Re: [Users] Number of processors and ppn used

[Nisa Amir]

When I run the commands on my laptop the simulation just killed by itself.
I am attaching the err file. Please help me in this regard.

On Thu, Mar 31, 2022 at 5:52 AM Roland Haas  wrote:

> Hello Nisa,
>
> > Okay thanks for your guidance. Can we run it on our computer by using the
> > terminal as there is more space on the laptop.
>
> Yes this run will likely run on your laptop using a terminal.
>
> You can copy and paste the commands from the Jupyter cells (leaving out
> the %%bash line) and they will work on your laptop as well.
>
> Yours,
> Roland
>
> --
> My email is as private as my paper mail. I therefore support encrypting
> and signing email messages. Get my PGP key from http://keys.gnupg.net.
>


Merger.err
Description: Binary data
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Re: [Users] Number of processors and ppn used

[Nisa Amir]

Okay thanks for your guidance. Can we run it on our computer by using the
terminal as there is more space on the laptop.

On Wed, 30 Mar 2022, 7:04 am Roland Haas,  wrote:

> Hello Nisa,
>
> > I am using the parfile available in the gallery for binary neutron star
> > mergers nsnstohmns.
>
> According to the gallery page, this requires 8.8 GB of RAM. The
> tutorial server only has 8GB of memory so this run is quite likely to
> fail (see the output of the "free -h" command in a %%bash cell).
>
> On your laptop I do not know of course.
>
> While the HMNS is small for a NSNS simulation (too small actually as
> the resolution is about a factor of 2 too coarse to be reasonable), it
> is unfortunately a bit too large for the shared tutorial server. You
> are probably best off looking for an allocation at a local compute
> center or a workstation at your institute.
>
> Yours,
> Roland
>
> --
> My email is as private as my paper mail. I therefore support encrypting
> and signing email messages. Get my PGP key from http://keys.gnupg.net.
>
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Re: [Users] Number of processors and ppn used

[Nisa Amir]

I am using the parfile available in the gallery for binary neutron star
mergers nsnstohmns.


On Wed, 30 Mar 2022, 6:43 am Roland Haas,  wrote:

> Hello Nisa,
>
> > Also I get the same issue when I run and submit the simulation on the
> > official Einstein Toolkit servel by using the jupyter note book
>
> Are you running a parfile of your own or the tov example? The
> tutorial server does not have lots of memory available and using too
> high resolution you can easily run out of memory.
>
> Yours,
> Roland
>
> --
> My email is as private as my paper mail. I therefore support encrypting
> and signing email messages. Get my PGP key from http://keys.gnupg.net.
>
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Re: [Users] Number of processors and ppn used

[Nisa Amir]

Also I get the same issue when I run and submit the simulation on the
official Einstein Toolkit servel by using the jupyter note book

On Wed, 30 Mar 2022, 6:44 am Nisa Amir,  wrote:

> This happens on the laptop that I autofigured by following the tutorial.
> After the warning the the job has been started I think the issue is that
> the memory has been killed and it stops further processing of the
> simulation.
>
> On Wed, 30 Mar 2022, 4:35 am Roland Haas,  wrote:
>
>> Hello Nisa,
>>
>> > When I submit my simulation
>> > %%bash
>> > # start simulation segment
>> > ./simfactory/bin/sim submit NH --cores=1 --ppn-used=8 --walltime=0:2:00
>> > Also tried this %%bash
>> >
>> > ./simfactory/bin/sim submit NH --cores=2 --num-threads=1
>> --walltime=0:20:00
>> > again it gives the same warning
>> > it gives the warning that Total number of threads and number of cores
>> per
>> > node are inconsistent: procs=1, ppn-used=8 (procs must be an integer
>> > multiple of ppn-used)
>> > and after that when i run the parameter file it does not run completely
>> and
>> > shows only half or more than half output.
>> > How can I resolve this issue so that I get the complete output.
>>
>> If there is output missing then most likely the job was killed by the
>> queuing system since it ran out of walltime. Note that the first
>> command requested only 2 minutes of walltime which is almost certainly
>> too short for any "real" run.
>>
>> Usually this will show up at the bottom of the *.err file.
>>
>> You can either let simfactory print both the *.out and the *.err file
>> to screen (or pipe into less) using:
>>
>> ./simfactory/bin/sim show-output NH  | less
>>
>> or query where the simulation output directory is:
>>
>> ./simfactory/bin/sim get-output-dir NH
>>
>> then use cd to go there and less to take a look at the err file.
>>
>> The other option is that the job hung, which will usually also show up
>> as the queueing system killing your run due to it running out of
>> walltime, but also will typically mean that the last output (timestamp
>> of the output files eg *.asc visible via ls -l) is much older than the
>> time the job was killed by the queuing system.
>>
>> If there is no queueing system (laptop) then something else could kill
>> the job (eg runs out of memory).
>>
>> The warning about ppn-use is due to inconsistent options. Namely you
>> are claiming via ppn-used=8 to use 8 cores per node but then are
>> requesting only 1 core. It is just a warning though, if the job started
>> then you do not have to worry. If you would like to avoid the warning
>> you could use --cores 1 --ppn-used 1. Does his happen on a cluster
>> (private? One officially supported by the ET?)? Or you laptop that you
>> auto-configured via "sim setup-silent" or on the tutorial server?
>>
>> Yours,
>> Roland
>>
>> --
>> My email is as private as my paper mail. I therefore support encrypting
>> and signing email messages. Get my PGP key from http://keys.gnupg.net.
>>
>
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Re: [Users] Number of processors and ppn used

