Bus error when writing concatenated adata


When I try to write my concatenated adata (adata.write_h5ad(filename='10x_outer.h5ad')), I run into Bus error. For the concatenation, I use join=‘outer’. When I use join=‘inner’, I get no problems.

The dataset is n_obs × n_vars = 3599109 × 34512 and I use 1024GB. Please advise.

Thanks and good day.

Are the objects are different sizes when you use “outer” vs “inner”, could you share that?

Also what types of matrices do you have in this object? Anything dense?