From 485ba419b3db38effc9e7d8d984d180dc4414732 Mon Sep 17 00:00:00 2001
From: Sergei Trofimov <sergei.trofimov@arm.com>
Date: Fri, 1 May 2015 10:04:02 +0100
Subject: [PATCH] energy_model: set matplotlib backent to AGG

Matplotlib defautls to the GTK backend. This can cause problems when
running in a headless session (e.g. over SSH). Since energy_model
istrument generates PNG plots, rather than rendering directly to UI, it
doesn't actually need GTK; set backend to AGG so that energy_model works
in headless environments.
---
 wlauto/instrumentation/energy_model/__init__.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/wlauto/instrumentation/energy_model/__init__.py b/wlauto/instrumentation/energy_model/__init__.py
index 43b5b8b8..6ce94740 100644
--- a/wlauto/instrumentation/energy_model/__init__.py
+++ b/wlauto/instrumentation/energy_model/__init__.py
@@ -11,6 +11,8 @@ from collections import Counter, namedtuple
 try:
     import jinja2
     import pandas as pd
+    import matplotlib
+    matplotlib.use('AGG')
     import matplotlib.pyplot as plt
     import numpy as np
     import_error = None