[Nisa Amir]

This happens on the laptop that I autofigured by following the tutorial.
After the warning the the job has been started I think the issue is that
the memory has been killed and it stops further processing of the
simulation.

On Wed, 30 Mar 2022, 4:35 am Roland Haas,  wrote:

> Hello Nisa,
>
> > When I submit my simulation
> > %%bash
> > # start simulation segment
> > ./simfactory/bin/sim submit NH --cores=1 --ppn-used=8 --walltime=0:2:00
> > Also tried this %%bash
> >
> > ./simfactory/bin/sim submit NH --cores=2 --num-threads=1
> --walltime=0:20:00
> > again it gives the same warning
> > it gives the warning that Total number of threads and number of cores per
> > node are inconsistent: procs=1, ppn-used=8 (procs must be an integer
> > multiple of ppn-used)
> > and after that when i run the parameter file it does not run completely
> and
> > shows only half or more than half output.
> > How can I resolve this issue so that I get the complete output.
>
> If there is output missing then most likely the job was killed by the
> queuing system since it ran out of walltime. Note that the first
> command requested only 2 minutes of walltime which is almost certainly
> too short for any "real" run.
>
> Usually this will show up at the bottom of the *.err file.
>
> You can either let simfactory print both the *.out and the *.err file
> to screen (or pipe into less) using:
>
> ./simfactory/bin/sim show-output NH  | less
>
> or query where the simulation output directory is:
>
> ./simfactory/bin/sim get-output-dir NH
>
> then use cd to go there and less to take a look at the err file.
>
> The other option is that the job hung, which will usually also show up
> as the queueing system killing your run due to it running out of
> walltime, but also will typically mean that the last output (timestamp
> of the output files eg *.asc visible via ls -l) is much older than the
> time the job was killed by the queuing system.
>
> If there is no queueing system (laptop) then something else could kill
> the job (eg runs out of memory).
>
> The warning about ppn-use is due to inconsistent options. Namely you
> are claiming via ppn-used=8 to use 8 cores per node but then are
> requesting only 1 core. It is just a warning though, if the job started
> then you do not have to worry. If you would like to avoid the warning
> you could use --cores 1 --ppn-used 1. Does his happen on a cluster
> (private? One officially supported by the ET?)? Or you laptop that you
> auto-configured via "sim setup-silent" or on the tutorial server?
>
> Yours,
> Roland
>
> --
> My email is as private as my paper mail. I therefore support encrypting
> and signing email messages. Get my PGP key from http://keys.gnupg.net.
>
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[Users] Number of processors and ppn used

[Nisa Amir]

Hello all,

When I submit my simulation
%%bash
# start simulation segment
./simfactory/bin/sim submit NH --cores=1 --ppn-used=8 --walltime=0:2:00
Also tried this %%bash

./simfactory/bin/sim submit NH --cores=2 --num-threads=1 --walltime=0:20:00
again it gives the same warning
it gives the warning that Total number of threads and number of cores per
node are inconsistent: procs=1, ppn-used=8 (procs must be an integer
multiple of ppn-used)
and after that when i run the parameter file it does not run completely and
shows only half or more than half output.
How can I resolve this issue so that I get the complete output.
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[Users] LORENE Initial Data

[Nisa Amir]

How can i reproduce initial data file  (e.g
G2_I12vs12_D4R33T21_45km.resu
)
for a new neutron star parameters with LORENE code?

