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  • PBS batch jobs - the qalter command

    - by Ryan Budney
    I've got a giant computation running on a Scientific Linux cluster. At present I have over 600 jobs parked in the queue, waiting for processor time, while a few are running. I'm trying to use the qalter command on some of the idle but scheduled jobs. I'd like to schedule them for a later time, so that other users can jump part of the queue, sort of as an act of politeness. Is this doable? For example, JOBNAME 292399 is currently idle, scheduled to be run whenever a spot in the queue opens up. But if I run qalter -a 10051000 292398 followed by qrerun 292398 I get qrerun: Request invalid for state of job 292398.euler. From the qalter documentation, I thought 10051000 refers to tomorrow (oct 5th, 10am) but perhaps I'm misunderstanding something? If I'm going about this the wrong way, please let me know. The main thing I'm looking for is a command that's easily scriptable, so that I can modify when my queued tasks get run. qalter seems good for those purposes if I can get it working. I'd rather avoid running qdel and re qsubbing the computations, as there's a bookkeeping issue on which tasks to restart (vs which ones not to). I want to avoid that kind of bookkeeping. From googling around I notice some qalter commands have rather different date formats, but the above appears to be correct, as far as I can tell from the man docs. Any help would be appreciated.

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  • I want to change DPI with Imagemagick without changing the actual byte-size of the image data

    - by user1694803
    I feel so horribly sorry that I have to ask this question here, but after hours of researching how to do an actually very simple task I'm still failing... In Gimp there is a very simple way to do what I want. I only have the German dialog installed but I'll try to translate it. I'm talking about going to "Picture-PrintingSize" and then adjusting the Values "X-Resolution" and "Y-Resolution" which are known to me as so called DPI values. You can also choose the format which by default is "Pixel/Inch". (In German the dialog is "Bild-Druckgröße" and there "X-Auflösung" and "Y-Auflösung") Ok, the values there are often "72" by default. When I change them to e.g. "300" this has the effect that the image stays the same on the computer, but if I print it, it will be smaller if you look at it, but all the details are still there, just smaller - it has a higher resolution on the printed paper (but smaller size... which is fine for me). I am often doing that when I am working with LaTeX, or to be exact with the command "pdflatex" on a recent Ubuntu-Machine. When I'm doing the above process with Gimp manually everything works just fine. The images will appear smaller in the resulting PDF but with high printing quality. What I am trying to do is to automate the process of going into Gimp and adjusting the DPI values. Since Imagemagick is known to be superb and I used it for many other tasks I tried to achieve my goal with this tool. But it does just not do what I want. After trying a lot of things I think this actually is be the command that should be my friend: convert input.png -density 300 output.png This should set the DPI to 300, as I can read everywhere in the web. It seems to work. When I check the file it stays the same. file input.png output.png input.png: PNG image data, 611 x 453, 8-bit grayscale, non-interlaced output.png: PNG image data, 611 x 453, 8-bit grayscale, non-interlaced When I use this command, it seems like it did what I wanted: identify -verbose output.png | grep 300 Resolution: 300x300 PNG:pHYs : x_res=300, y_res=300, units=0 (Funny enough, the same output comes for input.png which confuses me... so this might be the wrong parameters to watch?) But when I now render my TeX with "pdflatex" the image is still big and blurry. Also when I open the image with Gimp again the DPI values are set to "72" instead of "300". So there actually was no effect at all. Now what is the problem here. Am I getting something completely wrong? I can't be that wrong since everything works just fine with Gimp... Thanks for any help in this. I am also open to other automated solutions which are easily done on a Linux system...

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  • Deleting a tag from lots of images at once in Aperture?

    - by Bart B
    Aperture makes it easy to tag lost of pictures at once by just selecting all the images, and the dragging and dropping tags from the tags pallet onto the selected images. But when you need to do the reverse, I can't find a way other than editing each image individually. Is there a way I could select multiple images at once and strip a tag out of all of them? Thanks, Bart.

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  • Software for handling camera RAW-files

    - by Eikern
    I use a digital SLR as most other photographers do today and have quickly realised that capturing images using camera-RAW files is the way to go. Personally I use Adobe Lightroom to handle my photo library, but I know there are other software available like Apple Aperture. These applications are quite hard to use for a novice, and are quite expensive too. I've often recommended other photographers to switch to camera-raw, but they won't do it because Windows can't handle it natively. Are there any free or cheaper applications out there that can do simple file handling and adjustments? Preferably so simple that my mom can do it. I know Nikon offers a codec that allows you to view NEF-files natively inside Windows, but still limits the uses of the file and slows the system down if the file is big. Does anybody know of a drag-and-drop application that converts camera-raw to JPG on-the-fly? In case I or someone would need to upload an image to the web or use it inside a word-document. Thanks.

