[pytables-users] Problem with cArray and BLOSC (Could not wait on barrier (init))

[Luca Pinello]

I have a huge matrix stored in a carray with Float32 :

/matrix_computed (CArray(1236248, 1236248), shuffle, blosc(1)) ''


Often when I try to load submatrix using the slicing notation (for example m[5000:10000,5000:10000]) I get the following error andeverything freeze:


*Could not wait on barrier (init)*

I suspect this is due to the BLOSC threading implementation since when
using max_blosc_threads=1 the problem doesn't occur.

Is this a known bug?

Thanks!

Luca