I have already installed and compiled the LORENE, but do not know what
to do afterwards.
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Re: [Users] kesnar spacetime graphs.

[Nisa Amir]

Thanks alott

On Sun, 26 Apr 2020, 9:02 pm Roland Haas,  wrote:

> Hello Nisa Amir,
>
> >   I have tried everything but again getting the same results. A day
> before
> > Erick schentter send me an asc file they have used for plotting the
> figure.
> > their value of gxx is growing slowly but in my file it grows rapidly.
> > Attaching both files. is there something to do with the values of
> > parameters p1 and p2?
> I would not be able to tell. However I (finally) gave this a try see a
> similar very rapid growth in gxx (much more rapid than the growth in
> the paper). I will try and see if I can find out which version of the
> Einstein Toolkit first shows this behaviour.
>
> Yours,
> Roland
>
> --
> My email is as private as my paper mail. I therefore support encrypting
> and signing email messages. Get my PGP key from http://pgp.mit.edu .
>
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Re: [Users] kesnar spacetime graphs.

[Nisa Amir]

  I have tried everything but again getting the same results. A day before
Erick schentter send me an asc file they have used for plotting the figure.
their value of gxx is growing slowly but in my file it grows rapidly.
Attaching both files. is there something to do with the values of
parameters p1 and p2?

On Fri, Apr 17, 2020 at 3:00 PM Roland Haas  wrote:

> Hello Nisa Amir,
>
> from your gnuplot commands:
>
> > plot 'admbase-metric.norm2.asc' ev 5 u 2:3 w p ls 7 title "g_{xx}
>
> you are still using the 2-norm since the filename contains "norm2". The
> file that contains the maximum values will be
> "admbase-metric.maximum.asc". If not such file is output, which, given
> your parameter file, seems likely, then you can either edit the
> parameter file by changing:
>
> IOBasic::outInfo_reductions = "norm2"
>
> to read
>
> IOBasic::outInfo_reductions = "norm2 maximum"
>
> or change:
>
> IOASCII::out0D_every = 0
> IOASCII::out0D_vars  = "
> Carpet::timing
> "
>
> to
>
> IOASCII::out0D_every = 1
> IOASCII::out0D_vars  = "
> Carpet::timing
> ADMBase::metric
> "
>
> and use the file admbase-metric..asc (two "." before "asc"),
>
> or, alternatively, use the file
>
> admbase-metric.x.asc
>
> which is already output. That file contains the values of the metric
> along the x-axis and since the Kasner spacetime is homogeneous you can
> pick any of the values to plot them.
>
> To pick the value for just one point you can try to use some inline
> filtering in gnuplot, something like:
>
> plot "gawk '$10==0. && $11==0. && $12 == 0.' admbase-metric.x.asc" u 10:13
> w p ls 7 title "g_{xx} (numerical)"
>
> which select only those lines where columns 10, 11 and 12 (x,y,z
> coordinates) are 0.
>
> Yours,
> Roland
>
> > I have tried plotting the admbase-maximum.asc but again getting the same
> > results. I am attaching my gnuplot commands, maybe I am making some
> mistake
> > here. KIndly have a look.
> > #set term png enhanced font "Vera,18" crop
> > set term postscript enhanced color #dashed
> > set size 0.6, 0.6
> > set xlabel 't'
> > set style line 1 lt 1 lw 3 pt 1
> > set style line 2 lt 2 lw 3 pt 2
> > set style line 3 lt 3 lw 3 pt 3
> > set style line 4 lt 4 lw 3 pt 4
> > set style line 5 lt 5 lw 3 pt 5
> > set style line 6 lt rgb "blue" #lw 0.1 pt 6
> > set style line 7 lt rgb "red" #lw 0.1 pt 6
> > set key left Left reverse
> > set yrange [:200]
> > set log y
> > set output "kasner.eps"
> > plot 'admbase-metric.norm2.asc' ev 5 u 2:3 w p ls 7 title "g_{xx}
> > (numerical)",\
> >  'admbase-metric.norm2.asc' ev 5 u 2:($2**(4.0/3.0)) w l ls 7 title
> > "g_{xx} (exact)",\
> >  'admbase-metric.norm2.asc' ev 5 u 2:8 w p ls 6 title "g_{zz}
> > (numerical)",\
> >  'admbase-metric.norm2.asc' ev 5 u 2:($2**(-2.0/3.0)) w l ls 6 title
> > "g_{zz} (exact)"
> >
> > On Fri, Apr 17, 2020 at 3:02 AM Roland Haas  wrote:
> >
> > > Hello Nisa Amir,
> > >
> > > (this is just a guess): You are including a file
> > > admbase-lapse.norm2.asc in the email which is the the 2-norm of the
> > > lapse (\sum_i \alpha(x_i)^2) while the paper in figure 20 shows the
> > > value of the metric components. So (assuming that attaching
> > > admbase-lapse instead of admbase-gxx was a mistake) I should try and
> > > plot something like admbase-gxx.maximum.asc which would be the maximum
> > > value on the grid which, since the spacetime is homogeneous, is
> > > identical to the value anywhere on the grid.
> > >
> > > I am admittedly somewhat doubtful whether using the wrong norm is the
> > > only issue here though.
> > >
> > > Yours,
> > > Roland
> > >
> > > > Hello,
> > > >
> > > > Hope all of you are doing well. I am trying to replicate some
> examples
> > > > given in par directory of the Cactus for practice. I have run the
> > > parameter
> > > > file kasner.par, have obtained the results but my graph is not
> correct
> > > > according to the paper arXiv-.3344. I am attaching the parameter
> file
> > > > which I have run, the resulting .asc file and the graph I have
> obtained.
> > > > Kindly, anyone guide me what mistake I am making.
>

