Fix parse_log.sh against "prefetch queue empty" messages

tools/extra/parse_log.sh

@@ -14,7 +14,12 @@ echo "Usage parse_log.sh /path/to/your.log"
 exit
 fi
 LOG=`basename $1`
-grep -B 1 'Test ' $1 > aux.txt
+sed -n '/Iteration .* Testing net/,/Iteration *. loss/p' $1 > aux.txt
+sed -i '/Waiting for data/d' aux.txt
+sed -i '/prefetch queue empty/d' aux.txt
+sed -i '/Iteration .* loss/d' aux.txt
+sed -i '/Iteration .* lr/d' aux.txt
+sed -i '/Train net/d' aux.txt
 grep 'Iteration ' aux.txt | sed  's/.*Iteration \([[:digit:]]*\).*/\1/g' > aux0.txt
 grep 'Test net output #0' aux.txt | awk '{print $11}' > aux1.txt
 grep 'Test net output #1' aux.txt | awk '{print $11}' > aux2.txt