Project Trident: A Scientific Workflow Workbench

New Post: Trident Workflow would not Run

abahrami — Wed, 22 May 2013 17:21:43 GMT

We have created a workflow using Trident . Which worked before but when we try to demo it, trident workflow would not start and we were unable to make it to run. Whenever we try to run it, It would go to Wait state then after a while it display a message saying do you want keep waiting or abort. Any Idea where we need to look as what is the source of problem?
Thanks
abahrami

Closed Issue: TridentWorkflowHost.exe crashes [11928]

rahularora25 — Thu, 16 May 2013 08:26:50 GMT

I've installed Trident on a Windows Server 2008 R2 system. (64bit) I'm using SQL Server 2008 Standard.

After installation, I can run the cove sample but the Ocean Current produces an error message in the Workflow Composer. The data seems to come through ok, but when I close the chart it crashes the Workflowhost.exe. Here is the event log info:

Error Details:-

Faulting application name: TridentWorkflowHost.exe, version: 1.0.0.0, time stamp: 0x4c518ec8
Faulting module name: KERNELBASE.dll, version: 6.1.7600.16385, time stamp: 0x4a5bdfe0
Exception code: 0xc000041d
Fault offset: 0x000000000000aa7d
Faulting process id: 0xcc4
Faulting application start time: 0x01cb4ee70a38309e
Faulting application path: C:\Program Files\Microsoft Project Trident - A Scientific Workflow Workbench\Executor\TridentWorkflowHost.exe
Faulting module path: C:\Windows\system32\KERNELBASE.dll
Report Id: 58201b1e-bada-11df-9f3e-005056a60ecc

Log Files attached

New Post: Hourly scheduling of jobs

stp8954 — Sat, 11 May 2013 01:29:22 GMT

Hi,
Is there a way to get a granularity smaller than a day for job schedules? I need to run some jobs every 2-3 hours..

Thanks

New Post: Trident Silverlight Client error [HTTPWebRequest_WebException_RemoteServer] Argument NOtFound

abahrami — Tue, 23 Apr 2013 22:14:41 GMT

Hi,
I was able to get Trident Silverlight Client work. But if we try to run it again I get following errors. Any suggestion as what I am doing wrong? it is running on Windows 2008 Server.
Best
abahrami

Error
[HTTPWebRequest_WebException_RemoteServer] Argument NOtFound
Debugging resource strings are unaviable. Often key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=5.120125.0&File=system.Windows.dll&Key=HttepWebRequest_WebException_RemoteServer

New Post: Running Trident on Microsot server 2008- Problem signature

abahrami — Mon, 22 Apr 2013 19:24:54 GMT

Hi Trying to tun Trident on Microsoft 2008 server and get the following error

Trident workflow host has stopped working:
Details:
roblem signature:
Problem Event Name: APPCRASH
Application Name: TridentWorkflowHost.exe
Application Version: 1.0.0.0
Application Timestamp: 4ef44339
Fault Module Name: KERNELBASE.dll
Fault Module Version: 6.1.7600.16385
Fault Module Timestamp: 4a5bdfe0
Exception Code: c000041d
Exception Offset: 000000000000aa7d
OS Version: 6.1.7600.2.0.0.274.10
Locale ID: 1033
Additional Information 1: b92b
Additional Information 2: b92ba0a66784877a9e23c085dd7e1628
Additional Information 3: 5a93
Additional Information 4: 5a935e018dfd4ca7f1dbfb7253ddf2b3

Appreciate any help as what is going on?
thanks
abahrami

New Post: Trident Silverlight Application

abahrami — Fri, 12 Apr 2013 16:36:58 GMT

I checked my IIS and I see Trident Web Services there. I tried to run install and noticed that Trident Silverlight is not check so I select it click on change I am getting the following error

Cannot connect to Internet Information Server -214722164) when it tried to configure the IIS any idea to solve it is very much appropriated.
abahrami

New Post: Trident Silverlight Application

abahrami — Fri, 12 Apr 2013 16:06:48 GMT

Hi,
Thanks for information. I don't have it in the menu. What is URL for it?

Also on different topic is it possible to start a workflow by call with passing parameters if user dont want to see the UI just want to execute a workflow?

Regards
Ali

New Post: Trident Silverlight Application

abhisheks — Fri, 12 Apr 2013 09:33:21 GMT

At the time of the Trident installation, if you had marked the Silverlight checkbox then Trident Silverlight application will be installed. You can access then through start button menu or directly typing the url.

-Regards

New Post: How to use extternal dll in activity

abahrami — Fri, 12 Apr 2013 01:58:44 GMT

Hi,
I am using Jason.net and using Newtonsoft.Json.dll for .NET 4.0 but still getting error when go to dependencies, Can you suggest json parser?
Thanks so much
abahrami

New Post: Trident Silverlight Application

abahrami — Thu, 11 Apr 2013 18:38:40 GMT

How do you run Trident Silverlight Application. Basically I want to be able to run the workflow from web. Not composing the workflow.
thanks
abahrami

New Post: Multiple users logon issue

abhisheks — Tue, 09 Apr 2013 11:19:52 GMT

The machines log on credentials should have access right over the other machine. The users should be added on both the machines as admins.