Re: [Users] kesnar spacetime graphs.

[Nisa Amir]

I have tried plotting the admbase-maximum.asc but again getting the same
results. I am attaching my gnuplot commands, maybe I am making some mistake
here. KIndly have a look.
#set term png enhanced font "Vera,18" crop
set term postscript enhanced color #dashed
set size 0.6, 0.6
set xlabel 't'
set style line 1 lt 1 lw 3 pt 1
set style line 2 lt 2 lw 3 pt 2
set style line 3 lt 3 lw 3 pt 3
set style line 4 lt 4 lw 3 pt 4
set style line 5 lt 5 lw 3 pt 5
set style line 6 lt rgb "blue" #lw 0.1 pt 6
set style line 7 lt rgb "red" #lw 0.1 pt 6
set key left Left reverse
set yrange [:200]
set log y
set output "kasner.eps"
plot 'admbase-metric.norm2.asc' ev 5 u 2:3 w p ls 7 title "g_{xx}
(numerical)",\
 'admbase-metric.norm2.asc' ev 5 u 2:($2**(4.0/3.0)) w l ls 7 title
"g_{xx} (exact)",\
 'admbase-metric.norm2.asc' ev 5 u 2:8 w p ls 6 title "g_{zz}
(numerical)",\
 'admbase-metric.norm2.asc' ev 5 u 2:($2**(-2.0/3.0)) w l ls 6 title
"g_{zz} (exact)"

On Fri, Apr 17, 2020 at 3:02 AM Roland Haas  wrote:

