Unconfigured Ad

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • dpryan
    replied
    Just to add to par's response, if there isn't a per-command log, then just run the last command you find in the run log manually and you'll see the (typically vastly more informative) error message.

    Leave a comment:


  • par
    replied
    tophat is a Python script that calls a number of helper programs (Bowtie2 plus a number of TopHat-specific programs). The broken pipe implies a problem communicating with one of the sub-programs, most likely because it died unexpectedly.

    You might try looking in folder1/logs for a run.log file that will show all of the sub-commands that tophat runs. There should also be per-sub-command .log files as well that you could look through with the goal of figuring out (1) which command died and (2) whether it left a more specific error message anywhere.

    Leave a comment:


  • super0925
    started a topic Tophat2 error ! Broken pipe!

    Tophat2 error ! Broken pipe!

    Hi all I am running tophat2 on my proton fastq data reads and have this error which I haven't faced before.
    Could you tell me what happened?!

    (Sorry for trouble every one , the problem has been sorted! because I didn't have enough space......)

    My command:
    tophat2 -o folder1 -p 12 --library-type fr-firststrand --keep-fasta-order --GTF genes.gtf Bowtie2Index sample1.fastq

    The error is:

    [2014-04-30 14:28:28] Beginning TopHat run (v2.0.10)
    -----------------------------------------------
    [2014-04-30 14:28:28] Checking for Bowtie
    Bowtie version: 2.1.0.0
    [2014-04-30 14:28:28] Checking for Samtools
    Samtools version: 0.1.19.0
    [2014-04-30 14:28:28] Checking for Bowtie index files (genome)..
    [2014-04-30 14:28:28] Checking for reference FASTA file
    [2014-04-30 14:28:28] Generating SAM header for ./Bos_taurus/Ensembl/Btau_4.0/Sequence/Bowtie2Index/genome
    [2014-04-30 14:28:30] Reading known junctions from GTF file
    [2014-04-30 14:28:33] Preparing reads
    left reads: min. length=16, max. length=320, 65134842 kept reads (3312 discarded)
    Warning: short reads (<20bp) will make TopHat quite slow and take large amount of memory because they are likely to be mapped in too many places
    [2014-04-30 14:43:49] Building transcriptome data files folder1/tmp/genes
    [2014-04-30 14:43:57] Building Bowtie index from genes.fa
    [2014-04-30 14:45:17] Mapping left_kept_reads to transcriptome genes with Bowtie2
    [2014-04-30 15:00:59] Resuming TopHat pipeline with unmapped reads
    [2014-04-30 15:00:59] Mapping left_kept_reads.m2g_um to genome genome with Bowtie2
    Traceback (most recent call last):
    File "/software/bin/tophat", line 4084, in <module>
    sys.exit(main())
    File "/software/bin/tophat", line 4050, in main
    user_supplied_deletions)
    File "/software/bin/tophat", line 3541, in spliced_alignment
    segment_len)
    File "/software/bin/tophat", line 2977, in split_reads
    split_record(read_name, read_seq, read_quals, out_segfiles, offsets, params.read_params.color)
    File "/software/bin/tophat", line 2925, in split_record
    print >> f, "%s|%d:%d:%d" % (read_name,last_seq_offset,seg_num, len(offsets) - 1)
    IOError: [Errno 32] Broken pipe
    Last edited by super0925; 05-02-2014, 07:01 AM. Reason: sorry for trouble every one , it is sorted!!!

Latest Articles

Collapse

  • SEQadmin2
    From Collection to Sequencing: Why Sample Preparation and Preservation Define Sequencing Data
    by SEQadmin2


    Data variability is still an issue in sequencing technologies despite the advances in reproducibility and accuracy of these platforms. But the problem does not originate in the sequencing itself, but in the previous steps, before the sample reaches the sequencer.


    The first step is collection, followed by preservation and sample preparation for analysis. Most scientists overlook those steps, but not being careful might just be skewing the experiment’s results.
    ...
    06-02-2026, 10:05 AM
  • SEQadmin2
    Single-Cell Sequencing at an Inflection Point: Early Impacts of New Platforms and Emerging Trends
    by SEQadmin2


    With the launch of new single-cell sequencing platforms in 2026, the field stands at an exciting inflection point. This article surveys the most impactful advances in the field and discusses how they’re reshaping research in cancer, immunology, and beyond.


    Introduction

    Single-cell sequencing technologies have undergone remarkable advances over the past decade, transitioning from low-throughput experimental approaches to highly scalable platforms capable of...
    05-22-2026, 06:42 AM
  • SEQadmin2
    Environmental Genomics in the Age of NGS: From Microbes to Conservation Strategies
    by SEQadmin2

    Studying ecosystems means dealing with complex, multi-species communities that are hard to observe at scale. This complexity, however, hides many important questions to be answered, from how biogeochemical cycles work and how climate change can affect species distribution to how conservation strategies can work best.


    Genomics, particularly since the expansion of NGS, has transformed ecosystem ecology. By sequencing environmental DNA, we can now assess biodiversity without direct...
    05-06-2026, 09:04 AM

ad_right_rmr

Collapse

News

Collapse

Topics Statistics Last Post
Started by SEQadmin2, Yesterday, 08:59 AM
0 responses
13 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 06-02-2026, 12:03 PM
0 responses
22 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 06-02-2026, 11:40 AM
0 responses
19 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 05-28-2026, 11:40 AM
0 responses
31 views
0 reactions
Last Post SEQadmin2  
Working...