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  • Could we build a mega-processor out of superconductors?

    - by Carson Myers
    A superconductor, once cooled below a critical temperature, loses all of its electrical resistance and therefore becomes 100% efficient. This means that when a current flows through a superconductor, none of the energy is lost to heat or light. Theoretically, could we build a processor out of superconductive materials, that could effectively run at, oh I don't know, say, 300ghz? or 5,000ghz? Since a superconductive circuit is 100% efficient, this means that once supplied with electricity, the source of power could be completely removed from the circuit and the current would continue to flow forever. So if we made all the components inside a computer out of superconductive materials, could we get away with only supplying power to the peripherals and save a-whole-lot on energy, while dramatically increasing computing speed? Might this be one of the next big breakthroughs in computing? What do you think?

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  • Torque jobs does not enter "E" state (unless "qrun")

    - by Vi.
    Jobs I add to the queue stays there in "Queued" state without attempts to be executed (unless I manually qrun them) /var/spool/torque/server_logs say just 04/11/2011 12:43:27;0100;PBS_Server;Job;16.localhost;enqueuing into batch, state 1 hop 1 04/11/2011 12:43:27;0008;PBS_Server;Job;16.localhost;Job Queued at request of test@localhost, owner = test@localhost, job name = Qqq, queue = batch The job requires just 1 CPU on 1 node. # qmgr -c "list queue batch" Queue batch queue_type = Execution total_jobs = 0 state_count = Transit:0 Queued:0 Held:0 Waiting:0 Running:0 Exiting:0 max_running = 3 acl_host_enable = True acl_hosts = localhost resources_min.ncpus = 1 resources_min.nodect = 1 resources_default.ncpus = 1 resources_default.nodes = 1 resources_default.walltime = 00:00:10 mtime = Mon Apr 11 12:07:10 2011 resources_assigned.ncpus = 0 resources_assigned.nodect = 0 kill_delay = 3 enabled = True started = True I can't set resources_assigned to nonzero because of Cannot set attribute, read only or insufficient permission resources_assigned.ncpus. When I qrun some task, this goes to mom's log: 04/11/2011 21:27:48;0001; pbs_mom;Svr;pbs_mom;LOG_DEBUG::mom_checkpoint_job_has_checkpoint, FALSE 04/11/2011 21:27:48;0001; pbs_mom;Job;TMomFinalizeJob3;job 18.localhost started, pid = 28592 04/11/2011 21:27:48;0080; pbs_mom;Job;18.localhost;scan_for_terminated: job 18.localhost task 1 terminated, sid=28592 04/11/2011 21:27:48;0008; pbs_mom;Job;18.localhost;job was terminated 04/11/2011 21:27:48;0080; pbs_mom;Svr;preobit_reply;top of preobit_reply 04/11/2011 21:27:48;0080; pbs_mom;Svr;preobit_reply;DIS_reply_read/decode_DIS_replySvr worked, top of while loop 04/11/2011 21:27:48;0080; pbs_mom;Svr;preobit_reply;in while loop, no error from job stat 04/11/2011 21:27:48;0080; pbs_mom;Job;18.localhost;obit sent to server Scheduler log (/var/spool/torque/sched_logs/20110705): 07/05/2011 21:44:53;0002; pbs_sched;Svr;Log;Log opened 07/05/2011 21:44:53;0002; pbs_sched;Svr;TokenAct;Account file /var/spool/torque/sched_priv/accounting/20110705 opened 07/05/2011 21:44:53;0002; pbs_sched;Svr;main;/usr/sbin/pbs_sched startup pid 16234 qstat -f: Job Id: 26.localhost Job_Name = qwe Job_Owner = test@localhost job_state = Q queue = batch server = localhost Checkpoint = u ctime = Tue Jul 5 21:43:31 2011 Error_Path = localhost:/home/test/jscfi/default/0.738784810485275/qwe.e26 Hold_Types = n Join_Path = n Keep_Files = n Mail_Points = a mtime = Tue Jul 5 21:43:31 2011 Output_Path = localhost:/home/test/jscfi/default/0.738784810485275/qwe.o26 Priority = 0 qtime = Tue Jul 5 21:43:31 2011 Rerunable = True Resource_List.ncpus = 1 Resource_List.neednodes = 1:ppn=1 Resource_List.nodect = 1 Resource_List.nodes = 1:ppn=1 Resource_List.walltime = 00:01:00 substate = 10 Variable_List = PBS_O_HOME=/home/test,PBS_O_LANG=en_US.UTF-8, PBS_O_LOGNAME=test, PBS_O_PATH=/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games, PBS_O_MAIL=/var/mail/test,PBS_O_SHELL=/bin/sh,PBS_SERVER=127.0.0.1, PBS_O_WORKDIR=/home/test/jscfi/default/0.738784810485275, PBS_O_QUEUE=batch,PBS_O_HOST=localhost euser = test egroup = test queue_rank = 1 queue_type = E etime = Tue Jul 5 21:43:31 2011 submit_args = run.pbs Walltime.Remaining = 6 fault_tolerant = False How to make it execute jobs automatically, without manual qrun?

