we can see, that jintrac_imas_driver.py spends a lot of time in lins with functioin bundle_copy. This function call imas functions. A lot of time is also taken up by functions calls with DBentry.

Possible ways to speed up jintrac_imas_driver.py:

Reducing number of calls: ual_open_pulse, ual_read_data_array, ual_read_data_scalar

Summary of July Profiling

Line Profiler

Key lines from the results:

Key lines from the results

Timer unit: 1e-06 s
Total time: 155.404 s
File: /pfs/work/g2pbloch/jintrac/python/jintrac_imas_driver.py
Function: jintrac_imas_driver at line 735

Line #      Hits         Time  Per Hit   % Time  Line Contents
==============================================================
   957        22   44253622.5 2011528.3     28.5           ids_bundle_input[ids_struct] = eval('DBentry.idsin.get("'+ids_struct+'")')
   962         1   46906374.5 46906374.5     30.2          tmpdict = bundle_copy(ids_bundle_input)
   996         2    5116586.7 2558293.3      3.3           ids_bundle_input[elem] = DBentry.idsin.get_slice(elem, tstart, interp_value)
  1011         1    3447098.9 3447098.9      2.2           ids_bundle_work = bundle_copy(ids_bundle_input)
  1012         1    4400338.9 4400338.9      2.8           ids_bundle_updated = bundle_copy(ids_bundle_input)
  1067         3    6886544.4 2295514.8      4.4           ids_bundle_prev[item] = bundle_copy(ids_bundle_work,imas_control.get_ids_sublist_updates(item))
  1099         3   29669430.5 9889810.2     19.1           ids_bundle_updated_tmp = eval(imas_control.get_wrapper(item) + args)
  1105        11    4863627.8 442148.0      3.1            ids_bundle_updated[ids_struct].copyValues(ids_bundle_updated_tmp[ids_struct])
  1106        11    3643527.1 331229.7      2.3            ids_bundle_prev[item][ids_struct].copyValues(ids_bundle_updated_tmp[ids_struct])
  1114         1    4798639.4 4798639.4      3.1           ids_bundle_work = bundle_copy(ids_bundle_updated)
  

Total time: 12.4112 s
File: /pfs/work/g2pbloch/jintrac/python/jintrac_imas_driver.py
Function: jetto_wrapper at line 304
Line #      Hits         Time  Per Hit   % Time  Line Contents
==============================================================
   323         1          0.7      0.7      0.0      out_prof, out_src, out_trans, out_equil, out_summ, out_num, out_work \
   324         1    8768238.1 8768238.1     70.6                = jetto(in_prof, in_src, in_trans, in_equil, in_nbi,
   325         1          0.3      0.3      0.0                        in_pel, in_pulse, in_contr, in_summ, in_num, in_work)
   367         1    3589306.4 3589306.4     28.9      out_ids_bundle = bundle_copy(in_ids_bundle_work)

Complete file is below:

cProfiler

Key lines from the results

Wed Jul  5 09:31:02 2023    jintrac.prof

         207387232 function calls (178651380 primitive calls) in 151.148 seconds

   Ordered by: internal time

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
26076870/927   40.102    0.000   82.859    0.089 copy.py:128(deepcopy)
  3356451   24.272    0.000   36.639    0.000 {imas_3_38_1_ual_4_11_4._ual_lowlevel.ual_read_data_array}
778014/927    9.056    0.000   82.841    0.089 copy.py:227(_deepcopy_dict)
 53709341    7.111    0.000    7.111    0.000 {method 'get' of 'dict' objects}
        1    5.916    5.916    7.367    7.367 wrapper.py:48(jetto_actor)
  2959395    4.441    0.000    4.441    0.000 {imas_3_38_1_ual_4_11_4._ual_lowlevel.ual_read_data_scalar}
  4441187    4.234    0.000    4.234    0.000 {method '__deepcopy__' of 'numpy.ndarray' objects}
1556028/927    4.081    0.000   82.851    0.089 copy.py:259(_reconstruct)
  7099231    3.948    0.000    5.721    0.000 copy.py:243(_keep_alive)
 35834998    3.774    0.000    3.774    0.000 {built-in method builtins.id}
  3398693    3.110    0.000    3.110    0.000 {built-in method numpy.zeros}
  1005851    3.045    0.000    3.045    0.000 {method 'reduce' of 'numpy.ufunc' objects}
 18974180    2.106    0.000    2.106    0.000 copy.py:182(_deepcopy_atomic)
  1556028    1.918    0.000    1.921    0.000 {method '__reduce_ex__' of 'object' objects}
  8578377    1.660    0.000    1.660    0.000 {built-in method builtins.getattr}
   134159    1.607    0.000    1.607    0.000 {imas_3_38_1_ual_4_11_4._ual_lowlevel.ual_begin_arraystruct_action}
   509900    1.504    0.000    3.231    0.000 fromnumeric.py:38(_wrapit)
  1005853    1.383    0.000   10.248    0.000 {built-in method numpy.core._multiarray_umath.implement_array_function}
        1    1.212    1.212  151.202  151.202 jintrac_imas_driver.py:1(<module>)
  1274146    1.140    0.000    1.140    0.000 {method 'items' of 'dict' objects}
   495951    1.116    0.000    3.696    0.000 fromnumeric.py:69(_wrapreduction)
   509900    1.051    0.000    1.051    0.000 {method 'reshape' of 'numpy.ndarray' objects}

Complete file is below:

Possible bottlenecks

Process of copying data ( bundle_copy , copyValues ).
eval(imas_control.get_wrapper(item) + args) and eval(imas_control.get_wrapper(item) + args) take almost half of function time

Space shortcuts

Page tree

Table of Contents

Profilers

Requirements

How to run?

cProfile analysis

Line-profiler analysis

Candidates for bottlenecks

Summary of July Profiling

Line Profiler

cProfiler

Possible bottlenecks

Space shortcuts

Page tree

Python profiling

Table of Contents

Profilers

Requirements

How to run?

cProfile analysis

Line-profiler analysis

Candidates for bottlenecks

Summary of July Profiling

Line Profiler

cProfiler

Possible bottlenecks