OpenMP / Pybind11: Accessing Python object in for loop returns interned string error Question: I am trying to use OpenMP on a list of Python objects by using Pybind11 in C++. I transform this list in an std::vector of Python objects (as explained in this post) and then try to access them in a parallelized …
Xgboost throws an error when trying to import Question: I have a project that is using xgboost. We now transfer the project to containers. But after installing it using pip, it throws the following error: Traceback (most recent call last): File “restart_db.py”, line 5, in <module> from autoai.core.providers import GlobalEnrichmentProvider File “/volumes/code/autoai/core/providers/__init__.py”, line 1, in …
Performance degradation of matrix multiplication of single vs double precision arrays on multi-core machine Question: UPDATE Unfortunately, due to my oversight, I had an older version of MKL (11.1) linked against numpy. Newer version of MKL (11.3.1) gives same performance in C and when called from python. What was obscuring things, was even if linking …
OpenMP and Python Question: I have experience in coding OpenMP for Shared Memory machines (in both C and FORTRAN) to carry out simple tasks like matrix addition, multiplication etc. (Just to see how it competes with LAPACK). I know OpenMP enough to carry out simple tasks without the need to look at documentation. Recently, I …
Python and OpenMP C Extensions Question: I have a C extension in which I’d like to use OpenMP. When I import my module, though, I get an import error: ImportError: /home/…/_entropysplit.so: undefined symbol: GOMP_parallel_end I’ve compiled the module with -fopenmp and -lgomp. Is this because my Python installation wasn’t compiled with the -fopenmp flag? Will …
