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Marcus Hanwell
Works at Kitware, Inc.
Attended University of Sheffield
Lives in Rexford, NY, USA
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Marcus Hanwell

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From snow in Buffalo on Friday to sunshine and coffee in Cambridge, MA today. A lot of miles the last few days along with extremes of weather!
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We were hoping to, the whole family will likely be out as it is school holidays too.
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Nice article about Git, GitHub, shutdown of several other code hosting services (including Google Code's recent announcement and Gitorious not mentioned in the article).  I think this paragraph summarizes why hosting on one central site matters less today than it once did,

'The irony of GitHub’s success, however, is the open source world has returned to a central repository for all its free code. But this time, DiBona—like most other coders—is rather pleased that everything is in one place. Having one central location allows people to collaborate more easily on, well, almost anything. And because of the unique way GitHub is designed, the eggs-in-the-same-basket issue isn’t as pressing as it was with SourceForge. “GitHub matters a lot, but it’s not like you’re stuck there,” DiBona says.'
Google Code was supposed to spread the open source religion. But then GitHub came along. And GitHub, it turns out, was a much better preacher.
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This is a really interesting article, well worth reading.
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Should governments develop their own software?
Government may not have been good at software development and innovation in the past, but open source is changing the equation.
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Nice article on the benefits of negativity
 
" In any case, the reviewers’ request completely missed the point, which was to publish what we’d done so that others might pick up the baton and carry on from where we had left off, rather than blindly repeating the experiment."
The scientific literature is dominated by positive results, but negative findings are also important and need to be published
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Visualization Toolkit (VTK) 6.2 released, featuring among many other things the new OpenGL 2+ rendering backend we have been working on under our NIH maintenance grant! Thanks to everyone who contributed.
The next release of VTK is ready
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VTK supports things like multisampling if your card has it, and we were talking about adding shaders to OpenGL 2 that use shader based approaches. I know ParaView disables antialiasing by default, and would have to check if it is possible to enable it. You raise a good point, and for client-side rendering it should be possible (with server-side + compositing it is harder as I understand it, and would need to be a post-processing step on the composited image).
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Feeling a little stir crazy after three solid months in the suburbs. Looking forward to some travel, seeing some cities with character. I think three months is about my limit!
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I think that is all I need, and I have a week in San Jose coming up. We have planned three days in DC too, but not until April.
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Happy Arduino Day!
With Arduino Day 2015 just around the corner, I've rounded up some of my favorite Arduino projects, tools, and articles to get you excited and inspired. So whether you're celebrating at one of the many community events or digging in to a project on your own, happy tinkering!
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I hope they will, but unfortunately doubt it...
 
Elsevier, the publisher of Research in Autism Spectrum Disorders (RASD) and Research in Developmental Disabilities (RIDD) is no stranger to controversy. It became the focus of a campaign in 2012 because of its pricing strateg...
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No understanding of why they have flights at this time... Pretty empty, can't even get a coffee it is so early! Enjoyed the weather, and a productive week in the area.
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Finally managed to obtain coffee! They even managed a last minute full Pre treatment
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Are you a student, do you know one? Let them know about some of the great project ideas for +Google Summer of Code with VTK!
 
Hi folks,

I wanted to make a pitch for the Google Summer of Code topics listed below. Better support for shared-memory parallelism is essential for a healthy VTK for many years to come. If you are a student, please consider writing a proposal for one of these topics. If you are a professor/mentor, please encourage strong developers in your institution to apply.

References:
http://www.vtk.org/Wiki/VTK/GSoC_2015
http://www.google-melange.com/gsoc/homepage/google/gsoc2015


Shared Memory Parallelism in VTK

Brief explanation: Development of multi-threaded algorithms in VTK. Multiple R&D efforts are leading the creation of an infrastructure to support next generation multi-threaded parallel algorithm development in VTK. These efforts are based on modern parallel libraries such as Intel TBB and Inria KAAPI. The main goal of this project will be the development of algorithms that leverage this infrastructure. The focus will be on upgrading existing core algorithms such as iso-surfacing, clipping, cutting, warping etc. to be parallel. Ideally, this will include modernization of the old multi-threading code in the imaging pipeline.

Expected results: A number of algorithms that execute in parallel using shared memory. Scalability of new algorithms will have to be measured and documented. Development of regression tests and examples will be also expected.

Prerequisites: Experience in C++ and multi-threaded code development. Understanding of core visualization algorithms and data structures. Some experience in VTK ideally but not necessary.