New Post: How to use extternal dll in activity

abhisheks — Tue, 09 Apr 2013 11:14:22 GMT

Hi,

The problem is in the dll version. The trident uses .NET Framework 4.0. Let me know if you have any further issue.

Regards,
Trident Support

New Post: How to use extternal dll in activity

abahrami — Sun, 07 Apr 2013 00:41:09 GMT

Hi,

Using 'Newtonsoft.Json.dll for parsing json message, During run i get error cause the activity to breaks

Execution of the workflow failed Reason:Could not load file or assembly 'Newtonsoft.Json, Version=4.5.00 culture=neutral, publicKeyToken=30ad4fefb2a6aeed' or one of its dependencies. The system cannot find the file specified,

When i try to make the 'Newtonsoft.Json.dll as dependent by going to show dependencies and try to add the 'Newtonsoft.Json.dll I get the following error
Could not load file or assembly 'file//c:..\Newtonsoft,dll' or one of it dependencies. Operation is not supported. (Exception from HRESULT:0x80131515)

I really appreciate for any help how to solve this problem.
Regards
abahrami

New Post: Multiple users logon issue

jitkang — Wed, 27 Mar 2013 13:45:56 GMT

Hello,

I am new to Project Trident. I am currently facing problem which I could not solve. Before I install Project Trident, I had already installed SQL Server 2008 Developer edition. After I install Project Trident on the same workstation where the SQL server is installed, everything seems to be working without issue. Then, I tried to install Project Trident on another computer running Windows 7. The installation is successful and connection to the database is successful. However, when I try to launch the Project Trident on the first machine, it generates an "user not authorized" error. Both computer are logged in to the database with different username and both machines are having different account credential, different IP addresses, and different hostname. The problem exists if I reinstall Project Trident on my first computer and try to launch the application on second computer, same error popped out.

Can anyone guide me for this problem?

New Post: Trident governance model

wwahammy — Wed, 20 Mar 2013 16:59:48 GMT

This is very exciting! One thing to remember is that the CC license requires we cite the original source of the document which is "Meritocratic Governance Model" by University of Oxford.

I'd love to hear what other members of the community think. Any suggestions for improvements or changes?

Eric

New Post: Trident governance model

inkouper — Wed, 20 Mar 2013 02:31:53 GMT

As an open source community, we're required to have a governance model. Below is a draft, please comment and suggest changes, updates and revisions (the draft is available as a doc file upon request). After a certain amount of time, we'll need to finalize this draft and post our governance model.

Trident Governance
Draft
March 15, 2013

Introduction and Guiding Principles

The goal of the Trident project is to assist users in automating tasks in experiment implementation or data analysis, management and preservation. This is achieved through the development and implementation of scientific workflows that become part of an integrated environment. The emphasis of Trident is on community involvement in the development and sharing of workflows as well as in the development of technical features for Trident system.

To effectively facilitate community involvement, Trident adopts the following guiding principles:

• Openness. Membership is open to all interested individuals who subscribe to Trident guiding principles and governing rules.
• Community. Trident is a public, community-driven body that develops via commitment and volunteer contributions of its members, supported by Trident Project Management Committee and by Trident Project Leader.
• Transparency. No decisions about the project’s direction, bug fixes or features may be done without community involvement and participation.
• Lazy Consensus. Lazy consensus is a process of reaching consensus with a minimal effort.
When a proposal is put forward, the default assumption is that the community already have consensus. Unless someone objects to the proposal, the work can begin. The proposals will have at least 72 hours before assuming that there are no objections. This requirement ensures that everyone is given enough time to read, digest and respond to the proposal.

Member Participation

The body of Trident community consists of individual members who are actively involved in its efforts. Organizations may also engage in Trident community. Individual or organizational members participate through the discussion forum or by assuming one of the roles described below. A member of the community may have multiple roles.

Roles and Responsibilities

The following roles can be assumed by members of Trident community.