> Hello Nisa Amir,
>
> (this is just a guess): You are including a file
> admbase-lapse.norm2.asc in the email which is the the 2-norm of the
> lapse (\sum_i \alpha(x_i)^2) while the paper in figure 20 shows the
> value of the metric components. So (assuming that attaching
> admbase-lapse instead of admbase-gxx was a mistake) I should try and
> plot something like admbase-gxx.maximum.asc which would be the maximum
> value on the grid which, since the spacetime is homogeneous, is
> identical to the value anywhere on the grid.
>
> I am admittedly somewhat doubtful whether using the wrong norm is the
> only issue here though.
>
> Yours,
> Roland
>
> > Hello,
> >
> > Hope all of you are doing well. I am trying to replicate some examples
> > given in par directory of the Cactus for practice. I have run the
> parameter
> > file kasner.par, have obtained the results but my graph is not correct
> > according to the paper arXiv-.3344. I am attaching the parameter file
> > which I have run, the resulting .asc file and the graph I have obtained.
> > Kindly, anyone guide me what mistake I am making.
> >
> > Thanks
>
>
> --
> My email is as private as my paper mail. I therefore support encrypting
> and signing email messages. Get my PGP key from http://pgp.mit.edu .
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# Scalar ASCII output created by CarpetIOScalar
# created on nisa-HP-EliteBook-8460p by nisa on Apr 13 2020 at 18:35:59+
# parameter filename: "/home/nisa/simulations/kasner/output-/kasner.par"
#
# ADMBASE::gxx (admbase-metric)
# 1:iteration 2:time 3:data
# data columns: 3:gxx 4:gxy 5:gxz 6:gyy 7:gyz 8:gzz
0 1 1 0 0 1 0 1
1 1.1 1.14262536484615 0 0 1.14262536484615 0 0.935513157482649
2 1.2 1.30559331329545 0 0 1.30559331329545 0 0.875184867239621
3 1.3 1.49180537181367 0 0 1.49180537181367 0 0.818746975473457
4 1.4 1.7045769328583 0 0 1.7045769328583 0 0.765948618644581
5 1.5 1.94769629051201 0 0 1.94769629051201 0 0.716555108758124
6 1.6 2.22549209807453 0 0 2.22549209807453 0 0.670346890508962
7 1.7 2.54291044935337 0 0 2.54291044935337 0 0.627118565653649
8 1.8 2.90560295695859 0 0 2.90560295695859 0 0.586677980276328
9 1.9 3.320027396992 0 0 3.320027396992 0 0.548845370894947
10 2 3.79356271364014 0 0 3.79356271364014 0 0.513452565615329
11 2.1 4.33464043335125 0 0 4.33464043335125 0 0.480342236785041
12 2.2 4.95289483109888 0 0 4.95289483109888 0 0.449367201827678
13 2.3 5.65933452597035 0 0 5.65933452597035 0 0.420389769152077
14 2.4 6.46653856599197 0 0 6.46653856599197 0 0.393281126231136
15 2.5 7.3049961209 0 0 7.3049961209 0 0.367920767132149
16 2.6 8.44278443150781 0 0 8.44278443150781 0 0.344195956955745
17 2.7 9.64701763241307 0 0 9.64701763241307 0 0.322001230804429
18 2.8 11.0230249268585 0 0 11.0230249268585 0 0.301237925055038
19 2.9 12.595310830963 0 0 12.595310830963 0 0.281813738852896
20 3 14.3918762683683 0 0 14.3918762683683 0 0.263642323879646
21 3.1 16.4447176717291 0 0 16.4447176717291 0 0.246642900572323
22 3.2 18.7903973978461 0 0 18.7903973978461 0 0.230739899088696
23 3.3 21.4706956672497 0 0 21.4706956672497 0 0.2158626234238
24 3.4 24.533355707577 0 0 24.533355707577 0 0.201944937185431
25 3.5 28.0329354618479 0 0 28.0329354618479 0 0.188924969632553
26 3.6 32.0317811492792 0 0 32.0317811492792 0 0.176744840670583
27 3.7 36.6011401740252 0 0 36.6011401740252 0 0.165350403581706
28 3.8 41.8224334082727 0 0 41.8224334082727 0 0.154691004347189
29 3.9 47.7887097791575 0 0 47.7887097791575 0 0.144719256492322
30 4 54.6063094204368 0 0 54.6063094204368 0 0.135390830453605
31

[Users] kesnar spacetime graphs.

[Nisa Amir]

Hello,

Hope all of you are doing well. I am trying to replicate some examples
given in par directory of the Cactus for practice. I have run the parameter
file kasner.par, have obtained the results but my graph is not correct
according to the paper arXiv-.3344. I am attaching the parameter file
which I have run, the resulting .asc file and the graph I have obtained.
Kindly, anyone guide me what mistake I am making.