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  • How can I do two columns in OpenOffice.org Writer?

    - by Sanoj
    I would like to structure my document with two columns in the middle of the page, and one column in the top and in the bottom. Like my example below. How can I do two columns like this in OpenOffice.org Writer? My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document My document

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  • Software to aid using camera as a scanner

    - by xxzoid
    I want to digitize some index cards with my camera. I'm looking for a program that would automatically fix geometry on the shots (as you would expect the cards come tilted on the picture). I have an app (droid scan lite) on my android phone that does exactly that, but I would prefer to do it on my pc (the phone camera has poor quality and it's slow and focuses badly while I have a decent slr). If the program is open source it's an advantage, cross platform -- even more so.

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  • mpirun -np N, what if N is larger than my core number?

    - by Daniel
    Say I have a 4-core workstation, what would linux (Ubuntu) do if I execute mpirun -np 9 XXX Q1. Will 9 run immediately together, or they will run 4 after 4? Q2. I suppose that using 9 is not good, because the remainder 1, it will make the computer confused, (I don't know is it going to be confused at all, or the "head" of the computer will decide which core among the 4 cores will be used?) Or it will be randomly picked. Who decide which one core to call? Q3. If I feel my cpu is not bad and my ram is okay and large enough, and my case is not very big. Is it a good idea in order to fully use my cpu and ram, that I do mpirun -np 8 XXX, or even mpirun -np 12 XXX. Q4. Who decides all of these effciency optimization, Ubuntu, or linux, or motherboard or cpu? Your enlightenment would be really appreciated.

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  • Reading PFS First Choice and Word Perfect 5 files in an XP or Windows 98 environment

    - by indyK1ng
    Hello all, My priest has 3 computers, Windows 3.1, Windows 98 and Windows XP. Recently his power supply blew out on his Windows 3.1 computer and he needs to get to the data on the hard drive. He's looking into imaging the hard drive and setting it up as a VM, which might be a bit much for him. Ignoring getting the data off the hard drive as a separate problem, are there any programs out there that can read files from PFS First Choice and Word Perfect 5. He already has Microsoft Office so solutions involving that are preferable. If he can install the software on his Windows XP or 98 computer, that would be helpful too. Thank you for your help

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  • Software to clean up photos of whiteboards and documents?

    - by Norman Ramsey
    I take a lot of photos of whiteboards, blackboards, and so on for teaching purposes (examples online through May 2010). I'm interested in cleaning them up for archival purposes, preferably using Linux. Commercial products ClearBoard and PhotoNote are priced a little aggressively for my purposes, plus my students would like to have this capability too. Does anyone know of any good, open source software for Converting photographs to images with just a few colors? Eliminating perspective distortion? Removing unwanted junk from around the edges of an image? or anything like that? I'm imagining that I start out with a picture of my whiteboard using red and black markers, and I end up with a three-color image using just white, red, and black. Or I photograph a laser-printed document and end up with a clean black-and-white image. I have tried standard tools that reduce the number of colors in an image, and they do a terrible job—probably because they are trying to reproduce the uneven illumination of the original image. Command-line Linux tools would be ideal.

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  • Combine Multiple Audio Files into a single higher-quality audio File

    - by namenlos
    BACKGROUND My team gave a demo to a large audience - we recorded the audio of the demo in multiple locations in the room (3) the audio was recorded using cheap laptop microphones I was not involved in the recording of the audio or the demo Both audio files suck in some form the first one is of a recording near the speaker - which clearly gets his voice but the the audience is audience is muffled - also this one is slightly noisy The second recording was done in the middle of the audience - it gets the audience questions clearly but actually gets the speaker rather sometimes well and sometimes poorly (not all the speakers spoke loudly enough to be heard) MY QUESTION Is there any techinque or software which can be used to merge these audio files in such a way that the best qualities of each are preserved. I am NOT asking now to simply merge them together in one track - I've already done that in Audacity and it is certainly better - what I am looking for could be considered closer to how HDR images are created - multiple exposures combined into an enhanced new version which is not simply an average of the inputs. NOTE Am not an "Audio" guy - just a normal user

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  • Get image pixels of prescribed color

    - by ohadsc
    Hi, I have an image (PNG or JPG) inside which there is at least one pixel of a certain RGB color I know in advance I want to find the pixel(s) of that color For example, I may have image.jpg inside which I know some pixel has the RGB value 255,100,200. I want a program that will give me the list of pixels (if any) of that color in the image Anyone know of a tool to help me with that ? Thanks !