Mentor: Berk Geveci (berk dot geveci at kitware dot com) and David Gobbi (david dot gobbi at gmail dot com)

Fine-Grained Parallelism in VTK-m

Brief explanation: VTK-m is a toolkit of scientific visualization algorithms for emerging processor architectures ( GPU's and Coprocessors's ). VTK-m is designed for fine-grained concurrency and provides abstract data and execution models that can be applied to a variety of algorithms. The goal of the project will be on developing algorithms such as Slice by implicit surface, Gradient, Streamlines, External Faces, Resample, etc. using VTKM-m data and execution model.

Expected results: A collection of algorithms that are processor architecture agnostic and execute on GPU's and Coprocessor's using VTK-m's data and execution model. Performance of new algorithms will have to be measured and documented. Development of regression tests and examples will be also expected.

Prerequisites: Experience in templated C++ development, visualization algorithms, data structures and highly parallel architectures such as GPU's. Some experience in VTK or CUDA or OpenCL would be ideal but not necessary.

Mentor: Robert Maynard (robert dot maynard at kitware dot com) and Kenneth Moreland (kmorel at sandia dot gov)
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Are we ready to declare daylight savings time a failed experiment yet? I know I am!
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+Marcus Hanwell compare updating the clocks and keeping the opening/closing time of shops in leaflets and such. I do agree that the experiment isn't working but the alternatives aren't that great.
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Excellent post from +Luis Ibanez introducing gRPC from Google, a new RPC server using HTTP/2 and a new version of protocol buffers. A number of languages are supported too, including C++ and Python. Check it out over on +Opensource.com!
A deeper dive into the news that Google recently released gRPC as open source, an efficient framework for remote procedure calls (RPC) that uses a variety of programming languages.
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Work
Occupation
Technical Leader at Kitware, Inc.
Employment
  • Kitware, Inc.
    Technical Leader, 2012 - present
  • Kitware, Inc.
    R&D Engineer, 2009 - 2012
  • University of Pittsburgh
    Postdoctoral Fellow, 2007 - 2009
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Rexford, NY, USA
Previously
Sheffield, UK - Pittsburgh, PA, USA - Mountain View, CA, USA - Clifton Park, NY, USA
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Tagline
Physicist, chemist, scientific visualization technical leader at Kitware.
Introduction
I work at Kitware, where my job involves developing open source, cross platform scientific visualization, pre and post processing code (mainly in C++, OpenGL, Qt) for scientific visualization. Strong believer in open science, open data and open source and proud member of Blue Obelisk. Everything posted is my opinion (may or may not coincide with my company, significant other, animal guide, etc).

I work on Open Chemistry software, such as Avogadro as well as other open source toolkits and applications VTK, ParaView, CMakeKDE and several other open source projects. My Ph.D. and degree are both in physics, with a large component of materials engineering. Working hard to improve the quality and openness of open source scientific software, specifically chemistry related software such as Avogadro and 2D charting/plotting in VTK.

Favourite quotations:

"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." Albert Einstein.

“I believe the simplest explanation is, there is no God. No one created the universe and no one directs our fate. This leads me to a profound realization that there probably is no heaven and no afterlife either. We have this one life to appreciate the grand design of the universe and for that, I am extremely grateful.” Stephen Hawking.
Bragging rights
My office door was a TARDIS (and it was bigger on the inside)!
Education
  • University of Sheffield
    Physics (Ph.D.), 2003 - 2007
  • University of Sheffield
    Physics, 2000 - 2003
Basic Information
Gender
Male
Other names
cryos
Staff are friendly enough, used them twice and been disappointed in wait times in store (with no decent estimate offered). Last pair of glasses ordered a week ago, seems like they messed up my order, delayed another week and not even an apology for the delay. Selection is OK, service isn't great. I will keep looking for a friendlier place that can at least see me in a reasonable time and offer decent estimates when buying glasses.
Public - 3 weeks ago
reviewed 3 weeks ago
Very tasty, fast service
Public - 6 months ago
reviewed 6 months ago
Meh would best describe the pizza, not bad but there are many better pizza places in the area.
Public - a year ago
reviewed a year ago
35 reviews
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Too salty, expensive, better places around. For the price I expect much better, the vindaloo lacked potato despite the menu stating it would be there, the sauce was too thick and too salty. Wouldn't go back, or recommend. Asked for very spicy, was barely medium.
Public - 6 months ago
reviewed 6 months ago
Nice place, great beer, can be really tough actually tasting any on a weekend due to how busy they get.
Public - a year ago
reviewed a year ago
Good sandwiches, can get pretty slow at lunch time and a little pricey but they are usually tasty.
Public - a year ago
reviewed a year ago