User
Users are community members who are interested in using the Trident system to support their needs. They are the most important members of the community: without them, the project would have no purpose. Anyone can be a user; there are no specific requirements.
Users are encouraged to participate in the life of the project and the community as much as possible. User contributions enable the project team to ensure that they are satisfying the needs of those users. Common user activities include (but are not limited to):

• advocating for use of the project
• informing developers of project strengths and weaknesses
• writing documentation and tutorials
• filing bug reports and feature requests
• participating on the discussion board

How to become one: Use Trident

Contributors
Contributors are community members who submit pieces of code and patches to the project. These contributions may be a one-time occurrence or occur over time. Contributors are encouraged to submit patches that are small at first and grow larger once the contributor has built confidence in the quality of their patches.
Before a contributor’s first patch is put into the repository they must sign a Contributor License Agreement (CLA). The patch can be submitted and discussed but it can’t actually be committed to the repository without a signed CLA.
How to become one: Submit a patch to the Trident project at http://tridentworkflow.codeplex.com/

Committers
Committers are contributors who have shown dedication to Trident, technical expertise and the ability to work well with contributors and users. The committers have responsibilities beyond contributing patches. In particular, committers formally decide on whether patches are entered into the main code repository and add those requests. Additionally, they verify with Outercurve Foundation staff that a potential contributor has a signed CLA before committing a patch to the repository. A committer will use lazy consensus (see below) to decide on whether to commit a patch from a contributor. If the discussion is no longer moving towards a consensus, the committer may use their best judgment on whether to commit the patch.
How to become one: Be a contributor and be nominated to the PMC as a committer. You may nominate yourself.

Project Management Committee (PMC)
The project management committee (PMC) participates in strategic planning, release planning, and approving changes to the governance model. It also makes decisions when community consensus cannot be reached.
The PMC has final say over who can become a committer and will use lazy consensus for approval. Discussion over committer nominations will be done in private.
Membership of the PMC is by invitation from the existing PMC members. A nomination will result in discussion and then a vote by the existing PMC members. PMC membership votes are subject to consensus approval of the current PMC members and will be done in private.
How to become one: Be invited by a current PMC member and have nomination approved by the PMC.

Project Leader
A project leader is a member of the PMC whom the Outercurve Foundation staff consider the primary point of contact or first point of contact for the project for purposes of business operations including domain registrations, and technical services (e.g. code-signing).
In the event there are multiple project leaders, Outercurve staff will consider a request by any single leader as sufficient for action.
How to become one: Have nomination approved by members of the PMC.

Voting

The Trident project realizes that not all decisions can be made using lazy consensus. Issues affecting the strategic direction or legal standing of the project must gain explicit approval in the form of a vote. Every member of the community is encouraged to express their opinions in all discussion and all votes.

This document is licensed under the Creative Commons Attribution-ShareAlike 2.0 UK: England & Wales license (CC BY-SA 2.0 UK, http://creativecommons.org/licenses/by-sa/2.0/uk/).
Free to distribute and make derivatives.

Reviewed: Project Trident 1.2 (Mar 04, 2013)

coloredcontacts — Mon, 04 Mar 2013 16:45:41 GMT

Rated 4 Stars (out of 5) - All components are nice to use!

Commented Issue: Importing of Custom Type Initializers fails [15977]

abhisheks — Wed, 06 Feb 2013 10:53:30 GMT

The source code at:

Microsoft.Research.ScientificWorkflow.TridentComposer.ImportActivityProxy line 121
"WorkflowComposer.ImportTypeInitializer(this.fileReferences, this.registryConnection);"

indicates that an attempt is made to import custom type initializers found in referenced assemblies when activities from said assemblies are imported.

This call is made after the assemblies have been imported into the registry.

One of the first lines of code which imports the custom type initializers at:

Microsoft.Research.ScientificWorkflow.TridentComposer.ActivityComposer line 694
"if (!ActivityComposer.CanContinueWithImport(references, assemblyPath))"

will almost always evaluate to True and cause the custom type initializer import logic to exit before importing the initializers contained within the assembly. This means custom type initializers from that assembly can never be imported. The line calls a method which checks to see if the assemblies have been imported into the registry (and they have because the code to import the activities was run just prior).

I have some thoughts on a possible fix should you concur with my assessment.

Thank you for your time.

Rob
Comments: ** Comment from web user: abhisheks **

Assuming Trident was intentionally designed for this to be the case (keeping the Initializers and Activities in different assemblies), I consider the issue resolved.

No, I don't think so because I have tried this way and not succeeded.

Can you put some light on this issue with working code. This will be a good contribution to the community as there are a couple of open discussions and many other might also be facing this issue.

http://tridentworkflow.codeplex.com/discussions/349717
http://tridentworkflow.codeplex.com/discussions/237674

Commented Issue: Importing of Custom Type Initializers fails [15977]

rbridgart — Wed, 06 Feb 2013 04:25:44 GMT

After some more work I found that a much more substantial code change would most likely be required to address the issue mentioned above than I originally thought.

In reassessing the situation I discovered that as long as I create my CustomTypeInitializers in a separate assembly to my Activities, then the problem doesn't arise.

Assuming Trident was intentionally designed for this to be the case (keeping the Initializers and Activities in different assemblies), I consider the issue resolved.

New Post: Difference between x86 and x64 builds

wwahammy — Wed, 30 Jan 2013 22:24:54 GMT

I guess my question is more related to the actual details of what is different between the two builds? Based upon what seems like a limited number of differences, I would think it'd be possible to build Trident as an AnyCPU. I just need to know if there's practical differences between the two and if so, whether they can be worked around.