April 2014 - firedrake - imperial.ac.uk

Serendipity elements
by Colin Cotter 28 Apr '14

28 Apr '14

The following looks interesting. There is now a family of FEEC spaces corresponding to serendipity elements on quads/hexes. http://arxiv.org/abs/1404.6275 cheers --cjc

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Fwd: [atmos-seminars] Atmos seminar - David Jackson, Met Office - 29 April 11.30 Huxley 711C
by Andrew McRae 27 Apr '14

27 Apr '14

This might be of interest to the more application-driven members of the group. Protip: an abridged version of this talk used these slides<http://www.jodrellbank.manchester.ac.uk/meetings/nam2012/archive/MST3/Jacks…>(from 2012) ---------- Forwarded message ---------- From: Williams, Sian R <sian.williams07(a)imperial.ac.uk> Date: 22 April 2014 11:31 Subject: [atmos-seminars] Atmos seminar - David Jackson, Met Office - 29 April 11.30 Huxley 711C To: spat <spat(a)imperial.ac.uk>, atmos-seminars < atmos-seminars(a)imperial.ac.uk> Hi everyone, David Jackson from the Met Office will be giving the Atmospheric Physics seminar next Tuesday, which might be interesting for ‘space’ people too. As usual it will take place at 11.30am in Huxley 711C. The title of his talk is "The Met Office Unified Model and its extension to the thermosphere”. The abstract is below. If anyone would like to meet with David after his talk please let me know in the next few days. He is happy to discuss the Met Office’s space weather activities more informally in the afternoon if this is interesting to anyone. Best wishes, Sian *The Met Office Unified Model and its extension to the thermosphere* The Met Office Unified Model (UM) is a troposphere / stratosphere / mesosphere model which is used widely for both weather forecasting and climate studies. It includes a comprehensive representation of atmospheric dynamics, physics and chemistry, and currently has an upper boundary near 85 km. In order to develop an improved capability for space weather forecasts, it is desirable to develop a coupled system of models representing the domain from the Sun to the Earth's surface. Much space weather forecast research is focused on the thermosphere and ionosphere, since that is where many space weather impacts are seen. While the thermosphere and ionosphere are largely driven from above, recent research has shown that the coupling between this region and the lower atmosphere is also important. For example, non-migrating tides forced in the tropical troposphere have been linked to variations in the ionospheric F region. Therefore, representation of such coupling is important. An attractive way of doing this is by building a "whole atmosphere" model, which spans the neutral atmosphere from the Earth's surface to the exobase (around 600 km) and represents the coupling between different atmospheric levels in a self-consistent manner. In this presentation, the dynamical, physical and chemical developments required to make this extended model a reality are discussed, and some initial results are presented.

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Reminder, meeting today 1pm
by Lawrence Mitchell 25 Apr '14

25 Apr '14

Dear firedrakers, for those of you who are around, a reminder that we have a meeting today at 1pm in WPL301. Lawrence

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Re: [firedrake] Talk at FEniCS '14
by Fabio Luporini 25 Apr '14

25 Apr '14

Right, I should submit it to arxiv. How does this work usually? I guess I have to submit it, then they "review" it, and finally they just upload it, nothing more, right? And, as far as I know, this process shouldn't take much. -- Fabio 2014-04-25 12:13 GMT+01:00 Mitchell, Lawrence < lawrence.mitchell(a)imperial.ac.uk>: > On 25/04/14 11:59, Fabio Luporini wrote: > > Dear firedrakers, > > > > Attached you find the abstract for the talk I am planning to deliver at > > FEniCS '14. Any feedback would be appreciated. > > > > I think this looks fine. It would be nice to reference your submitted > SC paper, is it on the arxiv? > > Lawrence > > > _______________________________________________ > firedrake mailing list > firedrake(a)imperial.ac.uk > https://mailman.ic.ac.uk/mailman/listinfo/firedrake >

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Talk at FEniCS '14
by Fabio Luporini 25 Apr '14

25 Apr '14

Dear firedrakers, Attached you find the abstract for the talk I am planning to deliver at FEniCS '14. Any feedback would be appreciated. Regards -- Fabio

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petsc/petsc4py incompatibilities
by Lawrence Mitchell 23 Apr '14

23 Apr '14

Dear firedrakers, we currently rely on petsc next, but you may have noticed, if installing petsc4py recently, that you can't build it with petsc next right now. Hopefully our dependencies will settle down a bit soon and you won't have to go through this upgrade dance. In the mean time, if you see a pip install petsc4py error like the below: src/petsc4py.PETSc.c:206419:43: error: ‘DMADDA’ undeclared (first use in this function) src/petsc4py.PETSc.c:206419:43: note: each undeclared identifier is reported only once for each function it appears in error: command '/usr/bin/mpicc' failed with exit status 1 Please do the following: $ git clone https://bitbucket.org/petsc/petsc4py Apply this patch: https://gist.github.com/wence-/11179460 and then in the petsc4py directory $ sudo python setup.py install (or no sudo if you haven't been using sudo to install things) Cheers, Lawrence

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SWE on the sphere
by Cotter, Colin J 21 Apr '14

21 Apr '14

Dear Firedrakers, Here is a 50 day simulation of the mountain test case on the sphere on icosehedral mesh level 5 with BDM1-DG0 elements. https://www.youtube.com/watch?v=R_y_G9NucD4&feature=youtu.be cheers --cjc

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Re: [firedrake] Power outage
by Andrew McRae 18 Apr '14

18 Apr '14

Foraker was already powered up and is on the Linux Mint welcome screen. What should I do? On 18 Apr 2014 11:23, "Rathgeber, Florian" <f.rathgeber10(a)imperial.ac.uk> wrote: > On 18/04/14 10:56, Andrew McRae wrote: > > I can swing by, but it won't be until after midday. Does anyone else in > > 3.01 want their workstations powering up? > > That'd be absolutely brilliant, consider yourself a life saver :) > > It appears the other machines (speke, erebus, adept) have come back up. > > If you can be bothered, there's also 2 small boxes under the desk where > Martin/Ana used to sit (a small NAS and a shuttle box) which haven't > come back up. > > Thanks a bunch! > Florian > > > On 18 April 2014 08:06, Rathgeber, Florian <f.rathgeber10(a)imperial.ac.uk > > <mailto:f.rathgeber10@imperial.ac.uk>> wrote: > > > > Hi all, > > > > there seems to have been a power outage around 1:30 last night and > > unfortunately foraker hasn't come back up after that. Does anyone > happen > > to be in college today and could turn it back on? It's the Z820 > > workstation under my desk upstairs in WPL 3.01 (next to filing > cabinet). > > > > Many thanks, > > Florian > >

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Re: [firedrake] Power outage
by Andrew McRae 18 Apr '14

18 Apr '14

I can swing by, but it won't be until after midday. Does anyone else in 3.01 want their workstations powering up? On 18 April 2014 08:06, Rathgeber, Florian <f.rathgeber10(a)imperial.ac.uk>wrote: > Hi all, > > there seems to have been a power outage around 1:30 last night and > unfortunately foraker hasn't come back up after that. Does anyone happen > to be in college today and could turn it back on? It's the Z820 > workstation under my desk upstairs in WPL 3.01 (next to filing cabinet). > > Many thanks, > Florian > >

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Power outage
by Florian Rathgeber 18 Apr '14

18 Apr '14

Hi all, there seems to have been a power outage around 1:30 last night and unfortunately foraker hasn't come back up after that. Does anyone happen to be in college today and could turn it back on? It's the Z820 workstation under my desk upstairs in WPL 3.01 (next to filing cabinet). Many thanks, Florian

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