RE: Snapshot files

From: Cassandra Hall <cxh_at_roe.ac.uk>
Date: Thu, 22 Dec 2016 10:49:41 +0000

Hi Jared

It isn't a problem with splash is it? Did you compile splash using big endian so that's what it's expecting, and your maching is writing a little endian file?

Other than that, I would copy gadgets io routine to see if you can read in the file yourself, without splash. If that still doesn't work, then maybe someone more experienced can help on this list!

Best wishes,

Cass
________________________________________
From: Workman, Jared [jworkman_at_coloradomesa.edu]
Sent: 22 December 2016 00:49
To: gadget-list_at_mpa-garching.mpg.de
Subject: [gadget-list] Snapshot files

Iím trying to run the standard galaxy test on 16 cores. When I get data the snapshot files are 1.7 mb and the restart files are 11 mb. When I try to use gsplash to visualize the results it tells me that no particle data has been found. What am I doing wrong?
Here is my parameter file
Relevant files

InitCondFile /home/jworkman/Gadget-2.0.7/Gadget2/galaxy/galaxy_littleendian.dat
OutputDir /home/jworkman/Gadget-2.0.7/Gadget2/galaxy/


EnergyFile energy.txt
InfoFile info.txt
TimingsFile timings.txt
CpuFile cpu.txt

RestartFile restart
SnapshotFileBase snapshot

OutputListFilename /home/jworkman/Gadget-2.0.7/Gadget2/galaxy/output_list.txt

% CPU time -limit

TimeLimitCPU 36000 % = 10 hours
ResubmitOn 0
ResubmitCommand my-scriptfile


% Code options


ICFormat 1
SnapFormat 1
ComovingIntegrationOn 0

TypeOfTimestepCriterion 0
OutputListOn 0
PeriodicBoundariesOn 0

% Caracteristics of run

TimeBegin 0.0 % Begin of the simulation
TimeMax 3.0 % End of the simulation

Omega0 0
OmegaLambda 0
OmegaBaryon 0
HubbleParam 1.0
 BoxSize 0

% Output frequency

TimeBetSnapshot 0.05
TimeOfFirstSnapshot 0

CpuTimeBetRestartFile 36000.0 ; here in seconds
TimeBetStatistics 0.05

NumFilesPerSnapshot 1
NumFilesWrittenInParallel 1



% Accuracy of time integration

ErrTolIntAccuracy 0.025

CourantFac 0.15

MaxSizeTimestep 0.01
MinSizeTimestep 0.0




% Tree algorithm, force accuracy, domain update frequency

ErrTolTheta 0.5
TypeOfOpeningCriterion 1
ErrTolForceAcc 0.005


TreeDomainUpdateFrequency 0.1


% Further parameters of SPH

DesNumNgb 50
MaxNumNgbDeviation 2
ArtBulkViscConst 0.8
InitGasTemp 0 % always ignored if set to 0
MinGasTemp 0


% Memory allocation

PartAllocFactor 1.5
TreeAllocFactor 0.8
BufferSize 25 % in MByte


% System of units

UnitLength_in_cm 3.085678e21 ; 1.0 kpc
UnitMass_in_g 1.989e43 ; 1.0e10 solar masses
UnitVelocity_in_cm_per_s 1e5 ; 1 km/sec
GravityConstantInternal 0


% Softening lengths

MinGasHsmlFractional 0.25

SofteningGas 0
SofteningHalo 1.0
SofteningDisk 0.4
SofteningBulge 0
SofteningStars 0
SofteningBndry 0

SofteningGasMaxPhys 0
SofteningHaloMaxPhys 1.0
SofteningDiskMaxPhys 0.4
SofteningBulgeMaxPhys 0
SofteningStarsMaxPhys 0
SofteningBndryMaxPhys 0




MaxRMSDisplacementFac 0.2

                                                                                                  1,1 Top

> Dr. Jared Workman
> Colorado Mesa University
> Associate Professor of Physics
> WS 230 C
> Phone:(970) 248-1327
> Email: jworkman_at_coloradomesa.edu




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Received on 2016-12-22 12:09:09

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