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  • Library and several small programs that use it: how should I structure my git repository?

    - by Dan
    I have some code that uses a library that I and others frequently modify (usually only by adding functions and methods). We each keep a local fork of the library for our own use. I also have a lot of small "driver" programs (~100 lines) that use the library and are used exclusively by me. Currently, I have both the driver programs and the library in the same repository, because I frequently make changes to both that are logically connected (adding a function to the library and then calling it). I'd like to merge my fork of the library with my co-workers' forks, but I don't want the driver programs to be part of the merged library. What's the best way to organize the git repositories for a large, shared library that needs to be merged frequently and a number of small programs that have changes that are connected to changes in the library?

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  • Is there something like clock() that works better for parallel code?

    - by Jared P
    So I know that clock() measures clock cycles, and thus isn't very good for measuring time, and I know there are functions like omp_get_wtime() for getting the wall time, but it is frustrating for me that the wall time varies so much, and was wondering if there was some way to measure distinct clock cycles (only one cycle even if more than one thread executed in it). It has to be something relatively simple/native. Thanks

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  • I have a library and several small programs that use it: how should I structure my git repositories?

    - by Dan
    I have some code that uses a library that I and others frequently modify (usually only by adding functions and methods). We each keep a local fork of the library for our own use. I also have a lot of small "driver" programs (~100 lines) that use the library and are used exclusively by me. Currently, I have both the driver programs and the library in the same repository, because I frequently make changes to both that are logically connected (adding a function to the library and then calling it). I'd like to merge my fork of the library with my co-workers' forks, but I don't want the driver programs to be part of the merged library. What's the best way to organize the git repositories for a large, shared library that needs to be merged frequently and a number of small programs that have changes that are connected to changes in the library?

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  • Parallel processing from a command queue on Linux (bash, python, ruby... whatever)

    - by mlambie
    I have a list/queue of 200 commands that I need to run in a shell on a Linux server. I only want to have a maximum of 10 processes running (from the queue) at once. Some processes will take a few seconds to complete, other processes will take much longer. When a process finishes I want the next command to be "popped" from the queue and executed. Does anyone have code to solve this problem? Further elaboration: There's 200 pieces of work that need to be done, in a queue of some sort. I want to have at most 10 pieces of work going on at once. When a thread finishes a piece of work it should ask the queue for the next piece of work. If there's no more work in the queue, the thread should die. When all the threads have died it means all the work has been done. The actual problem I'm trying to solve is using imapsync to synchronize 200 mailboxes from an old mail server to a new mail server. Some users have large mailboxes and take a long time tto sync, others have very small mailboxes and sync quickly.

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  • Outlook unable to synchronize SharePoint library - error 0x80004005

    - by DLux
    We have one large library (~10 GB) on SharePoint that cannot be synchronized with Outlook, even if you only attempt to synch one of the smaller sub folders in the library. Other libraries (or other library sub folders) work fine with Outlook. This is with MOSS 2007 SP1 and Outlook 2007 SP2. The error is: Task 'SharePoint' reported error (0x80004005): 'An error occurred either in Outlook or SharePoint. Contact the SharePoint site administrator.' Reproducing the error Open up the large SharePoint document library in Internet Explorer From the Actions menu, select Connect to Outlook Select Allow on the stssync: security warning that pops up Outlook automatically tries an initial sync and sync status immediately shows the above error. Update 1: I verified the same issue occurs on Windows XP SP3 with IE 6 using Outlook 2007 SP2 and the same SharePoint library (it was originally tested on Windows 7). The issue is definitely related to the library or Outlook. Update 2: Using stsadm I exported the site with this large document library (8.6 GB 15,000 items) and imported it on to a development system. The result is the same on the development system - multiple clients are unable to connect Outlook to the library and get the 0x80004005 error above.

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  • SCCM 2012 R2 - OSD Task Sequence failure on physical computers

    - by user1422136
    I'm trying to deploy windows 7 with SCCM 2012 R2 to physical desktops and laptops. But the task sequence keeps failing, no matter what I try. When I try it on a VM it works fine. However, when I try it on a physical computer it fails. So I think it has something to do with drivers, but I already tried both the "auto apply drivers" + wmi query for model method, and also the "apply driver package" + wmi query for model method. In the link below I added a zip file, containing two other zip files. One is a captured log from a failed osd on a desktop, the other is the export of my task sequence. Download zip-file with log and TS If anyone could resolve the issue, or share their own task sequence for such a task (pure sccm 2012 (R2), no MDT), that would be great.

