From 1087dd1225ee07a80f2abb20ad325604fc8516aa Mon Sep 17 00:00:00 2001
From: Roelof Groenewald <40245517+roelof-groenewald@users.noreply.github.com>
Date: Thu, 20 Jan 2022 12:34:14 -0800
Subject: Fix unstable Python_particle_attr_access CI tests (#2766)

* explicitly set the numpy random seed in Python_particle_attr_access tests

* also shrink boundaries in which particles are injected for good measure

* also explicitly set the numpy random seed in Python_restart_runtime_components CI test
---
 Examples/Tests/ParticleDataPython/PICMI_inputs_2d.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'Examples/Tests/ParticleDataPython/PICMI_inputs_2d.py')

diff --git a/Examples/Tests/ParticleDataPython/PICMI_inputs_2d.py b/Examples/Tests/ParticleDataPython/PICMI_inputs_2d.py
index ff3c0704b..40d0b49ad 100755
--- a/Examples/Tests/ParticleDataPython/PICMI_inputs_2d.py
+++ b/Examples/Tests/ParticleDataPython/PICMI_inputs_2d.py
@@ -36,7 +36,6 @@ xmax = 0.03
 ymin = 0
 ymax = 0.03
 
-
 ##########################
 # numerics components
 ##########################
@@ -105,6 +104,9 @@ sim.initialize_warpx()
 # python particle data access
 ##########################
 
+# set numpy random seed so that the particle properties generated
+# below will be reproducible from run to run
+np.random.seed(30025025)
 
 sim.extension.add_real_comp('electrons', 'newPid')
 
@@ -113,9 +115,9 @@ my_id = sim.extension.getMyProc()
 def add_particles():
 
     nps = 10 * (my_id + 1)
-    x = np.random.rand(nps) * 0.03
+    x = np.linspace(0.005, 0.025, nps)
     y = np.zeros(nps)
-    z = np.random.random(nps) * 0.03
+    z = np.linspace(0.005, 0.025, nps)
     ux = np.random.normal(loc=0, scale=1e3, size=nps)
     uy = np.random.normal(loc=0, scale=1e3, size=nps)
     uz = np.random.normal(loc=0, scale=1e3, size=nps)
-- 
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