[BUG] SVD did not converge while trying to sample flux solutions

[nnursimulu]

Is there an existing issue for this?

• I have searched the existing issues

Problem description

I am trying to sample multiple flux solutions for my model with the code snippet that follows.

I keep getting an error that SVD did not converge. My model is quite big, so I decided to try to remove blocked reactions from the model. However, this does not change anything: the SVD still does not converge. Do you have any recommendation for how I can fix this?

Code sample

Code run:

optgp = cb.sampling.OptGPSampler(model, processes=40)
df_mult = optgp.sample(100)

Traceback:

SVD did not converge

Environment

### Package Information

Package	Version
cobra	0.29.0

Anything else?

No response

[cdiener]

Hi, did you monitor the RAM usage here. I have seen that error pop up when the sampler runs out of RAM. With that many processes RAM usage will be significant.

[nnursimulu]

Thank you for your response. I was running this on a computer cluster and had significant RAM available. Did you have any strategies for solving this, other than maybe increasing the RAM available?