The save of the TenSEALContext object is interrupted.

[Coldfire93]

The following code I used before works ok :
`
import tenseal as ts
import copy
import os

ctx = ts.context(ts.SCHEME_TYPE.CKKS, 8192, 0, [60, 40, 40, 60])
ctx.global_scale = pow(2, 40)
ctx.generate_galois_keys()
ctx_copy = copy.deepcopy(ctx)
ctx_copy.make_context_public()

path = "/tmp/vlr"
with open(os.path.join(path, "ctx_whole"), "wb") as f:
f.write(ctx.serialize())
print("save whole context done.")
with open(os.path.join(path, "ctx_public"), "wb") as f:
f.write(ctx_copy.serialize())
print("save public context done.")
`

But when I changed the code in the fifth line to :
ctx = ts.context(ts.SCHEME_TYPE.CKKS, 16384, 0, [60, 40, 40, 40, 60])
The serialization of ctx_copy object can not be saved.
The error is:
Process finished with exit code 137 (interrupted by signal 9: SIGKILL)

I'm confused. I searched that the error is usually caused by the insufficient of memory.
I expanded the virtual machine's memory but it doesn't work. I wonder why the serialization of ctx object can be saved but the ctx_copy object goes wrong.
I would be appreciate if you could tell me the reason. Thank you!

[Coldfire93]

I run the code on my Mac. The code runs correctly. But the memory consumption is almost 100%.
And the file size of ctx object is 1.6 M, but the file size of ctx_copy object is 116.8 M.
Why?

[bcebere]

Hello,

Are you using TenSeal 0.3.0a1?

Most likely it is related to microsoft/SEAL#249

There was an issue with SEAL 3.6, and it was fixed in 3.6.1, and we integrated it in TenSEAL 0.3.0a1.

[bcebere]

Hello. Are you still experiencing this issue?

[Coldfire93]

Hello. Are you still experiencing this issue?

Sorry, I miss your reply. it has been solved. Thanks a lot.