Thanks
# Scalar ASCII output created by CarpetIOScalar
# created on nisa-HP-EliteBook-8460p by nisa on Apr 13 2020 at 18:35:59+
# parameter filename: "/home/nisa/simulations/kasner/output-/kasner.par"
#
# ADMBASE::alp (admbase-lapse)
# 1:iteration 2:time 3:data
# data columns: 3:alp
0 1 1
1 1.1 1.10516807923878
2 1.2 1.22139703387929
3 1.3 1.34985023661728
4 1.4 1.49181343392161
5 1.5 1.64870762110169
6 1.6 1.82210327269518
7 1.7 2.01373607103995
8 1.8 2.22552429100619
9 1.9 2.45958801558674
10 2 2.7182703708
11 2.1 3.00416102689445
12 2.2 3.32012210239558
13 2.3 3.66931689896311
14 2.4 4.05524159002711
15 2.5 4.48176028333758
16 2.6 4.95314377866773
17 2.7 5.47411241794573
18 2.8 6.0498834625196
19 2.9 6.68622347911214
20 3 7.38950626810626
21 3.1 8.16677692574262
22 3.2 9.02582269632481
23 3.3 9.97525134243182
24 3.4 11.0245778413745
25 3.5 12.1843203057714
26 3.6 13.4661061264204
27 3.7 14.8827894480316
28 3.8 16.4485812145626
29 3.9 18.1791931628222
30 4 20.091997302989
31 4.1 22.2062026054692
32 4.2 24.5430508183292
33 4.3 27.1260335722395
34 4.4 29.9811331950946
35 4.5 33.137089961772
36 4.6 36.6256988526434
37 4.7 40.4821392955224
38 4.8 44.7453418298394
39 4.9 49.4583961710301
40 5 54.6690057825689
41 5.1 60.4299948012098
42 5.2 66.799874030987
43 5.3 73.8434737518309
44 5.4 81.6326523153427
45 5.5 90.2470909680599
46 5.6 99.7751871082282
47 5.7 110.315060317158
48 5.8 121.975688101543
49 5.9 134.878191454332
50 6 149.157294237154
51 6.1 164.962985196742
52 6.2 182.462417397157
53 6.3 201.842087297009
54 6.4 223.310345040906
55 6.5 247.100299310694
56 6.6 273.473195010191
57 6.7 302.722361086065
58 6.8 335.177850183251
59 6.9 371.211923296507
60 7 411.245573413258
61 7.1 455.75633548831
62 7.2 505.287700273265
63 7.3 560.460542549221
64 7.4 621.987098607481
65 7.5 690.688195333051
66 7.6 767.514661092523
67 7.7 853.574161646637
68 7.8 950.165138991331
69 7.9 1058.82014172908
70 8 1181.36170443009
71 8.1 1319.97518658355
72 8.2 1477.30481611474
73 8.3 1656.58191132979
74 8.4 1861.79838685184
75 8.5 2097.94502655168
76 8.6 2371.34406110829
77 8.7 2690.1218151867
78 8.8 3064.89406785426
79 8.9 3509.78260100609
80 9 4043.96214789699
81 9.1 4694.08453657284
82 9.2 5498.20823928836
83 9.3 6512.42501583594
84 9.4 7822.56996301632
85 9.5 9566.11202413185
86 9.6 11976.000146384
87 9.7 15476.4571409464
88 9.8 20917.3165802197
89 9.9 30242.7172623103
90 10 48879.3076496065


kasner.par
Description: Binary data
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Re: [Users] IDBrillData

[Nisa Amir]

The visualization result generated by file gxx_x is attached below. What is
this indicating and what is along x-axis and y-axis. Kindly reply me as
soon as possible.

On Mon, Feb 5, 2018 at 7:32 PM, Roland Haas  wrote:

