Question: bwa index error : Floating point exception
gravatar for comma1993
3.0 years ago by
comma19930 wrote:

I have one sequence with size of 2.4G. And I built index with bwa using the following command: bwa index -a bwtsw test.fa But it stoppped with the error : [bwa_index] Pack FASTA... [bns_fasta2bntseq] Failed to allocate 0 bytes at bntseq.c line 303: Success And I changed the latest version BWA and it returned a different error : Floating point exception

Does anyone know the reason why the error come about? Thanks a lot!

bwa alignment software error • 1.9k views
ADD COMMENTlink written 3.0 years ago by comma19930

I would suspect that it's an issue with RAM. How much have you available? The RAM filled up and then the OS was unable to allocate any more.

Edit: the function at that line number in the C file is realloc (, which is indeed an attempt to allocate memory.

ADD REPLYlink modified 3.0 years ago • written 3.0 years ago by Kevin Blighe65k

Try to run it on a subset of the large sequence dump.

ADD REPLYlink written 3.0 years ago by Bioaln340
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