[nvBWT] error : mismatching symbol frequencies!

[Quang Minh DAO]

Dear NVBio Team,

I am running nvBWT on Tesla P100-PCIE-12GB with 7,7 GB fasta file. 

I encountered problem "error   :   mismatching symbol frequencies!" comes from following condition in nvBWT.cu file (after debugging)

if (cumFreq[3] != seq_length)

        {

log_error(stderr, "  mismatching symbol frequencies!\n");

log_error(stderr, "    (%u, %u, %u, %u)\n", cumFreq[0], cumFreq[1], cumFreq[2], cumFreq[3]);

exit(1);

        }

    }

I have 2 questions would like to ask NVBio Team

1 - What's the meaning of this condition? and how to pass it?

2 - Could I use nvBowtie with index generated from BWA or Bowtie2?

And also, I encountered some errors in making nvbio-1.0 from source and I passed with -i flag in make command. Does it impact with nvBWT and nvBowtie programs?

P/s: It seems this group has no longer supported, doesn't it? I hope there is someone in your team view my post :)

Best regards,

MinhDQ