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View Poll Results: What is the best denovo assembly strategy for Illumina+Roche 454 hybrid data ?
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Old 04-26-2013, 03:07 AM   #1
Junior Member
Location: Bangalore

Join Date: Apr 2013
Posts: 3
Default Ray : Segmentation fault (11)


I am trying to run Ray to do hybrid assembly of Illumina (paired end data) and Roche 454 data. I am running the program on server with 64 cores and 512GB RAM

I ran the sample data in Ray; which is working fine.
When I give my data, the program is producing Contigs.fasta output but, giving error before scaffolding.

I ran the following command
$ mpiexec -n 20 ray-build/Ray -k 31 -p mp_R1_trimmed_q20_p100_clipped.fastq mp_R2_trimmed_q20_p100_clipped.fastq -s 454.fastq -o kmer_31_out

After contig buildng program gave the following fault while scaffolding

*** Process received signal ***
Signal: Segmentation fault (11)
Signal code: Address not mapped (1)
Failing at address: 0x15b710
[ 0] /lib64/ [0x3dbd00f500]
[ 1] ray-build/Ray(_ZNK4Read6lengthEv+0) [0x50a9b0]
[ 2] ray-build/Ray(_ZN16MessageProcessor33call_RAY_MPI_TAG_GET_READ_MARKERSEP7Message+0x9f) [0x49c09f]
[ 3] ray-build/Ray(_ZN11ComputeCore10runVanillaEv+0x61) [0x532351]
[ 4] ray-build/Ray(_ZN11ComputeCore3runEv+0x6e) [0x53379e]
[ 5] ray-build/Ray(_ZN7Machine5startEv+0x1697) [0x4487a7]
[ 6] ray-build/Ray(main+0x3a) [0x443bba]
[ 7] /lib64/ [0x3dbc41ecdd]
[ 8] ray-build/Ray() [0x443a89]
*** End of error message ***
mpiexec noticed that process rank 19 with PID 21982 on node pragnya exited on signal 11 (Segmentation fault).

I tried to run the program with different number of ranks and kmers. But still stoping at scaffolding stage.

Can anyone please help
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