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  • SCCM 2012 R2 - OSD Task Sequence failure on physical computers

    - by Svanste
    I'm trying to deploy windows 7 with SCCM 2012 R2 to physical desktops and laptops. But the task sequence keeps failing, no matter what I try. When I try it on a VM it works fine. However, when I try it on a physical computer it fails. So I think it has something to do with drivers, but I already tried both the "auto apply drivers" + wmi query for model method, and also the "apply driver package" + wmi query for model method. In the link below I added a zip file, containing two other zip files. One is a captured log from a failed osd on a desktop, the other is the export of my task sequence. Download zip-file with log and TS If anyone could resolve the issue, or share their own task sequence for such a task (pure sccm 2012 (R2), no MDT), that would be great.

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  • SQL Maintenance Cleanup Task 'Success' But not deleting files

    - by Seph
    I have a maintenance plan setup for a databases on a server. As part of the backup is a Maintenance Cleanup Task. SQL Version 2008 The task that 'succeeds' is setup as: Delete backup files Correct folder (same address as the backup task) File extension: bak (NOT .bak) Delete files older than: 20 Hour(s) I have other similar cleanup tasks that occur in the same maintenance plan which work fine. This plan has worked fine in the past, I just noticed that last night it reported 'success' and the rest of the plan continued, however the file from 2 days ago still remains. I have checked similar questions such as this question, and this is not the case as my maintenance task worked fine two days ago and for the past several weeks:

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  • Parallel installation of Office 2003 and Outlook 2010

    - by Marcel Janus
    we have a customer who is not willing to move from Office 2003 to Office 2010 but he now wants to use Office 365. As you know is Office 365 not compatible with Outlook 2003. Now he asked me if it's possible to buy and install Outlook 2010 and keep the rest as it is. I only found some guides for parallel installation of Office 2007 and Office 2010. So my question is if this solution will work. Or are there any issues known?

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  • Visualizing Parallel Branch and Bound Tree Exploration

    - by Akhil
    I have written a parallel program that does a depth first branch and bound exploration of a tree. I can dump the id's (id's are like this 0, 00, 01, 0000, 0001, etc.) of the nodes at frequent intervals to know the frontier of the tree that is being explored at that instant in the tree. The challenge is to visualize the tree exploration with time. Any ideas? e.g. I can draw trees(e.g. using graphViz) at different times and create a movie out of it. Looking for ideas to facilitate this visualization - some better ways to do so or easy tools that can help me make the visualization

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  • Firefox Task Manager [closed]

    - by chris Frisina
    CLOSED!??? I SPECIFICALLY said for OSX, and the previousquestionprovides answers for Windows and other addons are for older versions of FF, or do not answer the question. This is a specific question for OSX. Chrome has a built in task manager under "Tools" to look at the process within Chrome, extremely beneficial in locating a stuck page. What is the similar feature in firefox? I need to identify what is causing it to run slowly, and the addons they suggested dont work for OSX or are outdated, and Chrome's about:memory isn't recognizing FF FF Version 17.0, OSX version 10.8.2 Build 12C3006 How to get to Task Manager: Task Manager: THIS IS NOT A DUPLICATE OF: Possible Duplicate: “Task Manager” addon for Firefox?

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  • Recover a Parallel Desktop 3 virtual machine in VirtualBox

    - by gregseth
    I have an old HDD image file that was used with Parallels Desktop 3. Ideally I'd like to use it in VirtualBox (conversion). In all the tutorials I found (like this one or that one) the VM must be started: there's the problem. I don't have the machine where Parallel 3 was installed anymore. I tried installing the trial version of the last version of Parallels (9) but it seem it doesn't offer the possibility to import an old VM. So here's the question: Given I can't boot the VM with Parallels Desktop, is there a way to convert the image file to another format that is bootable in VirtualBox? If it changes anything, the host is MacOS X 10.9, the guest is Windows XP.

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  • parallel to usb driver windows 7 dot matrix printer

    - by user975234
    I recently built a new Core i5 system with Windows 7 Professional. I had planned to hook up my TVS MSP 250 XL printer using a USB to parallel cable Once I plug the cable in, Windows 7 recognizes it as an IEEE-1284 controller and automatically installs the appropriate driver. However, in the status window it reports the following: "USB Printing Support -- Ready to use" "No Printer Attached -- Ready to use" When I then go ahead and manually add the printer using the "virtual printer port for USB" I can add the printer seemingly without problem. Once finished, it appears in the Devices and Printers panel. Yet, all attempts to print on this printer fail. It appears that simply no data is sent to the printer (either by programs like word or adobe or by attempting to print a test page. Does anybody know how to fix this?

