Added script to ftech the ICs of the PMillennium examples.

examples/PMillennium/PMillennium-1536/getIC.sh

+#!/bin/bash
+wget http://virgodb.cosma.dur.ac.uk/swift-webstorage/ICs/PMillennium/PMill-1536.hdf5

examples/PMillennium/PMillennium-1536/p-mill-1536.yml

@@ -45,7 +45,7 @@ Gravity:
   
 # Parameters related to the initial conditions
 InitialConditions:
-  file_name:                   ics.hdf5
+  file_name:                   PMill-1536.hdf5
   periodic:                    1
   cleanup_h_factors:           1    
   cleanup_velocity_factors:    1  

examples/PMillennium/PMillennium-384/getIC.sh

+#!/bin/bash
+wget http://virgodb.cosma.dur.ac.uk/swift-webstorage/ICs/PMillennium/PMill-384.hdf5

examples/PMillennium/PMillennium-384/p-mill-384.yml

@@ -41,11 +41,11 @@ Gravity:
   theta:                  0.5          
   comoving_softening:     0.08333  # 83.333 kpc = 1/25 mean inter-particle separation
   max_physical_softening: 0.08333  # 83.333 kpc = 1/25 mean inter-particle separation
-  mesh_side_length:       128
+  mesh_side_length:       64
   
 # Parameters related to the initial conditions
 InitialConditions:
-  file_name:                   ics.hdf5
+  file_name:                   PMill-384.hdf5
   periodic:                    1
   cleanup_h_factors:           1    
   cleanup_velocity_factors:    1  

examples/PMillennium/PMillennium-768/getIC.sh

+#!/bin/bash
+wget http://virgodb.cosma.dur.ac.uk/swift-webstorage/ICs/PMillennium/PMill-768.hdf5

examples/PMillennium/PMillennium-768/p-mill-768.yml

@@ -41,11 +41,11 @@ Gravity:
   theta:                  0.5          
   comoving_softening:     0.041666  # 41.6666 kpc = 1/25 mean inter-particle separation
   max_physical_softening: 0.041666  # 41.6666 kpc = 1/25 mean inter-particle separation
-  mesh_side_length:       256
+  mesh_side_length:       128
   
 # Parameters related to the initial conditions
 InitialConditions:
-  file_name:                   ics.hdf5
+  file_name:                   PMill-768.hdf5
   periodic:                    1
   cleanup_h_factors:           1    
   cleanup_velocity_factors:    1  

examples/PMillennium/README

+Initial conditions for the P-Millennium simulation (Baugh et al. 2018)
+at various resolution. These are all DMONLY runs in a 800^3 Mpc^3
+volume with the cosmology given by Planck-13:
+
+ Om = 0.307, Ol = 0.693, h = 0.6777, Ob = 0.0455
+
+The ICs exist at different resolution. The Millennium simulation
+(Springel 2005) has a resolution in between the 1536^3 and 3072^3
+examples given here.