> Hello Nisa,
>
> > I didnt understand that what the output files are depicting.. please
> guide.
> I am not sure how to help you with this. As said before, the file
> ADMBase::gxx contains the x-x component of the three metric, ADMBase::gyy
> contains the y-y component of the three metric etc.
>
> Can you provide me with more details as to what it is you do not
> understand about the files or the data they contain? It would also be
> good to keep users@einsteintoolkit.org as a CC address so that persons
> other than I can help you.
>
> Yours,
> Roland
>
> >
> > On 26 Jan 2018 3:39 am, "Nisa Amir"  wrote:
> >
> > > Okay. I will read it..
> > >
> > > On 26 Jan 2018 1:16 am, "Roland Haas" 
> > > wrote:
> > >
> > >> Hello Amir,
> > >>
> > >> > when we run the parameter file in thorn IDBrillData as it is,
> without
> > >> any
> > >> > change we get a number of XG files which are viewed by using xgraph.
> > >> What
> > >> > these visualization results depicts? Early response will be highly
> > >> > appreciated
> > >> You mean
> > >> arrangements/EinsteinInitialData/IDBrillData/par/brilldata.par ?
> > >>
> > >> The output produced is
> > >>
> > >> IOASCII::out1D_vars = "ADMBase::gxx ADMBase::gyy ADMBase::gzz
> > >> ADMBase::gxy ADMBase::gxz ADMBase::gyz idbrilldata::brillpsi"
> > >>
> > >> so basically the xx, yy, zz, xy, xz, yz components of the 3-metric as
> > >> well as a quantity called brillpsi which I would assume to be a
> > >> conformal factor set up by the initial data routine.
> > >>
> > >> To understand what they mean you would need to look up what the
> > >> parameter q_function = "gundlach" implies by reading the documention
> in
> > >> tex/documentation.tex (just run it through pdflatex). Eg section 2 in
> > >> there should give information.
> > >>
> > >> Yours,
> > >> Roland
> > >>
> > >> --
> > >> My email is as private as my paper mail. I therefore support
> encrypting
> > >> and signing email messages. Get my PGP key from http://pgp.mit.edu .
> > >>
> > >
>
>
>
> --
> My email is as private as my paper mail. I therefore support encrypting
> and signing email messages. Get my PGP key from http://pgp.mit.edu .
>


gxx_x__13.pdf
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[Users] IDBrillData

[Nisa Amir]

HEY,

when we run the parameter file in thorn IDBrillData as it is, without any
change we get a number of XG files which are viewed by using xgraph. What
these visualization results depicts? Early response will be highly
appreciated
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Re: [Users] Physical significance

[Nisa Amir]

Thanks for the clarification.

On 22 Jan 2018 11:44 pm, "Roland Haas" 
wrote:

> Hello Nisa,
>
> > I want to ask that if we compute any space-time in EinsteinExact
> > arrangement in initial data form where we can can use this initial data
> > set? what is the physical significance of this thorn arrangement.
> > Your help will be highly appreciated.
> You can use the initial data provided by the thorns in EinsteinExact
> with any spacetime evolution thorn compatible with the Einstein Toolkit
> eg the McLachlan throrn that is part of the Einstein Toolkit.
>
> They can also be used as a background metric for eg a test-field
> evolution code (either a hydrodynamics simulation using GRHydro or
> IllinoisGRMHD) or a more exotic field for example using the proca field
> evolution thorn that has recently been proposed for inclusion in the
> Einstein Toolkit.
>
> What particular application would you have in mind?
>
> Yours,
> Roland
>
> --
> My email is as private as my paper mail. I therefore support encrypting
> and signing email messages. Get my PGP key from http://pgp.mit.edu .
>
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[Users] Physical significance

[Nisa Amir]

Hello everyone,

I want to ask that if we compute any space-time in EinsteinExact
arrangement in initial data form where we can can use this initial data
set? what is the physical significance of this thorn arrangement.
Your help will be highly appreciated.
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Re: [Users] About the thorn Einstein exact

[Nisa Amir]

I am just trying to add this spacetime, I dont want to use it in some other
thorns of the toolkit. and I am not familiar with xAct package.

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On Tue, Nov 7, 2017 at 8:31 PM, Ian Hinder  wrote:

