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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Thank you Carson for the explanation. The issue is now resolved for the annotation of large scaffolds with the use of MPI Maker as well as changing the blast_depth
option.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Aravind Prasad.</span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif""> Carson Holt [mailto:carsonhh@gmail.com]
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<b>Sent:</b> Tuesday, 27 June, 2017 5:48 AM<br>
<b>To:</b> Aravind PRASAD<br>
<b>Cc:</b> Seth Munholland; maker-devel@yandell-lab.org<br>
<b>Subject:</b> Re: [maker-devel] Maker annotation of large scaffolds</span></p>
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<p class="MsoNormal">All results are kept and placed into the final GFF3 unless you set blast_depth. Basically, most alignments are redundant and can be thrown away early in the process. But maker does not do this by default because most users tend to want
to see all evidence. MAKER only uses 10 alignments to build it’s calculations anyways. The rest are just kept for reference. But the cost of keeping the other alignments around can be substantial if you are in a region with deep evidence depth (I’ve seen regions
with 5,000 - 10,000 evidence alignments for some datasets). So if you set blast_depth, it tells MAKER you are ok with throwing out the extra depth early (MAKER still parses all alignments it just throws extra ones away as it determines they are not useful
or are redundant). This saves a lot of time and RAM downstream at the cost of losing the alignments in the report. A depth of 10 means that no more than 10 alignments per data source will be kept per locus.</p>
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<p class="MsoNormal">—Carson</p>
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<p class="MsoNormal">On Jun 23, 2017, at 2:25 AM, Aravind PRASAD <<a href="mailto:aravindp@imcb.a-star.edu.sg">aravindp@imcb.a-star.edu.sg</a>> wrote:</p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Hi All,</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Thank you for your inputs. Currently, I’m not using the MPI version but running Maker in multiple instances. Previously, I tried to run the MPI version but
failed. Though the installation had no issues with MPI-Maker.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Carson, Can you please explain what exactly does the blast_depth option does while running Maker?</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Thank you all for your time!</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Regards,</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Aravind.</span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">From:</span></b><span class="apple-converted-space"><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif""> </span></span><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">Carson
Holt [<a href="mailto:carsonhh@gmail.com"><span style="color:purple">mailto:carsonhh@gmail.com</span></a>]<span class="apple-converted-space"> </span><br>
<b>Sent:</b><span class="apple-converted-space"> </span>Friday, 23 June, 2017 12:06 PM<br>
<b>To:</b><span class="apple-converted-space"> </span>Seth Munholland<br>
<b>Cc:</b><span class="apple-converted-space"> </span>Aravind PRASAD;<span class="apple-converted-space"> </span><a href="mailto:maker-devel@yandell-lab.org"><span style="color:purple">maker-devel@yandell-lab.org</span></a><br>
<b>Subject:</b><span class="apple-converted-space"> </span>Re: [maker-devel] Maker annotation of large scaffolds</span></p>
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<p class="MsoNormal">If running under MPI, the only step that should take a long time would be a final clustering step (the clustering is not parallelized). It should run in well under 24 hours though, so perhaps it is a memory issue or a feature depth issue.
You can try running the contig by itself and setting all the bast_depth parameters in maker_bopts.ctl to 10 to help both.</p>
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<p class="MsoNormal">Otherwise making a large overlap for subdivided contigs (50-100kb) should be enough. Alternatively look for streches of NNNNNN’s in the contig and split on those.</p>
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<p class="MsoNormal">—Carson</p>
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<p class="MsoNormal">On Jun 22, 2017, at 9:43 AM, Seth Munholland <<a href="mailto:munholl@uwindsor.ca"><span style="color:purple">munholl@uwindsor.ca</span></a>> wrote:</p>
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<p class="MsoNormal">I would think splitting could work if you generate a sufficient overlap. IE 1-100k, 50-150k, etc. Reassembling the annotations for the overlap regions may be tricky if you get conflicting annotations though.</p>
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<p class="MsoNormal">Seth Munholland, B.Sc.</p>
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<p class="MsoNormal">Department of Biological Sciences<br>
Rm. 304 Biology Building<br>
University of Windsor<br>
401 Sunset Ave. N9B 3P4<br>
T: (519) 253-3000 Ext: 4755</p>
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<p class="MsoNormal">On Thu, Jun 22, 2017 at 2:39 AM, Aravind PRASAD <<a href="mailto:aravindp@imcb.a-star.edu.sg" target="_blank"><span style="color:purple">aravindp@imcb.a-star.edu.sg</span></a>> wrote:</p>
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<p class="MsoNormal">Hi<span class="apple-converted-space"> </span><span style="color:#1F497D">All</span>,</p>
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<p class="MsoNormal">I’m trying to annotate a fish genome using Maker pipeline. It could finish the annotation for maximum scaffolds except 5 of them which are of size around 100M base pairs. The current clusters in our institute has a time limit of 24hrs for
a job and these scaffolds could not be annotated with in that time.</p>
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<p class="MsoNormal">Can you please suggest any other way of finishing the annotation for large scaffolds?</p>
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<p class="MsoNormal">I thought of chunking up the scaffolds to run, but, I’m afraid that would split a gene into two.</p>
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<p class="MsoNormal">Thanks for your time.</p>
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<p class="MsoNormal">Regards,</p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt; color:#002060"><a href="mailto:aravindp@imcb.a-star.edu.sg" target="_blank"><span style="color:purple">Aravind PRASAD</span></a><span class="apple-converted-space"> </span>:: Research Officer :: Comparative
and Medical Genomics Lab :: Institue of Molecular and Cell Biology (IMCB) :: Agency for Science, Technology and Research (A*STAR)</span></b></p>
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<p class="MsoNormal"><span style="font-size:9.0pt; color:#4F81BD">61 Biopolis Drive :: #5-04 Proteos :: Singapore 138673:: DID<span class="apple-converted-space"> </span><a href="tel:+65%206586%209573" target="_blank"><span style="color:purple">(+65) 6586 9573</span></a><span class="apple-converted-space"> </span>::
Fax<span class="apple-converted-space"> </span><a href="tel:+65%206779%201117" target="_blank"><span style="color:purple">(+65) 6779 1117</span></a><span class="apple-converted-space"> </span>::<span class="apple-converted-space"> </span><a href="http://www.imcb.a-star.edu.sg/" target="_blank"><span style="color:purple">http://www.imcb.a-star.edu.sg/</span></a></span></p>
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