Hi, I am just starting to learn the SPH simulation code Gadget2, I followed this tutorial https://astrobites.org/2011/04/02/installing-and-running-gadget-2/ and succesfully ran the simulation and got some output files. However, I needed to comment out the -DHAVE HDF5 to avoid compilation error and now I have no good way to visualize my output. I srated with SPLASH but still trying to figure out how to deal with some error there. I figured out yt has analysis tool for Gadget outputs and I would very much love to try yt. I would very appreciate if anyone tells me how to get Gadget output in HDF5 formate. I am using ubuntu 16.04LTS. I need to know how to install HDF5 or necessary package in my machine to get the HDF5 output first. laso If you tell me a little how to change the Gadget Makefile for that, that would be very nice. I am quoting some excerpt from my Makefile. #--------------------------------------- Output OPT += -DHAVE_HDF5 #OPT += -DOUTPUTPOTENTIAL #OPT += -DOUTPUTACCELERATION #OPT += -DOUTPUTCHANGEOFENTROPY #OPT += -DOUTPUTTIMESTEP #---------------------------------------------------------------------- # Here, select compile environment for the target machine. This may need # adjustment, depending on your local system. Follow the examples to add # additional target platforms, and to get things properly compiled. #---------------------------------------------------------------------- #--------------------------------------- Select some defaults CC = mpicc # sets the C-compiler OPTIMIZE = -O2 -Wall -g # sets optimization and warning flags MPICHLIB = -lmpich #--------------------------------------- Select target computer SYSTYPE="trina" #SYSTYPE="Mako" #SYSTYPE="Regatta" #SYSTYPE="RZG_LinuxCluster" #SYSTYPE="RZG_LinuxCluster-gcc" #SYSTYPE="OpteronMPA" #SYSTYPE="OPA-Cluster32" #SYSTYPE="OPA-Cluster64" #--------------------------------------- Adjust settings for target computer ifeq ($(SYSTYPE),"trina") CC = mpicc OPTIMIZE = -O3 -Wall GSL_INCL = -I/usr/local/include GSL_LIBS = -L/usr/local/lib FFTW_INCL= -I/usr/local/include FFTW_LIBS= -L/usr/local/lib MPICHLIB = -L/usr/lib endif and sorry for spaming the yt list with Gadget2 stuff. thanks Turhan