We hope you will enjoy this 20th anniversary release!!!
November 6th, 2018: McStas user survey 2018
To assess the current use of McStas, we have put together the below survey for users of our neutron Monte Carlo ray-tracing package.
Using the survey results, we hope to gain insight and statistics on the McStas user community, where it is currently based, which operating systems and computing infrastructures are used, and to what satisfaction the package, support infrastructure and documentation is used. The survey should also give us a clear picture where to focus our future efforts.
We hope you will help us by investing a few minutes in the survey:
On behalf of the McStas team,
September 29th, 2018: Release 2.4.1 works OK on macOS 10.14 Mojave
I can confirm that the latest McStas works fine on the newest macOS
release, even though the distributed "Check-PL-dependencies" script will report
both 10.13 and 10.14 as an unsupported macOS releases.
If you need to install our Perl-based tool chain on 10.13 High
Sierra or 10.14 Mojave, the easiest way is to download an updated version of the above script, get
our GitHub (I will also put a copy alongside the existing .tgz for
If, after an upgrade to Mojave you get compilation issues
with the error message
mccode-r.h:39:18: fatal error: math.h: No such file or
then please run the following commands in a terminal:
May 18th, 2018: MDANSE 2018
Does the combination of DFT or classical MD with McStas for modeling experimental data
If so, please consider participating in the MDANSE
2018 event in Tenerife this fall. Registration closes on May 31st 2018.
(You can also read more in this a post to mcstas-users)
April 30th, 2018: Release 2.4.1 works OK on Ubuntu 18.04 + a workaround
I have tested McStas 2.4.1 with the recent Ubuntu 18.04 LTS "bionic
beaver", and the usual installation recipe works.
The only found issue so far relates to the behaviour of the
Perl+PGPLOT mcplot.pl plotter which out of the box fails
with the error message: "%giza - ERROR - giza_open_device: Unknown
device, device not opened" (see below graphics also).
(In fact the problem was known already for Debian testing, see our related GitHub issue)
The following solutions/workarounds exist:
Use the Python-based pyqtgraph plotter
instead, i.e. mcplot (or mcplot-pyqtgraph). This
would give you graphics like this:
- Configure pgplot/giza for "XWIN" driver:
Either edit your
replacing XSERV with XWIN or set the related
environment variable in the shell, i.e.
The solution will give you this appearance:
- Force-configure to use the legacy PGPLOT:
commands in a shell and get your "normal" PGPLOT window back
The solution will give you this appearance (as usual):
- cd /usr/lib/x86_64-linux-gnu
- sudo ln -sf ../libpgplot.so libpgplot.so.0
- sudo ln -sf ../libcpgplot.so libcpgplot.so.0
March 2018: McStas-McXtrace team participates in GPU Hackathon
As some of you may have already seen via our facebook page or on twitter, a joint
McStas-McXtrace team visited the 2018
GPU Hackathon in Dresden in March.
We can not a such claim that the software fully runs on
NVIDIA GPU's, but we certainly gained knowledge and will investigate
The team pariticpating in Dresden were
- DTU: Peter Willendrup, Jakob Garde, DTU Physics and Giovanni Fevola, DTU Energy
- ILL: Emmannuel Farhi, ILL Spectroscopy Group / Computing for
- UCPH: Mads Bertelsen, Niels Bohr Institute
Here is a few photos from the event - and also a PDF from
the final presentation, put together by Mads Bertelsen,
University of Copenhagen
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Last Modified: Thursday, 13-Dec-2018 12:29:02 CET