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I am trying to download data from the European Nucleotide Archive (ENA) using Aspera CLI however my downloads are getting stalled. I have downloaded several files earlier using the same tool but this is happening since last one month. I usually use the following command:

ascp -QT -P33001 -k 1 -i ~/.aspera/connect/etc/asperaweb_id_dsa.openssh era-fasp@fasp.sra.ebi.ac.uk:/vol1/fastq/ERR192/009/ERR1924229/ERR1924229.fastq.gz .

From a post on Beta Science, I learnt that this might be due to not limiting the download speed and hence tried usng the -l argument but was of no help.

ascp -QT -l 300m -P33001 -k 1 -i ~/.aspera/connect/etc/asperaweb_id_dsa.openssh era-fasp@fasp.sra.ebi.ac.uk:/vol1/fastq/ERR192/009/ERR1924229/ERR1924229.fastq.gz .

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Arindam Ghosh
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1 Answers1

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Your command works.

you might be overdriving your local network ?

how much bandwidth do you have ?

here "-l 300m" sets a target rate to 300 Mbps, if you have less than 30, this can cause such problems.

try to reduce the target rate to what you actually have. (using wired ? Wifi ?)

laurent
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  • I am on wired connection. Is there a way to check my bandwidth limit or do I need to contact network admin? I suspect that might be the case. – Arindam Ghosh Feb 29 '20 at 11:06