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  • Using a Group Managed Service Account (gMSA) for a scheduled task

    - by Trevor Sullivan
    Back in Windows Server 2008 R2, when stand-alone Managed Service Accounts (sMSA) were new, they could not be used to execute scheduled tasks. In Windows Server 2012 however, there is a new type of account called the Group Managed Service Account (gMSA). This type of account is supposedly capable of launching scheduled tasks in the task scheduler on clients & member servers inside of a Windows Server 2012 forest/domain functional level. So far, I have: Established a Windows Server 2012 forest/domain Created a Group Managed Service Account (gMSA) Installed the gMSA on a Windows Server 2012 member server And currently I'm having trouble with: Setting a scheduled task to use the gMSA When I attempt to use a gMSA on a scheduled task, I get the error message that says "The object cannot be found" (paraphrased) message. My question is: How do I configure a Scheduled Task to execute using a Group Managed Service Account (gMSA)?

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  • Get program that is stuck under task bar in Windows 7

    - by user1413
    I have a program that is stuck under the task bar in Windows 7. I cannot click on it because (I think) the click is interpreted as being on the task bar and not on the program. How do I recover it? The program does not show up when I alt-tab through all of the programs. It also does not show up in Applications in the Task Manager.

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  • How to maximize parallel download from S3

    - by StCee
    I got a lot of images to load from Amazon S3 on a single page, and sometimes it takes quite some time to load all the images. I heard that splitting the images to load from different sub-domains would help parallel downloads, however what is the actual implementation on that? While it is easy to split for sub-domains like static,image, etc; Should I make like 10 sub-domains (image1, image2...) to load say 100 images? Or is there some clever ways to do? (By the way I am considering using memcache to cache the S3images; I am not sure if it is possible. I would be grateful for any further comments. Thanks a lot!

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  • Script Task/Component and Template Information

    The Script Task and Script component are often used by people developing SSIS packages because they are easy to use and now because SSIS could be perceived to be more developer friendly they are very powerful. That being said we should no be using them everywhere.  There are generally Tasks/Components already provided that will do the job it may be that we have to rethink the way we want to draw our package. I had cause last week to break out the script component in SQL Server 2008 SP1 and found that it was broken.  I don’t know when it broke as I do not use them all that often.  My error was as below.     Something must have overwritten this template information.  I looked in Event Viewer and tried the things it suggested but the templates still did not work.  Here is how I got them eventually to work for me (Your Mileage may vary) Open up a Command Prompt window using an administrator level account and “as an administrator” vsta.exe /hostid SSIS_ScriptTask /setup vsta.exe /hostid SSIS_ScriptComponent /setup   This worked for me.  Hope it helps.

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  • Script Task/Component and Template Information

    The Script Task and Script component are often used by people developing SSIS packages because they are easy to use and now because SSIS could be perceived to be more developer friendly they are very powerful. That being said we should no be using them everywhere.  There are generally Tasks/Components already provided that will do the job it may be that we have to rethink the way we want to draw our package. I had cause last week to break out the script component in SQL Server 2008 SP1 and found that it was broken.  I don’t know when it broke as I do not use them all that often.  My error was as below.     Something must have overwritten this template information.  I looked in Event Viewer and tried the things it suggested but the templates still did not work.  Here is how I got them eventually to work for me (Your Mileage may vary) Open up a Command Prompt window using an administrator level account and “as an administrator” vsta.exe /hostid SSIS_ScriptTask /setup vsta.exe /hostid SSIS_ScriptComponent /setup   This worked for me.  Hope it helps.

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  • SQL University: Parallelism Week - Part 2, Query Processing

    - by Adam Machanic
    Welcome back for the second part of Parallelism Week here at SQL University . Get your pencils ready, and make sure to raise your hand if you have a question. Last time we covered the necessary background material to help you understand how the SQL Server Operating System schedules its many active threads, and the differences between its behavior and that of the Windows operating system's scheduler. We also discussed some of the variations on the theme of parallel processing. Today we'll take a look...(read more)

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  • Peer review maatkits mk-parallel-dump and mk-parallel-restore usage?

    - by Brent
    Hiya Im trying to make use of maatkit as a means of dumping a database and then restoring to another database. For dumps: mk-parallel-dump --user abc --password xyz --databases $db --base-dir /tmp/dump For restore: mk-parallel-restore --create-databases --user abc --password xyz --database devdb /tmp/dump My question is, is my logic and understanding correct, and would it be ok to do it like this. Kind Regards Brent

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  • Draw 2 parallel lines

    - by Ben Martin
    How can I calculate the points to draw 2 parallel lines. I know the start and end points for the centre of the parallel lines. To makes thing a little bit harder, it needs to support straight and Bezier curved lines.

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  • Dynamic State Machine in Ruby? Do State Machines Have to be Classes?

