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README.md

The NCBI SRA (Sequence Read Archive)

Contact:

email: sra@ncbi.nlm.nih.gov

Download

Visit our download page for pre-built binaries.

Change Log

Please check the CHANGES.md file for change history.

The SRA Toolkit

The SRA Toolkit and SDK from NCBI is a collection of tools and libraries for using data in the INSDC Sequence Read Archives.

ANNOUNCEMENT:

NIH has released a request for information (RFI) to solicit community feedback on new proposed Sequence Read Archive (SRA) data formats. Learn more and share your thoughts at https://go.usa.gov/xvhdr. The response deadline is July 17th, 2020. We’d encourage you all to share with your colleagues and networks, and respond if you are an SRA submitter or data user.

SRA Toolkit 2.10.8

kproc, fasterq-dump: fixed problem with seg-faults caused by too small stack used by threads kdbmeta: allow to work with remote runs kdb, vdb, vfs, sra-tools: fixed bug preventing use of path to directory created by prefetch if it ends with '/' vfs, sra-tools, ngs-tools: report an error when file was encrypted for a different ngc file prefetch: print error message when cannot resolve reference sequence vfs, prefetch: download encrypted phenotype files with encrypted extension vdb, sra-docker: config can auto-generate LIBS/GUID when in a docker container

SRA Toolkit 2.10.5 sratools: fixed a potential build problem in libutf8proc ncbi-vdb, ngs, ngs-tools, sra-tools: all Linux builds now use g++ 7.3 (C++11 ABI) prefetch: improvements were made to work in environments with bad network connections prefetch, sratools: fixed the names of the --min-size and --max-size command line arguments when running prefetch

SRA Toolkit 2.10.4 kns, sra-tools:: fixed errors when using ngc file

SRA Toolkit 2.10.3 sraxf, fasterq-dump, fastq-dump, sam-dump: fixed a problem resulting in a segmentation fault

Release 2.10.2 of sra-tools provides access to all the public and controlled-access dbGaP of SRA in the AWS and GCP environments (Linux only for this release). This vast archive's original submission format and SRA-formatted data can both be accessed and computed on these clouds, eliminating the need to download from NCBI FTP as well as improving performance.

The prefetch tool also retrieves original submission files in addition to ETL data for public and controlled-access dbGaP data.

With release 2.10.0 of sra-tools we have added cloud-native operation for AWS and GCP environments (Linux only for this release), for use with the public SRA. prefetch is capable of retrieving original submission files in addition to ETL data.

With release 2.9.1 of sra-tools we have finally made available the tool fasterq-dump, a replacement for the much older fastq-dump tool. As its name implies, it runs faster, and is better suited for large-scale conversion of SRA objects into FASTQ files that are common on sites with enough disk space for temporary files. fasterq-dump is multi-threaded and performs bulk joins in a way that improves performance as compared to fastq-dump, which performs joins on a per-record basis (and is single-threaded).

fastq-dump is still supported as it handles more corner cases than fasterq-dump, but it is likely to be deprecated in the future.

You can get more information about fasterq-dump in our Wiki at https://github.com/ncbi/sra-tools/wiki/HowTo:-fasterq-dump.

For additional information on using, configuring, and building the toolkit, please visit our wiki or our web site at NCBI

SRA Toolkit Development Team

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