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Hi Benoit,
<div class="">what sort of storage is being used to store the files in question on the FEI server? Your description sounds like the files being transferred are on a single 'spinning platter' hard drive, which will generally max out in data I/O at 150-200 MB/s.
Most machines used for storing high bandwidth data will either use a RAID 5/6 array of traditional hard drive (which can achieve 1000-2000 MB/s depending on the number of drives) or high speed SSDs which will max out at ~600 MB/s on a standard SATA bus, but
can achieve 1000-3000 MB/s if alternative interfaces are used.</div>
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<div style="text-align: start; text-indent: 0px;"><font face="Courier" class=""><span style="font-size: 14px;" class="">--------------------------------------------------------------------------------------<br class="">
Steven Ludtke, Ph.D.<br class="">
Charles C. Bell Jr., Professor of Structural Biology<br class="">
Dept. of Biochemistry and Molecular Biology (<a href="http://www.bcm.edu/biochem" class="">www.bcm.edu/biochem</a>)<br class="">
Co-Director CIBR Center (<a href="http://www.bcm.edu/research/cibr" class="">www.bcm.edu/research/cibr</a>)<br class="">
Co-Director National Center For Macromolecular Imaging (<a href="http://ncmi.bcm.edu" class="">ncmi.bcm.edu</a>)<br class="">
Baylor College of Medicine <br class="">
<a href="mailto:sludtke@bcm.edu" class="">sludtke@bcm.edu</a></span></font></div>
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<blockquote type="cite" class="">
<div class="">On Dec 21, 2017, at 4:19 AM, <a href="mailto:benoit.zuber@ana.unibe.ch" class="">
benoit.zuber@ana.unibe.ch</a> wrote:</div>
<br class="Apple-interchange-newline">
<div class=""><font size="2" style="font-family: Helvetica; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class=""><b class="">***CAUTION:***
This email is not from a BCM Source. Only click links or open attachments you know are safe.</b></font><span style="font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;" class=""></span>
<hr style="font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">
<div class="WordSection1" style="page: WordSection1; font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);">
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">Dear all<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">We have a linux workstation connected directly through fiber optics to the so-called FEI server, i.e. the computer where Falcon3 saves frames, which runs under Windows. Strangely, file transfer from linux to
windows is fast (600 MB/s) whereas file transfer from windows to linux is slow (160 MB/s). We have tried mounting the windows drive on linux through cifs or nfs, as well as mounting the linux drive on windows through nfs and we always get the same result.<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">We also tested windows to windows (we connected another windows machine to the fei server) : fast both ways. And we tested linux to linux : fast both ways<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">We tested network speed using iperf, and it is high in either direction. It is only when we transfer files that we have problems.<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">Any suggestion welcome.<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">Thanks<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">Benoit<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">-- <o:p class=""></o:p></span></div>
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<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">Prof. Benoît Zuber<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">University of Bern<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">Institute of Anatomy<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">Baltzerstrasse 2<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">Postfach 922<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">3000 Bern 9<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
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<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span lang="DE" style="font-size: 11pt;" class="">+41 31 631 84 40</span><span lang="DE" class=""><o:p class=""></o:p></span></div>
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<span style="font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">
<span style="font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;" class="">3dem
mailing list</span><br style="font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">
<a href="mailto:3dem@ncmir.ucsd.edu" style="color: rgb(149, 79, 114); text-decoration: underline; font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">3dem@ncmir.ucsd.edu</a><br style="font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">
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