    - by viatropos
    Question is, are state machines always defined statically (on classes)? Or is there a way for me to have it so each instance of the class with has it's own set of states? I'm checking out Stonepath for implementing a Task Engine. I don't really see the distinction between "states" and "tasks" in there, so I'm thinking I could just map a Task directly to a state. This would allow me to be able to define task-lists (or workflows) dynamically, without having to do things like: aasm_event :evaluate do transitions :to => :in_evaluation, :from => :pending end aasm_event :accept do transitions :to => :accepted, :from => :pending end aasm_event :reject do transitions :to => :rejected, :from => :pending end Instead, a WorkItem (the main workflow/task manager model), would just have many tasks. Then the tasks would work like states, so I could do something like this: aasm_initial_state :initial tasks.each do |task| aasm_state task.name.to_sym end previous_state = nil tasks.each do |tasks| aasm_event task.name.to_sym do transitions :to => "#{task.name}_phase".to_sym, :from => previous_state ? "#{task.name}_phase" : "initial" end previous_state = state end However, I can't do that with the aasm gem because those methods (aasm_state and aasm_event) are class methods, so every instance of the class with that state machine has the same states. I want it so a "WorkItem" or "TaskList" dynmically creates a sequence of states and transitions based on the tasks it has. This would allow me to dynamically define workflows and just have states map to tasks. Are state machines ever used like this?

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  • How can I merge two Linq IEnumerable<T> queries without running them?

    - by makerofthings7
    How do I merge a List<T> of TPL-based tasks for later execution? public async IEnumerable<Task<string>> CreateTasks(){ /* stuff*/ } My assumption is .Concat() but that doesn't seem to work: void MainTestApp() // Full sample available upon request. { List<string> nothingList = new List<string>(); nothingList.Add("whatever"); cts = new CancellationTokenSource(); delayedExecution = from str in nothingList select AccessTheWebAsync("", cts.Token); delayedExecution2 = from str in nothingList select AccessTheWebAsync("1", cts.Token); delayedExecution = delayedExecution.Concat(delayedExecution2); } /// SNIP async Task AccessTheWebAsync(string nothing, CancellationToken ct) { // return a Task } I want to make sure that this won't spawn any task or evaluate anything. In fact, I suppose I'm asking "what logically executes an IQueryable to something that returns data"? Background Since I'm doing recursion and I don't want to execute this until the correct time, what is the correct way to merge the results if called multiple times? If it matters I'm thinking of running this command to launch all the tasks var AllRunningDataTasks = results.ToList(); followed by this code: while (AllRunningDataTasks.Count > 0) { // Identify the first task that completes. Task<TableResult> firstFinishedTask = await Task.WhenAny(AllRunningDataTasks); // ***Remove the selected task from the list so that you don't // process it more than once. AllRunningDataTasks.Remove(firstFinishedTask); // TODO: Await the completed task. var taskOfTableResult = await firstFinishedTask; // Todo: (doen't work) TrustState thisState = (TrustState)firstFinishedTask.AsyncState; // TODO: Update the concurrent dictionary with data // thisState.QueryStartPoint + thisState.ThingToSearchFor Interlocked.Decrement(ref thisState.RunningDirectQueries); Interlocked.Increment(ref thisState.CompletedDirectQueries); if (thisState.RunningDirectQueries == 0) { thisState.TimeCompleted = DateTime.UtcNow; } }

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  • The C++ Standard Template Library as a BDB Database (part 1)

    - by Gregory Burd
    If you've used C++ you undoubtedly have used the Standard Template Libraries. Designed for in-memory management of data and collections of data this is a core aspect of all C++ programs. Berkeley DB is a database library with a variety of APIs designed to ease development, one of those APIs extends and makes use of the STL for persistent, transactional data storage. dbstl is an STL standard compatible API for Berkeley DB. You can make use of Berkeley DB via this API as if you are using C++ STL classes, and still make full use of Berkeley DB features. Being an STL library backed by a database, there are some important and useful features that dbstl can provide, while the C++ STL library can't. The following are a few typical use cases to use the dbstl extensions to the C++ STL for data storage. When data exceeds available physical memory.Berkeley DB dbstl can vastly improve performance when managing a dataset which is larger than available memory. Performance suffers when the data can't reside in memory because the OS is forced to use virtual memory and swap pages of memory to disk. Switching to BDB's dbstl improves performance while allowing you to keep using STL containers. When you need concurrent access to C++ STL containers.Few existing C++ STL implementations support concurrent access (create/read/update/delete) within a container, at best you'll find support for accessing different containers of the same type concurrently. With the Berkeley DB dbstl implementation you can concurrently access your data from multiple threads or processes with confidence in the outcome. When your objects are your database.You want to have object persistence in your application, and store objects in a database, and use the objects across different runs of your application without having to translate them to/from SQL. The dbstl is capable of storing complicated objects, even those not located on a continous chunk of memory space, directly to disk without any unnecessary overhead. These are a few reasons why you should consider using Berkeley DB's C++ STL support for your embedded database application. In the next few blog posts I'll show you a few examples of this approach, it's easy to use and easy to learn.

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