Hello,

I CC'ed the mail to the community mailing list.

To subscribe:  
https://lists.sourceforge.net/lists/listinfo/denovoassembler-users

On 23/04/13 04:01 PM, Daniel Gruner wrote:
> Hi Alison,
>
> We've noticed you are running a fairly large Ray assembly job, like you
> did last Saturday.  It turns out that this job causes a high load on the
> filesystem, and the effect is to slow down access to file for everybody
> on SciNet.
>

On gpc, right ?

> We are not sure why this is, and in fact I'd like to contact the developer of
> Ray, Sebastien Boisvert, about it.  Perhaps you can tell me some details of
> your current calculation, using 1024 cores.
>
> There is a new version of Ray out, and it is conceivable that some of the 
> problems
> have been addressed. Would you be able to test it?  Supposedly it fixes a 
> number
> of issues.

The following options can do a lot of input/output operations:

-write-kmers

-read-write-checkpoints CheckpointDirectory

>
> It may be useful to be able to tell the developer of Ray what exactly you are 
> doing
> in your calculation, so that he may be able to determine if there is indeed a
> problem with his I/O strategy.

Can you provide the complete command line ?


The file format .fastq.gz has a readahead code implemented too. That may help.

>
> I am copying Sebastien in this email.
>
> Thanks and regards,
> Danny
>




------------------------------------------------------------------------------
Try New Relic Now & We'll Send You this Cool Shirt
New Relic is the only SaaS-based application performance monitoring service 
that delivers powerful full stack analytics. Optimize and monitor your
browser, app, & servers with just a few lines of code. Try New Relic
and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr
_______________________________________________
Denovoassembler-users mailing list
Denovoassembler-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/denovoassembler-users

Reply via email to