>
> On 7 Nov 2017, at 14:04, Nisa Amir  wrote:
>
> Yes, the mathematica package is given but it accepts the metric only in
> cartesian coordinates. I want to add the spacetime non kerr which is in
> polar coordinates to the mathematica package in Einstein Exact thorn. What
> transformations should I made?
>
>
> Hi,
>
> You can apply the usual basis transformations in Mathematica to generate
> the metric in a quasi-Cartesian basis and coordinates.  This will then
> allow you to construct the spacetime numerically in these coordinates, and
> the thorns in the toolkit which expect quasi-Cartesian coordinates will
> just work, for example the horizon finder.  You would then evolve in 3+1
> dimensions.  I have done this for Kerr in Boyer-Lindquist coordinates using
> the xAct tensor manipulation package.  This is not straightforward, and
> it's not something that I would take on lightly if you don't have much
> experience with EinsteinExact or xAct.
>
> However, you have said that you want to store the gridfunctions in polar
> coordinates, and do the evolution in polar coordinates.  I have no
> experience with this, and many of the thorns in the toolkit which expect
> quasi-Cartesian coordinates will just not work (e.g. the horizon finder).
> That is why I asked you what you are trying to do.  Please can you answer
> that, before we go into a lot of detail about how to do it in one
> particular way, which may in the end not help you?
>
> Thanks!
>
> --
> Ian Hinder
> http://members.aei.mpg.de/ianhin
>
>
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Re: [Users] About the thorn Einstein exact

[Nisa Amir]

Yes, the mathematica package is given but it accepts the metric only in
cartesian coordinates. I want to add the spacetime non kerr which is in
polar coordinates to the mathematica package in Einstein Exact thorn. What
transformations should I made?

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On Mon, Nov 6, 2017 at 9:11 PM, Ian Hinder  wrote:

>
> On 5 Nov 2017, at 09:28, Nisa Amir  wrote:
>
> > Actually, when in the einsteinexact thorn there is a mathematica package
> named EinsteinExact. The documentation said that if you want to add some
> new space time add the space time in that mathematica package. I want to
> add non kerr which is in polar coordinates to that package, so that it
> generates a new thorn but I dont know how to do that.
> > Kindly guide me.
>
> Hi,
>
> Yes, you can add a new spacetime to the Metrics package (in
> Cactus/arrangements/EinsteinExact/m/Metrics/metrics). See the examples in
> there.  For example, Schwarzschild.m:
>
> (* ::Package:: *)
>
> {
>   "Name" -> "Schwarzschild",
>   "Description" -> "Schwarzschild spacetime",
>   "Dimensions" -> 4,
>   "Coordinates" -> {t, r, \[Theta], \[Phi]},
>   "Parameters" -> {M},
>   "Metric" -> {{-1 + 2 M / r, 0, 0, 0},
>{0, 1/(1 - 2 M / r), 0, 0},
>{0, 0, r^2, 0},
>{0, 0, 0, r^2 Sin[\[Theta]]^2}},
>   "SignDet" -> -1
> }
>
> The EinsteinExact package then uses this information to generate an exact
> solution thorn, which can be used for initial data in a numerical
> relativity evolution.   However, it only supports metrics which are
> explicitly given in Cartesian coordinates, so for example, the
> Schwarzschild example won't work with it (the Metrics package is generic,
> and is used also in other contexts, outside EinsteinExact).
>
> There is a check in arrangements/EinsteinExact/m/EinsteinExact.m that the
> metric is in Cartesian coordinates.  I suspect that the only reason for
> this check is that it wouldn't know what Cactus gridfunctions to use for
> anything else.
>
> Since you want to do the evolution in polar coordinates, I assume that you
> are going to have some mapping between x, y and z, and r, th and ph?  I
> must admit I have never tried to do something like this.
>
> There are people on this list who have done evolutions in polar
> coordinates; maybe one of them could give some advice about whether what
> you are trying to do is feasible?  Maybe you could give more details about
> what you are trying to do?
>
> PS: *please* include users@einsteintoolkit.org in the CC when you reply.
> If you reply just to me, then nobody else benefits from the discussion, and
> nobody else has the opportunity to help you.
>
> --
> Ian Hinder
> http://members.aei.mpg.de/ianhin
>
>
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[Users] About the thorn Einstein exact

[Nisa Amir]

Hello,

I am new to Einstein toolkit and m doing my resarch on it for M.phil
dissertion. Can you please guide me how to add a metric in polar
coordinates in Einstein exact thorn in Einstein toolkit and how to generate
a new thorn for this metric using kranc package.
your help will be highly appreciated.



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[Users] About the thorn Einstein exact

[Nisa Amir]

Hello,

I am new to Einstein toolkit and m doing my resarch on it for M.phil
dissertion. Can you please guide me how to add a metric in polar
coordinates in Einstein exact thorn in Einstein toolkit and how to generate
a new thorn for this metric using kranc package.
your help will be highly appreciated.


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