When the following situations occur, the memory will increase

[Ryuk17]

When the following situations occur, the memory will increase

[danpovey]

there should be some kind of max-memory option or max-bytes, something like that, you can change that.
there must be something quite strange about your audio or your graph, to blow up in such a tiny beam (effective beam was -3.14713e-05 ).

[Ryuk17]

Hi dan, thanks for your reply. I make a graph for keyword spotting. There are some keywords path and garbage paths in TLG. When the input audio contains no keywords, sometimes，the effective beam is tiny, any suggestion to avoid this problem?

[danpovey]

I think most likely for a KWS search problem you would not really need lattice determinization, the easiest fix may be to just skip that step and get the best path directly. Some (maybe all) decoders have a function call where you can get the best path without requesting the lattice at all.