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  • What's the state of the art in image upscaling?

    - by monov
    I like to collect cool pics and use them as wallpapers or for other things. Often, artists publish only low-res versions, probably for fear of theft. Example: Gabriel Pulecio's BIRDS Now, if I want to use that as a wallpaper, I'd have to upscale it, and obviously that'd make it look blurry because of the bicubic interpolation. I realize there's no real way to get a high-res version from a low-res pic, because the information is not simply there. That said, I'm wondering if heuristics have been developed for upscaling with less apparent loss of quality. Those would probably be optimized for specific image types. For photorealistic pictures, for cartoons with large flat areas, for pixel art... One algorithm I'm aware of is Seam Carving. It works for some kinds of pics, especially ones with a plain, undetailed or uninteresting background, and a subject that strongly stands out. But it's far from being general-purpose. Applying it to the above pic produces this. It looks quite sharp, but the proportions are horribly distorted because the algorithm is not designed for this kind of pic. Another is Pixel art scaling algorithms. Those are completely unfit for anything other than actual pixel art that's pixelized to begin with. For example, I tried the scale2x windows binary on my pic, but its output was nearly indistinguishable from nearest-neighbour scaling because the algorithm didn't detect any isolated pixely fragments to work from. Something else I tried was: I enlarged the image in Photoshop with bicubic interpolation, then I applied unsharp mask. The result looks pretty bad. The red blotch is actually resized reasonably well, but the dove is far from it. What I'm looking for is some app that makes a best-effort attempt at upscaling any input image while minimizing blurriness. If you know of any, I'll be thankful. Note that the subjective prettiness and sharpness of the result is what matters... the result doesn't need to be completely faithful to the original small image.

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  • Batch Conversion of PaperPort MAX Files

    - by Matthew
    I've got a library of MAX files from an old Visioneer Scanner that used ScanSoft PaperPort. I don't have the PC that I used to scan them anymore, and I don't have the CD for PaperPort. Does anyone know of a utility I can use to open and convert .MAX files to something more useful like a JPEG? (I'd prefer something that batch converts -- but if I can get a utility that will even allow one conversion, I could probably figure out how to use AutoHotkey or something like that to automate.) Thanks for your help

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  • Photoshop: HSL Color picker plugin?

    - by Ian Boyd
    Is there a plugin that can let Photoshop use a HSL color picker, rather than HSV (which Adobe calls HSB)? In other words, any/all of the following locations could have an HSL option: Or perhaps a plugin with it's own color picker. Reference RGB HSL HSV (aka HSB) ============= =============== ================ (1, 0, 0 ) ( 0°, 1, 0.5 ) ( 0°, 1, 1 ) (0.5, 1, 0.5) (120°, 1, 0.75) (120°, 0.5, 1 ) (0, 0, 0.5) (240°, 1, 0.25) (240°, 1, 0.5)

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  • Paint.NET equivalent for Linux?

    - by Macha
    On Windows, my favorite image editor is Paint.NET. However, on Linux, GIMP is as unfriendly as photoshop despite having less features. (i.e. It takes ages to load, their's far too much stuff). Most of my image editing is simple things where Photoshop or GIMP would be overkill. Paint.NET does not run on Wine or Mono. So is there any similar fast and simple but powerful image editor available for Linux? EDIT: There is a Mono version available, but I don't want to have to deal with installing svn versions of mono, and compiling the version myself.

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  • Product Recommendation: Good job scheduler for windows servers?

    - by Bret Fisher
    Looking for a mostly-GUI tool that is low cost (less then $1k, but not required) and allows you to create scheduled tasks and jobs without writing vbscript, batch files, or powershell. Something simple that speaks SMB/CIFS, SMTP, LDAP, etc. for such things as "delete some files based on a list of folders from this text file" or "disable all users with expired accounts" or "delete all disabled users not in this AD group". I've seen some of the big multi-OS enterprise task automation systems and they just look way overkill. We're a windows-only shop, Server 2003 or newer and there's got to be a simple non-agent based product that is drag-n-drop for some of this basic automation. Today we use all three languages mentioned above, and the scripts are not as reliable as a workflow-based-tool would be. Thanks.

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